Blocking Immune Molecule IL-21 May Be Target as MPO-AAV Therapy
Levels of the immune signaling molecule interleukin-21 (IL-21) and the cells that produce the protein were elevated in the blood of people with ANCA-associated vasculitis (AAV) with myeloperoxidase (MPO) antibodies, a study found. IL-21 levels also were linked to higher MPO levels and disease activity, suggesting its direct involvement in…