Mechanisms
Falling Lp(a) in MASLD reflects liver damage, not falling cardiovascular risk (Curr Cardiol Rep 2026)
Original title: The Implications of Lipoprotein(a) in MASLD
Narrative review of the paradoxical inverse relationship between lipoprotein(a) and metabolic dysfunction-associated steatotic liver disease (MASLD): Lp(a) levels fall as liver fibrosis advances even though cardiovascular risk stays elevated. The authors argue this decline reflects impaired hepatic synthetic function rather than a protective effect, driven by selective hepatic insulin resistance that diverts apoB100 away from Lp(a) assembly and by insulin directly suppressing apolipoprotein(a) synthesis; MASLD-associated genetic variants may further impair hepatic lipid secretion. The practical message is that a low Lp(a) in a patient with MASLD should not be read as reassuring.
Original abstract
Purpose Of Review: Lipoprotein(a) [Lp(a)] remains a well-established, genetically determined predictor of cardiovascular risk due to its pro-atherogenic and pro-thrombotic effects. This review examines the paradoxical relationship between Lp(a) and metabolic dysfunction-associated steatotic liver disease (MASLD), where Lp(a) levels decline with advanced fibrosis despite persistently elevated cardiovascular disease (CVD) risk.
Recent Findings: Studies consistently show an inverse association between Lp(a) and MASLD severity. Evidence suggests that lower Lp(a) levels are a consequence of hepatic dysfunction rather than protective against cardiovascular disease. Additionally, selective hepatic insulin resistance increases VLDL production, diverting apoB100 from Lp(a) assembly, while insulin directly suppresses apolipoprotein(a) synthesis. Genetic variants linked to MASLD may further impair hepatic lipid secretion and reduce Lp(a). Lower Lp(a) levels in MASLD likely reflect impaired hepatic synthetic function rather than reduced cardiovascular risk. Recognizing this paradox may improve risk stratification and interpretation of Lp(a) in patients with MASLD.
Summary written by lp-a.org from the published abstract; figures as published. Page updated 17 August 2026. Methods.