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Grey Collie Syndrome (Cyclic Hematopoiesis) AP3 Overview

Grey Collie Syndrome (Cyclic Hematopoiesis) AP3
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Category: Haemolymphatic - Associated with the blood and lymph

Gene: Adaptor related protein complex 3 beta 1 subunit (AP3B1) on Chromosome 3

Variant Detected: Nucleotide Insertion c.2407insA p.Lys802STOP

Severity: Scale 4 has a high degree of severity. It generally causes a decreased quality of life and may also decrease the life expectancy.

Mode of Inheritance: Autosomal Recessive

Test Overview: Cyclic Neutropenia is a disease that affects the neutrophils of a dog, which are an integral part of the dog's immune system. Every 10-12 days, the dog will experience a dramatic drop in the number of neutrophils circulating through his blood stream, leaving him extremely susceptible to infections. The dog will often experience diarrhoea, fever, joint pain or other symptoms associated with eye, respiratory, or skin infections. Bleeding episodes can also occur. Unfortunately, most affected dogs will die as puppies, and even with the best care, the dog will not likely live past 2-3 years of age.

Research Citation(s): Benson, KF. et al. Mutations associated with neutropenia in dogs and humans disrupt intracellular transport of neutrophil elastase (2003) Nat Genet, 35(1);90-96

Associated Breed(s): Mixed Breed,  Collie Rough,  Collie Smooth,