[Analysis of a sib-pair with Finnish type congenital nephrotic syndrome due to variant of NPHS1 gene].

OBJECTIVE

To detect genetic variant in a sib-pair with Finnish type congenital nephrotic syndrome (CNF).

METHODS

Clinical data of the sib-pair was reviewed. Coding regions of the NPHS1 gene was analyzed for the sib-pair and both parents.

RESULTS

The sister and brother respectively developed severe proteinuria 1 month and 28 days after birth, in addition with low serum albumin, hypercholesterolemia and severe edema, which were suggestive of CNF. Genetic testing identified that the sib-pair has both carried two heterozygous variants of NPHS1 gene, namely c.2605G>C (p.P869>A) and c.-61G>A, for which their father and mother were heterozygous carriers.

CONCLUSION

The c.2605G>C (p.869P>A) and c.-61G>A variants of the NHPS1 gene probably underlay the CNF in both sibs. The c.2605G>C(p.869P>A) was unreported previously.