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Speech apraxia v1.39 SCN8A Zornitza Stark Marked gene: SCN8A as ready
Speech apraxia v1.39 SCN8A Zornitza Stark Gene: scn8a has been classified as Green List (High Evidence).
Speech apraxia v1.39 SCN8A Zornitza Stark Classified gene: SCN8A as Green List (high evidence)
Speech apraxia v1.39 SCN8A Zornitza Stark Gene: scn8a has been classified as Green List (High Evidence).
Speech apraxia v1.31 SCN8A Hali Van Niel gene: SCN8A was added
gene: SCN8A was added to Speech apraxia. Sources: Expert List,Literature
Mode of inheritance for gene: SCN8A was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: SCN8A were set to 41530369; 39931922
Phenotypes for gene: SCN8A were set to Cognitive impairment with or without cerebellar ataxia (MIM#614306)
Review for gene: SCN8A was set to GREEN
Added comment: One reported individual with CAS and de novo missense variant, c.417 G > A; p.(Met139Ile) (Van Niel et al., 2026; PMID: 41530369). Validated diagnostic finding from VCGS clinical NATA pipeline

Mitchel et al. (2025; PMID: 39931922) report two individuals with CAS and SCN8A variants (Supp Table 6).
Sources: Expert List, Literature
Speech apraxia v1.18 Zornitza Stark removed gene:SCN8A from the panel
Speech apraxia v1.6 SCN8A Thomas Scerri Deleted their review
Speech apraxia v1.6 SCN8A Thomas Scerri gene: SCN8A was added
gene: SCN8A was added to Speech apraxia. Sources: Expert list,Expert Review
Mode of inheritance for gene: SCN8A was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Phenotypes for gene: SCN8A were set to Cognitive impairment with or without cerebellar ataxia, MIM# 614306; Developmental and epileptic encephalopathy 13, MIM# 614558; Seizures, benign familial infantile, 5, MIM# 617080
Review for gene: SCN8A was set to RED
Added comment: An in-house (as yet unpublished) CAS proband with a pathogenic variant.
Sources: Expert list, Expert Review