Neurodegeneration, Childhood-Onset, with Cerebellar Atrophy, also known as condca, is related to aceruloplasminemia and hypotonia. An important gene associated with Neurodegeneration, Childhood-Onset, with Cerebellar Atrophy is AGTPBP1 (ATP/GTP Binding Carboxypeptidase 1). Affiliated tissues include brain and eye, and related phenotypes are ataxia and hypotonia