To date, the highest genetic risk factor for sporadic IPF is a common variant in single-nucleotide polymorphism (SNP) for MUC5B promoter region (rs35705950), which has been confirmed in several independent cohorts, predominantly in Caucasians (Allen et al., 2017; Hobbs et al., 2019). The gene discussed is MUC5B; the disease is idiopathic pulmonary fibrosis.