While decreased expression of A3G was observed in several tumor tissues compared with adjacent normal tissues, including breast invasive carcinoma (BRCA), colon adenocarcinoma(COAD), kidney chromophore (KICH), prostate adenocarcinoma (PRAD), rectum adenocarcinoma (READ), and uterine corpus endometrial carcinoma (UCEC). The gene discussed is APOBEC3G; the disease is neoplasm.