title: 657del5 mutation in the gene for Nijmegen breakage syndrome (NBS1) in a cohort of Russian children with lymphoid tissue malignancies and controls.
abstract: Nijmegen breakage syndrome (NBS, OMIM 251260) is a rare hereditary disease, characterized by immune deficiency, microcephaly, and an extremely high incidence of lymphoid tissue malignancies. The gene mutated in NBS, NBS1, was recently cloned from its location on chromosome 8q21. The encoded protein, nibrin (p95), together with hMre11 and hRad50, is involved in the double-strand DNA break repair system. We screened two Russian cohorts for the 657del5 NBS1 mutation and found no carriers in 548 controls and two carriers in 68 patients with lymphoid malignancies: one with acute lymphoblastic leukemia (ALL) and one with non-Hodgkin lymphoma (NHL). Several relatives of the second patient, who were carriers of the same mutation, had cancer (ALL, breast cancer, GI cancers). These preliminary data suggest that NBS1 mutation carriers can be predisposed to malignant disorders.
authors.affiliation: Department of Immunology, Research Institute for Paediatric Hematology, Moscow, Russia. gashka@hadassah.org.il
authors.forename: Igor B
authors.initials: IB
authors.lastname: Resnick
authors.forename: Irina
authors.initials: I
authors.lastname: Kondratenko
authors.forename: Eugeni
authors.initials: E
authors.lastname: Pashanov
authors.forename: Alexey A
authors.initials: AA
authors.lastname: Maschan
authors.forename: Alexander
authors.initials: A
authors.lastname: Karachunsky
authors.forename: Oleg
authors.initials: O
authors.lastname: Togoev
authors.forename: Andrey
authors.initials: A
authors.lastname: Timakov
authors.forename: Alexander
authors.initials: A
authors.lastname: Polyakov
authors.forename: Svetlana
authors.initials: S
authors.lastname: Tverskaya
authors.forename: Oleg
authors.initials: O
authors.lastname: Evgrafov
authors.forename: Alexander G
authors.initials: AG
authors.lastname: Roumiantsev
mesh_terms: D001483:Base Sequence; D002648:Child; D002675:Child, Preschool; D019457:Chromosome Breakage / Q000235:genetics*; D002898:Chromosomes, Human, Pair 8; D015331:Cohort Studies; D020022:Genetic Predisposition to Disease; D005820:Genetic Testing; D006579:Heterozygote; D006801:Humans; D019656:Loss of Heterozygosity; D008228:Lymphoma, Non-Hodgkin / Q000235:genetics / Q000473:pathology; D008232:Lymphoproliferative Disorders / Q000235:genetics* / Q000473:pathology*; D008297:Male; D009154:Mutation; D010375:Pedigree; D010865:Pilot Projects; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000235:genetics / Q000473:pathology; D012426:Russia; D017384:Sequence Deletion; D013577:Syndrome