Congenital anomalies of the kidney and urinary tract (CAKUT) Nonsyndromic

Gene: WNT9B

I don't know

WNT9B plays a key role in the development of the mammalian urogenital system. It is essential for the induction of mesonephric and metanephric tubules, the regulation of renal tubule morphogenesis, and the regulation of renal progenitor cell expansion and differentiation. WNT9B−/− mice have renal agenesis/hypoplasia and reproductive tract abnormalities. Lemire et al. (2021) report 4 individuals from 2 unrelated consanguineous families with bilateral renal agenesis/hypoplasia/dysplasia and homozygous variants in WNT9B. The proband from Family 1 had bilateral renal cystic dysplasia and chronic kidney disease, with 2 deceased siblings with bilateral renal hypoplasia/agenesis. The 3 affected family members were homozygous for a Gly317Arg missense variant in WNT9B. Proband from Family 2 had renal hypoplasia/dysplasia, chronic kidney disease, and was homozygous for a Pro5Alafs*52 nonsense variant in WNT9B. The proband's unaffected brother is also homozygous for the nonsense variant in WNT9B, suggesting nonpenetrance.

Created: 17 Sep 2021, 9:55 a.m. | Last Modified: 17 Sep 2021, 9:55 a.m.

Panel Version: 0.9176

Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal

Phenotypes
Renal agenesis/hypoplasia/dysplasia

Publications

• 34145744

I don't know

WNT9B plays a key role in the development of the mammalian urogenital system. It is essential for the induction of mesonephric and metanephric tubules, the regulation of renal tubule morphogenesis, and the regulation of renal progenitor cell expansion and differentiation. WNT9B−/− mice have renal agenesis/hypoplasia and reproductive tract abnormalities.

Lemire et al. (2021) report 4 individuals from 2 unrelated consanguineous families with bilateral renal agenesis/hypoplasia/dysplasia and homozygous variants in WNT9B. The proband from Family 1 had bilateral renal cystic dysplasia and chronic kidney disease, with 2 deceased siblings with bilateral renal hypoplasia/agenesis. The 3 affected family members were homozygous for a Gly317Arg missense variant in WNT9B. Proband from Family 2 had renal hypoplasia/dysplasia, chronic kidney disease, and was homozygous for a Pro5Alafs*52 nonsense variant in WNT9B. The proband's unaffected brother is also homozygous for the nonsense variant in WNT9B, suggesting nonpenetrance.
Sources: Literature

Created: 17 Sep 2021, 3:43 a.m.

Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal

Phenotypes
Renal agenesis/hypoplasia/dysplasia, no OMIM #

Publications

• PMID: 34145744