PMID- 11535234 OWN - NLM STAT- MEDLINE DCOM- 20011204 LR - 20221207 IS - 0022-510X (Print) IS - 0022-510X (Linking) VI - 189 IP - 1-2 DP - 2001 Aug 15 TI - Heterogeneous immunogenetic background in Japanese adults with myasthenia gravis. PG - 59-64 AB - The aim of this study was to elucidate the roles of human leukocyte antigen (HLA) class II genes in disease susceptibility in Japanese adult patients with myasthenia gravis (MG). A number of studies have shown that MG is correlated with DR3 in Caucasians. In Japanese, infantile MG is associated with DR9, but the HLA class II alleles associated with adult MG remains unclear. HLA-DRB1 and DQB1 alleles were determined by genotyping in 75 Japanese adult patients with MG and in 115 race-matched healthy adults. No statistically significant difference was observed in the overall prevalences of DRB1 and DQB1 alleles between MG patients and healthy controls, even when the patients and controls were stratified on the basis of their gender. MG patients with DQB1*0604 were younger and those with DQB1*0402 were older at disease onset than those without (P=0.03 and 0.008, respectively). Concomitant autoimmune thyroid disease was associated with DRB1*0803 (P=0.0009, corrected P=0.04). In addition, anti-acetylcholine receptor antibody levels were significantly higher in patients with DQB1*0604 than in those without (P=0.045). These findings indicate that immunogenetic backgrounds in Japanese adult MG patients are heterogeneous and are apparently different from those in Caucasian patients. FAU - Suzuki, S AU - Suzuki S AD - Department of Neurology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan. FAU - Kuwana, M AU - Kuwana M FAU - Yasuoka, H AU - Yasuoka H FAU - Tanaka, K AU - Tanaka K FAU - Fukuuchi, Y AU - Fukuuchi Y FAU - Kawakami, Y AU - Kawakami Y LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - J Neurol Sci JT - Journal of the neurological sciences JID - 0375403 RN - 0 (HLA-DQ Antigens) RN - 0 (HLA-DQ beta-Chains) RN - 0 (HLA-DQB1 antigen) RN - 0 (HLA-DR Antigens) RN - 0 (HLA-DRB1 Chains) SB - IM MH - Adult MH - Age of Onset MH - Alleles MH - Asian People/*genetics MH - Autoimmune Diseases/*ethnology/genetics/immunology MH - Comorbidity MH - Female MH - Gene Frequency MH - Genetic Predisposition to Disease MH - Genotype MH - HLA-DQ Antigens/*genetics MH - HLA-DQ beta-Chains MH - HLA-DR Antigens/*genetics MH - HLA-DRB1 Chains MH - Humans MH - Japan/epidemiology MH - Male MH - Myasthenia Gravis/*ethnology/genetics/immunology MH - Thyroiditis, Autoimmune/epidemiology MH - White People/genetics EDAT- 2001/09/06 10:00 MHDA- 2002/01/05 10:01 CRDT- 2001/09/06 10:00 PHST- 2001/09/06 10:00 [pubmed] PHST- 2002/01/05 10:01 [medline] PHST- 2001/09/06 10:00 [entrez] AID - S0022510X01005603 [pii] AID - 10.1016/s0022-510x(01)00560-3 [doi] PST - ppublish SO - J Neurol Sci. 2001 Aug 15;189(1-2):59-64. doi: 10.1016/s0022-510x(01)00560-3.