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In page Stevens–Johnson syndrome:

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Individuals expressing the human leukocyte antigen (i.e. HLA) serotypes HLA-B15:02 or HLA-A31:01 [5], genetical-based T cell receptors[citation needed], or variations in their efficiency to absorb, distribute to tissues, metabolize, or excrete (this combination is termed ADME) a drug are predisposed to develop SJS.[citation needed]