Alternative titles and symbols : Bilateral striatal necrosis, infantile; Striatal degeneration, familial; IBSN; Infantile bilateral striatal necrosis;
Description : Bilateral striatal necrosis (BSN) encompasses a heterogeneous group of neurologic
disorders with different causation. Familial infantile striatal degeneration is rare
and can be inherited as an autosomal recessive or mitochondrial (see 500003) disorder.
The familial form has an insidious onset and a slowly progressive course; the sporadic
form is associated with acute systemic illness. Many features of BSN overlap with
Leigh syndrome (256000) and certain metabolic disorders, including glutaric acidemia
I (231670) and methylmalonic aciduria (251000). See also Aicardi-Goutieres syndrome
(225750) (Mito et al., 1986; De Meirleir et al., 1995). See also adult-onset autosomal
dominant striatal degeneration (ADSD; 609161), a less severe disorder caused by mutation
in the PDE8B gene (603390) on chromosome 5q13.;
Inheritance : Autosomal recessive;
Molecular basis : Caused by mutation in the 62-kd nucleoporin gene (NUP62, 605815.0001);