Ataxia, Intention Tremor, and Hypotonia Syndrome, Childhood-Onset, is also known as atiths. An important gene associated with Ataxia, Intention Tremor, and Hypotonia Syndrome, Childhood-Onset is POU4F1 (POU Class 4 Homeobox 1). Affiliated tissues include brain and eye, and related phenotypes are ataxia and hypotonia