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BAER (Brainstem Auditory Evoked Response)
Deafness is a trait that can appear in homozygous white cats of all breeds. It also occurs more rarely in cats with "high white" and/or van patterns. Many theories attempt to explain deafness inheritance, but so far no one theory adequately accounts for all incidences. The brainstem auditory evoked response (BAER) test measures responses in brain waves that are stimulated by a clicking sound to check the central auditory (hearing) pathways of the brainstem. Further BAER resources are available here.
Page 1 Results -- Updated 08/29/12
Page 2 Results -- Updated 02/17/22
CIN (Chronic Interstitial Nephritis)
CIN is a progressive destruction of the kidney's blood filtering system that shrinks the kidneys and turns healthy tissue into scar tissue.
It is argueably the most common cause of feline chronic renal failure (CRF) and is thought to be hereditary. Testing for CIN may be done via an ultrasound scan of the kidneys. Because this
disease can appear at any age, it is recommended that multiple ultrasounds be done to screen for CIN. Further CIN resources are available here.
Page 1 Results -- Updated 12/15/21
Page 2 Results -- Updated 02/10/23
GSD-IV (Glycogen Storage Disease IV)
Glycogen storage disease type IV is an inherited disorder of the Norwegian Forest Cat where an essential enzyme required to produce glucose (energy) is deficient. Afflicted kittens are usually stillborn but may develop normally until 4-5 months of age
before suffering terminal neuromuscular degeneration. The disorder is autosomal recessive; both parents must be carriers of
the trait in order for offspring to be affected.
GSD-IV testing information can be found at PennGen and at Optimal Selection.
For more information on the disease, its suspected origins, and its progression in Europe, please read this very informative article written by Dr. Marc Peterschmitt in 2008.
Page 1 Results -- Updated 03/17/05
Page 2 Results -- Updated 06/17/07
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Page 11 Results -- Updated 09/25/21
HCM (Hypertrophic Cardiomyopathy)
Hypertrophic Cardiomyopathy is a
terminal condition where the heart muscle enlarges and thickens progressively over time. It can be a cause of sudden death,
and symptoms may be mild or nonexistent. The disease is caused by mutations in several genes and passed down to offspring by autosomal dominant inheritance.
Any cat regardless of breed can be afflicted with the disease. Further HCM resources are available here.
Please Note: We are not accepting DNA/genetic test results at this time; there is currently no approved
DNA test for HCM in Norwegian Forest Cats. Only ultrasound results are posted on this site.
Page 1 Results -- Updated 04/09/21
Page 2 Results -- Updated 08/27/12
Page 3 Results -- Updated 07/15/16
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Page 28 Results -- Updated 02/10/23
PKD (Polycystic Kidney Disease)
Polycystic kidney disease is an inherited disease
where cysts are present on the kidney from birth, progressively destroying the organ and causing terminal renal failure. Ultrasound
can detect PKD as early as 10 months of age and is 98% accurate; a DNA test has been developed for cats
stemming from Persian/Exotic lines, but the disease has been seen in other breeds and non-pedigreed cats.
Further PKD resources are available here.
Please Note: We are not accepting DNA/genetic test results at this time; there is currently no approved
DNA test for PKD in Norwegian Forest Cats. Only ultrasound results are posted on this site.
Page 1 Results -- Updated 03/23/05
Page 2 Results -- Updated 05/12/14
Page 3 Results -- Updated 07/17/12
Page 4 Results -- Updated 07/17/12
Page 5 Results -- Updated 09/03/13
Page 6 Results -- Updated 10/28/15
Page 7 Results -- Updated 01/29/18
Page 8 Results -- Updated 12/08/21
Page 8 Results -- Updated 02/10/23
PK Deficiency (Pyruvate Kinase Deficiency)
Pyruvate kinase deficiency is an inherited disease
where an enzyme in the red blood cells is missing, causing these cells to have a shortened lifespan. Ultimately, the red blood cell count is
lowered, causing anemia that is usually mild; however, a rapid, life-threatening anemia can also develop. The disease is autosomal
recessive, meaning each parent needs a copy of the defective gene in order for an offspring to be affected. Only tested cats will be posted on this site. Cats who are normal
based on the results of their parents will not be listed here.
Further PK Def resources are available here.
Page 1 Results -- Updated 10/21/13
Page 2 Results -- Updated 01/16/15
Page 3 Results -- Updated 10/22/21
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