Patient III in the WW group received surgery and chemotherapy for jejunal well-differentiated adenocarcinoma at the age of 30s and ovarian clear cell carcinoma at the age of 40s, and the mother of this patient died from ovarian cancer; genetic testing results indicated this patient had an exon 1 germline mutation in the MLH1 gene. The gene discussed is MLH1; the disease is ovarian carcinoma.