FATP5 promotor polymorphism (rs56225452), representing a putative gain-of-function mutation in the FATP5 promotor, correlated with BMI-dependent hepatic steatosis in males with biopsy proven NAFLD (n = 103) [20], suggesting that genetic variation may underlie part of the contribution of FATP5 in NAFLD. The gene discussed is SLC27A5; the disease is fatty liver disease.