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Ref Type | Journal Article | ||||||||||||
PMID | (37879233) | ||||||||||||
Authors | Phadnis S, Wang X, Daw NC, Herzog CE, Subbiah IM, Zaky W, Gouda MA, Morani AC, Amini B, Harrison DJ, Piha-Paul SA, Meric-Bernstam F, Gorlick R, Schwartz CL, Subbiah V | ||||||||||||
Title | Everolimus in combination with vandetanib in children, adolescents, and young adults: a phase I study. | ||||||||||||
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Abstract Text | Combined use of inhibitors of mammalian target of rapamycin (mTOR) and vascular endothelial growth factor (VEGF-2) receptors is a potential strategy to overcome resistance to either class of drugs when used alone.We designed a phase 1 trial to test the drug combination of a multikinase VEGF receptor 2 inhibitor, vandetanib, and an mTOR inhibitor, everolimus, in a pediatric and young adult patient cohort with advanced cancers. Exceptional responders were probed for tumor mutational profile to explore possible molecular mechanisms of response.Among 21 enrolled patients, clinical benefit was observed in 38% (one patient with partial response and eight patients with stable disease) with a median progression-free survival of 3.3 months. The most common treatment-related adverse event was rash (n = 13). Other treatment-related toxicities included diarrhea, fatigue, hypertension, QT prolongation, hypertriglyceridemia/hypercholesterolemia, transaminitis, thrombocytopenia, and weight loss. None of the patients experienced dose-limiting toxicities. Three exceptional responders were analyzed and were found to harbor genetic alterations including kinase insert domain receptor (KDR) Q472H mutation, EWSR1-CREB3L1, CDKN2A/B loss, and ASPL/ASPSCR1-TFE3 fusion.The combination of vandetanib and everolimus showed early activity and tolerable toxicity profile in pediatric patients with advanced cancers. |