After reviewing the abstracts of 124 non-duplicate studies, we removed 97 studies due to the following reason: the study was not about TGF-β1 or pulmonary fibrosis (n = 39); they did not have an abstract (n = 5); or they were not the original research articles (n = 53), that is, if they were reviews (n = 46), meeting reports (n = 2), or meta-analysis (n = 5). The gene discussed is TGFB1; the disease is pulmonary fibrosis.