Phenotype: Burmese hypokalemia is characterized by episodes of low serum potassium levels and high creatine phosphate kinase levels. Clinical signs include episodes of skeletal muscle weakness which is most obvious in the neck muscles, but sometimes occurs in just the limbs. As a result affected cats may show problems with walking and holding their head correctly.
Mode of Inheritance: Autosomal recessive
Alleles:N = Normal/Unaffected, BHK = Burmese hypokalemia
Breeds appropriate for testing: Australian Mist, Bombay, Burmese, Burmilla, European Burmese, Cornish Rex, Devon Rex, Singapura, Sphynx, Tiffanie, Tonkinese
Explanation of Results:
- Cats with N/N genoytpe will not have Burmese hypokalemia and cannot transmit this BHK variant to their offspring.
- Cats with N/BHK genotype will not have Burmese hypokalemia, but are carriers. They will transmit this BHK variant to 50% of their offspring. Matings between two carriers are predicted to produce 25% kittens affected by Burmese hypokalemia.
- Cats with BHK/BHK genotype will have Burmese hypokalemia, a condition causing episodic muscle weakness.