Abstract 12445: Association of Remnant Cholesterol With Incident Cardiovascular Disease Among Koreans: A National Population-Based Study

Abstract

Aims: We sought to investigate the association of remnant cholesterol (remnant-C) and low-density lipoprotein cholesterol (LDL-C) levels with incident atherosclerotic cardiovascular disease (ASCVD) in various subgroups among Koreans. Methods: National Health Information Database, collated by Korean National Health Insurance System, was used for analysis. Among the individuals between 40 and 70 years of age and without history of cerebro-cardiovascular disease, those who had twice or more health screenings between 2009 and 2011 were selected. All subjects were divided into 4 groups by LDL-C level of 3.4 mmol/L (130mg/dL) and remnant-C level of 0.8mmol/L (30mg/dL). The primary outcome was defined as the incidence of ASCVD. Results: 3,686,034 individuals (45.6% women) fulfilled the study requirements. By the end of 2017, 144,004 ASCVD events occurred. High remnant-C and low LDL-C group was 19% of total. Compared with low remnant-C and low LDL-C group, the high remnant-C and high LDL-C group had highest ASCVD risk (HR 1.266, CI 1.243-1.289) and the high remnant-C alone group (HR 1.102, CI 1.087-1.118) had similar ASCVD risk to the high LDL-C alone group (HR 1.098, CI 1.083-1.113). The association of high remnant-C (≥0.8 mmol/L) with an increased ASCVD risk was consistent across various strata. Remnant-C levels remained significantly to associate with ASCVD after adjustment for several confounders, including LDL-C levels. Conclusions: Elevated remnant-C values, apart from LDL-C levels, were independently associated with a risk of incident ASCVD. Combination of high LDL-C and high remnant-C levels better predicted ASCVD incidence than each one alone. Therefore, we might take into account remnant-C measurement in risk stratification for primary prevention of ASCVD.