MUC4 (identified by credible set eQTL associations for rs200460259), which encodes airway mucins (Copin et al., 2000) is associated with severity of lung disease in cystic fibrosis (through functional annotation of another genome-wide signal) (Corvol et al., 2015) and risk of lung cancer (association with variants in the gene) (Zhang et al., 2013). The gene discussed is MUC4; the disease is cystic fibrosis.