Pyruvate Dehydrogenase Phosphatase Deficiency (Clumber Spaniel Type)

Test Overview:

Pyruvate Dehydrogenase Phosphatase Deficiency is an inherited metabolic disorder. Affected dogs may present as early as 15 weeks of age with an inability to play as long as littermates. Pyruvate is an important metabolic component needed for energy production in muscle. By 1 year of age, affected dogs have clinical signs of exercise intolerance including unwillingness or inability to exercise or play for more than five minutes. Affected dogs may walk slowly, sit to rest often or collapse during exercise or play. After a few minutes of rest dogs may be able to walk and play again but will tire quickly if they continue the activity. Without dietary supplementation affected dogs will die within a few years of age. High numbers of neonatal deaths have been reported in littermates of affected dogs suggesting that many affected dogs die shortly after birth.


Metabolic - Associated with the enzymes and metabolic processes of cells


Pyruvate dehyrogenase phosphatase catalytic subunit 1 (PDP1) on Chromosome 29

Variant Detected:

Base Substitution c.754 C>T p.Gln252STOP


Moderate. This disease can cause significant signs of discomfort and/or dysfunction in affected animals. It may involve relatively high treatment/management costs, and can sometimes reduce life expectancy.

Mode of Inheritance:

Autosomal Recessive

Research Citation(s):

Cameron, JM. et al. Identification of a canine model of pyruvate dehydrogenase phosphatase 1 deficiency (2007) Mol Genet Metab 90(1);15-23.

Associated Breed(s):

Clumber Spaniel , Mixed Breed,