title: A common region of homozygous deletion in malignant human gliomas lies between the IFN alpha/omega gene cluster and the D9S171 locus.
abstract: Deletions of the 9p-localized type-I interferon (IFN) genes and adjacent loci often occur during the development of malignant glioma. We have applied restriction fragment length polymorphism and microsatellite analysis to 12 loci covering this region of 9p and 3 loci on 9q in 74 human glial tumor tissues to define and further localize the smallest region of hemizygous or homozygous deletion common to the tumors. Three regions of homozygous deletion were evident among the panel of tumors; only one of these, however, residing between D9S171 and the IFN alpha/omega gene cluster, was involved in multiple cases (13 glioblastomas). Hemizygous deletion of this same region was observed in an additional 27 tumors. In total these data indicate the frequent inactivation of a novel tumor suppressor gene residing adjacent to and centromeric of the type-I IFN genes in malignant gliomas.
authors.affiliation: Department of Pathology, Sahlgrenska Hospital, Gothenburg, Sweden.
authors.forename: K
authors.initials: K
authors.lastname: Ichimura
authors.forename: E E
authors.initials: EE
authors.lastname: Schmidt
authors.forename: N
authors.initials: N
authors.lastname: Yamaguchi
authors.forename: C D
authors.initials: CD
authors.lastname: James
authors.forename: V P
authors.initials: VP
authors.lastname: Collins
mesh_terms: D000483:Alleles; D001254:Astrocytoma / Q000235:genetics; D001932:Brain Neoplasms / Q000235:genetics*; D002899:Chromosomes, Human, Pair 9; D017353:Gene Deletion; D015972:Gene Expression Regulation, Neoplastic; D016147:Genes, Tumor Suppressor; D014644:Genetic Variation; D005909:Glioblastoma / Q000235:genetics; D005910:Glioma / Q000235:genetics*; D006801:Humans; D007370:Interferon Type I / Q000235:genetics*; D005810:Multigene Family
chemical_list: D007370:Interferon Type I; C063743:interferon omega 1