has material basis in germline mutation in OPA1 autosomal recessive disease Behr syndrome https://github.com/monarch-initiative/mondo/issues/5475 https://rarediseases.info.nih.gov/diseases/849/behr-syndrome https://www.malacards.org/card/behr_syndrome MESH:C537669 BEHRS NCIT:C177251 MONDO:0008858 optic atrophy in early childhood, associated with ataxia, spasticity, intellectual disability, and posterior column sensory loss DOID:0111580 Orphanet:1239 SCTID:718221007 optic atrophy, infantile hereditary, Behr complicated form of OMIM:210000 MEDGEN:66358 UMLS:C0221061 GARD:0000849 A disorder characterized by early-onset optic atrophy along with neurological features, including ataxia, spasticity, and intellectual disability. Other signs and symptoms may be present and vary from person to person. This condition is caused by mutations in the OPA1 gene. It is inherited in an autosomal recessive manner. Treatment depends on the specific signs and symptoms seen in the patient. optic atrophy, infantile hereditary, with neurologic abnormalities Behr syndrome optic atrophy in early childhood, associated with ataxia, spasticity, mental retardation, and posterior column sensory loss hereditary neurological disease OPA1-related optic atrophy with or without extraocular features