Abstract CT146: Sunitinib (S) in patients (Pts) with metastatic colorectal cancer (mCRC) with FLT-3 alterations: Results from the Targeted Agent and Profiling Utilization Registry (TAPUR) Study

Background: TAPUR is a phase II multi-basket study evaluating the anti-tumor activity of commercially available targeted agents in pts with advanced cancers with genomic alterations known to be drug targets. S is an oral multi-kinase inhibitor that inhibits Fms-like tyrosine kinase-3 (FLT-3) in biochemical and cellular assays. Results from mCRC pts each with FLT-3 amplification treated with S are reported. Methods: Simon’s optimal two stage design was used to test the null hypothesis of 15% response rate versus the alternative of 35%. Power and alpha were set at 85% and 10%, respectively. Response was assessed per RECIST v1.1. This design requires 10 pts in stage 1 and if