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. 2023 Sep;191(9):2324-2328.
doi: 10.1002/ajmg.a.63314. Epub 2023 Jun 5.

Biallelic variants in NUDCD2 associated with a multiple malformation syndrome with cholestasis and renal failure

Angela E Scheuerle  1   2 , Min Ni  3 , Aaliya A Ahmad  4 , Charles F Timmons  5 , Dinesh Rakheja  5 , Erin E Gordon  6 , Megan Boothe  4
Affiliations

Biallelic variants in NUDCD2 associated with a multiple malformation syndrome with cholestasis and renal failure

Angela E Scheuerle et al. Am J Med Genet A. 2023 Sep.

Abstract

NudC-like protein 2 (NUDCD2) is a 4-exon protein-coding gene at 5q34. The protein appears to act in concert with other genes regulating cell migration and microtubule extension. Early studies in model organisms show associations with LIS1, HERC2, and cohesin subunits via a co-chaperone function with Heat shock protein 90 (Hsp90). It is a candidate gene for human pathology. We present two unrelated patients with biallelic variants in NUDCD2. Their phenotypes comprise similar dysmorphic facies, midline brain hypoplasia, hypothyroidism, pulmonary and aortic valve stenosis, severe dysfunction of the liver and kidneys, profound hypotonia, and early death. The cellular analysis demonstrates the absence of the NUDCD2 protein in fibroblasts of one patient with biallelic loss-of-function variants. The data suggest that NUDCD2 deficiency causes this recognizable syndrome that has features of a ciliopathy with additional complications.

Keywords: NUDCD2; NudCL2; cholestasis; immotile cilia; renal failure; situs inversus.

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References

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