1172593006: Early-onset progressive diffuse brain atrophy, microcephaly, muscle weakness, optic atrophy syndrome (disorder)

• SNOMED CT Concept\Clinical finding (finding)\...
• \Head finding (finding)\Finding of brain\Seizure\Seizure disorder\Epilepsy\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Head finding (finding)\Finding of brain\Disorder of brain\Seizure disorder\Epilepsy\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Head finding (finding)\Finding of brain\Disorder of brain\Degenerative brain disorder\Cerebral degeneration (disorder)\Cerebral atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Head finding (finding)\Disorder of head (disorder)\Disorder of brain\Seizure disorder\Epilepsy\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Head finding (finding)\Disorder of head (disorder)\Disorder of brain\Degenerative brain disorder\Cerebral degeneration (disorder)\Cerebral atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Central nervous system finding\Finding of brain\Seizure\Seizure disorder\Epilepsy\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Central nervous system finding\Finding of brain\Disorder of brain\Seizure disorder\Epilepsy\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Central nervous system finding\Finding of brain\Disorder of brain\Degenerative brain disorder\Cerebral degeneration (disorder)\Cerebral atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Central nervous system finding\Second cranial nerve finding\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Central nervous system finding\Disorder of the central nervous system (disorder)\Disorder of brain\Seizure disorder\Epilepsy\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Central nervous system finding\Disorder of the central nervous system (disorder)\Disorder of brain\Degenerative brain disorder\Cerebral degeneration (disorder)\Cerebral atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Central nervous system finding\Disorder of the central nervous system (disorder)\Degenerative disease of the central nervous system\Hereditary degenerative disease of central nervous system\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Central nervous system finding\Disorder of the central nervous system (disorder)\Degenerative disease of the central nervous system\Optic atrophy\Primary optic atrophy\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Central nervous system finding\Disorder of the central nervous system (disorder)\Degenerative disease of the central nervous system\Degenerative brain disorder\Cerebral degeneration (disorder)\Cerebral atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Central nervous system finding\Disorder of the central nervous system (disorder)\Disorder of visual pathways\Disorder of optic nerve\Inherited optic neuropathy (disorder)\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Central nervous system finding\Disorder of the central nervous system (disorder)\Disorder of visual pathways\Disorder of optic nerve\Optic atrophy\Primary optic atrophy\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Eye / vision finding\Visual system disorder\Hereditary disorder of the visual system (disorder)\Inherited optic neuropathy (disorder)\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Eye / vision finding\Visual system disorder\Disorder of visual pathways\Disorder of optic nerve\Inherited optic neuropathy (disorder)\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Eye / vision finding\Visual system disorder\Disorder of visual pathways\Disorder of optic nerve\Optic atrophy\Primary optic atrophy\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Eye / vision finding\Second cranial nerve finding\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Neurological finding\Seizure related finding\Seizure\Seizure disorder\Epilepsy\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Neurological finding\Cranial nerve finding\Second cranial nerve finding\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Genetic disease\Hereditary disease\Hereditary disorder by system (disorder)\Hereditary disorder of the visual system (disorder)\Inherited optic neuropathy (disorder)\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Genetic disease\Hereditary disease\Hereditary disorder by system (disorder)\Hereditary disorder of nervous system (disorder)\Inherited optic neuropathy (disorder)\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Genetic disease\Hereditary disease\Hereditary disorder by system (disorder)\Hereditary disorder of nervous system (disorder)\Hereditary degenerative disease of central nervous system\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Genetic disease\Hereditary disease\Developmental hereditary disorder\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Genetic disease\Hereditary disease\Autosomal hereditary disorder\Autosomal recessive hereditary disorder\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Degenerative disorder\Degenerative disease of the central nervous system\Hereditary degenerative disease of central nervous system\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Degenerative disorder\Degenerative disease of the central nervous system\Optic atrophy\Primary optic atrophy\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Degenerative disorder\Degenerative disease of the central nervous system\Degenerative brain disorder\Cerebral degeneration (disorder)\Cerebral atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Disorder of body system\Hereditary disorder by system (disorder)\Hereditary disorder of the visual system (disorder)\Inherited optic neuropathy (disorder)\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Disorder of body system\Hereditary disorder by system (disorder)\Hereditary disorder of nervous system (disorder)\Inherited optic neuropathy (disorder)\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Disorder of body system\Hereditary disorder by system (disorder)\Hereditary disorder of nervous system (disorder)\Hereditary degenerative disease of central nervous system\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Disorder of body system\Visual system disorder\Hereditary disorder of the visual system (disorder)\Inherited optic neuropathy (disorder)\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Disorder of body system\Visual system disorder\Disorder of visual pathways\Disorder of optic nerve\Inherited optic neuropathy (disorder)\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Disorder of body system\Visual system disorder\Disorder of visual pathways\Disorder of optic nerve\Optic atrophy\Primary optic atrophy\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Disorder of body system\Disease of nervous system (disorder)\Neuropathy\Cranial nerve disorder (disorder)\Disorder of optic nerve\Inherited optic neuropathy (disorder)\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Disorder of body system\Disease of nervous system (disorder)\Neuropathy\Cranial nerve disorder (disorder)\Disorder of optic nerve\Optic atrophy\Primary optic atrophy\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Disorder of body system\Disease of nervous system (disorder)\Hereditary disorder of nervous system (disorder)\Inherited optic neuropathy (disorder)\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Disorder of body system\Disease of nervous system (disorder)\Hereditary disorder of nervous system (disorder)\Hereditary degenerative disease of central nervous system\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Disorder of body system\Disease of nervous system (disorder)\Disorder of the central nervous system (disorder)\Disorder of brain\Seizure disorder\Epilepsy\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Disorder of body system\Disease of nervous system (disorder)\Disorder of the central nervous system (disorder)\Disorder of brain\Degenerative brain disorder\Cerebral degeneration (disorder)\Cerebral atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Disorder of body system\Disease of nervous system (disorder)\Disorder of the central nervous system (disorder)\Degenerative disease of the central nervous system\Hereditary degenerative disease of central nervous system\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Disorder of body system\Disease of nervous system (disorder)\Disorder of the central nervous system (disorder)\Degenerative disease of the central nervous system\Optic atrophy\Primary optic atrophy\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Disorder of body system\Disease of nervous system (disorder)\Disorder of the central nervous system (disorder)\Degenerative disease of the central nervous system\Degenerative brain disorder\Cerebral degeneration (disorder)\Cerebral atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Disorder of body system\Disease of nervous system (disorder)\Disorder of the central nervous system (disorder)\Disorder of visual pathways\Disorder of optic nerve\Inherited optic neuropathy (disorder)\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Disorder of body system\Disease of nervous system (disorder)\Disorder of the central nervous system (disorder)\Disorder of visual pathways\Disorder of optic nerve\Optic atrophy\Primary optic atrophy\Hereditary optic atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Disorder of head (disorder)\Disorder of brain\Seizure disorder\Epilepsy\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Disorder of head (disorder)\Disorder of brain\Degenerative brain disorder\Cerebral degeneration (disorder)\Cerebral atrophy (disorder)\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Developmental disorder (disorder)\Developmental hereditary disorder\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.
• \Disease\Developmental disorder (disorder)\Developmental delay\A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.

Status: current, Not sufficiently defined by necessary conditions definition status (core metadata concept). Date: 30-Sep 2021. Module: SNOMED CT core

Descriptions:

Id	Description	Lang	Type	Status	Case?	Module
4634518013	Early-onset progressive diffuse brain atrophy, microcephaly, muscle weakness, optic atrophy syndrome (disorder)	en	Fully specified name	Active	Entire term case insensitive (core metadata concept)	SNOMED CT core
4634519017	Early-onset progressive diffuse brain atrophy, microcephaly, muscle weakness, optic atrophy syndrome	en	Synonym (core metadata concept)	Active	Entire term case insensitive (core metadata concept)	SNOMED CT core
5399338012	A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.	en	Definition	Active	Entire term case sensitive (core metadata concept)	SNOMED CT core
5399339016	A rare, severe early-onset neurodegenerative encephalopathy characterised mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.	en	Definition	Active	Entire term case sensitive (core metadata concept)	SNOMED CT core
4634518013	Early-onset progressive diffuse brain atrophy, microcephaly, muscle weakness, optic atrophy syndrome (disorder)	en	Fully specified name	Active	Entire term case insensitive (core metadata concept)	SNOMED CT core
4634519017	Early-onset progressive diffuse brain atrophy, microcephaly, muscle weakness, optic atrophy syndrome	en	Synonym (core metadata concept)	Active	Entire term case insensitive (core metadata concept)	SNOMED CT core
4634521010	A rare severe early-onset neurodegenerative encephalopathy with main characteristic developmental delay/regression, epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies. This syndrome is caused by biallelic pathogenic variants in TBCD gene (17q25.3), encoding tubulin folding co-factor D (TBCD), one of five co-chaperones required for microtubule assembly dynamics. The pattern of inheritance is autosomal recessive.	en	Definition	Active	Entire term case sensitive (core metadata concept)	SNOMED CT core
5399338012	A rare, severe early-onset neurodegenerative encephalopathy characterized mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.	en	Definition	Active	Entire term case sensitive (core metadata concept)	SNOMED CT core
5399339016	A rare, severe early-onset neurodegenerative encephalopathy characterised mainly by developmental delay (DD) / developmental regression (DR), epilepsy, cortical atrophy, secondary hypomyelination and thin corpus callosum. Additional features include secondary microcephaly, hypotonia, spasticity, optic atrophy and skeletal anomalies.	en	Definition	Active	Entire term case sensitive (core metadata concept)	SNOMED CT core
3453611001000118	Früh beginnende progressive diffuse Gehirnatrophie-Mikrozephalie-Muskelschwäche-Optikusatrophie-Syndrom	de	Synonym (core metadata concept)	Active	Entire term case sensitive (core metadata concept)	SNOMED CT Switzerland NRC maintained Module
6107521000241110	syndrome d'atrophie cérébrale diffuse à début précoce, microcéphalie, faiblesse musculaire et atrophie optique	fr	Synonym (core metadata concept)	Active	Entire term case insensitive (core metadata concept)	SNOMED CT Switzerland NRC maintained Module
6107521000241110	syndrome d'atrophie cérébrale diffuse à début précoce, microcéphalie, faiblesse musculaire et atrophie optique	fr	Synonym (core metadata concept)	Active	Entire term case insensitive (core metadata concept)	SNOMED CT Switzerland NRC maintained Module
3453611001000118	Früh beginnende progressive diffuse Gehirnatrophie-Mikrozephalie-Muskelschwäche-Optikusatrophie-Syndrom	de	Synonym (core metadata concept)	Active	Entire term case sensitive (core metadata concept)	SNOMED CT Switzerland NRC maintained Module

Expanded Value Set

Reference Sets

Component annotation with string value reference set (foundation metadata concept)

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