Using the validated staining protocol, we found FGFR1 strongly expressed in 9% of SQCLC, which was comparable to what was published previously (10%).41 In AC, we found strong expression in 35% of samples compared to 13% published previously.41 In SCLC, we detected strong staining in 4% of samples, which was lower than the 7.2%‐43.7% previously reported.32, 41, 42 Different reasons could explain difference in prevalence of strong FGFR1 expression like the antibody used for staining, cutoff value for strong expression, and patients' characteristics. This evidence concerns the gene FGFR1 and small cell lung carcinoma.