{"topic_id":"companion_breed_health_american_bulldog_omia4083_dog","category":"companion-breed-health","context":"---\nlicense: permission_granted\ntopic_id: companion_breed_health_american_bulldog_omia4083_dog\ncategory: companion-breed-health\ntitle: \"American Bulldog — Nemaline myopathy, NEB-related (hereditary; OMIA-verified breed predisposition)\"\nlang: en\nsource: \"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.\"\nsource_file: pdf-raw/breed-health/american_bulldog_omia4083_4083.txt\ndate_parsed: 2026-08-02\ntokens_estimated: 225\nverification:\n  method: substring_match\n  claims: 5\n  passed: 5\n  date: 2026-08-02\nrecovered: false\npath: companion-breed-health/companion_breed_health_american_bulldog_omia4083_dog/01_companion_breed_health_american_bulldog_omia4083_dog.md\nsource_document: \"OMIA — Online Mendelian Inheritance in Animals (University of Sydney)\"\ncitation:\n  authority: \"OMIA — Online Mendelian Inheritance in Animals (University of Sydney)\"\n  title: \"American Bulldog — Nemaline myopathy, NEB-related (hereditary; OMIA-verified breed predisposition)\"\n  url: \"https://omia.org/OMIA002137/9615/\"\n  retrieved: \"2026-08-02\"\n  ref: \"OMIA breed-specific hereditary-disorder records (omia.org), derived from local OMIA database dump; dataset: https://doi.org/10.25910/2AMR-PV70\"\n  doc_type: \"academic animal-genetics database (breed-specific disorder entries)\"\n  needs_review: false\n\n\n# American Bulldog — Nemaline myopathy, NEB-related (hereditary; OMIA-verified breed predisposition)\n\nSource: 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.\n\n## Claims\n\n- `Breed: American Bulldog (Dog)`\n- `Disorder: `\n- `Mode of inheritance: Autosomal recessive`\n- `Clin feat: Evans et al. (2016): Affected dogs could independently ambulate, had generalized atrophy, and the myopathy was relatively non-progressive (Supplemental video). Atrophy of the cervical and dorsal thoracic limb muscles was noted with bilateral hypertrophy of the triceps muscles. Serum creatine kinase (CK) activities were mildly elevated. Electromyography (EMG) revealed spontaneous electrical activity, consisting mainly of fibrillation potentials, within the proximal appendicular muscles of the thoracic limbs and the cervical paraspinal musculature. Motor nerve conduction velocity (MNCV) testing showed a mild decrease in the latency of the tibial and ulnar nerves. Respiratory difficulties were not present.`\n- `Defect: yes`\n## Associated gene(s)\nDerived 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.\n- Gene: Entrez Gene ID 388244698 (no symbol in OMIA GeneSynonym) — OMIA Phene_Gene\n- OMIA molecular-genetics note: Evans et al. (2016) reported a likely causal variant, namely \"a nonsense mutation in NEB (g.52734272 C>A, S8042X)  . . .  The pathogenic variant was absent from 120 dogs of 24 other breeds and 100 unrelated ABDs, suggesting that it occurred recently and may be private to the family\".\n\n## Evidence (references)\nDerived 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.\n- 2016. Exome sequencing reveals a nebulin nonsense mutation in a dog model of nemaline myopathy. Mamm Genome — PubMed:PMID27215641 | DOI:10.1007/s00335-016-9644-9 — OMIA Phene_Article / Article\n\n## Comparative medicine (human OMIM)\nDerived 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.\n- OMIM:256030 (type: trait) — OMIA Group_OMIM (via OMIA_ID)\n- OMIM:161650 (type: gene) — OMIA Group_OMIM (via OMIA_ID)\nverification_derived:\n  method: derived_from_dataset\n  source: \"OMIA database dump (omia.xml, local); fields Gene/Variant/Article/OMIM\"\n  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.\"\n","sources":["companion-breed-health — American Bulldog — Nemaline myopathy, NEB-related (hereditary; OMIA-verified breed predisposition)"],"source":{"authority":"companion-breed-health","title":"American Bulldog — Nemaline myopathy, NEB-related (hereditary; OMIA-verified breed predisposition)","url":"https://pubmed.ncbi.nlm.nih.gov/27215641/","retrieved":"","ref":"PMID 27215641","doc_type":"official source","source_document":"","verification_file":""},"source_document":"","source_file":"","trust":{"authority_tier":"ungraded","fidelity":"verbatim","license":null,"display_grade":"pending"},"tokens_estimated":656,"generated_at":null,"tip":"Use /api/v1/topics to discover more topics. /api/v1/nutrient for precise single-point queries. /api/v1/cross_compare for 2-3 standard comparisons."}