Whole exome sequencing identified a novel compound heterozygous mutation of nephrocystin 4 in a child with nephronophthisis—a rare case report - Report - MDSpire
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Whole exome sequencing identified a novel compound heterozygous mutation of nephrocystin 4 in a child with nephronophthisis—a rare case report
Clinical Report: Identification of a Novel Compound Heterozygous Nephrocystin 4 Mutation
Background
Nephronophthisis (NPHP) is a significant cause of end-stage renal disease (ESRD) in children, characterized by chronic tubulointerstitial nephritis. Genetic mutations, particularly in the NPHP4 gene, play a crucial role in the pathogenesis of this disorder.
Data Highlights
Whole exome sequencing identified two mutations in the NPHP4 gene: c.2611C > T/p.R871X (pathogenic) and c.2768G > A/p.R923H (likely pathogenic). These mutations were inherited from the patient's parents and have not been previously reported in NPHP patients.
Key Findings
NPHP is the most prevalent monogenic cause of ESRD, particularly in pediatric populations.
Whole exome sequencing can effectively identify novel genetic mutations associated with NPHP.
The identified NPHP4 mutations were predicted to be deleterious by bioinformatic analysis.
Genetic testing is essential for the accurate diagnosis of nephronophthisis.
Clinical Implications
Clinicians should consider genetic testing for patients presenting with symptoms of nephronophthisis, especially when the clinical presentation is atypical.
Conclusion
The identification of novel mutations in the NPHP4 gene highlights the need for further research into the genetic underpinnings of this disorder.
