Introduction

MET amplification has been implicated in signaling pathways that promote cell proliferation, invasion, and survival. It has been identified as an oncogenic driver in various malignancies and is currently being investigated as a potential therapeutic target. To date, MET exon 14 skipping by sequencing and MET amplification by FISH have been found to have potential clinical utility in predicting those patients who may derive benefit from MET-targeted therapy. However, little research has been conducted on alternative technologies to FISH such as CISH, which does not require a dark room and can be interpreted by a board-certified pathologist. The purpose of this study is to report our experience with MET amplification across solid tumors using CISH.