The potential of CCR10 as a therapeutic target is suggested by its role in T cell–mediated skin inflammation such as psoriasis (6) and atopic or allergic-contact dermatitis (10, 15), in addition to its expression on lung epithelial cells in humanized mouse models of idiopathic pulmonary fibrosis (16). The gene discussed is CCR10; the disease is idiopathic pulmonary fibrosis.