Aicardi-Goutieres Syndrome 2

**Semantic type:** Disease or Syndrome

**Definition:** An inherited, usually autosomal recessive condition cause by mutation(s) in the RNASEH2B gene, encoding ribonuclease H2 subunit B. Clinical features and onset may vary significantly, but is characterized in its most severe form by cerebral atrophy, leukodystrophy, intracranial calcifications, chronic cerebrospinal fluid (CSF) lymphocytosis, and increased concentrations of CSF alpha-interferon.

**Synonyms:** - AGS2