In the ICI-treated COAD cohort (Figure 2A), the genes with the top 20 mutation frequencies were APC, KRAS, TP53, PIK3CA, KMT2D, ARID1A, PTPRS, RNF43, KMT2C, TCF7L2, ZFHX3, FAT1, NCOR1, SMARCA4, NF1, PTCH1, SMAD4, ARID1B, BRCA2 and CREBBP. The gene discussed is TCF7L2; the disease is colon adenocarcinoma.