Mutations in PIEZO2 cause Gordon syndrome, Marden-Walker syndrome, and distal arthrogryposis type 5.
Document Type
Article
Publication Date
5-1-2014
Abstract
Gordon syndrome (GS), or distal arthrogryposis type 3, is a rare, autosomal-dominant disorder characterized by cleft palate and congenital contractures of the hands and feet. Exome sequencing of five GS-affected families identified mutations in piezo-type mechanosensitive ion channel component 2 (PIEZO2) in each family. Sanger sequencing revealed PIEZO2 mutations in five of seven additional families studied (for a total of 10/12 [83%] individuals), and nine families had an identical c.8057G>A (p.Arg2686His) mutation. The phenotype of GS overlaps with distal arthrogryposis type 5 (DA5) and Marden-Walker syndrome (MWS). Using molecular inversion probes for targeted sequencing to screen PIEZO2, we found mutations in 24/29 (82%) DA5-affected families and one of two MWS-affected families. The presence of cleft palate was significantly associated with c.8057G>A (Fisher's exact test, adjusted p value < 0.0001). Collectively, although GS, DA5, and MWS have traditionally been considered separate disorders, our findings indicate that they are etiologically related and perhaps represent variable expressivity of the same condition.
Publication Title
American journal of human genetics
ISSN
1537-6605
Volume
94
Issue
5
First Page
734
Last Page
744
DOI
10.1016/j.ajhg.2014.03.015
Recommended Citation
McMillin, Margaret J; Anita E Beck; Jessica X Chong; Kathryn M Shively; Kati J Buckingham; Heidi I S Gildersleeve; Mariana I Aracena; Arthur S Aylsworth; Pierre Bitoun; John C Carey; Carol L Clericuzio; Yanick J Crow; Cynthia J Curry; Koenraad Devriendt; David B Everman; Alan Fryer; Kate Gibson; Maria Luisa Giovannucci Uzielli; John M Graham; Judith G Hall; Jacqueline T Hecht; Randall A Heidenreich; Jane A Hurst; Sarosh Irani; Ingrid P C Krapels; Jules G Leroy; David Mowat; Gordon T Plant; Stephen P Robertson; Elizabeth K Schorry; Richard H Scott; Laurie H Seaver; Elliott Sherr; Miranda Splitt; Helen Stewart; Constance Stumpel; Sehime G Temel; David D Weaver; Margo Whiteford; Marc S Williams; Holly K Tabor; Joshua D Smith; Jay Shendure; Deborah A Nickerson; and Michael J Bamshad.
"Mutations in PIEZO2 cause Gordon syndrome, Marden-Walker syndrome, and distal arthrogryposis type 5.."
American journal of human genetics
