Extended Data Fig. 1: Validation of predictive value of ctDNA MRD after chemoradiation therapy (CRT) alone.

a, Event chart showing timing of therapy, progression based on RECIST 1.1 evaluation of imaging, and results of ctDNA testing for each patient. b, Kaplan-Meier analysis of freedom from progression stratified by ctDNA detection within 4 months of completing CRT (n=6 not detected, n=6 detected). P values were calculated using a two-sided log-rank test.