The hOGG1, which is generally involved in DNA repair, has been studied extensively on its relationship with different types of cancer, such as breast [6]–[18], prostate [19]–[25], pancreatic [26], [27], bladder [28]–[34], gallbladder [35]–[38], gastric [39]–[49], colorectal [50]–[63], esophageal [64]–[68], lung [69]–[85], cervical cancers [86], [87], and so on [88]–[101]. The gene discussed is OGG1; the disease is cancer.