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  • Top
  • Abstract
  • Introduction
  • Scope and considerations
  • Mechanisms of muscle and fat loss in cancer cachexia
  • Adverse interorgan effects of cancer therapy and cachexia
  • Convergence of treatment toxicity and cachexia
  • Mechanisms of treatment toxicity and cachexia
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  • Immunotherapy
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  • Reversibility of cachexia drivers
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Review Open Access | 10.1172/JCI191934

Cancer therapy and cachexia

Tuba Mansoor Thakir,1,2 Alice R. Wang,1,3,4 Amanda R. Decker-Farrell,1 Miriam Ferrer,1 Rohini N. Guin,1,3,4 Sam Kleeman,1 Llewelyn Levett,1 Xiang Zhao,1 and Tobias Janowitz1,5

1Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, USA.

2Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, USA.

3Medical Scientist Training Program, Stony Brook University School of Medicine, Stony Brook, New York, USA.

4Stony Brook University, Graduate Program in Genetics, Stony Brook, New York, USA.

5Northwell Health, New Hyde Park, New York, USA.

Address correspondence to: Tobias Janowitz, Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, New York 11724, USA. Phone: 1.516.367.8422; Email: janowitz@cshl.edu.

Authorship note: TMT and ARW are co–first authors and contributed equally.

Find articles by Thakir, T. in: PubMed | Google Scholar

1Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, USA.

2Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, USA.

3Medical Scientist Training Program, Stony Brook University School of Medicine, Stony Brook, New York, USA.

4Stony Brook University, Graduate Program in Genetics, Stony Brook, New York, USA.

5Northwell Health, New Hyde Park, New York, USA.

Address correspondence to: Tobias Janowitz, Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, New York 11724, USA. Phone: 1.516.367.8422; Email: janowitz@cshl.edu.

Authorship note: TMT and ARW are co–first authors and contributed equally.

Find articles by Wang, A. in: PubMed | Google Scholar

1Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, USA.

2Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, USA.

3Medical Scientist Training Program, Stony Brook University School of Medicine, Stony Brook, New York, USA.

4Stony Brook University, Graduate Program in Genetics, Stony Brook, New York, USA.

5Northwell Health, New Hyde Park, New York, USA.

Address correspondence to: Tobias Janowitz, Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, New York 11724, USA. Phone: 1.516.367.8422; Email: janowitz@cshl.edu.

Authorship note: TMT and ARW are co–first authors and contributed equally.

Find articles by Decker-Farrell, A. in: PubMed | Google Scholar

1Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, USA.

2Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, USA.

3Medical Scientist Training Program, Stony Brook University School of Medicine, Stony Brook, New York, USA.

4Stony Brook University, Graduate Program in Genetics, Stony Brook, New York, USA.

5Northwell Health, New Hyde Park, New York, USA.

Address correspondence to: Tobias Janowitz, Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, New York 11724, USA. Phone: 1.516.367.8422; Email: janowitz@cshl.edu.

Authorship note: TMT and ARW are co–first authors and contributed equally.

Find articles by Ferrer, M. in: PubMed | Google Scholar

1Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, USA.

2Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, USA.

3Medical Scientist Training Program, Stony Brook University School of Medicine, Stony Brook, New York, USA.

4Stony Brook University, Graduate Program in Genetics, Stony Brook, New York, USA.

5Northwell Health, New Hyde Park, New York, USA.

Address correspondence to: Tobias Janowitz, Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, New York 11724, USA. Phone: 1.516.367.8422; Email: janowitz@cshl.edu.

Authorship note: TMT and ARW are co–first authors and contributed equally.

Find articles by Guin, R. in: PubMed | Google Scholar

1Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, USA.

2Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, USA.

3Medical Scientist Training Program, Stony Brook University School of Medicine, Stony Brook, New York, USA.

4Stony Brook University, Graduate Program in Genetics, Stony Brook, New York, USA.

5Northwell Health, New Hyde Park, New York, USA.

Address correspondence to: Tobias Janowitz, Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, New York 11724, USA. Phone: 1.516.367.8422; Email: janowitz@cshl.edu.

Authorship note: TMT and ARW are co–first authors and contributed equally.

Find articles by Kleeman, S. in: PubMed | Google Scholar

1Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, USA.

2Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, USA.

3Medical Scientist Training Program, Stony Brook University School of Medicine, Stony Brook, New York, USA.

4Stony Brook University, Graduate Program in Genetics, Stony Brook, New York, USA.

5Northwell Health, New Hyde Park, New York, USA.

Address correspondence to: Tobias Janowitz, Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, New York 11724, USA. Phone: 1.516.367.8422; Email: janowitz@cshl.edu.

Authorship note: TMT and ARW are co–first authors and contributed equally.

Find articles by Levett, L. in: PubMed | Google Scholar

1Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, USA.

2Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, USA.

3Medical Scientist Training Program, Stony Brook University School of Medicine, Stony Brook, New York, USA.

4Stony Brook University, Graduate Program in Genetics, Stony Brook, New York, USA.

5Northwell Health, New Hyde Park, New York, USA.

Address correspondence to: Tobias Janowitz, Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, New York 11724, USA. Phone: 1.516.367.8422; Email: janowitz@cshl.edu.

Authorship note: TMT and ARW are co–first authors and contributed equally.

Find articles by Zhao, X. in: PubMed | Google Scholar

1Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, USA.

2Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, USA.

3Medical Scientist Training Program, Stony Brook University School of Medicine, Stony Brook, New York, USA.

4Stony Brook University, Graduate Program in Genetics, Stony Brook, New York, USA.

5Northwell Health, New Hyde Park, New York, USA.

Address correspondence to: Tobias Janowitz, Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, New York 11724, USA. Phone: 1.516.367.8422; Email: janowitz@cshl.edu.

Authorship note: TMT and ARW are co–first authors and contributed equally.

Find articles by Janowitz, T. in: PubMed | Google Scholar |

Authorship note: TMT and ARW are co–first authors and contributed equally.

Published August 1, 2025 - More info

Published in Volume 135, Issue 15 on August 1, 2025
J Clin Invest. 2025;135(15):e191934. https://doi.org/10.1172/JCI191934.
© 2025 Thakir et al. This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
Published August 1, 2025 - Version history
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Abstract

A central challenge in cancer therapy is the effective delivery of anticancer treatments while minimizing adverse effects on patient health. The potential dual impact of therapy is clearly illustrated in cancer-associated cachexia, a multifactorial syndrome characterized by involuntary weight loss, systemic inflammation, metabolic dysregulation, and behavioral alterations such as anorexia and apathy. While cachexia research often focuses on tumor-driven mechanisms, the literature indicates that cancer therapies themselves, particularly chemotherapies and targeted treatments, can initiate or exacerbate the biological pathways driving this syndrome. Here, we explore how therapeutic interventions intersect with the pathophysiology of cachexia, focusing on key organ systems including muscle, adipose tissue, liver, heart, and brain. We highlight examples such as therapy-induced upregulation of IL-6 and growth-differentiation factor 15, both contributing to reduced nutrient intake and a negative energy balance via brain-specific mechanisms. At the level of nutrient release and organ atrophy, chemotherapies also converge with cancer progression, for example, activating NF-κB in muscle and PKA/CREB signaling in adipose tissue. By examining how treatment timing and modality align with the natural trajectory of cancer cachexia, we underscore the importance of incorporating physiological endpoints alongside tumor-centric metrics in clinical trials. Such integrative approaches may better capture therapeutic efficacy while preserving patient well-being.

Introduction

A critical challenge in oncology is balancing the need to achieve tumor regression while minimizing the systemic adverse consequences of cancer therapies. This challenge is compounded by the dual impact of the malignancy and its treatment, which individually and together disrupt physiological homeostasis, drive multi-organ dysfunction, and weaken overall patient health. Several considerations, including potentially life-threatening side effects of therapies, such as neutropenic sepsis or liver failure, can limit treatment and clinical trial options for patients (1). One of the less frequently considered complications is cancer-associated cachexia, perhaps because it is an imprecisely defined and complex syndrome characterized by involuntary weight loss, apathy, anorexia, skeletal muscle wasting, and profound metabolic disturbances (2). Affecting up to 80% of patients with advanced cancer and contributing to 20% of cancer-related deaths (3, 4), cachexia remains underdiagnosed in clinical practice, underreported in trials, and insufficiently addressed in treatment protocols (5, 6).

Untreated cancers usually progress to become systemic diseases, particularly in the context of metastatic progression. Beyond the direct effects of tumor invasion and tissue replacement, cancer exerts widespread influence through the release of circulating factors that disrupt normal organ function, metabolism, neuroendocrine biology, and interorgan communication (7–12). Consequently, patients frequently present with or develop weight loss, apathy, and anorexia during disease progression (13–15), symptoms and clinical signs that are similar to those associated with treatment toxicities (16). These manifestations may initially be mild but often worsen to the degree that cancer-associated cachexia is diagnosed, which is clinically defined by involuntary weight loss, often coupled with anorexia, of more than 5% over the preceding 6 months of visit (17, 18).

Despite the progress made in developing diverse anticancer therapies, the systemic effects of treatments regularly extend beyond their antitumor effect, often resulting in patient-reported complications that significantly impair quality of life and mirror the effects exerted by progressive untreated cancers (19–22). Across the major therapeutic modalities, including surgery, radiotherapy, targeted therapy, chemotherapy, and immunotherapy, patients frequently experience reduced energy levels, diminished appetite, weight loss, apathy, and cognitive decline (23–25), mirroring cachexia symptoms. Consequently, careful assessment of patient-reported outcome measures, such as lack of appetite, should be coupled with blood tests used to monitor disruptions of organ function, and radiological and biomarker-based assessments should be used to monitor tumor burden in clinical practice (26).

This perspective delineates the systemic effects of cancer and its therapies, focusing on organ-specific disruptions and the interorgan communication pathways central to cancer progression and therapy-induced toxicity. We examine the temporal and dynamic interactions among cancer biology, therapeutic interventions, and disease progression. We show that the therapeutic window for balancing antitumor efficacy with systemic harm is defined by treatment timing and intensity. We highlight converging mechanisms underlying both treatment-related toxicity and cancer-associated cachexia, with a focus on their impact on key organs, including muscle, adipose tissue, liver, brain, and heart. By integrating these perspectives, we attempt to provide a framework for understanding the interplay among cancer, therapy, and whole-body physiology for clinicians treating patients with cancer cachexia. We conclude by highlighting opportunities within clinical trials and treatment strategies to develop interventions that mitigate systemic dysfunction while maximizing therapeutic effectiveness.

Scope and considerations

While this review integrates insights from both human studies and preclinical models, much of the mechanistic work discussed is derived from murine systems. Studying cachexia and treatment toxicity at a molecular level in humans is inherently challenging due to the limited access to tissues and the invasive nature of many mechanistic investigations. Preclinical models, particularly murine systems, provide a controlled environment to reproducibly examine the effects of cancer treatments and the pathways underlying cachexia (4). These models have been instrumental in uncovering fundamental mechanisms that inform our understanding of cancer cachexia and its systemic consequences, while also guiding the development of potential therapeutic approaches. In the sections below that refer to mechanistic work, this perspective is based on murine studies unless otherwise stated.

We selected a subset of mechanisms relevant to therapeutics taken from the 2023 World Health Organization (WHO) Model List of Essential Medicines (27) (summarized in Table 1, with a more detailed list of examples in Supplemental Table 1; supplemental material available online with this article; https://doi.org/10.1172/JCI191934DS1). We included cancer therapeutics whose adverse effects have defined mechanisms and acknowledge that other examples could have been chosen. We do not extend our work to discuss the relevance of noncancer comorbidities and their medications, aging-related progressive physiological changes (28), and sex-related physiological differences (29). However, we recognize that they are important determinants of whole-body condition and treatment tolerance. Last, in this Review, we focus on how therapies activate cancer cachexia–relevant pathways and therefore do not extend our considerations to another important aspect, namely how cancer cachexia pathways can drive tumor progression.

Table 1

Mechanisms of cancer adverse effects associated with select chemotherapies, targeted therapies, immunomodulators, and adjuvant therapies

Mechanisms of muscle and fat loss in cancer cachexia

Skeletal muscle and fat loss in cancer cachexia result from both shared and distinct molecular mechanisms that drive systemic energy imbalance (3). Proinflammatory cytokines, IL-6, TNF-α, and TGF-β, activate key transcription factors such as NF-κB and STAT3, promoting proteolysis in skeletal muscle via the ubiquitin/proteasome system (UPS) and enhancing lipolytic signaling in adipose tissue (30, 31). Parathyroid hormone-related protein (PTHrP) further amplifies catabolic signaling, driving UPS-mediated muscle degradation and stimulating thermogenic and lipid-catabolic activity in fat depots (32). Additionally, crosstalk between macrophages and cancer cells enhances NF-κB/STAT3 signaling, increasing tumor-derived TWEAK (TNF-like weak inducer of apoptosis), a potent inducer of muscle wasting through UPS activation (33)

Other tumor-derived factors contribute to systemic catabolism. Cancer-secreted exosomal proteins, such as HSP70 and HSP90, stimulate TLR4 and p38β MAPK pathways, exacerbating muscle breakdown (34). In adipose tissue, fat loss is driven by IL-6– and TNF-α–induced activation of lipases including hormone-sensitive lipase (HSL) and adipose triglyceride lipase (ATGL), which promote lipid mobilization and energy expenditure (35–37). Insulin resistance in the host further shifts metabolism toward catabolism, limiting nutrient storage and compounding energy deficits (38). Tumor-derived oncostatin M and zinc–α2-glycoprotein (ZAG) also promote lipid mobilization, reinforcing adipose tissue depletion (39, 40).

These interconnected pathways drive cancer cachexia, yet they also overlap with mechanisms by which cancer therapy induces systemic metabolic dysfunction. While the molecular mechanisms of cachexia have been extensively defined in numerous studies (3, 41), this Review does not aim to reiterate these well-characterized pathways. Instead, it examines the converging effects of cancer and its therapies on systemic physiology, with a focus on shared inflammatory and metabolic mechanisms that drive cachexia. We emphasize organ-specific disruptions and interorgan communication pathways, highlighting how tumor- and treatment-derived factors activate overlapping molecular cascades across muscle, adipose tissue, liver, brain, and heart. In parallel, we examine the temporal interplay between cancer biology, therapeutic interventions, and disease progression, showing how treatment timing and intensity shape the therapeutic window by balancing antitumor efficacy with systemic harm. By integrating these perspectives, we provide a framework for understanding how cancer and therapy cooperatively drive whole-body physiological decline, and where intervention opportunities to mitigate toxicity while preserving treatment effectiveness may lie.

Adverse interorgan effects of cancer therapy and cachexia

Understanding the physiological changes associated with cachexia and treatment toxicity requires consideration of both organ-specific impairments and interorgan interactions (Figure 1). This can be illustrated, for example, through examination of nutrient intake and processing. Here the brain plays a central role, as sensing of treatment toxicity and/or systemic inflammation suppresses appetite, drives fatigue, and induces apathy, thereby reducing caloric intake (10, 42, 43). The effects of treatment toxicity on the digestive system further compound these challenges, as chemotherapy-induced peripheral neuropathy and reduced motility exacerbate nausea, diarrhea, and impaired nutrient absorption (44, 45). Together these factors contribute to a state of malnutrition, while a loss of barrier function in various organs heightens susceptibility to systemic inflammation and infection (46). Function of the liver, a critical hub of metabolic regulation, is compromised by altered nutrient flux, redox imbalances, and diminished biosynthetic capacity, together worsening the negative energy balance, biosynthetic deficit, and metabolic stress characteristic of cachexia (47–51). This energy deficit drives fat wasting and muscle atrophy, which are not solely a consequence of nutrient deficits but may also stem from direct mechanistic drivers, in the context of both treatment toxicity and cancer progression (52–54). Adipose tissue wasting is often accompanied by inflammatory infiltration, contributing to a proinflammatory environment that perpetuates systemic dysfunction (55). In parallel, skeletal muscles experience severe atrophy, reduced regenerative capacity, and thus progressive weakness, resulting in diminished physical function leading to cachexia development (56, 57).

Conceptual framework: systemic interplay between cancer, therapy, and organFigure 1

Conceptual framework: systemic interplay between cancer, therapy, and organ dysfunction in cachexia. Tumor-secreted factors lead to changes in the cellular compartments which ultimately, cause biochemical changes that may create a positive feedback loop to drive factor secretion. Cancer therapies affect cachexia development by interacting with tumors, for example, by influencing tumor-secreted factors and altering cellular and biochemical components. More specifically, the figure illustrates the interconnected systemic interactions among cancer, its treatments (surgery, chemotherapy, radiotherapy, immunotherapy, and targeted therapies), and their effects on organ function, indicating the central role of interorgan communication in patient morbidity and the development of cancer cachexia. Each organ-specific list represents a set of examples of clinically observed symptoms (e.g., breathlessness in the lungs) and underlying biochemical or pathological changes (e.g., disrupted redox balance in the liver or cytokine-driven immune dysregulation).

One consequence of this persistent metabolic and inflammatory stress, compounded by use of immune-modulating medications, is a state of immune suppression (58) that is already a risk of many chemotherapeutics and some targeted therapies due to bone marrow suppression. Coupled with immune suppression is the frequent occurrence of anemia due to chronic illness and cancer treatments, impairing the body’s ability to fight infections and reducing oxygen transport (59, 60). Anemia can lead to breathlessness, which can also result from cardiac atrophy, reduced cardiac contractility and diaphragmatic weakness, which are processes that can compound each other (61, 62). These consequences, combined with reduced renal filtration of toxic therapies due to tubular damage (63, 64), can further lead to host deterioration.

This interconnected network of effects underscores the need for integrated therapeutic strategies that address and prevent the molecular causes and consequences of treatment toxicity and cachexia. Clinicians must consider the impact of both cancer and treatments on patients to preserve organ function and physical condition and improve quality of life.

Convergence of treatment toxicity and cachexia

Cancer cachexia and treatment toxicity arise through overlapping molecular mechanisms. We have identified three broad mechanisms of cachexia induction as a consequence of cancer progression (Figure 2): (i) Inflammatory processes can alter organ function to promote cachexia. Key cytokines such as IL-6, which can be tumor secreted, cause central and peripheral dysfunction, namely in the brain and liver, respectively. IL-6 disrupts dopaminergic motivation, resulting in apathy and fatigue (10, 43), while suppressing hepatic ketogenesis, exacerbating systemic energy imbalances (47). (ii) Hormonal signaling can alter metabolism and tissue homeostasis, resulting in negative energy balance. Growth differentiation factor 15 (GDF-15) is increased due to prolonged inflammation. It signals to the brain to activate circuits driving food aversion, thereby reducing nutrient intake and leading to a negative energy balance (65). (iii) Direct effects on end organs such as skeletal muscle and liver can lead to cachexia. For example, activin A can induce muscle degradation through upregulation of SMAD2/3 signaling (66). This pathway disrupts protein synthesis, promotes proteolysis, and ultimately leads to muscle atrophy and weakness.

Detrimental contribution of treatment toxicity to cachexia.Figure 2

Detrimental contribution of treatment toxicity to cachexia. The interplay between inflammatory pathways, hormone signaling, end-organ damage, and patient experience (frequently reported by patients or relatives) in the intersection of progression of cancer cachexia and therapy is illustrated. Example treatments or treatment categories as well as toxicity examples are provided within each domain, demonstrating how they may contribute to systemic dysfunction and cachexia development.

These three mechanisms of cancer cachexia, inflammatory pathways, hormonal signaling, and end-organ effects, contribute distinct and convergent pathways leading to this state and often account for mechanisms by which tumor treatments inadvertently amplify systemic dysfunction. For example, chemotherapy, targeted therapies, immunotherapy, radiotherapy, and surgery can exacerbate inflammatory cytokine production, hormonal dysregulation, or catabolic signaling in different organs, thereby magnifying the metabolic and functional impairments initially driven by the tumor itself.

Mechanisms of treatment toxicity and cachexia

Building on these foundational categories, specific molecular processes emerge that bridge the effects of cachexia and treatment toxicity. By examining circulating factors such as hormones and cytokines and then their downstream impacts on target organs, we can delineate the precise pathways through which anticancer therapies exacerbate systemic dysfunction (Figure 3). In the following sections, we examine these mechanisms according to treatment modality, chemotherapy, immunotherapy, radiotherapy, and targeted therapies, each discussed through the lens of (i) inflammatory activation, (ii) hormonal signaling, and (iii) end-organ damage.

Mechanistic pathways underlying tumor- and therapy-induced cachexia acrossFigure 3

Mechanistic pathways underlying tumor- and therapy-induced cachexia across key organs. Examples of converging molecular pathways through which tumors and cancer therapies drive cachexia-associated changes in five major organ systems: muscle, liver, fat, brain, and heart. Arrows indicate the connected mechanistic pathway resulting in physiological dysfunction in each organ, ultimately leading to a convergent effect. For example, in the brain, elevated GDF-15 or IL-6 levels, resulting from tumor progression or chemotherapy, are detected by neurons in the area postrema, resulting in the activation of circuitry that leads to food avoidance and behavior changes driven by hormone signaling (42, 43, 94, 96). In the heart, tumor- and therapy-driven activation of TGF-β signaling promotes cardiac fibrosis and heart failure (181–184). In the liver, tumor- and therapy-induced ROS accelerate fibrosis and impair liver function (47, 109, 139, 185, 186). In muscle, tumors and chemotherapy agents (e.g., doxorubicin, cisplatin) activate the NF-κB axis (inflammatory pathways), leading to atrophy via upregulation of MuRF1 and atrogin-1 (187–192). In adipose tissue, lipolytic enzymes (HSL, ATGL) and β3-adrenergic/PKA/CREB signaling promote lipid mobilization and thermogenesis, leading to energy wasting and fat loss (31–37, 39, 40). These molecular pathways collectively unmask or exacerbate cachexia and contribute to multi-organ dysfunction and failure during cancer progression and therapy. The figure illustrates only selected examples and does not represent a comprehensive set of molecular pathways or causalities. ANP, atrial natriuretic peptide; BNP, brain natriuretic peptide; MMP2, matrix metallopeptidase 2; COL1A1, collagen type I alpha 1; COL3A1, collagen type III alpha 1; CGI-58, comparative gene identification-58; FFA, free fatty acid; PKA, protein kinase A; CREB, cAMP response element-binding protein; C/EBPβ, CCAAT/enhancer binding protein beta; UCP1, uncoupling protein 1; PGC-1α, peroxisome proliferator-activated receptor gamma coactivator 1-alpha; PRDM16, PR domain containing 16; CPT1, carnitine palmitoyltransferase I; PDK4, pyruvate dehydrogenase kinase 4.

Chemotherapy

Inflammatory pathways. Doxorubicin, an anthracycline chemotherapeutic, disrupts DNA replication and triggers apoptosis, giving rise to ROS (67), which amplifies cytotoxicity, and activates NF-κB signaling and downstream production of TNF-α, IL-1β, and IL-6 (68, 69). This cytokine surge contributes to cachexia by promoting muscle protein degradation and inhibiting synthesis, manifesting as muscle wasting (70, 71). Additionally, doxorubicin-induced cardiotoxicity exacerbates cachexia by impairing cardiac function through mechanisms that involve the proteasomal degradation of TNF receptor–associated factor 2 (TRAF2), a component crucial for NF-κB signaling, ultimately promoting necrotic cell death in cardiac myocytes and worsening the systemic energy deficit (72).

5-Fluorouracil (5-FU), an antimetabolite chemotherapeutic agent, targets various cancers by inhibiting thymidylate synthase, an enzyme essential for DNA synthesis. Beyond its direct antitumor effects, 5-FU elevates proinflammatory cytokines such as TNF-α and IL-6, which are instrumental in promoting muscle wasting and cachexia (73). Preclinical studies have further elucidated 5-FU’s role in cachexia, showing changes in immune cell composition and a reduction in CD45+ immune cell infiltration into muscle tissues, highlighting a complex interaction between cancer pharmacotherapy and systemic muscular degeneration (74).

Gemcitabine, a nucleoside metabolic inhibitor used to treat various cancers, including pancreatic, breast, ovarian, and non–small cell lung cancer (NSCLC), functions by inhibiting ribonucleotide reductase. Gemcitabine has been observed to activate proinflammatory pathways, markedly increasing cytokines such as IL-6 and IL-8 through CD95/CD95L signaling (75). Additionally, gemcitabine is associated with serious cardiotoxic effects, such as heart tissue damage, further complicating the patient’s overall health and response to cancer treatment (76, 77).

Bleomycin is a cytotoxic chemotherapy agent known for its ability to bind to DNA and induce strand breaks through free radical generation. Bleomycin has been implicated in the promotion of cachexia through increased IL-6 and IL-33 production, which triggers lung fibrosis and muscle wasting (78).

Cyclophosphamide and ifosfamide, chemotherapeutic alkylating agents, interfere with DNA replication and RNA transcription by adding alkyl groups to DNA, leading to cell death. Cyclophosphamide induces a cytokine storm involving IL-1β, IL-7, IL-15, IL-2, IL-21, and IFN-γ, which while boosting antitumor responses also intensifies systemic inflammation that contributes to muscle wasting (79). Similarly, ifosfamide affects immune modulation by altering dendritic cell functions and increasing levels of cytokines, including IL-10, TNF-α, and IFN-γ, further impacting cachexia (80, 81). The metabolic byproducts of ifosfamide, notably 2-chloroacetaldehyde, are linked to neurotoxic effects and systemic inflammatory responses that increase cachexia risks (82, 83).

Cisplatin increases inflammation through NF-κB activation (84), IL-6 signaling, and ROS formation in neurons (85). Oxaliplatin increases the formation of neutrophil extracellular traps (NETs), which leads to mechanical hyperalgesia by inducing inflammasome release and increasing IL-18 levels (86). Paclitaxel increases IL-6, TNF-α, and CCL2 production in dorsal root ganglia neurons (87), and IL-6 neutralizing antibody pretreatment prevents peripheral neuropathy development (88), suggesting the role of increased inflammation in peripheral neuropathy development.

Methotrexate inhibits dihydrofolate reductase and influences nucleotide synthesis, which causes apoptosis in cells with high mitotic activity. Methotrexate induces appetite loss by decreasing ghrelin transportation and increasing serotonin secretion (89, 90), nausea by influencing substance P expression (91), and mucositis by interfering with mucosal cell growth (92). It also increases inflammatory markers and necrosis in the intestinal tract, which further worsens nutrient absorption (46, 93).

Hormonal signaling. Chemotherapy may cause fatigue, vomiting, and weight loss in patients by upregulating circulating factors such as cytokines and hormones. GDF-15, which binds to its receptor, glial cell–derived neurotrophic factor family receptor alpha-like (GFRAL), is upregulated in increased cellular stress and can lead to behavior changes such as food aversion, fatigue, and anxiety (42, 43, 94, 95). It induces fatigue in cisplatin-treated preclinical models. Cisplatin-treated mice exhibit elevated GDF-15 levels and decreased wheel-running activity, which were both prevented by administration of GFRAL-neutralizing antibodies (96). A similar effect has been demonstrated in nonhuman primates (65). There is ongoing work to evaluate the effect of GDF-15 neutralization in clinical trials (97). Moreover, cisplatin has been shown to decrease levels of plasma ghrelin, a hormone responsible for stimulating food intake and appetite, and may play a role in cancer treatment–induced dyspepsia (98, 99).

In addition to nutrient processing deficits and hormonal level changes, chemotherapy, such as 5-FU and carboplatin, and radiotherapy can increase inflammation and alter levels of the neurotransmitters serotonin, dopamine, and norepinephrine (100–102). These neurotransmitters are crucial to cognitive function, learning, memory performance, and mood regulation, which are highly relevant to daily physical function.

End-organ damage. As a DNA intercalating agent, doxorubicin affects both nuclear and mitochondrial DNA equally. Mitochondrial dysfunction triggers the removal of damaged organelles through autophagy, as evidenced by the upregulation of autophagy-related proteins, such as Beclin-1, autophagy-related protein 12 (ATG12), ATG7, and the microtubule-associated proteins 1A/1B light chain 3 (LC3) with an increased LC3-II to LC3-I ratio (103, 104). Imbalanced autophagy accelerates organelle degradation, protein degradation, and, ultimately, cell death in the affected muscle cells. In addition to autophagy pathways, doxorubicin triggers activation of the ubiquitin/proteasome pathway in both skeletal and cardiac muscle tissues. This activation is mediated by muscle-specific E3 ligases, such as atrogin-1 and MuRF-1, which are responsible for the polyubiquitination and subsequent degradation of muscle proteins (105). In skeletal muscle, doxorubicin induces overexpression of FoxO1 and FoxO3 transcription factors, which further amplify the transcription of genes associated with muscle atrophy and enhanced protein degradation (106). Cancer-upregulated E3 ligase UBR2 plays a critical role in cachexia by targeting the fast-twitch muscle fiber isoforms MHC II-b and II-x for proteasomal degradation, resulting in loss of contractile function in fast fibers, which contributes to cancer cachexia (107).

The alkylating agents melphalan, oxaliplatin, carboplatin, cisplatin, cyclophosphamide, and ifosfamide increase cytotoxicity through DNA crosslinking and oxidative stress, which cause cardiotoxicity, hepatotoxicity, nephrotoxicity, pulmonary toxicity, and pain hypersensitivity (108–117). In in vivo and in vitro models, decreased glutathione reductase and increased lipid peroxidation in multiple organs after alkylating agent treatment are possible explanations for organ toxicity (113, 115–118). Aside from increasing oxidative stress, cisplatin upregulates ubiquitin–proteasome–related genes such as MuRF-1 and Atrogin-1, leading to increased degradation of muscle proteins (119), which contributes to further muscle deterioration and cachexia development.

Cytotoxic agents such as bleomycin, capecitabine, docetaxel, and paclitaxel interfere with DNA synthesis or replication, eventually resulting in cell death. Docetaxel and paclitaxel increase the activity of oxidation enzymes, such as PKC and NADPH oxidase (120, 121). This upregulation coupled with decreased ROS scavenger enzyme, which neutralizes ROS, increases oxidative stress (120, 121). An increase in ROS induces liver, renal, and heart injury in in vivo models treated with cytotoxic agents (122–124).

Topoisomerase inhibitors etoposide and irinotecan inhibit DNA strand relaxing during DNA replication and transcription. The antimetabolites fluorouracil and methotrexate interfere with nucleic acid synthesis and vinca alkaloids vinblastine, and vinorelbine interferes with microtubule synthesis and disassembly, which are crucial in cell division. In in vivo and in vitro models, these agents result in increased oxidative stress in the heart, spleen, and intestine (125–132). Irinotecan can exacerbate autophagy-dependent apoptosis in cancer cells by increasing production of ROS and activating stress-related pathways such as JNK and P38 MAPK, which further promote autophagy in cancerous tissues (133).

As demonstrated through the mechanisms outlined above, chemotherapy contributes to cachexia not merely through collateral toxicity, but by activating molecular pathways that converge with those induced by cancer itself. Across diverse agents, recurring features, including NF-κB–driven cytokine surges, hormone-mediated appetite suppression, and end-organ damage via oxidative stress, highlight a shared pathophysiological landscape. This convergence between tumor- and treatment-induced dysfunction amplifies inflammation, disrupts metabolism, and accelerates physiological decline. Recognizing these overlaps clarifies how chemotherapy intensifies cachexia and reveals opportunities for targeted mitigation.

Immunotherapy

Inflammatory pathways. Immune checkpoint inhibitors such as nivolumab and ipilimumab, approved for treating various cancers, inadvertently promote cachexia through their immune-modulating actions. Nivolumab blocks programmed cell death protein 1 (PD-1) interactions on T cells with programmed death ligand 1 (PD-L1) on tumor cells, and ipilimumab inhibits cytotoxic T lymphocyte–associated protein 4 (CTLA-4) to enhance T cell activation. This heightened immune response, though beneficial against tumors, also leads to increased cytokine production (134, 135). CAR T cell therapy has been a transformative development in cancer treatment; it is specifically engineered to enhance the immune system’s ability to target and destroy cancer cells by recognizing specific antigens (136). Despite its effectiveness, the therapy’s mechanism of action produces a notable complication, cytokine release syndrome (137), which is marked by the increased release of inflammatory mediators such as IL-1, IL-6, and GM-CSF. This cytokine storm induces systemic inflammatory responses that can substantially impact the patient’s metabolism and body composition. In addition to increased inflammation, high inflammatory cytokine levels could lead to neurotoxicity in the central nervous system (138). This causes further decline in physical health in patients who are at risk of cachexia development.

Although immunotherapy-induced inflammation is well documented, mechanistic evidence for its direct effects on hormonal signaling or end-organ toxicity remains limited. However, immune-mediated toxicities converge with tumor-driven mechanisms, amplifying systemic dysfunction and accelerating cachexia in patients receiving immunotherapy.

Surgery and radiotherapy

Inflammatory pathways. Surgery is the first-line treatment for resectable solid tumors and is often combined with adjuvant therapies. Anesthetic agents used in surgery and the surgery procedure itself can lead to increased production of inflammatory cytokines and increased oxidative stress (139). Sevoflurane, an anesthetic agent, activates the NF-κB signaling pathway, which upregulates production of the inflammatory cytokine IL-6 (140). Patients with a history of immunotherapy may experience cytokine release syndrome during radiotherapy treatment, leading to raised IL-6 levels (141, 142).

End-organ damage. Radiotherapy causes DNA damage and cell-cycle arrest by delivering high-energy radiation to cells. However, similar DNA damage and mitochondrial dysfunction occur in adjacent normal tissue. Damaged tissues increase global TGF-β and collagen levels, which contributes to cardiac toxicity and fibrosis (143). Fibrosis formation in the heart can cause further decline in cardiac function and decreased physical ability (144, 145).

Although these modalities are often viewed as localized interventions, their systemic consequences, especially inflammation and fibrosis, may interact with tumor-induced stress to heighten vulnerability to cachexia.

Targeted therapy

Inflammatory pathways. Trastuzumab, a targeted therapy for HER2-positive cancers, is associated with cardiotoxicity through multiple mechanisms, including mitochondrial damage and increased oxidative stress within cardiac cells (146, 147). TGF-β– and IL-6–high environments promote cardiac fibrosis and structural remodeling (148), which further impairs cardiac function and contributes to heart failure. These adverse effects are exacerbated when trastuzumab is used in conjunction with cardiotoxic agents, such as doxorubicin, ultimately leading to worsening of cardiac outcomes and increased risk of heart failure (149).

By triggering cardiotoxicity and inflammatory remodeling, targeted therapies such as trastuzumab can reinforce pathophysiological processes already initiated by the tumor, thereby exacerbating cachexia-related decline.

Converging mechanisms across organs

Despite differences in therapeutic class, cancer treatments often activate the same inflammatory, hormonal, and metabolic pathways as the tumor itself, compounding systemic dysfunction. These shared mechanisms affect key organs, including muscle, adipose tissue, liver, brain, and heart, driving cachexia through oxidative stress, cytokine release, and disrupted energy homeostasis. The result is accelerated physiological decline and reduced treatment tolerance. Figure 3 illustrates these overlapping pathways and highlights potential targets for interventions aimed at preserving patient strength and function.

Reversibility of cachexia drivers

There are ongoing efforts to target key mediators of cachexia in hopes of preventing progression or reversing functional decline. For example, antibodies targeting IL-6 and GDF-15 have been tested in patients with NSCLC and pancreatic cancer. In a phase II trial (ClinicalTrials.gov NCT00866970), an anti–IL-6 antibody (ALD518) was shown to be well tolerated and improve hemoglobin levels, reduce fatigue, and stabilize weight, though without a clear survival benefit. Tocilizumab was combined with gemcitabine/nab-paclitaxel in a phase II study (NCT02767557) to treat patients with advanced pancreatic cancer and demonstrated lower muscle loss compared with gemcitabine/nab-paclitaxel therapy alone (150). More recently, a GDF-15–neutralizing antibody (ponsegromab) was evaluated in a phase II trial (NCT05546476), where it increased body weight and lean mass and improved appetite and physical function, with a favorable safety profile. However, treatment response may depend on cytokine levels prior to treatment initiation (97, 151) and on route of administration as demonstrated in vivo (43). Further understanding of the mechanism of disease will improve treatment outcomes and the possibility of reversing cachexia development.

Dynamic effects of cancer therapy and cachexia

The effects of treatments on the cancer-bearing host are time- and dose-dependent (Figure 4). Delayed cancer treatment is related to worse treatment outcomes, and late-stage cancer treatments sometimes only offer marginal benefits or cause harm (152). This is reflected in the use of the Eastern Cooperative Oncology Group Performance Status (ECOG PS) scale, in which determination of a high value in patients indicates that initiation of burdensome therapies should be avoided. When given early in the disease trajectory, the antitumor effects of the therapies are more likely to outweigh the unwanted side effects on the host. As discussed above, many cancer therapies, while effective as an antineoplastic agent, exhibit cumulative, dose-dependent toxicities that could exacerbate cachexia (153). For example, cisplatin, while effective in tumor suppression, induces a progressive increase in GDF-15 and a decline in ghrelin levels over time, leading to appetite loss, reduced physical activity, and worsening cachexia symptoms (65). This demonstrates how temporal changes in treatment burden can shift physiological responses from resilience to vulnerability.

Dynamic effects of cancer treatment on outcome and cachexia.Figure 4

Dynamic effects of cancer treatment on outcome and cachexia. Conceptualization of the interplay between cancer treatment efficacy and toxicity (therapeutic window), disease progression, and the risk of developing cachexia. (A) Concept: Cancer and treatment have reciprocal interactions via factors x1, x2…xn and y1, y2…yn, and both affect the host system over time. The composite interactions determine how much the global body function declines. 0 indicates a nonsymptomatic precancerous state when body function is well preserved, and 1 indicates the end point when body function declines to a survival threshold. (B) Specific example: Cisplatin treatment can reduce tumor burden and consequently tumor-associated GDF-15 levels, but it can also elevate GDF-15 levels through induction of cell stress in multiple tissues and can reduce its own excretion by reducing renal filtration rates. A net increase in GDF-15 level, therefore, can increase cachexia susceptibility potentially even in the context of reduced tumor burden. (C) A pseudotime representation of body function shows that as body function declines, the therapeutic benefits diminish, and the same intervention may ultimately become detrimental because of the host effect. Therefore, an early intervention when body function is still preserved may maximize net benefits and promote survival. As discussed in “Scope and considerations,”we did not include covariables in this discussion but acknowledge that they may have an impact on body function and the interaction between cancer and treatments.

These dynamics extend beyond cytotoxic agents. Glucocorticoids such as dexamethasone and prednisone are frequently prescribed to manage the symptoms associated with cancer and its treatment, such as reduced appetite, chemotherapy-induced nausea, prevention of edema after irradiation of spinal cord–compressing metastases, and cerebral edema (154, 155). These steroids activate glucocorticoid receptor signaling to directly suppress inflammatory immune responses, reduce edema, and temporarily enhance patient comfort and quality of life (156). However, their use is not without challenges, as glucocorticoids suppress systemic immunity, for example, manifesting as reduced efficacy of checkpoint immunotherapy (157), and phenocopy the organ atrophy observed in cachexia. Steroid-induced muscle atrophy is driven by activation of the ubiquitin/proteasome pathway, leading to increased muscle protein degradation via specific ligases such as MuRF1 and MAFbx (158). Simultaneously, glucocorticoids inhibit protein synthesis by altering mTOR signaling and induce insulin resistance (159), which impairs nutrient uptake and utilization by muscle cells, exacerbating muscle mass loss. Last, glucocorticoids are mainly metabolized by the cytochrome P450 (CYP) 3A4 enzyme (160, 161). The activity of CYP3A4 can be modulated by medications such as tyrosine kinase inhibitors, leading to changes in drug concentration and elimination time (162). Given these factors, the use of glucocorticoids in cancer treatment requires careful consideration to ensure that their benefits outweigh the risks, a complex question in the setting of cachexia. Optimizing dosage and treatment duration can help mitigate the catabolic effects of glucocorticoids and preserve muscle mass, though it may be challenging to demonstrate this unequivocally in clinical trials.

Considerations for clinical trials for patients with cancer

There are currently no approved therapies for the treatment of cachexia. Guidelines and recommendations for clinical management provide modest evidence supporting the use of short-term glucocorticoids and progesterone pharmacotherapy but remain largely inconclusive about dietary and nutritional recommendations. The lack of conclusive clinical trial evidence limits our ability to treat cachexia (163); however, the concepts and biology presented in this Review could help bridge this critical gap. Mechanistic insights into cachexia and its interplay with anticancer treatments underscore the importance of addressing systemic dysfunctions that impact both therapeutic efficacy and patient well-being (164). Herein, we highlight several factors that may inform the design and execution of clinical trials to optimize outcomes for all cancer patients, including those at risk of developing cachexia.

Patient selection and stratification. Effective clinical trials need to account for patient heterogeneity and comorbidities, particularly regarding the patients’ risk of developing cachexia. Biomarkers such as levels of inflammatory cytokines and hormones, radiological changes in organ volume, or muscle degradation markers can help identify patients at risk of cachexia or systemic dysfunction (26, 165). Stratifying patients based on these factors may ensure trials address both cancer progression and the broader impacts of treatment on host physiology.

Trial endpoints. Traditional endpoints such as overall survival and tumor response may be complemented by metrics that capture systemic health, including functional recovery, actimetry, and quality of life using established surveys such as the Functional Assessment of Chronic Illness Therapy (FACIT) measurement and mobile health data (166). These measures are critical for trials involving patients with or at risk of cachexia, as they provide a more complete evaluation of therapeutic efficacy and tolerability. Different trial endpoints that consider cancer stage rather than mortality could accelerate trial completion (167). In addition, early-phase clinical trials may benefit from clinical and mechanistic effect monitoring that is ideally tracked and analyzed longitudinally, perhaps using remote monitoring in combination with biological sample analysis. To identify ideal trial hypotheses and endpoints, an integration of preclinical models would provide valuable insights into the mechanisms linking cancer progression, treatment toxicity, and cachexia.

Adaptive trial design. Adaptive trial designs may be essential for addressing the evolving nature of cancer progression and systemic wasting. These frameworks allow prespecified changes based on interim patient responses, such as early signs of weight loss or metabolic decline (168, 169). This approach enables timely implementation of supportive strategies, including nutritional interventions, physical therapy, and pharmacologic agents. For example, a phase II clinical trial demonstrated the outcome of using technologies such as wearable devices to conduct remote clinical trials (106). Targeted therapies such as anamorelin, a ghrelin receptor agonist that stimulates appetite and lean mass gain, and ponsegromab, a monoclonal antibody that neutralizes GDF-15–mediated anorexia, may be most effective when guided by biomarker-based patient stratification (170, 171). Integrating these strategies into adaptive trial designs enhances clinical relevance and supports personalized care to preserve patients’ strength, function, and quality of life.

Improved diagnosis and coding. Accurate diagnosis and clinical disease coding of cachexia and its early markers in clinical settings may enhance patient identification and data collection for trials (5). This may even extend to patients at risk of developing cachexia, enabling more targeted, earlier interventions and robust analysis.

By incorporating these principles, clinical trials may better capture the interplay between tumor progression, treatment toxicity, and systemic health, ultimately improving outcomes for all patients with cancer.

Future directions for patient-based research

The complexity of cancer cachexia necessitates high-resolution approaches to dissect its molecular and cellular drivers. Technological advances such as single-cell RNA-Seq (scRNA-Seq), single-nucleus RNA-Seq (snRNA-Seq), and spatial transcriptomics are applicable to human tissue samples and have provided unprecedented insights into transcriptional changes across immune cells, muscle fibers, and adipose tissue, uncovering key tumor-derived cytokines (IL-6, TNF-α, TWEAK, and PTHrP) and their downstream catabolic pathways (55, 172, 173). Leveraging these insights, monoclonal antibodies and bispecific molecules targeting IL-6, GDF-15, and activin A are emerging as potential interventions to suppress catabolic signaling and preserve muscle mass (174, 175). PTHrP-neutralizing therapies may reduce energy expenditure, mitigating systemic wasting (32). To advance personalized cachexia management, biomarker-driven patient stratification should be prioritized in clinical trials (176). For example, GDF-15 has been linked to appetite suppression and muscle wasting in specific cachexia subtypes and is currently under investigation as a clinical biomarker (170, 177). However, its expression varies among patients, underscoring the need to identify additional biomarkers for more precise patient selection and therapeutic targeting. High-resolution molecular profiling will be essential for refining cachexia subtypes and should be combined with careful clinical phenotyping, including detailed analyses of patient-reported outcome measures, with the aim of predicting treatment responses and guiding personalized interventions (178). Additionally, artificial intelligence–driven (AI-driven) predictive modeling and adaptive clinical trial designs will further enhance patient-specific therapeutic strategies, optimizing both survival and quality of life (179, 180).

Conclusion

The advancement of cancer treatments requires a deep understanding of how the mode and timing of therapy, cancer biology, disease progression, physiology, and environment impact host condition and patient care. To date, research has primarily focused on antitumor effects to quantify treatment efficacy. This Review highlights the importance of also considering the host organism in cancer management, using as an example the risk of cachexia development. Combined assessments of patient-specific conditions and biological responses are essential for minimizing side effects and maximizing effectiveness. The emerging understanding of interorgan effects during systemic processes, such as cachexia, offers an avenue to improved clinical trial and care design. Emphasizing a more comprehensive approach, enabled by an ever-increasing tool set to capture biological and clinical response data, will lead to better patient outcomes, improving both survival rates and quality of life.

Supplemental material

View Supplemental table 1

Acknowledgments

We acknowledge funding from the Mark Foundation for Cancer Research (20-028-EDV), the Simons Foundation, Cancer Grand Challenges (NIH 1OT2CA278690-01; Cancer Research UK [CRUK] CGCATF-2021/100019), and NIH/National Cancer Institute (NCI) (R37CA286477-01A1).

Address correspondence to: Tobias Janowitz, Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, New York 11724, USA. Phone: 1.516.367.8422; Email: janowitz@cshl.edu.

Footnotes

Conflict of interest: TJ has received fees for consultancy work for Flagship Pioneering and LeapTx.

Copyright: © 2025, Thakir et al. This is an open access article published under the terms of the Creative Commons Attribution 4.0 International License.

Reference information: J Clin Invest. 2025;135(15):e191934. https://doi.org/10.1172/JCI191934.

References
  1. Gupta A, et al. Evaluating the time toxicity of cancer treatment in the CCTG CO.17 Trial. JCO Oncol Pract. 2023;19(6):859–866.
    View this article via: CrossRef PubMed Google Scholar
  2. Argiles JM, et al. Cancer-associated cachexia — understanding the tumour macroenvironment and microenvironment to improve management. Nat Rev Clin Oncol. 2023;20(4):250–264.
    View this article via: CrossRef PubMed Google Scholar
  3. Baracos VE, et al. Cancer-associated cachexia. Nat Rev Dis Primers. 2018;4:17105.
    View this article via: CrossRef PubMed Google Scholar
  4. Ferrer M, et al. Cachexia: a systemic consequence of progressive, unresolved disease. Cell. 2023;186(9):1824–1845.
    View this article via: CrossRef PubMed Google Scholar
  5. Goncalves MD, et al. Call to improve coding of cancer-associated cachexia. JCO Oncol Pract. 2025;21(7):926–931.
    View this article via: CrossRef PubMed Google Scholar
  6. Lainscak M, et al. Prevalence of cachexia and outcomes in patients with chronic diseases: a national database analysis of 5 484 103 hospitalisations. J Cachexia Sarcopenia Muscle. 2025;16(1):e13688.
    View this article via: CrossRef PubMed Google Scholar
  7. Strassmann G, et al. Evidence for the involvement of interleukin 6 in experimental cancer cachexia. J Clin Invest. 1992;89(5):1681–1684.
    View this article via: JCI CrossRef PubMed Google Scholar
  8. Oliff A, et al. Tumors secreting human TNF/cachectin induce cachexia in mice. Cell. 1987;50(4):555–563.
    View this article via: CrossRef PubMed Google Scholar
  9. Suriben R, et al. Antibody-mediated inhibition of GDF15-GFRAL activity reverses cancer cachexia in mice. Nat Med. 2020;26(8):1264–1270.
    View this article via: CrossRef PubMed Google Scholar
  10. Zhu XA, et al. A neuroimmune circuit mediates cancer cachexia-associated apathy. Science. 2025;388(6743):eadm8857.
    View this article via: CrossRef PubMed Google Scholar
  11. Altea-Manzano P, et al. Metabolic interplays between the tumour and the host shape the tumour macroenvironment. Nat Rev Cancer. 2025;25(4):274–292.
    View this article via: CrossRef PubMed Google Scholar
  12. Luengo A, et al. Targeting metabolism for cancer therapy. Cell Chem Biol. 2017;24(9):1161–1180.
    View this article via: CrossRef PubMed Google Scholar
  13. Sandhya L, et al. Randomized double-blind placebo-controlled study of olanzapine for chemotherapy-related anorexia in patients with locally advanced or metastatic gastric, hepatopancreaticobiliary, and lung cancer. J Clin Oncol. 2023;41(14):2617–2627.
    View this article via: CrossRef PubMed Google Scholar
  14. Gannavarapu BS, et al. Prevalence and survival impact of pretreatment cancer-associated weight loss: a tool for guiding early palliative care. J Oncol Pract. 2018;14(4):238–250.
    View this article via: CrossRef PubMed Google Scholar
  15. Williams GR, et al. Sarcopenia in the older adult with cancer. J Clin Oncol. 2021;39(19):2068–2078.
    View this article via: CrossRef PubMed Google Scholar
  16. National Cancer Institute. Common Terminology Criteria for Adverse Events (CTCAE). https://ctep.cancer.gov/protocoldevelopment/electronic_applications/ctc.htm Updated February 1, 2025. Accessed May 29, 2025.
  17. National Cancer Institute. Cancer Cachexia: After Years of No Advances, Progress Looks Possible. https://www.cancer.gov/about-cancer/treatment/research/cachexia Updated August 23, 2022. Updated May 29, 2025.
  18. Fearon K, et al. Definition and classification of cancer cachexia: an international consensus. Lancet Oncol. 2011;12(5):489–495.
    View this article via: CrossRef PubMed Google Scholar
  19. Siegel RL, et al. Cancer statistics, 2023. CA Cancer J Clin. 2023;73(1):17–48.
    View this article via: PubMed CrossRef Google Scholar
  20. Llamas-Ramos I, et al. Quality of life and side effects management in cancer treatment-A cross sectional study. Int J Environ Res Public Health. 2023;20(3):1708.
    View this article via: CrossRef PubMed Google Scholar
  21. Di Meglio A, et al. Dynamics of long-term patient-reported quality of life and health behaviors after adjuvant breast cancer chemotherapy. J Clin Oncol. 2022;40(27):3190–3204.
    View this article via: CrossRef PubMed Google Scholar
  22. Lustberg MB, et al. Mitigating long-term and delayed adverse events associated with cancer treatment: implications for survivorship. Nat Rev Clin Oncol. 2023;20(8):527–542.
    View this article via: CrossRef PubMed Google Scholar
  23. Henry DH, et al. Symptoms and treatment burden associated with cancer treatment: results from a cross-sectional national survey in the U.S. Support Care Cancer. 2008;16(7):791–801.
    View this article via: PubMed CrossRef Google Scholar
  24. Davis MP, et al. Appetite and cancer-associated anorexia: a review. J Clin Oncol. 2004;22(8):1510–1517.
    View this article via: CrossRef PubMed Google Scholar
  25. Lange M, et al. Cancer-related cognitive impairment: an update on state of the art, detection, and management strategies in cancer survivors. Ann Oncol. 2019;30(12):1925–1940.
    View this article via: CrossRef PubMed Google Scholar
  26. Cespedes Feliciano EM, et al. Body composition, adherence to anthracycline and taxane-based chemotherapy, and survival after nonmetastatic breast cancer. JAMA Oncol. 2020;6(2):264–270.
    View this article via: CrossRef PubMed Google Scholar
  27. World Health Organization. WHO Model List of Essential Medicines – 23rd list, 2023. World Health Organization; 2023. Accessed May 29, 2025. https://www.who.int/publications/i/item/WHO-MHP-HPS-EML-2023.02.
  28. Gomes AP, et al. Age-induced accumulation of methylmalonic acid promotes tumour progression. Nature. 2020;585(7824):283–287.
    View this article via: CrossRef PubMed Google Scholar
  29. Cabrera AR, et al. Females display relatively preserved muscle quality compared with males during the onset and early stages of C26-induced cancer cachexia. J Appl Physiol (1985). 2023;135(3):655–672.
    View this article via: CrossRef PubMed Google Scholar
  30. Fearon KC, et al. Cancer cachexia: mediators, signaling, and metabolic pathways. Cell Metab. 2012;16(2):153–166.
    View this article via: CrossRef PubMed Google Scholar
  31. Ryden M, Arner P. Fat loss in cachexia--is there a role for adipocyte lipolysis? Clin Nutr. 2007;26(1):1–6.
    View this article via: CrossRef PubMed Google Scholar
  32. Kir S, et al. PTH/PTHrP receptor mediates cachexia in models of kidney failure and cancer. Cell Metab. 2016;23(2):315–323.
    View this article via: CrossRef PubMed Google Scholar
  33. Liu M, et al. The crosstalk between macrophages and cancer cells potentiates pancreatic cancer cachexia. Cancer Cell. 2024;42(5):885–903.
    View this article via: CrossRef PubMed Google Scholar
  34. Zhang G, et al. Tumor induces muscle wasting in mice through releasing extracellular Hsp70 and Hsp90. Nat Commun. 2017;8(1):589.
    View this article via: CrossRef PubMed Google Scholar
  35. Petruzzelli M, et al. A switch from white to brown fat increases energy expenditure in cancer-associated cachexia. Cell Metab. 2014;20(3):433–447.
    View this article via: CrossRef PubMed Google Scholar
  36. Han J, et al. Interleukin-6 induces fat loss in cancer cachexia by promoting white adipose tissue lipolysis and browning. Lipids Health Dis. 2018;17(1):14.
    View this article via: CrossRef PubMed Google Scholar
  37. Das SK, et al. Adipose triglyceride lipase contributes to cancer-associated cachexia. Science. 2011;333(6039):233–238.
    View this article via: CrossRef PubMed Google Scholar
  38. Asp ML, et al. Evidence for the contribution of insulin resistance to the development of cachexia in tumor-bearing mice. Int J Cancer. 2010;126(3):756–763.
    View this article via: CrossRef PubMed Google Scholar
  39. Domaniku-Waraich A, et al. Oncostatin M signaling drives cancer-associated skeletal muscle wasting. Cell Rep Med. 2024;5(4):101498.
    View this article via: CrossRef PubMed Google Scholar
  40. Bing C, et al. Zinc-alpha2-glycoprotein, a lipid mobilizing factor, is expressed in adipocytes and is up-regulated in mice with cancer cachexia. Proc Natl Acad Sci U S A. 2004;101(8):2500–2505.
    View this article via: CrossRef PubMed Google Scholar
  41. Argiles JM, et al. Cancer cachexia: understanding the molecular basis. Nat Rev Cancer. 2014;14(11):754–762.
    View this article via: CrossRef PubMed Google Scholar
  42. Mullican SE, et al. GFRAL is the receptor for GDF15 and the ligand promotes weight loss in mice and nonhuman primates. Nat Med. 2017;23(10):1150–1157.
    View this article via: CrossRef PubMed Google Scholar
  43. Sun Q, et al. Area postrema neurons mediate interleukin-6 function in cancer cachexia. Nat Commun. 2024;15(1):4682.
    View this article via: CrossRef PubMed Google Scholar
  44. Kneis S, et al. It’s never too late - balance and endurance training improves functional performance, quality of life, and alleviates neuropathic symptoms in cancer survivors suffering from chemotherapy-induced peripheral neuropathy: results of a randomized controlled trial. BMC Cancer. 2019;19(1):414.
    View this article via: CrossRef PubMed Google Scholar
  45. Cetinkaya-Fisgin A, et al. Cisplatin induced neurotoxicity is mediated by Sarm1 and calpain activation. Sci Rep. 2020;10(1):21889.
    View this article via: CrossRef PubMed Google Scholar
  46. Carneiro-Filho BA, et al. Intestinal barrier function and secretion in methotrexate-induced rat intestinal mucositis. Dig Dis Sci. 2004;49(1):65–72.
    View this article via: CrossRef PubMed Google Scholar
  47. Flint TR, et al. Tumor-induced IL-6 reprograms host metabolism to suppress anti-tumor immunity. Cell Metab. 2016;24(5):672–684.
    View this article via: CrossRef PubMed Google Scholar
  48. Martins NM, et al. Cisplatin induces mitochondrial oxidative stress with resultant energetic metabolism impairment, membrane rigidification and apoptosis in rat liver. J Appl Toxicol. 2008;28(3):337–344.
    View this article via: CrossRef PubMed Google Scholar
  49. Petruzzelli M, et al. Early neutrophilia marked by aerobic glycolysis sustains host metabolism and delays cancer cachexia. Cancers (Basel). 2022;14(4):963.
    View this article via: CrossRef PubMed Google Scholar
  50. Ferrer M, et al. Ketogenic diet promotes tumor ferroptosis but induces relative corticosterone deficiency that accelerates cachexia. Cell Metab. 2023;35(7):1147–1162.
    View this article via: CrossRef PubMed Google Scholar
  51. Liu Y, et al. Hepatic gluconeogenesis and PDK3 upregulation drive cancer cachexia in flies and mice. Nat Metab. 2025;7(4):823–841.
    View this article via: CrossRef PubMed Google Scholar
  52. Babic A, et al. Adipose tissue and skeletal muscle wasting precede clinical diagnosis of pancreatic cancer. Nat Commun. 2023;14(1):4317.
    View this article via: CrossRef PubMed Google Scholar
  53. Ducharme JB, et al. Cancer-induced FOXP1 disrupts and reprograms skeletal-muscle circadian transcription in cachexia. Cell Rep. 2025;44(5):115689.
    View this article via: CrossRef PubMed Google Scholar
  54. Pin F, et al. Cachexia induced by cancer and chemotherapy yield distinct perturbations to energy metabolism. J Cachexia Sarcopenia Muscle. 2019;10(1):140–154.
    View this article via: CrossRef PubMed Google Scholar
  55. Han J, et al. Single-cell sequencing unveils key contributions of immune cell populations in cancer-associated adipose wasting. Cell Discov. 2022;8(1):122.
    View this article via: CrossRef PubMed Google Scholar
  56. Sartori R, et al. Perturbed BMP signaling and denervation promote muscle wasting in cancer cachexia. Sci Transl Med. 2021;13(605):eaay9592.
    View this article via: CrossRef PubMed Google Scholar
  57. Wang G, et al. Metastatic cancers promote cachexia through ZIP14 upregulation in skeletal muscle. Nat Med. 2018;24(6):770–781.
    View this article via: CrossRef PubMed Google Scholar
  58. Auphan N, et al. Immunosuppression by glucocorticoids: inhibition of NF-kappa B activity through induction of I kappa B synthesis. Science. 1995;270(5234):286–290.
    View this article via: CrossRef PubMed Google Scholar
  59. Ning K, et al. Prevalence and contributing factors of anemia in patients with gynecological cancer: a retrospective cohort study. Sci Rep. 2024;14(1):10628.
    View this article via: CrossRef PubMed Google Scholar
  60. Skverchinskaya E, et al. Anticancer drugs paclitaxel, carboplatin, doxorubicin, and cyclophosphamide alter the biophysical characteristics of red blood cells, in vitro. Biology (Basel). 2023;12(2):230.
    View this article via: PubMed CrossRef Google Scholar
  61. Cosper PF, Leinwand LA. Cancer causes cardiac atrophy and autophagy in a sexually dimorphic manner. Cancer Res. 2011;71(5):1710–1720.
    View this article via: CrossRef PubMed Google Scholar
  62. Roberts BM, et al. Diaphragm and ventilatory dysfunction during cancer cachexia. FASEB J. 2013;27(7):2600–2610.
    View this article via: CrossRef PubMed Google Scholar
  63. Okamura M, et al. Kidney function in cachexia and sarcopenia: facts and numbers. J Cachexia Sarcopenia Muscle. 2023;14(4):1589–1595.
    View this article via: CrossRef PubMed Google Scholar
  64. Ramesh G, Reeves WB. TNF-alpha mediates chemokine and cytokine expression and renal injury in cisplatin nephrotoxicity. J Clin Invest. 2002;110(6):835–842.
    View this article via: JCI CrossRef PubMed Google Scholar
  65. Breen DM, et al. GDF-15 neutralization alleviates platinum-based chemotherapy-induced emesis, anorexia, and weight loss in mice and nonhuman primates. Cell Metab. 2020;32(6):938–950.
    View this article via: CrossRef PubMed Google Scholar
  66. Morvan F, et al. Blockade of activin type II receptors with a dual anti-ActRIIA/IIB antibody is critical to promote maximal skeletal muscle hypertrophy. Proc Natl Acad Sci U S A. 2017;114(47):12448–12453.
    View this article via: CrossRef PubMed Google Scholar
  67. Bodley A, et al. DNA topoisomerase II-mediated interaction of doxorubicin and daunorubicin congeners with DNA. Cancer Res. 1989;49(21):5969–5978.
    View this article via: PubMed Google Scholar
  68. Wang L, et al. Doxorubicin-induced systemic inflammation is driven by upregulation of toll-like receptor TLR4 and endotoxin leakage. Cancer Res. 2016;76(22):6631–6642.
    View this article via: CrossRef PubMed Google Scholar
  69. Bian X, et al. NF-kappa B activation mediates doxorubicin-induced cell death in N-type neuroblastoma cells. J Biol Chem. 2001;276(52):48921–48929.
    View this article via: CrossRef PubMed Google Scholar
  70. Goodman MN. Interleukin-6 induces skeletal muscle protein breakdown in rats. Proc Soc Exp Biol Med. 1994;205(2):182–185.
    View this article via: CrossRef PubMed Google Scholar
  71. Lang CH, et al. TNF-alpha impairs heart and skeletal muscle protein synthesis by altering translation initiation. Am J Physiol Endocrinol Metab. 2002;282(2):E336–E347.
    View this article via: CrossRef PubMed Google Scholar
  72. Dhingra R, et al. Proteasomal degradation of TRAF2 mediates mitochondrial dysfunction in doxorubicin-cardiomyopathy. Circulation. 2022;146(12):934–954.
    View this article via: CrossRef PubMed Google Scholar
  73. Abdellateif MS, et al. The prognostic significance of 5-fluorouracil induced inflammation and immuno-modulation in colorectal cancer patients. J Inflamm Res. 2020;13:1245–1259.
    View this article via: CrossRef PubMed Google Scholar
  74. VanderVeen BN, et al. The acute effects of 5 fluorouracil on skeletal muscle resident and infiltrating immune cells in mice. Front Physiol. 2020;11:593468.
    View this article via: CrossRef PubMed Google Scholar
  75. Rashid K, et al. CD95L inhibition impacts gemcitabine-mediated effects and non-apoptotic signaling of TNF-α and TRAIL in pancreatic tumor cells. Cancers (Basel). 2021;13(21):5458.
    View this article via: CrossRef PubMed Google Scholar
  76. Mohebali D, et al. Gemcitabine induced cardiomyopathy: a case of multiple hit cardiotoxicity. ESC Heart Fail. 2017;4(1):71–74.
    View this article via: CrossRef PubMed Google Scholar
  77. Alam S, et al. Gemcitabine-induced cardiotoxicity in patients receiving adjuvant chemotherapy for pancreatic cancer: a case series. Case Rep Oncol. 2018;11(1):221–227.
    View this article via: CrossRef PubMed Google Scholar
  78. Shieh JM, et al. Elevation of IL-6 and IL-33 levels in serum associated with lung fibrosis and skeletal muscle wasting in a bleomycin-induced lung injury mouse model. Mediators Inflamm. 2019;2019:7947596.
    View this article via: CrossRef PubMed Google Scholar
  79. Bracci L, et al. Cyclophosphamide enhances the antitumor efficacy of adoptively transferred immune cells through the induction of cytokine expression, B-cell and T-cell homeostatic proliferation, and specific tumor infiltration. Clin Cancer Res. 2007;13(2 pt 1):644–653.
    View this article via: CrossRef PubMed Google Scholar
  80. Kuppner MC, et al. Differential effects of ifosfamide on dendritic cell-mediated stimulation of T cell interleukin-2 production, natural killer cell cytotoxicity and interferon-gamma production. Clin Exp Immunol. 2008;153(3):429–438.
    View this article via: CrossRef PubMed Google Scholar
  81. Huang G, et al. Efficacy of ifosfamide combined with liposome doxorubicin on osteosarcoma and its effects on serum IL-10, TNF-α, and IFN-γ in patients with osteosarcoma. Am J Transl Res. 2022;14(2):1288–1296.
    View this article via: PubMed Google Scholar
  82. Li F, et al. Comparative metabolism of cyclophosphamide and ifosfamide in the mouse using UPLC-ESI-QTOFMS-based metabolomics. Biochem Pharmacol. 2010;80(7):1063–1074.
    View this article via: CrossRef PubMed Google Scholar
  83. Sood C, O’Brien PJ. 2-Chloroacetaldehyde-induced cerebral glutathione depletion and neurotoxicity. Br J Cancer Suppl. 1996;27:S287–S293.
    View this article via: PubMed Google Scholar
  84. Zhang Y, et al. Chemotherapeutic drugs induce oxidative stress associated with DNA repair and metabolism modulation. Life Sci. 2022;289:120242.
    View this article via: CrossRef PubMed Google Scholar
  85. Leo M, et al. Cisplatin-induced activation and functional modulation of satellite glial cells lead to cytokine-mediated modulation of sensory neuron excitability. Exp Neurol. 2021;341:113695.
    View this article via: CrossRef PubMed Google Scholar
  86. Agnes JP, et al. Antioxidants improve oxaliplatin-induced peripheral neuropathy in tumor-bearing mice model: role of spinal cord oxidative stress and inflammation. J Pain. 2021;22(8):996–1013.
    View this article via: CrossRef PubMed Google Scholar
  87. Kalynovska N, et al. Losartan attenuates neuroinflammation and neuropathic pain in paclitaxel-induced peripheral neuropathy. J Cell Mol Med. 2020;24(14):7949–7958.
    View this article via: CrossRef PubMed Google Scholar
  88. Huehnchen P, et al. Blockade of IL-6 signaling prevents paclitaxel-induced neuropathy in C57Bl/6 mice. Cell Death Dis. 2020;11(1):45.
    View this article via: CrossRef PubMed Google Scholar
  89. Francois M, et al. Increased ghrelin but low ghrelin-reactive immunoglobulins in a rat model of methotrexate chemotherapy-induced anorexia. Front Nutr. 2016;3:23.
    View this article via: CrossRef PubMed Google Scholar
  90. Takano Y, et al. Nitric oxide plays a critical role in methotrexate-induced hyperplasia of enterochromaffin cells containing 5-hydroxytryptamine in rat small intestine. J Pharmacol Sci. 2019;141(1):32–40.
    View this article via: CrossRef PubMed Google Scholar
  91. Machida T, et al. Methotrexate causes acute hyperplasia of enterochromaffin cells containing substance P in the intestinal mucosa of rats. J Pharmacol Sci. 2017;133(3):190–193.
    View this article via: CrossRef PubMed Google Scholar
  92. Fijlstra M, et al. Reduced absorption of long-chain fatty acids during methotrexate-induced gastrointestinal mucositis in the rat. Clin Nutr. 2013;32(3):452–459.
    View this article via: CrossRef PubMed Google Scholar
  93. Boukhettala N, et al. Methotrexate induces intestinal mucositis and alters gut protein metabolism independently of reduced food intake. Am J Physiol Endocrinol Metab. 2009;296(1):E182–E190.
    View this article via: CrossRef PubMed Google Scholar
  94. Hsu JY, et al. Non-homeostatic body weight regulation through a brainstem-restricted receptor for GDF15. Nature. 2017;550(7675):255–259.
    View this article via: CrossRef PubMed Google Scholar
  95. Townsend LK, et al. GDF15 links adipose tissue lipolysis with anxiety. Nat Metab. 2025;7(5):1004–1017.
    View this article via: CrossRef PubMed Google Scholar
  96. Chelette B, et al. The GDF15-GFRAL axis mediates chemotherapy-induced fatigue in mice. Brain Behav Immun. 2023;108:45–54.
    View this article via: CrossRef PubMed Google Scholar
  97. Groarke JD, et al. Ponsegromab for the treatment of cancer cachexia. N Engl J Med. 2024;391(24):2291–2303.
    View this article via: CrossRef PubMed Google Scholar
  98. Malik NM, et al. Adaptive upregulation of gastric and hypothalamic ghrelin receptors and increased plasma ghrelin in a model of cancer chemotherapy-induced dyspepsia. Regul Pept. 2008;148(1-3):33–38.
    View this article via: CrossRef PubMed Google Scholar
  99. Hiura Y, et al. Fall in plasma ghrelin concentrations after cisplatin-based chemotherapy in esophageal cancer patients. Int J Clin Oncol. 2012;17(4):316–323.
    View this article via: CrossRef PubMed Google Scholar
  100. Jarmolowicz DP, et al. 5-Fluorouracil impairs attention and dopamine release in rats. Behav Brain Res. 2019;362:319–322.
    View this article via: CrossRef PubMed Google Scholar
  101. Kaplan SV, et al. Impaired brain dopamine and serotonin release and uptake in wistar rats following treatment with carboplatin. ACS Chem Neurosci. 2016;7(6):689–699.
    View this article via: CrossRef PubMed Google Scholar
  102. Dey D, et al. Neurological impairments in mice subjected to irradiation and chemotherapy. Radiat Res. 2020;193(5):407–424.
    View this article via: CrossRef PubMed Google Scholar
  103. Loh JS, et al. Simultaneous proteasome and autophagy inhibition synergistically enhances cytotoxicity of doxorubicin in breast cancer cells. Cell Biochem Funct. 2022;40(4):403–416.
    View this article via: CrossRef PubMed Google Scholar
  104. Smuder AJ, et al. Exercise protects against doxorubicin-induced markers of autophagy signaling in skeletal muscle. J Appl Physiol (1985). 2011;111(4):1190–1198.
    View this article via: CrossRef PubMed Google Scholar
  105. Montalvo RN, et al. Doxorubicin-induced oxidative stress differentially regulates proteolytic signaling in cardiac and skeletal muscle. Am J Physiol Regul Integr Comp Physiol. 2020;318(2):R227–R233.
    View this article via: CrossRef PubMed Google Scholar
  106. Brennan CM, et al. Oral famotidine versus placebo in non-hospitalised patients with COVID-19: a randomised, double-blind, data-intense, phase 2 clinical trial. Gut. 2022;71(5):879–888.
    View this article via: CrossRef PubMed Google Scholar
  107. Gao S, et al. UBR2 targets myosin heavy chain IIb and IIx for degradation: molecular mechanism essential for cancer-induced muscle wasting. Proc Natl Acad Sci U S A. 2022;119(43):e2200215119.
    View this article via: CrossRef PubMed Google Scholar
  108. Liu R, et al. Melphalan induces cardiotoxicity through oxidative stress in cardiomyocytes derived from human induced pluripotent stem cells. Stem Cell Res Ther. 2020;11(1):470.
    View this article via: CrossRef PubMed Google Scholar
  109. Lu Y, et al. Oxaliplatin aggravates hepatic oxidative stress, inflammation and fibrosis in a non-alcoholic fatty liver disease mouse model. Int J Mol Med. 2019;43(6):2398–2408.
    View this article via: PubMed CrossRef Google Scholar
  110. Agraharkar M, et al. Carboplatin-related hematuria and acute renal failure. Am J Kidney Dis. 1998;32(5):E5.
    View this article via: CrossRef PubMed Google Scholar
  111. Sleijfer DT, et al. Acute and cumulative effects of carboplatin on renal function. Br J Cancer. 1989;60(1):116–120.
    View this article via: CrossRef PubMed Google Scholar
  112. McSweeney KR, et al. Mechanisms of cisplatin-induced acute kidney injury: pathological mechanisms, pharmacological interventions, and genetic mitigations. Cancers (Basel). 2021;13(7):1572.
    View this article via: CrossRef PubMed Google Scholar
  113. Han YK, et al. Cisplatin induces lung cell cilia disruption and lung damage via oxidative stress. Free Radic Biol Med. 2021;177:270–277.
    View this article via: CrossRef PubMed Google Scholar
  114. Khasabova IA, et al. Pioglitazone, a PPARγ agonist, reduces cisplatin-evoked neuropathic pain by protecting against oxidative stress. Pain. 2019;160(3):688–701.
    View this article via: CrossRef PubMed Google Scholar
  115. Ahmed RA, et al. Capsaicin ameliorates the cyclophosphamide-induced cardiotoxicity by inhibiting free radicals generation, inflammatory cytokines, and apoptotic pathway in rats. Life (Basel). 2023;13(3):786.
    View this article via: PubMed CrossRef Google Scholar
  116. Celik H, et al. Morin attenuates ifosfamide-induced neurotoxicity in rats via suppression of oxidative stress, neuroinflammation and neuronal apoptosis. Neurotoxicology. 2020;76:126–137.
    View this article via: CrossRef PubMed Google Scholar
  117. Shabani M, et al. Pretreatment of ellagic acid protects ifosfamide-induced acute nephrotoxicity in rat kidneys: a mitochondrial, histopathological and oxidative stress approaches. Toxicol Rep. 2023;10:441–447.
    View this article via: CrossRef PubMed Google Scholar
  118. Santos NA, et al. Cisplatin-induced nephrotoxicity is associated with oxidative stress, redox state unbalance, impairment of energetic metabolism and apoptosis in rat kidney mitochondria. Arch Toxicol. 2007;81(7):495–504.
    View this article via: CrossRef PubMed Google Scholar
  119. Sakai H, et al. Mechanisms of cisplatin-induced muscle atrophy. Toxicol Appl Pharmacol. 2014;278(2):190–199.
    View this article via: CrossRef PubMed Google Scholar
  120. Hung CH, et al. Docetaxel facilitates endothelial dysfunction through oxidative stress via modulation of protein kinase C beta: the protective effects of sotrastaurin. Toxicol Sci. 2015;145(1):59–67.
    View this article via: CrossRef PubMed Google Scholar
  121. Alexandre J, et al. Novel action of paclitaxel against cancer cells: bystander effect mediated by reactive oxygen species. Cancer Res. 2007;67(8):3512–3517.
    View this article via: CrossRef PubMed Google Scholar
  122. Tavakoli Pirzaman A, et al. The effect of melatonin on capecitabine-induced hepatic and renal toxicity in rats. Hum Exp Toxicol. 2024;43:9603271231223506.
    View this article via: CrossRef PubMed Google Scholar
  123. Ibrahim HA, et al. Baicalein prevents capecitabine-induced heart damage in female Wistar rats and enhances its anticancer potential in MCF-7 breast cancer cells. Life Sci. 2023;319:121523.
    View this article via: CrossRef PubMed Google Scholar
  124. Teixeira KC, et al. Attenuation of bleomycin-induced lung injury and oxidative stress by N-acetylcysteine plus deferoxamine. Pulm Pharmacol Ther. 2008;21(2):309–316.
    View this article via: CrossRef PubMed Google Scholar
  125. Jiang H, et al. Drug-induced oxidative stress in cancer treatments: angel or devil? Redox Biol. 2023;63:102754.
    View this article via: CrossRef PubMed Google Scholar
  126. Du K, et al. Angelica Sinensis polysaccharide antagonizes 5-Fluorouracil-induced spleen injury and dysfunction by suppressing oxidative stress and apoptosis. Biomed Pharmacother. 2023;162:114602.
    View this article via: CrossRef PubMed Google Scholar
  127. Fata F, et al. 5-fluorouracil-induced small bowel toxicity in patients with colorectal carcinoma. Cancer. 1999;86(7):1129–1134.
    View this article via: CrossRef PubMed Google Scholar
  128. Shin HJ, et al. Etoposide induced cytotoxicity mediated by ROS and ERK in human kidney proximal tubule cells. Sci Rep. 2016;6:34064.
    View this article via: CrossRef PubMed Google Scholar
  129. Rtibi K, et al. Irinotecan chemotherapy-induced intestinal oxidative stress: underlying causes of disturbed mucosal water and electrolyte transport. Pathophysiology. 2017;24(4):275–279.
    View this article via: CrossRef PubMed Google Scholar
  130. Schmidt S, et al. Methotrexate-induced liver injury is associated with oxidative stress, impaired mitochondrial respiration, and endoplasmic reticulum stress in vitro. Int J Mol Sci. 2022;23(23):15116.
    View this article via: CrossRef PubMed Google Scholar
  131. Yamada T, et al. Role of oxidative stress in vinorelbine-induced vascular endothelial cell injury. Free Radic Biol Med. 2010;48(1):120–127.
    View this article via: CrossRef PubMed Google Scholar
  132. Rtibi K, et al. Vinblastine, an anticancer drug, causes constipation and oxidative stress as well as others disruptions in intestinal tract in rat. Toxicol Rep. 2017;4:221–225.
    View this article via: CrossRef PubMed Google Scholar
  133. Zhu Q, et al. Irinotecan induces autophagy-dependent apoptosis and positively regulates ROS-related JNK- and P38-MAPK pathways in gastric cancer cells. Onco Targets Ther. 2020;13:2807–2817.
    View this article via: CrossRef PubMed Google Scholar
  134. Shiraishi Y, et al. High incidence of cytokine release syndrome in patients with advanced NSCLC treated with nivolumab plus ipilimumab. Ann Oncol. 2023;34(11):1064–1065.
    View this article via: CrossRef PubMed Google Scholar
  135. Tsutsui T, et al. Cytokine release syndrome complicated with severe rashes induced by nivolumab plus ipilimumab therapy in a patient with non-small cell lung cancer: a case report. Thorac Cancer. 2023;14(23):2310–2313.
    View this article via: CrossRef PubMed Google Scholar
  136. Neelapu SS, et al. Axicabtagene ciloleucel CAR T-cell therapy in refractory large B-cell lymphoma. N Engl J Med. 2017;377(26):2531–2544.
    View this article via: CrossRef PubMed Google Scholar
  137. Lee DW, et al. T cells expressing CD19 chimeric antigen receptors for acute lymphoblastic leukaemia in children and young adults: a phase 1 dose-escalation trial. Lancet. 2015;385(9967):517–528.
    View this article via: CrossRef PubMed Google Scholar
  138. Gust J, et al. Endothelial activation and blood-brain barrier disruption in neurotoxicity after adoptive immunotherapy with CD19 CAR-T cells. Cancer Discov. 2017;7(12):1404–1419.
    View this article via: CrossRef PubMed Google Scholar
  139. Schwarz C, et al. Inflammatory response and oxidative stress during liver resection. PLoS One. 2017;12(10):e0185685.
    View this article via: CrossRef PubMed Google Scholar
  140. Tian Y, et al. Minocycline attenuates sevoflurane-induced cell injury via activation of Nrf2. Int J Mol Med. 2017;39(4):869–878.
    View this article via: CrossRef PubMed Google Scholar
  141. Barker CA, et al. Cytokine release syndrome after radiation therapy: case report and review of the literature. J Immunother Cancer. 2018;6(1):1.
    View this article via: CrossRef PubMed Google Scholar
  142. Chang JS, Kim JH. Cytokine release syndrome in a patient with metastatic triple-negative breast cancer treated with hypofractionated radiation therapy, who had previously undergone immunotherapy: a case report. Adv Radiat Oncol. 2024;9(7):101513.
    View this article via: CrossRef PubMed Google Scholar
  143. Kruse JJ, et al. Changes in transforming growth factor-beta (TGF-beta 1), procollagen types I and II mRNA in the rat heart after irradiation. Int J Radiat Biol. 1999;75(11):1429–1436.
    View this article via: CrossRef PubMed Google Scholar
  144. Erven K, et al. Acute radiation effects on cardiac function detected by strain rate imaging in breast cancer patients. Int J Radiat Oncol Biol Phys. 2011;79(5):1444–1451.
    View this article via: CrossRef PubMed Google Scholar
  145. Skytta T, et al. Troponin T-release associates with cardiac radiation doses during adjuvant left-sided breast cancer radiotherapy. Radiat Oncol. 2015;10:141.
    View this article via: CrossRef PubMed Google Scholar
  146. Ye T, et al. Trastuzumab-induced cardiomyopathy via ferroptosis-mediated mitochondrial dysfunction. Free Radic Biol Med. 2023;206:143–161.
    View this article via: CrossRef PubMed Google Scholar
  147. ElZarrad MK, et al. Trastuzumab alters the expression of genes essential for cardiac function and induces ultrastructural changes of cardiomyocytes in mice. PLoS One. 2013;8(11):e79543.
    View this article via: CrossRef PubMed Google Scholar
  148. Kabel AM, Elkhoely AA. Targeting proinflammatory cytokines, oxidative stress, TGF-β1 and STAT-3 by rosuvastatin and ubiquinone to ameliorate trastuzumab cardiotoxicity. Biomed Pharmacother. 2017;93:17–26.
    View this article via: CrossRef PubMed Google Scholar
  149. Wei S, et al. Trastuzumab potentiates doxorubicin-induced cardiotoxicity via activating the NLRP3 inflammasome in vivo and in vitro. Biochem Pharmacol. 2023;214:115662.
    View this article via: CrossRef PubMed Google Scholar
  150. Chen IM, et al. Randomized phase II study of Nab-paclitaxel and gemcitabine with or without tocilizumab as first-line treatment in advanced pancreatic cancer: survival and cachexia. J Clin Oncol. 2025;43(18):2107–2118.
    View this article via: CrossRef PubMed Google Scholar
  151. Bayliss TJ, et al. A humanized anti-IL-6 antibody (ALD518) in non-small cell lung cancer. Expert Opin Biol Ther. 2011;11(12):1663–1668.
    View this article via: CrossRef PubMed Google Scholar
  152. Hanna TP, et al. Mortality due to cancer treatment delay: systematic review and meta-analysis. BMJ. 2020;371:m4087.
    View this article via: CrossRef PubMed Google Scholar
  153. Cella PS, et al. Doxorubicin causes cachexia, sarcopenia, and frailty characteristics in mice. PLoS One. 2024;19(4):e0301379.
    View this article via: CrossRef PubMed Google Scholar
  154. Goedhals L, et al. Control of delayed nausea and vomiting with granisetron plus dexamethasone or dexamethasone alone in patients receiving highly emetogenic chemotherapy: a double-blind, placebo-controlled, comparative study. Ann Oncol. 1998;9(6):661–666.
    View this article via: CrossRef PubMed Google Scholar
  155. Vecht CJ, et al. Dose-effect relationship of dexamethasone on Karnofsky performance in metastatic brain tumors: a randomized study of doses of 4, 8, and 16 mg per day. Neurology. 1994;44(4):675–680.
    View this article via: CrossRef PubMed Google Scholar
  156. Radhakrishnan V, et al. Dexamethasone-free antiemetic prophylaxis for highly emetogenic chemotherapy: a double-blind, Phase III Randomized Controlled Trial (CINV POD study). JCO Glob Oncol. 2024;10:e2300301.
    View this article via: CrossRef PubMed Google Scholar
  157. Arbour KC, et al. Impact of baseline steroids on efficacy of programmed cell death-1 and programmed death-ligand 1 blockade in patients with non-small-cell lung cancer. J Clin Oncol. 2018;36(28):2872–2878.
    View this article via: CrossRef PubMed Google Scholar
  158. Sato AY, et al. Glucocorticoids induce bone and muscle atrophy by tissue-specific mechanisms upstream of E3 ubiquitin ligases. Endocrinology. 2017;158(3):664–677.
    View this article via: PubMed CrossRef Google Scholar
  159. Wang H, et al. Dexamethasone represses signaling through the mammalian target of rapamycin in muscle cells by enhancing expression of REDD1. J Biol Chem. 2006;281(51):39128–39134.
    View this article via: CrossRef PubMed Google Scholar
  160. Moore CD, et al. Metabolic pathways of inhaled glucocorticoids by the CYP3A enzymes. Drug Metab Dispos. 2013;41(2):379–389.
    View this article via: CrossRef PubMed Google Scholar
  161. Skauby RH, et al. In vitro assessments predict that CYP3A4 contributes to a greater extent than CYP3A5 to prednisolone clearance. Basic Clin Pharmacol Toxicol. 2021;129(6):427–436.
    View this article via: CrossRef PubMed Google Scholar
  162. Hardy KD, et al. Studies on the role of metabolic activation in tyrosine kinase inhibitor-dependent hepatotoxicity: induction of CYP3A4 enhances the cytotoxicity of lapatinib in HepaRG cells. Drug Metab Dispos. 2014;42(1):162–171.
    View this article via: CrossRef PubMed Google Scholar
  163. Roeland EJ, et al. Management of cancer cachexia: ASCO Guideline. J Clin Oncol. 2020;38(21):2438–2453.
    View this article via: CrossRef PubMed Google Scholar
  164. Maki RG, et al. Combining response and toxicity data to implement project optimus. J Clin Oncol. 2024;42(35):4123–4125.
    View this article via: CrossRef PubMed Google Scholar
  165. Li J, et al. Tumor cell-intrinsic factors underlie heterogeneity of immune cell infiltration and response to immunotherapy. Immunity. 2018;49(1):178–193.
    View this article via: CrossRef PubMed Google Scholar
  166. Leventhal EL, et al. Trajectories of mhealth-tracked mental health and their predictors in female chronic pelvic pain disorders. J Pain Res. 2025;18:899–913.
    View this article via: CrossRef PubMed Google Scholar
  167. Feng X, et al. Cancer stage compared with mortality as end points in randomized clinical trials of cancer screening: a systematic review and meta-analysis. JAMA. 2024;331(22):1910–1917.
    View this article via: CrossRef PubMed Google Scholar
  168. Faubert B, et al. Lactate metabolism in human lung tumors. Cell. 2017;171(2):358–371.
    View this article via: CrossRef PubMed Google Scholar
  169. Connell CM, et al. Early relapse on adjuvant gemcitabine associated with an exceptional response to 2nd line capecitabine chemotherapy in a patient with pancreatic adenosquamous carcinoma with strong intra-tumoural expression of cytidine deaminase: a case report. BMC Cancer. 2020;20(1):38.
    View this article via: CrossRef PubMed Google Scholar
  170. Crawford J, et al. A Phase Ib first-in-patient study assessing the safety, tolerability, pharmacokinetics, and pharmacodynamics of ponsegromab in participants with cancer and cachexia. Clin Cancer Res. 2024;30(3):489–497.
    View this article via: CrossRef PubMed Google Scholar
  171. Naito T, et al. A multicenter, open-label, single-arm study of anamorelin (ONO-7643) in patients with cancer cachexia and low body mass index. Cancer. 2022;128(10):2025–2035.
    View this article via: CrossRef PubMed Google Scholar
  172. Zhang L, et al. Integrated single-cell RNA sequencing analysis reveals distinct cellular and transcriptional modules associated with survival in lung cancer. Signal Transduct Target Ther. 2022;7(1):9.
    View this article via: CrossRef PubMed Google Scholar
  173. Yin W, et al. Integrated singlecell and bulk RNA-seq analysis identifies a prognostic signature related to inflammation in colorectal cancer. Sci Rep. 2025;15(1):874.
    View this article via: CrossRef PubMed Google Scholar
  174. Trikha M, et al. Targeted anti-interleukin-6 monoclonal antibody therapy for cancer: a review of the rationale and clinical evidence. Clin Cancer Res. 2003;9(13):4653–4665.
    View this article via: PubMed Google Scholar
  175. de Martin Coletti L, et al. ACVR2B polymorphism, Adiponectin, and GDF-15 levels as biomarkers for cachexia in gastrointestinal cancer. Sci Rep. 2024;14(1):27714.
    View this article via: CrossRef PubMed Google Scholar
  176. Yule MS, et al. Biomarker endpoints in cancer cachexia clinical trials: Systematic Review 5 of the cachexia endpoint series. J Cachexia Sarcopenia Muscle. 2024;15(3):853–867.
    View this article via: CrossRef PubMed Google Scholar
  177. Groarke JD, et al. Phase 2 study of the efficacy and safety of ponsegromab in patients with cancer cachexia: PROACC-1 study design. J Cachexia Sarcopenia Muscle. 2024;15(3):1054–1061.
    View this article via: CrossRef PubMed Google Scholar
  178. Qiu S, et al. Small molecule metabolites: discovery of biomarkers and therapeutic targets. Signal Transduct Target Ther. 2023;8(1):132.
    View this article via: CrossRef PubMed Google Scholar
  179. Pallmann P, et al. Adaptive designs in clinical trials: why use them, and how to run and report them. BMC Med. 2018;16(1):29.
    View this article via: CrossRef PubMed Google Scholar
  180. Chung H, et al. Artificial-intelligence-driven discovery of prognostic biomarker for sarcopenia. J Cachexia Sarcopenia Muscle. 2021;12(6):2220–2230.
    View this article via: CrossRef PubMed Google Scholar
  181. Wei Y, et al. Fibroblast-specific inhibition of TGF-β1 signaling attenuates lung and tumor fibrosis. J Clin Invest. 2017;127(10):3675–3688.
    View this article via: JCI CrossRef PubMed Google Scholar
  182. Narikawa M, et al. Doxorubicin induces trans-differentiation and MMP1 expression in cardiac fibroblasts via cell death-independent pathways. PLoS One. 2019;14(9):e0221940.
    View this article via: CrossRef PubMed Google Scholar
  183. Blyszczuk P, et al. Transforming growth factor-β-dependent Wnt secretion controls myofibroblast formation and myocardial fibrosis progression in experimental autoimmune myocarditis. Eur Heart J. 2017;38(18):1413–1425.
    View this article via: PubMed CrossRef Google Scholar
  184. Ko T, et al. Cardiac fibroblasts regulate the development of heart failure via Htra3-TGF-β-IGFBP7 axis. Nat Commun. 2022;13(1):3275.
    View this article via: CrossRef PubMed Google Scholar
  185. Kopetz S, et al. Synergistic activity of the SRC family kinase inhibitor dasatinib and oxaliplatin in colon carcinoma cells is mediated by oxidative stress. Cancer Res. 2009;69(9):3842–3849.
    View this article via: CrossRef PubMed Google Scholar
  186. Rjiba-Touati K, et al. Recombinant human erythropoietin prevents etoposide- and methotrexate-induced toxicity in kidney and liver tissues via the regulation of oxidative damage and genotoxicity in Wistar rats. Hum Exp Toxicol. 2018;37(8):848–858.
    View this article via: CrossRef PubMed Google Scholar
  187. Zhang G, et al. Toll-like receptor 4 mediates Lewis lung carcinoma-induced muscle wasting via coordinate activation of protein degradation pathways. Sci Rep. 2017;7(1):2273.
    View this article via: CrossRef PubMed Google Scholar
  188. Min K, et al. Increased mitochondrial emission of reactive oxygen species and calpain activation are required for doxorubicin-induced cardiac and skeletal muscle myopathy. J Physiol. 2015;593(8):2017–2036.
    View this article via: CrossRef PubMed Google Scholar
  189. Li Y, et al. Dynamic observation of 5-fluorouracil-induced myocardial injury and mitochondrial autophagy in aging rats. Exp Ther Med. 2021;22(6):1451.
    View this article via: CrossRef PubMed Google Scholar
  190. Hunter RB, et al. Activation of an alternative NF-kappaB pathway in skeletal muscle during disuse atrophy. FASEB J. 2002;16(6):529–538.
    View this article via: CrossRef PubMed Google Scholar
  191. Cai D, et al. IKKbeta/NF-kappaB activation causes severe muscle wasting in mice. Cell. 2004;119(2):285–298.
    View this article via: CrossRef PubMed Google Scholar
  192. Bodine SC, et al. Identification of ubiquitin ligases required for skeletal muscle atrophy. Science. 2001;294(5547):1704–1708.
    View this article via: CrossRef PubMed Google Scholar
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  • Top
  • Abstract
  • Introduction
  • Scope and considerations
  • Mechanisms of muscle and fat loss in cancer cachexia
  • Adverse interorgan effects of cancer therapy and cachexia
  • Convergence of treatment toxicity and cachexia
  • Mechanisms of treatment toxicity and cachexia
  • Chemotherapy
  • Immunotherapy
  • Surgery and radiotherapy
  • Targeted therapy
  • Converging mechanisms across organs
  • Reversibility of cachexia drivers
  • Dynamic effects of cancer therapy and cachexia
  • Considerations for clinical trials for patients with cancer
  • Future directions for patient-based research
  • Conclusion
  • Supplemental material
  • Acknowledgments
  • Footnotes
  • References
  • Version history
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