Aortopathy_Connective Tissue Disorders

Gene: PIEZO2

I don't know

1 individual diagnosed with Marden-Walker syndrome was described with a de novo missense variant in this gene (PMID: 24726473). This is the only literature supporting this gene-disease association. One other proband with MWS did not have a variant in this gene although the authors note that their sequencing strategy would not have been able to detect some indels including single-exon deletions.

The same study reported that another 10 families/individuals with Gordon syndrome (distal arthrogryposis type 3) and 24 with distal atrogryposis type 5 had variants in this gene. The authors posit that these three conditions represent a spectrum of disease.

Marden-Walker syndrome is described as a connective tissue disorder (https://rarediseases.info.nih.gov/diseases/6973/marden-walker-syndrome) and has significant overlap with other multi-system congenital contracture syndromes including D4ST1-Deficient Ehlers-Danlos syndrome (adducted thumb-clubfoot syndrome) (PMID: 27375131). GEL has this gene as Amber in the EDS panel noting some overlap with Kyphoscoliotic EDS in terms of scoliosis.
Sources: Literature

Created: 8 Jul 2020, 1:47 a.m. | Last Modified: 8 Jul 2020, 1:54 a.m.

Panel Version: 0.138

Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal

Phenotypes
Marden-Walker syndrome (MIM#248700); Arthrogryposis, distal, type 3 (MIM#114300); Arthrogryposis, distal, type 5 (MIM#108145)

Publications

• 24726473
• 27375131

Variants in this GENE are reported as part of current diagnostic practice