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Evidence for the genetic role of human leukocyte antigens in low frequency DRBI*1501 multiple sclerosis patients in IsraelDepartment of Neurology, Hadassah University Hospital, Hebrew University Hadassah Medical School, Jerusalem, Israel
Department of Psychiatry, Hadassah University Hospital, Hebrew University Hadassah Medical School, Jerusalem, Israel
Tissue Typing Unit, Hadassah University Hospital, Hebrew University Hadassah Medical School, Jerusalem, Israel, Lautenberg Cen ter for Gen eral an d Tumor Immun ology, Hadassah University Hospital, Hebrew University Hadassah Medical School, Jerusalem, Israel
Department of Neurology, Hadassah University Hospital, Hebrew University Hadassah Medical School, Jerusalem, Israel
Department of Neurology, University of California, San Francisco, California, USA
Department of Neurology, University of California, San Francisco, California, USA
Department of Neurology, Barzilai Medical Center, Ashkelon, Israel
Department of Neurology, Hadassah University Hospital, Hebrew University Hadassah Medical School, Jerusalem, Israel
Department of Neurology, Tel Aviv Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel-Avi, Israel
Tissue Typing Unit, Hadassah University Hospital, Hebrew University Hadassah Medical School, Jerusalem, Israel, Lautenberg Cen ter for Gen eral an d Tumor Immun ology, Hadassah University Hospital, Hebrew University Hadassah Medical School, Jerusalem, Israel A strong association exist between m ultiple sclerosis (MS) and the DRB1 *1SO 1 haplotype, in most populations. Linkage of Multiple Sclerosis (MS) with the MHC or HLA region on chromosome 6p2I has previously been observed in DRBI*1SO positive MS families. A group of 13 Israeli multiplex MS families with a very low frequency of DRB 1*1SO1 haplotype were examined in this study. Association and a linkage test were performed in order to identify a non-DRB1*1SO effect of HLA on susceptibility for MS. MS multiplex families and healthy controls were molecularly typed for six highly polymorphic markers located within the MHC region: DRBS, DQAI and DQBI, BAT-2, MIB and D65248. Dta analyses included: (a) an association study comparing the patient group with both healthy relative, and healthy control groups (b) a transmission test for linkage disequilibrium (TDT) of the MS-associated alleles in the multiplex families, and (c) multipoint non-parametric linkage (NPL) and parametric LOD score analyses using the GENEHUNTER program. The DRBI * 1303 allele was significandy more frequent among the MS patiens There was a trend towards transmission disequilibrium of DRBS *1303, but was not statistically significant. Allele sharing and LOD score analyses revealed no evidence for linkage. The high frequency of DRBI * 1303 observed in our family patient provides evidence to support the association with this allele that previously described in sporadic non-Ashkenazi MS patiens Th us, DRBI * 1303 may serve as genetic risk factor for MS. Our study exemplifies the genetic heterogeneity in MS as there is a genetic effect of HLA on MS susceptibility in our low frequency DRBS*1SO0 patient.
Key Words: human leukocyte antigens (HLA) major histocompatibility complex (MHC) Multiple Sclerosis (MS) linkage analysis association study GENEHUNTER
Multiple Sclerosis, Vol. 5, No. 6,
410-415 (1999) This article has been cited by other articles:
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