Neurodevelopmental Disorder, Nonprogressive, with Spasticity and Transient Opisthotonus, is also known as nedsto. An important gene associated with Neurodevelopmental Disorder, Nonprogressive, with Spasticity and Transient Opisthotonus is TNR (Tenascin R). Affiliated tissues include brain and eye, and related phenotypes are hyperreflexia and dysarthria