CXCL13 and temporal arteritis: Further research identified increased levels of B cell–attracting chemokine-1/CXC motif ligand 13 (BCA1/CXCL13) and soluble IL-2 receptor α (sIL-2Rα) and lower levels of IFN-γ-induced protein 10/CXC motif chemokine 10 (IP10/CXCL10) in active as compared to inactive GCA [92].