HMGN2 and small cell lung carcinoma: The top five genes were all overexpressed, namely the ISL1 (AUC = 1.00), HMGN2, CDKN2C, STMN1, and ACYP1. The GO of the differentially expressed genes of SCLC included mitotic cell cycle and DNA repair, while regulation of several metabolic processes was underrepresented.