Related Experiment Video
Updated: Jul 9, 2026

Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model
Published on: August 8, 2022
Phenotypic variation in trismus-pseudocamptodactyly syndrome caused by a recurrent MYH8 mutation
Karen Minzer-Conzetti1, Erica Wu, Karin Vargervik
1Department of Pediatrics, Division of Genetics, University of California, San Francisco Center for Craniofacial Anomalies, University of California San Francisco, San Francisco, California, USA.
Abstract:
We report a 20-year-old man with trismus-pseudocamptodactyly (TPS) syndrome who was found to have the same MYH8 mutation, p.R674Q, described in previous families with TPS syndrome and in one family with a Carney complex variant, trismus and pseudocamptodactyly. This patient had facial asymmetry, ptosis and downslanting palpebral fissures and multiple joint involvement, with bilateral hip dysplasia, reduced elbow supination, vertical tali and talipes in addition to the classical findings of trismus and pseudocamptodactyly. These findings broaden the phenotype associated with p.R674Q mutations and support the use of MYH8 testing in patients with a clinical diagnosis of TPS syndrome.
Related Concept Videos
Pleiotropy
Huntington Disease l: Introduction
Pedigree Analysis
Cardiomyopathy III: Hypertrophic Cardiomyopathy
X-linked Traits

