Familial Infantile Bilateral Striatal Necrosis, also known as familial infantile striatonigral degeneration, is related to striatonigral degeneration, infantile and pathologic nystagmus. An important gene associated with Familial Infantile Bilateral Striatal Necrosis is ADAR (Adenosine Deaminase RNA Specific), and among its related pathways/superpathways are Processing of Capped Intron-Containing Pre-mRNA and Cytokine Signaling in Immune system. Affiliated tissues include globus pallidus and caudate nucleus, and related phenotypes are spasticity and hyperreflexia