Although caution is warranted given the small number of patients, a detection rate of 75% is in line with that found in a previous study in non‐small‐cell lung cancer patients: This study compared the detection of the EGFR p.T790M mutation in ctDNA with that in tumor and reported a sensitivity of 70% (Oxnard et al., 2016). This evidence concerns the gene EGFR and neoplasm.