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Screening of Living Kidney Donors for Genetic Diseases Using a Comprehensive Genetic Testing Strategy
Journal article   Open access   Peer reviewed

Screening of Living Kidney Donors for Genetic Diseases Using a Comprehensive Genetic Testing Strategy

C P Thomas, M A Mansilla, R Sompallae, S O Mason, C J Nishimura, M J Kimble, C A Campbell, A E Kwitek, B W Darbro, Z A Stewart, …
American journal of transplantation, Vol.17(2), pp.401-410
02/2017
DOI: 10.1111/ajt.13970
PMCID: PMC5297870
PMID: 27434427
url
https://doi.org/10.1111/ajt.13970View
Published (Version of record) Open Access

Abstract

Related living kidney donors (LKDs) are at higher risk of end-stage renal disease (ESRD) compared with unrelated LKDs. A genetic panel was developed to screen 115 genes associated with renal diseases. We used this panel to screen six negative controls, four transplant candidates with presumed genetic renal disease and six related LKDs. After removing common variants, pathogenicity was predicted using six algorithms to score genetic variants based on conservation and function. All variants were evaluated in the context of patient phenotype and clinical data. We identified causal variants in three of the four transplant candidates. Two patients with a family history of autosomal dominant polycystic kidney disease segregated variants in PKD1. These findings excluded genetic risk in three of four relatives accepted as potential LKDs. A third patient with an atypical history for Alport syndrome had a splice site mutation in COL4A5. This pathogenic variant was excluded in a sibling accepted as an LKD. In another patient with a strong family history of ESRD, a negative genetic screen combined with negative comparative genomic hybridization in the recipient facilitated counseling of the related donor. This genetic renal disease panel will allow rapid, efficient and cost-effective evaluation of related LKDs.
Glomerulosclerosis, Focal Segmental - genetics Humans Middle Aged Male Kidney Transplantation Living Donors Genetic Markers Genetic Testing - methods Glomerulosclerosis, Focal Segmental - diagnosis Young Adult Mass Screening Polycystic Kidney, Autosomal Dominant - genetics Pedigree Polycystic Kidney, Autosomal Dominant - diagnosis Renal Insufficiency, Chronic - genetics Adult Female Renal Insufficiency, Chronic - diagnosis Mutation High-Throughput Nucleotide Sequencing - methods

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