PMID- 11132147 OWN - NLM STAT- MEDLINE DCOM- 20010118 LR - 20190831 IS - 0093-7711 (Print) IS - 0093-7711 (Linking) VI - 52 IP - 1-2 DP - 2000 Nov TI - Identification of a telomeric boundary of the HLA region with potential for predisposition to human narcolepsy. PG - 12-8 AB - We report on a study performed to determine a boundary of the region with the potential to contribute to the predisposition to human narcolepsy (the susceptibility region) in the human leukocyte antigen (HLA) region. We investigated a Japanese narcolepsy family, in which a de novo chromosomal recombination occurred between the HLA-DRB1 and HLA-B genes in the proband. The recombinant chromosome carrying HLA-DRB1*1501 was transmitted to the affected child and grandchild, suggesting that a strong genetic factor(s) predisposing to the disorder was (were) present on the chromosome, and that the recombination breakpoint could be regarded as a boundary to the susceptibility region. To search for the breakpoint, we carried out allele typing at various polymorphic sites, e.g., microsatellite repeat polymorphisms, restriction fragment length polymorphisms, and single-nucleotide polymorphisms in the HLA region, and examined haplotypes with the polymorphic sites in the family members. Haplotype analyses revealed that the recombination breakpoint was present approximately 50 kb to the telomeric side of the palmitoyl-protein thioesterase-2 (PPT2) gene in the HLA class III region. From the gene map of the HLA region, the cyclic AMP response element-binding protein-related protein gene (CREB-RP) appeared to be located at the telomeric end in the 50-kb region. Therefore, the data presented here suggest that the susceptibility region for the disorder in the family is present on the centromeric side of the CREB-RP gene in the recombinant Chromosome 6 carrying HLA-DRB1*1501. FAU - Miyagawa, T AU - Miyagawa T AD - Department of Human Genetics, Graduate School of Medicine, University of Tokyo, Japan. FAU - Hohjoh, H AU - Hohjoh H FAU - Honda, Y AU - Honda Y FAU - Juji, T AU - Juji T FAU - Tokunaga, K AU - Tokunaga K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Immunogenetics JT - Immunogenetics JID - 0420404 RN - 0 (HLA Antigens) RN - 0 (HLA-B Antigens) RN - 0 (HLA-DR Antigens) RN - 0 (HLA-DRB1 Chains) RN - 0 (NOTCH4 protein, human) RN - 0 (Proto-Oncogene Proteins) RN - 0 (Receptor, Notch4) RN - 0 (Receptors, Cell Surface) RN - 0 (Receptors, Notch) RN - EC 3.1.2.- (Thiolester Hydrolases) RN - EC 3.1.2.22 (palmitoyl-protein thioesterase) SB - IM MH - Female MH - Genetic Predisposition to Disease/genetics MH - HLA Antigens/*genetics MH - HLA-B Antigens/genetics MH - HLA-DR Antigens/genetics MH - HLA-DRB1 Chains MH - Haplotypes MH - Humans MH - Male MH - Microsatellite Repeats MH - Narcolepsy/*genetics MH - Pedigree MH - Polymorphism, Genetic MH - Proto-Oncogene Proteins/genetics MH - Receptor, Notch4 MH - *Receptors, Cell Surface MH - Receptors, Notch MH - Recombination, Genetic MH - Telomere/*genetics MH - Thiolester Hydrolases/genetics EDAT- 2000/12/29 11:00 MHDA- 2001/02/28 10:01 CRDT- 2000/12/29 11:00 PHST- 2000/12/29 11:00 [pubmed] PHST- 2001/02/28 10:01 [medline] PHST- 2000/12/29 11:00 [entrez] AID - 10.1007/s002510000245 [doi] PST - ppublish SO - Immunogenetics. 2000 Nov;52(1-2):12-8. doi: 10.1007/s002510000245.