title: A novel splicing mutation (894-9 G --> A) of the MEN1 gene responsible for multiple endocrine neoplasia type 1.
abstract: Germline MEN1 gene mutations are responsible for multiple endocrine neoplasia type 1 (MEN1), a dominantly inherited cancer syndrome. We identified a MEN1 germline mutation 894-9 G --> A in three MEN1 patients from two unrelated families. This mutation was not present in any of the 100 blood samples from normal volunteers. The wild type MEN1 sequence was lost in the patient's pancreatic tumor. Abnormal mRNA was identified in the tumor, which retained an intronic sequence indicating aberrant mRNA splicing at a newly created splicing acceptor site. These findings indicate that this nucleotide substitution is, though previously reported to be a polymorphism, a causative splicing mutation.
authors.affiliation: Growth Factor Division, National Cancer Center Research Institute, Tokyo, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Kishi
authors.forename: T
authors.initials: T
authors.lastname: Tsukada
authors.forename: S
authors.initials: S
authors.lastname: Shimizu
authors.forename: K
authors.initials: K
authors.lastname: Hosono
authors.forename: T
authors.initials: T
authors.lastname: Ohkubo
authors.forename: T
authors.initials: T
authors.lastname: Kosuge
authors.forename: K
authors.initials: K
authors.lastname: Sugano
authors.forename: M
authors.initials: M
authors.lastname: Kanbe
authors.forename: T
authors.initials: T
authors.lastname: Obara
authors.forename: K
authors.initials: K
authors.lastname: Yamaguchi
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018761:Multiple Endocrine Neoplasia Type 1 / Q000235:genetics*; D009154:Mutation; D009363:Neoplasm Proteins / Q000235:genetics*; D011110:Polymorphism, Genetic; D011518:Proto-Oncogene Proteins; D012326:RNA Splicing
chemical_list: C105373:MEN1 protein, human; D009363:Neoplasm Proteins; D011518:Proto-Oncogene Proteins