Single-cell multi-omic approaches define common molecular and cellular signals of dominant antigen-driven cells at the site of drug-induced Stevens Johnson Syndrome and Toxic Epidermal Necrolysis (SJS/TEN) tissue damage

Human leukocyte antigen (HLA)-restricted CD8+ T-cells expressing dominant T-cell receptor (TCR) clonotypes are recently implicated drivers of keratinocyte cell death, cutaneous blistering, and mortality in drug-induced Stevens Johnson Syndrome/Toxic epidermal necrolysis (SJS/TEN). Signatures of these effector population(s) remain undefined in affected tissue but hold utility for early diagnosis and targeted therapy.