PMID- 19439981 OWN - NLM STAT- MEDLINE DCOM- 20091012 LR - 20131121 IS - 1423-0097 (Electronic) IS - 1018-2438 (Linking) VI - 150 IP - 2 DP - 2009 TI - The HLA DRB1*1501-DQB1*0602-DPB1*0501 haplotype is a risk factor for toluene diisocyanate-induced occupational asthma. PG - 156-63 LID - 10.1159/000218118 [doi] AB - BACKGROUND: Although the pathogenesis of toluene diisocyanate (TDI)-induced occupational asthma (TDI-OA) is incompletely understood, several studies have suggested immunologic mechanisms, including specific IgE responses. A few studies have suggested human leukocyte antigen (HLA) associations with TDI-induced asthma in Western countries, but this is the first investigation of associations between HLA class I and II alleles and TDI-induced asthma patients in Asia, using high-resolution analysis. METHODS: Patients with TDI-OA (n = 84), asymptomatic exposed controls (AECs, n = 47) and unexposed normal controls (NCs, n = 127) were enrolled. HLA class I and II genotyping was performed by the direct DNA sequencing analysis. Specific serum IgE antibodies to the vapor type TDI-albumin conjugate were measured by ELISA. RESULTS: There was no significant association between the allele frequencies and the phenotype of TDI-OA. However, the frequency of the HLA DRB1*1501-DQB1*0602-DPB1*0501 haplotype was significantly higher in TDI-OA patients (19%) than in AEC (2.1%, p = 0.007, OR 4.429, CI 1.497-13.103) or NC (3.1%, p < 0.001, OR 7.235, CI 2.236-22.510) subjects, with statistical significance persisting after correction for multiple comparisons. DQB1*0402 was significantly associated with the presence of specific IgE to TDI-albumin conjugates in serum (p = 0.006, OR 4.552, CI 1.540-13.449). This p value remained significant after correction for multiple comparison. CONCLUSION: The HLA DRB1*1501-DQB1*0602-DPB1*0501 haplotype may be a genetic marker for the development of TDI-induced asthma in Koreans. Several HLA alleles that enhance specific IgE sensitization in exposed subjects are indicated. CI - (c) 2009 S. Karger AG, Basel. FAU - Choi, Jeong-Hee AU - Choi JH AD - Department of Internal Medicine, Hallym University, Anyang, Korea. FAU - Lee, Kyung-Wha AU - Lee KW FAU - Kim, Cheol-Woo AU - Kim CW FAU - Park, Choon-Sik AU - Park CS FAU - Lee, Hyun-Young AU - Lee HY FAU - Hur, Gyu-Young AU - Hur GY FAU - Kim, Seung-Hyun AU - Kim SH FAU - Hong, Chein-Soo AU - Hong CS FAU - Jang, An-Soo AU - Jang AS FAU - Park, Hae-Sim AU - Park HS LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090512 PL - Switzerland TA - Int Arch Allergy Immunol JT - International archives of allergy and immunology JID - 9211652 RN - 0 (HLA-DP Antigens) RN - 0 (HLA-DP beta-Chains) RN - 0 (HLA-DPB1*05:01 antigen) 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) RN - 0 (HLA-DRB1*15:01 antigen) RN - 0 (Membrane Glycoproteins) RN - 17X7AFZ1GH (Toluene 2,4-Diisocyanate) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Adult MH - Asthma/*chemically induced/*genetics/physiopathology MH - Female MH - Forced Expiratory Volume/physiology MH - Gene Frequency/genetics MH - HLA-DP Antigens/*genetics MH - HLA-DP beta-Chains MH - HLA-DQ Antigens/*genetics MH - HLA-DQ beta-Chains MH - HLA-DR Antigens/*genetics MH - HLA-DRB1 Chains MH - Haplotypes/*genetics MH - Humans MH - Immunoglobulin E/blood/immunology MH - Korea MH - Male MH - Membrane Glycoproteins/*genetics MH - Middle Aged MH - Occupational Diseases/chemically induced/*genetics/immunology MH - Risk Factors MH - Toluene 2,4-Diisocyanate/*adverse effects/immunology EDAT- 2009/05/15 09:00 MHDA- 2009/10/13 06:00 CRDT- 2009/05/15 09:00 PHST- 2008/08/27 00:00 [received] PHST- 2008/12/23 00:00 [accepted] PHST- 2009/05/15 09:00 [entrez] PHST- 2009/05/15 09:00 [pubmed] PHST- 2009/10/13 06:00 [medline] AID - 000218118 [pii] AID - 10.1159/000218118 [doi] PST - ppublish SO - Int Arch Allergy Immunol. 2009;150(2):156-63. doi: 10.1159/000218118. Epub 2009 May 12.