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Targeting mutations in cancer
Michael R. Waarts, … , Young C. Park, Ross L. Levine
Michael R. Waarts, … , Young C. Park, Ross L. Levine
Published April 15, 2022
Citation Information: J Clin Invest. 2022;132(8):e154943. https://doi.org/10.1172/JCI154943.
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Review Series

Targeting mutations in cancer

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Abstract

Targeted therapies have come to play an increasingly important role in cancer therapy over the past two decades. This success has been made possible in large part by technological advances in sequencing, which have greatly advanced our understanding of the mutational landscape of human cancer and the genetic drivers present in individual tumors. We are rapidly discovering a growing number of mutations that occur in targetable pathways, and thus tumor genetic testing has become an important component in the choice of appropriate therapies. Targeted therapy has dramatically transformed treatment outcomes and disease prognosis in some settings, whereas in other oncologic contexts, targeted approaches have yet to demonstrate considerable clinical efficacy. In this Review, we summarize the current knowledge of targetable mutations that occur in a range of cancers, including hematologic malignancies and solid tumors such as non–small cell lung cancer and breast cancer. We outline seminal examples of druggable mutations and targeting modalities and address the clinical and research challenges that must be overcome to maximize therapeutic benefit.

Authors

Michael R. Waarts, Aaron J. Stonestrom, Young C. Park, Ross L. Levine

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Figure 2

Targeting modalities for targeted therapies in cancer.

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Targeting modalities for targeted therapies in cancer.
Common modes of d...
Common modes of druggability associated with clinically approved molecules are depicted using the HER1/HER2 RTKs as examples. FDA-approved targeted therapies include small-molecule inhibitors and mAbs. Small-molecule inhibitors are commonly classified on the basis of the mechanism by which they bind their targets (inset). Small-molecule inhibitors in cancer can directly inhibit a mutant protein product, inhibit an overactive/overabundant protein product along with WT protein, or inhibit a signaling effector downstream of a mutated protein. In addition to inhibitors, mAbs are approved either with or without the addition of a drug conjugate, which, besides activating antibody-dependent cellular cytotoxicity (ADCC), also delivers cytotoxic payloads to targeted cells. DFG, aspartate-phenylalanine-glycine motif.

Copyright © 2025 American Society for Clinical Investigation
ISSN: 0021-9738 (print), 1558-8238 (online)

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