For comparison the prototype Th2 chemokine (C-C motif) ligand 2 (CCL2) was not significantly different in patients with MC+HCV and active vasculitis than in MC patients, and it suggests that the Th1 CXCL10 chemokine is specifically involved in the appearance of vasculitis in these patients [74]. The gene discussed is CCL2; the disease is vasculitis.