Abstract
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Three Novel Heterozygous Mutations of NPHS1 Gene Causing Infants with Congenital Nephrotic Syndrome: Two Chinese (Han) Cases
by Hongyan Lv, Fang Liu, Qiuli Wang, Zhiyong Dong, Pengshun Ren, Huiming Zhang, Xiaohui Yan, Lianxiang Li
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Background: Congenital nephrotic syndrome (CNS) of the Finnish type (CNF) is an autosomal recessively disorder. NPHS1 gene mutation is the main gene responsible for CNF. This study aimed to explore the clinical manifestations and the characteristics of genetic variation in Chinese patients with CNS.
Methods: A 15-minute-old boy and a 34-day-old girl with CNS were included. NPHS1 gene was detected by next-generation high-throughput sequencing.
Results: Patient 1 carried two novel heterozygous mutations of NPHS1 gene, one was c.204delG, p. (Leu69fs) in exon 2 of NPHS1 gene, a heterozygote frameshift mutation; the other was c.3558delT, p. (Gly1187fs) in exon 28, a heterozygote frameshift mutation. Patient 2 carried three heterozygous mutations of NPHS1, among them, c.1561-G>A. p.Asp521Asn in exon 12 is a heterozygous missense mutation. It was identified as possible de novo pathogenicity gene.
Conclusions: Three novel heterozygous mutations of NPHS1 gene were responsible for the patients with CNS and can enlarge the spectrum of NPHS1 gene mutation.
DOI: 10.7754/Clin.Lab.2023.230121
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