The results showed that the transcription levels of APOBEC1/3A/3G/3H in 28 kinds of cancer tissues, including PAAD, esophageal carcinoma (ESCA) and stomach adenocarcinoma (STAD), was higher than that in paracancerous tissues and normal tissues but lower (Figures 1A–D) in 13 other kinds of cancer tissues, including lymphoid neoplasm diffuse large B-cell lymphoma (DLBC), kidney chromophobe (KICH) and lung squamous cell carcinoma (LUSC). The gene discussed is APOBEC1; the disease is gastric adenocarcinoma.