PMID- 16792590 OWN - NLM STAT- MEDLINE DCOM- 20061128 LR - 20151119 IS - 0105-4538 (Print) IS - 0105-4538 (Linking) VI - 61 IP - 7 DP - 2006 Jul TI - HLA DRB1*15-DPB1*05 haplotype: a susceptible gene marker for isocyanate-induced occupational asthma? PG - 891-4 AB - BACKGROUND: There has been no study for evaluating the associations of human leukocyte antigen (HLA) class I and II alleles with toluene diisocyanate (TDI)-induced asthma in an Asian population. OBJECTIVE: The aim of this study was to investigate a susceptible or protective marker of HLA class I and II alleles in TDI-induced asthma. METHODS: Fifty-five patients with TDI-induced asthma patients (group I) showing positive responses on TDI bronchoprovocation test, 47 asymptomatic exposed subjects (group II) and 95 unexposed healthy nonatopic controls (group III) were enrolled in our study. HLA class I and II genotyping was done by the direct DNA sequencing method. RESULTS: The allelic frequency of C*09 (15.5%) was significantly higher in group I than in group III (6.8%, P = 0.019), but this statistical significance disappeared after correction was made for multiple comparisons. On two-locus and three-locus haplotype analysis, the allelic frequency of HLA DRB1*15-DPB1*05 in group I (10.6%) was significantly higher than that of group II (0%, P = 0.001) and group III (2.5%, P = 0.003). The allelic frequencies of HLA A*02-DRB1*15, A*02-DQB1*06, B*62-C*09 and A*02-DRB1*15-DQB1*06 were significantly higher in group I (8.5%, 10.3%, 8.2% and 6.8%, respectively) than those allelic frequencies of group III (1.3%, P = 0.002; 1.6%, P = 0.001; 0.6%, P < 0.0001; 0%, P < 0.0001, respectively). The allelic frequencies of HLA DQB1*06-DPB1*05 and DRB1*15-DQB1*06-DPB1*05 were significantly higher in group I (16.0% and 10.5%) than those in group II (2.5%, P = 0.001; 0%, P = 0.001), while the frequencies of DRB1*09-DPB1*05 and DRB1*09-DQB1*0303-DPB1*05 were significantly lower in group I (0% and 0%) than those of group II (7.4%, P = 0.004; 7.5%, P = 0.004). These differences remained statistically significant even after the correction for multiple comparisons. CONCLUSIONS: The HLA haplotype DRB1*15-DPB1*05 can be a susceptibility gene marker for the development of TDI-induced asthma among the exposed workers in the Korean population. FAU - Kim, S-H AU - Kim SH AD - Department of Allergy and Rheumatology, Ajou University School of Medicine, Suwon, Korea. FAU - Oh, H-B AU - Oh HB FAU - Lee, K-W AU - Lee KW FAU - Shin, E-S AU - Shin ES FAU - Kim, C-W AU - Kim CW FAU - Hong, C-S AU - Hong CS FAU - Nahm, D-H AU - Nahm DH FAU - Park, H-S AU - Park HS LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Denmark TA - Allergy JT - Allergy JID - 7804028 RN - 0 (Biomarkers) RN - 0 (Bronchoconstrictor Agents) RN - 0 (HLA-DP Antigens) RN - 0 (HLA-DP beta-Chains) RN - 0 (HLA-DPB1 antigen) RN - 0 (HLA-DR Antigens) RN - 0 (HLA-DRB1 Chains) RN - 0 (HLA-DRB1*15 antigen) RN - 0W5ETF9M2K (Methacholine Chloride) RN - 17X7AFZ1GH (Toluene 2,4-Diisocyanate) SB - IM MH - Adult MH - Asthma/chemically induced/*genetics MH - Biomarkers MH - Bronchial Provocation Tests MH - Bronchoconstrictor Agents/pharmacology MH - Case-Control Studies MH - Female MH - HLA-DP Antigens/*genetics MH - HLA-DP beta-Chains MH - HLA-DR Antigens/*genetics MH - HLA-DRB1 Chains MH - Haplotypes MH - Humans MH - Korea MH - Male MH - Methacholine Chloride/pharmacology MH - Middle Aged MH - Occupational Diseases/chemically induced/*genetics MH - Occupational Exposure/adverse effects MH - Skin Tests MH - Toluene 2,4-Diisocyanate/*toxicity EDAT- 2006/06/24 09:00 MHDA- 2006/12/09 09:00 CRDT- 2006/06/24 09:00 PHST- 2006/06/24 09:00 [pubmed] PHST- 2006/12/09 09:00 [medline] PHST- 2006/06/24 09:00 [entrez] AID - ALL1023 [pii] AID - 10.1111/j.1398-9995.2006.01023.x [doi] PST - ppublish SO - Allergy. 2006 Jul;61(7):891-4. doi: 10.1111/j.1398-9995.2006.01023.x.