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Apolipoprotein L1 gene variants associate with prevalent kidney but not prevalent
cardiovascular disease in the Systolic Blood Pressure Intervention Trial
#MMPMID25029429
Langefeld CD
; Divers J
; Pajewski NM
; Hawfield AT
; Reboussin DM
; Bild DE
; Kaysen GA
; Kimmel PL
; Raj DS
; Ricardo AC
; Wright JT Jr
; Sedor JR
; Rocco MV
; Freedman BI
Kidney Int
2015[Jan]; 87
(1
): 169-75
PMID25029429
show ga
Apolipoprotein L1 gene (APOL1) G1 and G2 coding variants are strongly associated
with chronic kidney disease (CKD) in African Americans (AAs). Here APOL1
association was tested with baseline estimated glomerular filtration rate (eGFR),
urine albumin:creatinine ratio (UACR), and prevalent cardiovascular disease (CVD)
in 2571 AAs from the Systolic Blood Pressure Intervention Trial (SPRINT), a trial
assessing effects of systolic blood pressure reduction on renal and CVD outcomes.
Logistic regression models that adjusted for potentially important confounders
tested for association between APOL1 risk variants and baseline clinical CVD
(myocardial infarction, coronary, or carotid artery revascularization) and CKD
(eGFR under 60?ml/min per 1.73?m(2) and/or UACR over 30?mg/g). AA SPRINT
participants were 45.3% female with a mean (median) age of 64.3 (63) years, mean
arterial pressure 100.7 (100)?mm?Hg, eGFR 76.3 (77.1) ml/min per 1.73?m(2), and
UACR 49.9 (9.2)?mg/g, and 8.2% had clinical CVD. APOL1 (recessive inheritance)
was positively associated with CKD (odds ratio 1.37, 95% confidence interval
1.08-1.73) and log UACR estimated slope (?) 0.33) and negatively associated with
eGFR (? -3.58), all significant. APOL1 risk variants were not significantly
associated with prevalent CVD (1.02, 0.82-1.27). Thus, SPRINT data show that
APOL1 risk variants are associated with mild CKD but not with prevalent CVD in
AAs with a UACR under 1000?mg/g.