p53 expression in pulmonary fibroblasts was extensively researched by Nagaraja et al. in 2018 who showed that p53 expression is reduced in pulmonary fibroblasts in IPF patients and murine bleomycin-induced pulmonary fibrosis compared with its expression in normal pulmonary fibroblasts [71]. The gene discussed is TP53; the disease is idiopathic pulmonary fibrosis.