PMID- 10777671 OWN - NLM STAT- MEDLINE DCOM- 20000605 LR - 20111117 IS - 0888-7543 (Print) IS - 0888-7543 (Linking) VI - 65 IP - 1 DP - 2000 Apr 1 TI - Linkage of human narcolepsy with HLA association to chromosome 4p13-q21. PG - 84-6 AB - Although narcolepsy is highly associated with human leukocyte antigen (HLA) DQ6/DQB1*0602 and/or DR2/DRB1*1501, most individuals with the HLA haplotype are free of narcolepsy. This indicates that HLA alone makes a relatively small contribution to the development of narcolepsy and that a non-HLA gene(s) can contribute to the genetic predisposition even in narcoleptic cases with HLA association. We conducted a genome-wide linkage search for narcolepsy in eight Japanese families with 21 DR2-positive patients (14 narcoleptic cases with cataplexy and 7 cases with an incomplete form of narcolepsy). A lod score of 3.09 suggested linkage to chromosome 4p13-q21. A lod score of 1.53 was obtained at the HLA-DRB1 locus, though this lod score may be biased since all the affected patients and many of the family members were DR2-positive. No other loci including hypocretin, hypocretin receptor 1, and hypocretin receptor 2 had lod scores greater than 1.0. The present study suggests that chromosome 4p13-q21 contains a second locus for HLA-associated human narcolepsy. CI - Copyright 2000 Academic Press. FAU - Nakayama, J AU - Nakayama J AD - Department of Medical Genetics, Institute of Basic Medical Sciences, University of Tsukuba, Tsukuba, 305-8575, Japan. FAU - Miura, M AU - Miura M FAU - Honda, M AU - Honda M FAU - Miki, T AU - Miki T FAU - Honda, Y AU - Honda Y FAU - Arinami, T AU - Arinami T LA - eng PT - Journal Article PL - United States TA - Genomics JT - Genomics JID - 8800135 RN - 0 (HLA Antigens) RN - 0 (HLA-DR Antigens) RN - 0 (HLA-DR2 Antigen) RN - 0 (HLA-DRB1 Chains) SB - IM MH - Chromosome Mapping MH - Chromosomes, Human, Pair 4/*genetics MH - Family Health MH - Female MH - Genetic Linkage MH - HLA Antigens/*genetics MH - HLA-DR Antigens/genetics MH - HLA-DR2 Antigen/genetics MH - HLA-DRB1 Chains MH - Humans MH - Lod Score MH - Male MH - Microsatellite Repeats MH - Narcolepsy/*genetics MH - Pedigree EDAT- 2000/04/25 09:00 MHDA- 2000/06/10 09:00 CRDT- 2000/04/25 09:00 PHST- 2000/04/25 09:00 [pubmed] PHST- 2000/06/10 09:00 [medline] PHST- 2000/04/25 09:00 [entrez] AID - S0888-7543(00)96143-3 [pii] AID - 10.1006/geno.2000.6143 [doi] PST - ppublish SO - Genomics. 2000 Apr 1;65(1):84-6. doi: 10.1006/geno.2000.6143.