label: Turcot Syndrome Type 1
label_lc: turcot syndrome type 1
description: "An autosomal dominant hereditary neoplastic syndrome caused by mutations in the PMS2, MLH1, or MSH2 genes. It is characterized by the presence of glioblastoma and the absence of familiar adenomatous polyposis. Patients often develop hereditary nonpolyposis colorectal carcinoma."