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Ref Type Journal Article
PMID (27683183)
Authors Kato S, Subbiah V, Marchlik E, Elkin SK, Carter JL, Kurzrock R
Title RET Aberrations in Diverse Cancers: Next-Generation Sequencing of 4,871 Patients.
Journal Vol Issue Date Pages Journal Short Title
Clinical cancer research : an official journal of the American Association for Cancer Research 23 8 2017 Apr 15 1988-1997 Clin Cancer Res
URL
Abstract Text Purpose: Aberrations in genetic sequences encoding the tyrosine kinase receptor RET lead to oncogenic signaling that is targetable with anti-RET multikinase inhibitors. Understanding the comprehensive genomic landscape of RET aberrations across multiple cancers may facilitate clinical trial development targeting RETExperimental Design: We interrogated the molecular portfolio of 4,871 patients with diverse malignancies for the presence of RET aberrations using Clinical Laboratory Improvement Amendments-certified targeted next-generation sequencing of 182 or 236 gene panels.Results: Among diverse cancers, RET aberrations were identified in 88 cases [1.8% (88/4, 871)], with mutations being the most common alteration [38.6% (34/88)], followed by fusions [30.7% (27/88), including a novel SQSTM1-RET] and amplifications [25% (22/88)]. Most patients had coexisting aberrations in addition to RET anomalies [81.8% (72/88)], with the most common being in TP53-associated genes [59.1% (52/88)], cell cycle-associated genes [39.8% (35/88)], the PI3K signaling pathway [30.7% (27/88)], MAPK effectors [22.7% (20/88)], or other tyrosine kinase families [21.6% (19/88)]. RET fusions were mutually exclusive with MAPK signaling pathway alterations. All 72 patients harboring coaberrations had distinct genomic portfolios, and most [98.6% (71/72)] had potentially targetable coaberrations with either an FDA-approved or an investigational agent. Two cases with lung (KIF5B-RET) and medullary thyroid carcinoma (RET M918T) that responded to a vandetanib (multikinase RET inhibitor)-containing regimen are shown.Conclusions:RET aberrations were seen in 1.8% of diverse cancers, with most cases harboring actionable, albeit distinct, coexisting alterations. The current report suggests that optimal targeting of patients with RET anomalies will require customized combination strategies. Clin Cancer Res; 23(8); 1988-97. ©2016 AACR.

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