Fig. 1: Overall survival Kaplan-Meier curves stratified by RECIST response and mutKRAS ctDNA status.

a Overall survival Kaplan–Meier curves, stratified by RECIST response at week 8 of chemotherapy. CR complete response, PR partial response, SD stable disease, PD progressive disease. b Overall survival Kaplan–Meier curves, stratified by mutKRAS ctDNA detected prior to starting chemotherapy. NE not estimated.