Association of APOL1 With Heart Failure With Preserved Ejection Fraction in Postmenopausal African American Women.

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Citation: JAMA Cardiology. 3(8):712-720, 2018 Aug 01.PMID: 29971324Institution: MedStar Heart & Vascular InstituteForm of publication: Journal ArticleMedline article type(s): Journal ArticleSubject headings: *African Americans/ge [Genetics] | *Apolipoprotein L1/ge [Genetics] | *Heart Failure/ge [Genetics] | *Postmenopause | *Stroke Volume | Aged | Cardiovascular Diseases/mo [Mortality] | Cause of Death | Coronary Disease/ep [Epidemiology] | Coronary Disease/ge [Genetics] | Female | Genotype | Heart Failure/pp [Physiopathology] | Humans | Incidence | Middle Aged | Mortality | Renal Insufficiency, Chronic/ge [Genetics] | Stroke/ep [Epidemiology] | Stroke/ge [Genetics]Year: 2018Name of journal: JAMA cardiologyAbstract: Conclusions and Relevance: Status as a carrier of a high-risk APOL1 genotype was associated with HFpEF hospitalization among postmenopausal women, which is partly accounted for by baseline kidney function. These findings do not support an association of high-risk APOL1 genotypes with coronary heart disease, stroke, or mortality in postmenopausal African American women.Design, Setting, and Participants: The Women's Health Initiative is a prospective cohort that enrolled 161838 postmenopausal women into clinical trials and an observational study between 1993 and 1998. This study includes 11137 African American women participants who had a clinical event from enrollment to June 2014. Data analyses were completed from January 2017 to August 2017.Exposures: The variants of APOL1 were genotyped or imputed from whole-exome sequencing.Importance: APOL1 genotypes are associated with kidney diseases in African American individuals and may influence cardiovascular disease and mortality risk, but findings have been inconsistent.Main Outcomes and Measures: Incident coronary heart disease, stroke and heart failure subtypes, and overall and cause-specific mortality were adjudicated from hospital records and death certificates. Estimated incidence rates were determined for each outcome and hazard ratios (HR) and 95% CIs for the associations of APOL1 groups with outcomes.Objective: To discern whether high-risk APOL1 genotypes are associated with cardiovascular disease and stroke in postmenopausal African American women, who are at high risk for these outcomes.Results: The mean (SD) age of participants was 61.7 (7.1) years. Carriers of high-risk APOL1 variants (n = 1370; 12.3%) had higher prevalence of hypertension, use of cholesterol-lowering medications, and reduced estimated glomerular filtration rate (eGFR). After a mean (SD) of 11.0 (3.6) years, carriers of high-risk APOL1 variants had a higher incidence rate of hospitalized heart failure with preserved ejection fraction (HFpEF) than low-risk carriers did but showed no differences for other outcomes. In adjusted models, there was a significant 58% increased hazard of hospitalized HFpEF (HR, 1.58 [95% CI, 1.03-2.41]) among carriers of high-risk APOL1 variants compared with carriers of low-risk APOL1 variants. The association with HFpEF was attenuated (HR = 1.50 [95% CI, 0.98-2.30]) and no longer significant when adjusting for baseline eGFR.All authors: Barac A, Franceschini N, Kopp JB, Li Y, Martin LW, Pollak M, Qian H, Reiner AP, Rosamond WD, Wallace RB, Winkler CAFiscal year: FY2019Digital Object Identifier: Date added to catalog: 2018-07-30
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Journal Article MedStar Authors Catalog Article 29971324 Available 29971324

Conclusions and Relevance: Status as a carrier of a high-risk APOL1 genotype was associated with HFpEF hospitalization among postmenopausal women, which is partly accounted for by baseline kidney function. These findings do not support an association of high-risk APOL1 genotypes with coronary heart disease, stroke, or mortality in postmenopausal African American women.

Design, Setting, and Participants: The Women's Health Initiative is a prospective cohort that enrolled 161838 postmenopausal women into clinical trials and an observational study between 1993 and 1998. This study includes 11137 African American women participants who had a clinical event from enrollment to June 2014. Data analyses were completed from January 2017 to August 2017.

Exposures: The variants of APOL1 were genotyped or imputed from whole-exome sequencing.

Importance: APOL1 genotypes are associated with kidney diseases in African American individuals and may influence cardiovascular disease and mortality risk, but findings have been inconsistent.

Main Outcomes and Measures: Incident coronary heart disease, stroke and heart failure subtypes, and overall and cause-specific mortality were adjudicated from hospital records and death certificates. Estimated incidence rates were determined for each outcome and hazard ratios (HR) and 95% CIs for the associations of APOL1 groups with outcomes.

Objective: To discern whether high-risk APOL1 genotypes are associated with cardiovascular disease and stroke in postmenopausal African American women, who are at high risk for these outcomes.

Results: The mean (SD) age of participants was 61.7 (7.1) years. Carriers of high-risk APOL1 variants (n = 1370; 12.3%) had higher prevalence of hypertension, use of cholesterol-lowering medications, and reduced estimated glomerular filtration rate (eGFR). After a mean (SD) of 11.0 (3.6) years, carriers of high-risk APOL1 variants had a higher incidence rate of hospitalized heart failure with preserved ejection fraction (HFpEF) than low-risk carriers did but showed no differences for other outcomes. In adjusted models, there was a significant 58% increased hazard of hospitalized HFpEF (HR, 1.58 [95% CI, 1.03-2.41]) among carriers of high-risk APOL1 variants compared with carriers of low-risk APOL1 variants. The association with HFpEF was attenuated (HR = 1.50 [95% CI, 0.98-2.30]) and no longer significant when adjusting for baseline eGFR.

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