Sirolimus for the treatment of complicated vascular anomalies in children

AM Hammill, MS Wentzel, A Gupta… - Pediatric blood & …, 2011 - Wiley Online Library
AM Hammill, MS Wentzel, A Gupta, S Nelson, A Lucky, R Elluru, R Dasgupta, RG Azizkhan…
Pediatric blood & cancer, 2011Wiley Online Library
Background Vascular anomalies comprise a diverse group of diagnoses. While infantile
hemangiomas are common, the majority of these conditions are quite rare and have not
been widely studied. Some of these lesions, though benign, can impair vital structures, be
deforming, or even become life‐threatening. Vascular tumors such as kaposiform
hemangioendotheliomas (KHE) and complicated vascular malformations have proven
particularly difficult to treat. Procedure Here we retrospectively evaluate a series of six …
Background
Vascular anomalies comprise a diverse group of diagnoses. While infantile hemangiomas are common, the majority of these conditions are quite rare and have not been widely studied. Some of these lesions, though benign, can impair vital structures, be deforming, or even become life‐threatening. Vascular tumors such as kaposiform hemangioendotheliomas (KHE) and complicated vascular malformations have proven particularly difficult to treat.
Procedure
Here we retrospectively evaluate a series of six patients with complicated, life‐threatening vascular anomalies who were treated with the mTOR inhibitor sirolimus for compassionate use at two centers after failing multiple other therapies.
Results
These patients showed significant improvement in clinical status with tolerable side effects.
Conclusions
Sirolimus appears to be effective and safe in patients with life‐threatening vascular anomalies and represents an important tool in treating these diseases. These findings are currently being further evaluated in a Phase II safety and efficacy trial. Pediatr Blood Cancer 2011; 57: 1018–1024. © 2011 Wiley‐Liss, Inc.
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