No correlation was found between the distal tubular damage marker H-FABP and ADPKD progression [31], but a recent animal-model study identified a strong correlation between urinary levels of liver-type fatty-acid-binding protein (L-FABP) and the progression of tubulo-interstitial damage in polycystic kidney disease [36]. The gene discussed is FABP1; the disease is polycystic kidney disease.