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Great Pyrenees — Factor XI deficiency (hereditary; OMIA-verified breed predisposition)

companion_breed_health_great_pyrenees_omia650_dog

companion-breed-health 917 tok en 2026-08-02

Great Pyrenees — Factor XI deficiency (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: Great Pyrenees (Dog)
  • Disorder:
  • Mode of inheritance: Autosomal
  • `Clin feat: Congenital Factor XI deficiency is characterised by abnormal haemostasis and excessive bleeding, usually following trauma or surgery. Clinical signs of abnormal haemostasis and excessive bleeding include bruising, epistaxis, and menorrhagia (Fogh and Fogh, 1988). Affected dogs have significantly decreased Factor XI activity levels (less than 10%), heterozygous/carrier dogs have decreased Factor XI activity levels, (25-50%) but appear to be asymptomatic (Fogh and Fogh, 1988).

Sources

Great Pyrenees — Factor XI deficiency (hereditary; OMIA-verified breed predisposition)
Source document: OMIA — Online Mendelian Inheritance in Animals (University of Sydney)
OMIA — Online Mendelian Inheritance in Animals (University of Sydney)OMIA breed-specific hereditary-disorder records (omia.org), derived from local OMIA database dump; dataset: https://doi.org/10.25910/2AMR-PV70retrieved 2026-08-02

Verification file: pdf-raw/breed-health/great_pyrenees_omia650_650.txt