Epidermal growth factor (RR 3.83; 95% CrI 1.81, 9.10), plasma‐rich protein (PRP) (RR 3.36; 95% CrI 1.66, 8.03) and platelet‐derived growth factor (PDGF) (RR 2.47; 95% CrI 1.23, 5.17) significantly improved the likelihood of complete ulcer healing compared to control. The gene discussed is EGF; the disease is ulcer disease.