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Domestic Medium Hair — Multidrug resistance 1, ABCB1-related (hereditary; OMIA-verified breed predisposition)

companion_breed_health_domestic_medium_hair_omia3786_cat

companion-breed-health 1486 tok en 2026-08-02

Domestic Medium Hair — Multidrug resistance 1, ABCB1-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: Domestic Medium Hair (Cat)
  • Disorder:
  • Mode of inheritance: A recessive mode of inheritance has been considered. In other species an incomplete dominant mode of inheritance is discussed.
  • `Clin feat: Multidrug resistance 1 results in higher risk of adverse drug reactions to P-glycoprotein substrate drugs such as ivermectin and macrocyclic lactones due to impaired P-glycoprotein synthesis. These drugs are commonly found in flea and tick preventatives for cats and dogs (Mealey et al., 2023). Clinical effects can be neurological such as CNS depression, ataxia, seizure activity, tremors, hypersalivation, vomiting, mydriasis, dyspnoea, and in severe cases, coma, blindness and death. It can also manifest in bone marrow suppression in the form of neutropenia and thrombocytopenia. Gatstrointestinal toxicity has also been reported (Mealey et al., 2021).

Sources

Domestic Medium Hair — Multidrug resistance 1, ABCB1-related (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/domestic_medium_hair_omia3786_3786.txt