title: Structure of the human MSH2 locus and analysis of two Muir-Torre kindreds for msh2 mutations.
abstract: Hereditary nonpolyposis colorectal carcinoma (HNPCC) is a major cancer susceptibility syndrome known to be caused by inheritance of mutations in genes such as hMSH2 and hMLH1, which encode components of a DNA mismatch repair system. The MSH2 genomic locus has been cloned and shown to cover approximately 73 kb of genomic DNA and to contain 16 exons. The sequence of all the intron-exon junctions has been determined and used to develop methods for analyzing each MSH2 exon for mutations. These methods have been used to analyze two large HNPCC kindreds exhibiting features of the Muir-Torre syndrome and demonstrate that cancer susceptibility is due to the inheritance of a frameshift mutation in the MSH2 gene in one family and a nonsense mutation in the MSH2 gene in the other family.
authors.affiliation: Division of Cell and Molecular Biology, Dana-Farber Cancer Institute, Boston, Massachusetts 02115.
authors.forename: R D
authors.initials: RD
authors.lastname: Kolodner
authors.forename: N R
authors.initials: NR
authors.lastname: Hall
authors.forename: J
authors.initials: J
authors.lastname: Lipford
authors.forename: M F
authors.initials: MF
authors.lastname: Kane
authors.forename: M R
authors.initials: MR
authors.lastname: Rao
authors.forename: P
authors.initials: P
authors.lastname: Morrison
authors.forename: L
authors.initials: L
authors.lastname: Wirth
authors.forename: P J
authors.initials: PJ
authors.lastname: Finan
authors.forename: J
authors.initials: J
authors.lastname: Burn
authors.forename: P
authors.initials: P
authors.lastname: Chapman
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D002889:Chromosomes, Human, Pair 2; D003001:Cloning, Molecular; D003123:Colorectal Neoplasms, Hereditary Nonpolyposis / Q000235:genetics*; D004247:DNA / Q000235:genetics; D004252:DNA Mutational Analysis; D017931:DNA Primers / Q000235:genetics; D004268:DNA-Binding Proteins; D005091:Exons; D005260:Female; D016368:Frameshift Mutation; D008040:Genetic Linkage; D006801:Humans; D007438:Introns; D008297:Male; D008969:Molecular Sequence Data; D051718:MutS Homolog 2 Protein; D009154:Mutation; D010375:Pedigree; D011518:Proto-Oncogene Proteins / Q000235:genetics*
chemical_list: D017931:DNA Primers; D004268:DNA-Binding Proteins; D011518:Proto-Oncogene Proteins; D004247:DNA; C497172:MSH2 protein, human; D051718:MutS Homolog 2 Protein