Enriched genes including S100A12 [772], MPO (myeloperoxidase) [773], S100A8 [774], CXCL10 [775], S100A9 [774], CD244 [775], CD244 [776],and TLR7 [777] have been linked to dermatomyositis. The gene discussed is MPO; the disease is dermatomyositis.