Distal arthrogryposis with variable clinical expression caused by TNNI2 mutation

Hum Genome Var. 2016 Oct 13:3:16035. doi: 10.1038/hgv.2016.35. eCollection 2016.

Abstract

Distal arthrogryposis (DA) is a clinically and genetically heterogeneous disorder with multiple joint contractures. We describe a female DA patient with hand and foot deformities, and right-sided torticollis. Using exome sequencing, we identified a novel TNNI2 mutation (c.485>A, p.Arg162Lys) in the patient and her father. The father has no typical DA but hip dysplasia. This may explain the clinical features of DA2B in this family, but with variable clinical expression.