Genomic analysis was performed using the Foundation Medicine (FM) comprehensive genomic profiling (CGP) database (GDB) of 37,233 CRC cases…COH cohort, 6 patients with RASa (13‐54 copies) received EGFRmAb; 4/6 had progressive disease, 2 had stable disease; median time to treatment discontinuation (TTD) was 2.5 months.