FABP1 and heart failure: Since FABPs lack a secretory signal sequence, the presence of FABPs in serum has been considered to be a promising tissue-specific marker of tissue injury: FABP1 for liver damage [3], FABP2 for intestinal injury [4], [5], and FABP3 for acute myocardial infarction and ongoing myocardial damage in heart failure [6], [7].