Genomic studies in small cell lung cancer (SCLC) have also identified subgroups with MYC amplification, SOX‐2 amplification, FGFR‐1 amplification, PTEN loss, RICTOR amplification, and NOTCH inactivation.6, 7 Genomic identification in SCLC has clearly lagged behind that of NSCLC in part due to tissue availability. Here, SOX2 is linked to small cell lung carcinoma.