The Cancer Genome Atlas data, cBioPortal, provides information on genetic changes containing gene amplification, truncated mutation of BHLHE41/DEC2 in lung squamous cancer (LUSC), and data on amplification, point mutation, and SHROOM2-BHLHE41 gene fusion in LUAD; however, there are no data on mutation in small cell lung cancer (SCLC). Here, BHLHE41 is linked to cancer.