Tsukamoto et al. observed that epithelial cells were positively stained for Epstein-Barr virus-associated latent membrane protein 1 (LMP1) in 31% of the patients with IPF, whereas none of the patients with systemic sclerosis (SSc)-associated ILD or the controls showed this kind of positive staining. The gene discussed is PDLIM7; the disease is systemic sclerosis.