Asparagine Synthetase Deficiency, also known as asns deficiency, is related to microcephaly and cerebral atrophy, and has symptoms including seizures, hyperexplexia and feeling jittery. An important gene associated with Asparagine Synthetase Deficiency is ASNS (Asparagine Synthetase (Glutamine-Hydrolyzing)). Affiliated tissues include pons and brain, and related phenotypes are seizure and failure to thrive