CR1 variants contribute to FSGS susceptibility across multiple populations
Focal segmental glomerulosclerosis (FSGS) is a leading cause of nephrotic syndrome, with an annual incidence of 24 cases per million among African-Americans and 5 per million among European-Americans in the United States. It ranks as the second most common glomerular disease in Europe and Latin America and the fifth in Asia. We conducted a case-control study involving 726 FSGS cases and 13,994 controls from diverse ethnic backgrounds, using panel sequencing of ∼2,500 podocyte-expressed genes. Rare variant association tests confirmed known risk genes (<i>KANK1</i>, <i>COLAPOL1</i>) and identified a significant association with the <i>CR1</i> gene. The <i>CR1</i> variant rs17047661, which encodes the Sl1/Sl2 (R1601G) allele, was previously linked to cerebral malaria protection and is now identified as a risk variant for FSGS. This highlights an evolutionary trade-off between infectious disease resistance and kidney disease susceptibility, emphasizing the role of adaptive immunity in FSGS pathogenesis and potential therapeutic targets.
Authors
- Cheryl Ann Winkler (ORCID: https://orcid.org/0000-0001-5552-0917)
- Christine Stevens (ORCID: https://orcid.org/0000-0002-2621-2234)
- Rostislav Skitchenko (ORCID: https://orcid.org/0000-0002-7203-8206)
- Alexey Sergushichev (ORCID: https://orcid.org/0000-0003-1159-7220)
- Jeffrey B. Kopp (ORCID: https://orcid.org/0000-0001-9052-186X)
- Zora Modrušan (ORCID: https://orcid.org/0009-0003-5647-5195)
- Mykyta Artomov (ORCID: https://orcid.org/0000-0001-5282-8764)
- Alexander A. Loboda
- Andréy S. Shaw (ORCID: https://orcid.org/0000-0001-5685-0272)
- Namrata Gupta (ORCID: https://orcid.org/0000-0001-6786-4995)
- Mark J. Daly
Institutions
- Broad Institute (US)
- Nationwide Children's Hospital (US)
- ITMO University (RU)
- Federal Almazov North-West Medical Research Centre (RU)
- Massachusetts General Hospital (US)
- National Institute of Diabetes and Digestive and Kidney Diseases (US)
- Frederick National Laboratory for Cancer Research (US)
- Institute for Molecular Medicine Finland (FI)
- National Cancer Institute (US)
- The Ohio State University (US)
Publication Details
- Journal
- iScience
- Published
- 2025-03-18
- DOI
- https://doi.org/10.1016/j.isci.2025.112234
- Citations
- 1
- Primary Topic
- Immunodeficiency and Autoimmune Disorders
- Type
- article
- Field-Weighted Citation Impact
- 0.80