Journal
FRONTIERS IN PEDIATRICS
Volume 9, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fped.2021.687455
Keywords
FSGS; CD2AP; mutation; heterozygote; whole-exome sequencing
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Funding
- National Natural Science Foundation of China [82000079, 82000427]
- National Natural Science Foundation of Hunan province [2020JJ5785]
- Fundamental Research Funds for the Central Universities of Central South University [2021zzts0079]
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Idiopathic focal segmental glomerulosclerosis (FSGS) is a kidney disorder with genetic factors playing a dominant role. Mutations in the CD2AP gene can contribute to FSGS development, and whole-exome sequencing (WES) is helpful in identifying these genetic mutations.
Idiopathic focal segmental glomerulosclerosis (FSGS) is a relatively frequent kidney disorder that manifest clinically as proteinuria and progressive loss of renal function. Genetic factors play a dominant role in the occurrence of FSGS. CD2-associated protein (CD2AP) is an adapter molecule and is essential for the slit-diaphragm assembly and function. Mutations in the CD2AP gene can contribute to FSGS development. Here, we describe a Chinese family of four generations with unexplained proteinuria. The proband, a 12-year-old boy, was diagnosed as FSGS. Whole-exome sequencing (WES) revealed an unknown frameshift insertion mutation (p.K579Efs*7) of CD2AP gene that leads to a truncation of CD2AP protein. Bioinformatics strategies predicted that the novel mutation was pathogenic. The mutation was absent in either healthy family members or our 200 healthy controls. In summary, we used WES to explore the genetic lesion of FSGS patients and identified a novel mutation in CD2AP gene. This work broadens the mutation spectrum of CD2AP gene and provides data for genetic counseling to additional FSGS patients.
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