1 ) Episodic Falling in Cavalier King Charles Spaniel (EF)
Cavalier King Charles Spaniel
This test is part of the Official UK Kennel Club DNA Testing Scheme in Cavalier King Charles Spaniel.
Episodic Falling is a genetic neurological disorder found in Cavalier King Charles Spaniels. Episodes are usually triggered by exercise, stress or excitement and are characterised by increased muscle tone and stiffness throughout the thoracic and pelvic limbs resulting in a characteristic 'deer-stalking' position and or collapse. The onset of symptoms is usually between fourteen weeks and four years of age but may appear at any age. Clinical symptoms vary in severity ranging from mild, occasional falling to freezing or seizure-like episodes lasting hours. Severity of the episodes can increase or decrease as the dog gets older. There is no standard pattern to the attacks.
The disease is also known as Exercise-Induced Paroxysmal Hypertonicity, Falling Cavaliers and Collapsing Cavalier Syndrome.
Prof. Dr. Robert Harvey of the London School of Pharmacy has recently identified the underlying genetic defect causing Episodic Falling in Cavalier King Charles Spaniels. LABOKLIN have recently implemented the genetic test for this disease under licence from the London School of Pharmacy. This test is currently patented within Europe, with Laboklin as the testing laboratory.
Trait of Inheritance
Episodic Falling is inherited as a autosomal recessive trait
It is very unlikely that the dog will develop Episodic Falling in Cavalier King Charles Spaniel (EF). The dog will never pass the mutation to its offspring, and therefore it can be bred to any other dog.
The dog carries one copy of the mutant gene and one
copy of the normal gene.
It is very unlikely that the dog will develop Episodic Falling in Cavalier King Charles Spaniel (EF) but since it carries the mutant gene, it can pass it on to its offspring with the probability of 50%.
Carriers should only be bred to clear dogs.
Avoid breeding carrier to carrier because 25% of their offspring is expected to be affected (see table above)