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The Siberian is a spectacular cat with a grand heritage. Like
other breeds, some genetic diseases are present. Fortunately, in
Siberians, genetic disease is
still quite limited at this time. SRI was founded to help understand and
limit these issues.
In 2002 at 3 yrs of age, my first queen, Cholchinay, dropped dead two days
before giving birth. The necropsy showed hypertrophic cardiomyopathy (HCM).
After the grief subsided, I recalled the vet saying HCM was genetic. I began
to ask other breeders what they knew, and whether Siberians had this disease.
Most of us had little knowledge of HCM. Some breeders said that it did not
exist in Siberians, while others felt it was a nutritional deficiency, and
therefore the fault of the owner.
The dilemma: Veterinarians said HCM was hereditary. Other breeds were
beginning to research the disease, yet in Siberians most breeders denied
it existed. I noted with shock that Maine Coon breeders reported 30% HCM
in their lines, and Persians had similar figures for PKD (polycystic kidney disease). Until genetic testing becomes available, reviewing and
understanding pedigrees is the best
tool for preventing a similar crisis in Siberians.
Like other catteries, I tried to quietly research the lines myself.
Only too often breeders are shunned for openly discussing genetic diseases.
Tom Lundberg, another Siberian breeder, visited my cattery and saw my preliminary
HCM pedigree work. We both felt that research might show why HCM was traveling
unchecked in the Siberian.
Together we devoted hundreds of hours reviewing pedigrees, making phone calls,
studying lines and mapping cases. We were amazed at the progress that followed
and compiled information from catteries around the world. At this time,
we have reviewed the pedigrees of 80 HCM positive cats. Dr. Kathryn Meurs of WSU
has recently accepted our work, and will begin genetic testing to search for
Siberian HCM genes.
During our studies, we uncovered cases of Siberian PKD, an inherited kidney
disease and identified four separate points of origin. One single mating
is responsible for the vast majority of PKD in our breeds.
We also began studying claims of hypoallergenic Siberians, and developed methods for a
verifiable laboratory test. Dr. Leslie Lyons was interested
in the low allergy quality of the Siberians, and has included the breed
in her research of the FEL d1 protein. Dr Lyons plans to publish peer-reviewed papers on PKD and FEL d1 in the
foreseeable future.
We would like to see breeders openly share pedigrees
and health data so that all Siberian breeders can all make responsible breeding
choices. We hold the vision that Siberian cat lines will be spared severe
HCM and PKD infiltration and we hope you will join us in this vision.
Siberian Research, Inc was formed as a non-profit research and educational
organization. The mission statement is to disseminate information and to help
breeders understand health issues. Volunteer staff members include Alida Birch
as chair, Tom Lundberg as secretary, and Reid Hart as treasurer.
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