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Science. 1993 Oct 8;262(5131):242-4.

HLA-DPB1 glutamate 69: a genetic marker of beryllium disease.

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1
Postgraduate School of Cardiorespiratory Physiopathology, University of Roma, Italy.

Abstract

Chronic beryllium disease (CBD) is a lung disorder related to beryllium exposure and is characterized by the accumulation in the lung of beryllium-specific CD4+ major histocompatibility complex (MHC) class II-restricted T lymphocytes. Evaluation of MHC class II genes in 33 CBD cases and 44 controls has shown a negative association with HLA-DPB1*0401 (P < 0.001) and a positive association with HLA-DPB1*0201 (P < 0.05) alleles, which differ at residues 36, 55 to 56, and 69 of the beta 1 chain. Among CBD cases, 97 percent expressed the HLA-DPB1*0201-associated glutamic acid (unaffected population, 30 percent; P < 0.001) at residue 69, a position involved in susceptibility to autoimmune disorders. This suggests that HLA-DP has a role in conferring susceptibility and that residue 69 of HLA-DPB1 could be used in risk assessment for CBD.

PMID:
8105536
[Indexed for MEDLINE]
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