1. APOL1 genotype-associated morphologic changes among patients with focal segmental glomerulosclerosis
- Author
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John F. O’Toole, Katherine R. Tuttle, Kevin V. Lemley, Matthew G. Sampson, Marie C. Hogan, Jarcy Zee, Michelle T McNulty, Sharon G. Adler, Vimal K. Derebail, Chia-shi Wang, Raed Bou Matar, Elizabeth J. Brown, Katherine MacRae Dell, Fernando C. Fervenza, Keisha L. Gibson, Gerald B. Appel, Cynthia C. Nast, Ambarish M. Athavale, Pamela Singer, Jonathan Ashley Jefferson, Richard A. Lafayette, Jeffrey B. Kopp, Larry A. Greenbaum, Kevin E.C. Meyers, Laura Barisoni, Alessia Fornoni, Jiten Patel, Kamalanathan K. Sambandam, Crystal A. Gadegbeku, Meredith A. Atkinson, Serena M. Bagnasco, Matthias Kretzler, Jonathan J. Hogan, Heather N. Reich, Suzanne Vento, Howard Trachtman, Jen Jar Lin, Jeffrey B. Hodgin, Lawrence B. Holzman, Tarak Srivastava, Sangeeta Hingorani, Frederick J. Kaskel, Michelle Hladunewich, Olga Zhdanova, Christine B. Sethna, Dhruti P. Chen, Debbie S. Gipson, and John C. Lieske
- Subjects
Pathology ,medicine.medical_specialty ,Nephrotic Syndrome ,Genotype ,Apolipoprotein L1 ,Population ,030232 urology & nephrology ,030204 cardiovascular system & hematology ,urologic and male genital diseases ,Article ,03 medical and health sciences ,0302 clinical medicine ,Focal segmental glomerulosclerosis ,Biopsy ,medicine ,Humans ,Minimal change disease ,Allele ,education ,Alleles ,education.field_of_study ,medicine.diagnostic_test ,biology ,Glomerulosclerosis, Focal Segmental ,urogenital system ,business.industry ,medicine.disease ,female genital diseases and pregnancy complications ,Nephrology ,Pediatrics, Perinatology and Child Health ,biology.protein ,business ,Nephrotic syndrome - Abstract
Background: The G1 and G2 alleles of apolipoprotein L1 (APOL1) are common in the Black population and associated with increased risk of focal segmental glomerulosclerosis (FSGS). The molecular mechanisms linking APOL1 risk variants with FSGS are not clearly understood, and APOL1’s natural absence in laboratory animals makes studying its pathobiology challenging. Methods: In a cohort of 90 Black patients with either FSGS or minimal change disease (MCD) enrolled in the Nephrotic Syndrome Study Network (58% pediatric onset), we used kidney biopsy traits as an intermediate outcome to help illuminate tissue-based consequences of APOL1 risk variants and expression. We tested associations between APOL1 risk alleles or glomerular APOL1 mRNA expression and 83 light- or electron-microscopy traits measuring structural and cellular kidney changes. Results: Under both recessive and dominant models in the FSGS patient subgroup (61%), APOL1 risk variants were significantly correlated (defined as FDR
- Published
- 2021
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