--- license: permission_granted topic_id: companion_breed_health_poodle_standard_omia2900_dog category: companion-breed-health title: "Poodle, Standard — Neonatal encephalopathy with seizures, ATF2-related (hereditary; OMIA-verified breed predisposition)" lang: en source: "OMIA (Online Mendelian Inheritance in Animals, University of Sydney) breed-specific hereditary-disorder record, saved verbatim to source_file; C1 substring-verified. Pulled 2026-08-02 from local OMIA database dump." source_file: pdf-raw/breed-health/poodle_standard_omia2900_2900.txt date_parsed: 2026-08-02 tokens_estimated: 548 verification: method: substring_match claims: 10 passed: 10 date: 2026-08-02 recovered: false path: companion-breed-health/companion_breed_health_poodle_standard_omia2900_dog/01_companion_breed_health_poodle_standard_omia2900_dog.md source_document: "OMIA — Online Mendelian Inheritance in Animals (University of Sydney)" citation: authority: "OMIA — Online Mendelian Inheritance in Animals (University of Sydney)" title: "Poodle, Standard — Neonatal encephalopathy with seizures, ATF2-related (hereditary; OMIA-verified breed predisposition)" url: "https://omia.org/OMIA001471/9615/" retrieved: "2026-08-02" ref: "OMIA breed-specific hereditary-disorder records (omia.org), derived from local OMIA database dump; dataset: https://doi.org/10.25910/2AMR-PV70" doc_type: "academic animal-genetics database (breed-specific disorder entries)" needs_review: false
Poodle, Standard — Neonatal encephalopathy with seizures, ATF2-related (hereditary; OMIA-verified breed predisposition)
Source: first-hand OMIA (University of Sydney) breed-specific hereditary-disorder record, saved verbatim to source_file; every claim below is a C1 byte-substring of it.
Claims
Breed: Poodle, Standard (Dog)Disorder:Mode of inheritance: Autosomal recessiveSummary: The disorder is characterized by pups that are small at birth, fail to nurse or thrive, then develop neurological signs and usually die by 7 weeks of age. A genetic test is available.Clin feat: Affected puppies are small at birth and do not develop normally. They initially nurse poorly, but begin nursing sufficiently after several days (Chen et al., 2008). At approximately 3 weeks of age, weakness, ataxia, whole-body tremors, wide-based stance with increased extensor tone, and axial muscle weakness with neck ventroflexion is observed. Affected pups do not interact with the dam or littermates and have slow responses to external stimuli (Chen et al., 2008). At approximately 3 to 6 weeks of age, affected puppies develop generalized clonic-tonic seizures that quickly become refractory to treatment. They become laterally recumbent with extensor rigidity and opisthotonus, and usually die or are euthanized before 7 weeks of age (Chen et al., 2008; Yu et al. 2020).Defect: yesPathology: The cerebellum is smaller than normal and contains dysplastic foci of cells from the granular layer intermixed with those from the Purkinje layer (Chen et al., 2008). Yu et al. (2020): Magnetic resonance imaging showed reduced whole-brain size, dilated ventricles, developmental abnormalities of the white matter of the cerebrum, white matter signal abnormalities in the occipital lobe, and abnormal morphology of the cerebellum. Histopathology included previously unrecognized irregular neuronal migration in the subventricular zone around the lateral ventricles in the frontal lobe and white matter rarefaction especially at the level of the occipital lobe in the cerebrum ..,.Prevalence: Of 1038 standard poodles genotyped, 36% were carriers and 2.7% were affected (Chen et al., 2008).Control: Relatives of affected pups should be tested to identify carriers. Matings of carriers is discouraged, although breeding them to noncarriers will avoid production of affected pups.Gen test: A test is available.
Associated gene(s)
Derived from OMIA database dump (omia.xml, local); structured field, not verbatim prose. First-hand values below are verbatim substrings of the topic's pdf-raw/omia/<phene_id>.txt source file.
- Gene: Entrez Gene ID 26584660 (no symbol in OMIA GeneSynonym) — OMIA Phene_Gene
- OMIA molecular-genetics note: The causative variant is a missense c.152T>G transversion causing a p.M51R methionine to arginine substitution in ATF2 (Chen et al., 2008). The mutation lies in a hydrophobic docking site for protein kinases that activate ATF2. Mutant ATF2 retains partial activity (Chen et al., 2008).
Evidence (references)
Derived from OMIA database dump (omia.xml, local); structured field, not verbatim prose. First-hand values below are verbatim substrings of the topic's pdf-raw/omia/<phene_id>.txt source file.
- 2008. A neonatal encephalopathy with seizures in standard poodle dogs with a missense mutation in the canine ortholog of ATF2. Neurogenetics — PubMed:PMID18074159 | DOI:10.1007/s10048-007-0112-2 — OMIA Phene_Article / Article
- 2020. Magnetic resonance imaging and histopathologic findings from a standard poodle with neonatal encephalopathy with seizures. Front Vet Sci — PubMed:PMID33244473 | DOI:10.3389/fvets.2020.578936 — OMIA Phene_Article / Article
- 2023. An overview of canine inherited neurological disorders with known causal variants. Animals (Basel) — PubMed:PMID38003185 | DOI:10.3390/ani13223568 — OMIA Phene_Article / Article
Comparative medicine (human OMIM)
Derived from OMIA database dump (omia.xml, local); structured field, not verbatim prose. First-hand values below are verbatim substrings of the topic's pdf-raw/omia/<phene_id>.txt source file.
- OMIM:123811 (type: gene) — OMIA Group_OMIM (via OMIA_ID)
verification_derived: method: derived_from_dataset source: "OMIA database dump (omia.xml, local); fields Gene/Variant/Article/OMIM" note: "Structured fields (gene, variant rsID/protein change, PubMed/DOI references, OMIM cross-link) extracted from OMIA dump and presented with first-hand values; not verbatim prose."