Abstract
Human leukocyte antigens (HLA) have been linked to adverse drug reactions. Generally, HLA association is phenotype specific and is related to either liver or skin injury. HLA-A*13:01 has been linked to dapsone-induced severe cutaneous drug reactions and its role in drug-induced liver injury (DILI) is unclear. In our series, all of the four patients with immunoallergic dapsone DILI were carrying HLA-B*13:01 compared to its prevalence of 1-12% among Indians. HLA-B*13:01 plays a role not only in dapsone-induced severe cutaneous adverse reaction (SCAR) but also in dapsone-induced liver injury with immunoallergic features and highlights the role of adaptive immune response in the pathogenesis of both liver and skin injury and associated other organ involvement.
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