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The information listed within this site is not to be taken for use on other web sites. The owners of these cats have voluntarily chosen to post their test results here; please support the Winterfyre Genetic Testing Results site by respecting all copyrights.

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 09/09/23

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
Page 3 Results -- Updated 07/30/07
Page 4 Results -- Updated 08/31/07
Page 5 Results -- Updated 11/06/07
Page 6 Results -- Updated 04/21/08
Page 7 Results -- Updated 10/05/08
Page 8 Results -- Updated 06/03/09
Page 9 Results -- Updated 10/19/10
Page 10 Results -- Updated 01/07/14
Page 11 Results -- Updated 10/13/23

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
Page 4 Results -- Updated 04/09/21
Page 5 Results -- Updated 10/04/10
Page 6 Results -- Updated 07/16/08
Page 7 Results -- Updated 02/03/20
Page 8 Results -- Updated 12/07/11
Page 9 Results -- Updated 02/03/20
Page 10 Results -- Updated 05/26/09
Page 11 Results -- Updated 08/21/15
Page 12 Results -- Updated 04/09/21
Page 13 Results -- Updated 07/22/14
Page 14 Results -- Updated 01/16/15
Page 15 Results -- Updated 04/21/18
Page 16 Results -- Updated 03/29/18
Page 17 Results -- Updated 09/03/13
Page 18 Results -- Updated 11/20/15
Page 19 Results -- Updated 10/28/15
Page 20 Results -- Updated 05/31/22
Page 21 Results -- Updated 02/04/16
Page 22 Results -- Updated 03/29/18
Page 23 Results -- Updated 10/11/17
Page 24 Results -- Updated 12/08/20
Page 25 Results -- Updated 12/15/21
Page 26 Results -- Updated 12/08/20
Page 27 Results -- Updated 12/08/20
Page 28 Results -- Updated 02/19/24

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 9 Results -- Updated 02/26/24

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 10/13/23

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