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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Am+Soc+Nephrol
2015 ; 26
(6
): 1443-8
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Clinical Features and Histology of Apolipoprotein L1-Associated Nephropathy in
the FSGS Clinical Trial
#MMPMID25573908
Kopp JB
; Winkler CA
; Zhao X
; Radeva MK
; Gassman JJ
; D'Agati VD
; Nast CC
; Wei C
; Reiser J
; Guay-Woodford LM
; Pollak MR
; Hildebrandt F
; Moxey-Mims M
; Gipson DS
; Trachtman H
; Friedman AL
; Kaskel FJ
J Am Soc Nephrol
2015[Jun]; 26
(6
): 1443-8
PMID25573908
show ga
Genetic variants in apolipoprotein L1 (APOL1) confer risk for kidney disease. We
sought to better define the phenotype of APOL1-associated nephropathy. The FSGS
Clinical Trial involved 138 children and young adults who were randomized to
cyclosporin or mycophenolate mofetil plus pulse oral dexamethasone with a primary
outcome of proteinuria remission. DNA was available from 94 subjects who were
genotyped for APOL1 renal risk variants, with two risk alleles comprising the
risk genotype. Two APOL1 risk alleles were present in 27 subjects, of whom four
subjects did not self-identify as African American, and 23 of 32 (72%)
self-identified African Americans. Individuals with the APOL1 risk genotype
tended to present at an older age and had significantly lower baseline eGFR, more
segmental glomerulosclerosis and total glomerulosclerosis, and more tubular
atrophy/interstitial fibrosis. There were differences in renal histology,
particularly more collapsing variants in those with the risk genotype (P=0.02),
although this association was confounded by age. APOL1 risk genotype did not
affect response to either treatment regimen. Individuals with the risk genotype
were more likely to progress to ESRD (P<0.01). In conclusion, APOL1 risk
genotypes are common in African-American subjects with primary FSGS and may also
be present in individuals who do not self-identify as African American. APOL1
risk status is associated with lower kidney function, more glomerulosclerosis and
interstitial fibrosis, and greater propensity to progress to ESRD. The APOL1 risk
genotype did not influence proteinuria responses to cyclosporin or mycophenolate
mofetil/dexamethasone.