Schindler Disease, Type I, also known as alpha-n-acetylgalactosaminidase deficiency type 1, is related to kanzaki disease and neuroaxonal dystrophy, and has symptoms including muscle spasticity, myoclonus and seizures. An important gene associated with Schindler Disease, Type I is NAGA (Alpha-N-Acetylgalactosaminidase), and among its related pathways/superpathways are Apoptosis and Autophagy and p75(NTR)-mediated signaling. Affiliated tissues include eye and spinal cord, and related phenotypes are intellectual disability and seizure