Halperin-Birk Syndrome, is also known as neurodevelopmental disorder with spastic quadriplegia, optic atrophy, seizures, and structural brain anomalies. An important gene associated with Halperin-Birk Syndrome is SEC31A (SEC31 Homolog A, COPII Coat Complex Component). Affiliated tissues include brain and eye, and related phenotypes are agenesis of corpus callosum and hyperreflexia