Generally, the high ICOS expression cohort showed high CNA frequency, with more deletion in tumor-suppressive genes, including CDKN2A, CDKN2B, MTAP, MLLT3, and PTEN, while with more amplification in oncogenic genes, including EGFR, CDK4, FIP1L1, PDGFRA, CHIC2, PIK3C2B, KIT, MDM4, MBD6, and DDIT3. The gene discussed is PIK3C2B; the disease is neoplasm.