Annabelle Rodriguez1. 1. Cell Biology, Linda and David Roth Chair of Cardiovascular Health, Center for Vascular Biology, University of Connecticut Health, 263 Farmington Avenue, Farmington, CT, 06030, USA. rodriguezoquendo@uchc.edu.
Abstract
PURPOSE OF THE REVIEW: To evaluate recent studies related to the paradox of high HDL-C with mortality and atherosclerotic cardiovascular disease (ASCVD) risk. RECENT FINDINGS: Two observational studies (Cardiovascular Health in Ambulatory Care Research Team [CANHEART] and Copenhagen City Heart Study and the Copenhagen General Population Study [Copenhagen Heart Studies]) of adults without pre-existing ASCVD have shown a significant U-shaped association of HDL-C with all-cause and cause-specific mortality. Both studies showed that low HDL-C levels consistently increased hazard risk (HR) for all-cause and cause-specific mortality. In the CANHEART study, high HDL-C levels, HDL-C > 90 mg/dL, were associated with increased HR for non-CVD/non-cancer mortality. In the Copenhagen Heart Studies, women with HDL-C ≥ 135 mg/dL showed increased HR for all-cause and CVD mortality, while men with HDL-C > 97 mg/dL showed increased HR for all-cause and CVD mortality. Genetic association studies failed to show that genetic etiologies of high HDL-C significantly reduced risk for myocardial infarction (MI), while hepatocyte nuclear factor-4 (HNF4A) was significantly associated with high HDL-C and increased MI risk. Candidate gene studies have identified scavenger receptor B class I (SCARB1) and lymphocyte activation gene-3 (LAG3) as genes significantly associated with high HDL-C and increased MI risk. Low HDL-C remains as a significant factor for increased disease risk while high HDL-C levels are not associated with cardioprotection. Clinical CVD risk calculators need revision.
PURPOSE OF THE REVIEW: To evaluate recent studies related to the paradox of high HDL-C with mortality and atherosclerotic cardiovascular disease (ASCVD) risk. RECENT FINDINGS: Two observational studies (Cardiovascular Health in Ambulatory Care Research Team [CANHEART] and Copenhagen City Heart Study and the Copenhagen General Population Study [Copenhagen Heart Studies]) of adults without pre-existing ASCVD have shown a significant U-shaped association of HDL-C with all-cause and cause-specific mortality. Both studies showed that low HDL-C levels consistently increased hazard risk (HR) for all-cause and cause-specific mortality. In the CANHEART study, high HDL-C levels, HDL-C > 90 mg/dL, were associated with increased HR for non-CVD/non-cancer mortality. In the Copenhagen Heart Studies, women with HDL-C ≥ 135 mg/dL showed increased HR for all-cause and CVDmortality, while men with HDL-C > 97 mg/dL showed increased HR for all-cause and CVDmortality. Genetic association studies failed to show that genetic etiologies of high HDL-C significantly reduced risk for myocardial infarction (MI), while hepatocyte nuclear factor-4 (HNF4A) was significantly associated with high HDL-C and increased MI risk. Candidate gene studies have identified scavenger receptor B class I (SCARB1) and lymphocyte activation gene-3 (LAG3) as genes significantly associated with high HDL-C and increased MI risk. Low HDL-C remains as a significant factor for increased disease risk while high HDL-C levels are not associated with cardioprotection. Clinical CVD risk calculators need revision.
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