A Maine Coon HCM gene result describes the variant tested. It does not diagnose the condition of your cat’s heart today or guarantee future health. Take the complete laboratory report to your vet rather than relying on the word “clear”.
What the A31P test detects
The MYBPC3 A31P variant is associated with HCM in Maine Coons. UC Davis offers this specific test; its Ragdoll test concerns a different variant. Check the laboratory report for the exact variant and interpretation.
Reading the result
| Copies detected | What that means |
|---|---|
| None | The tested variant was not detected. This does not exclude HCM from other causes. |
| One | The cat carries one copy and can pass it to offspring. Disease is not inevitable. |
| Two | The cat carries two copies and has a substantially greater associated risk. Discuss cardiac assessment promptly with your vet. |
The UC Davis Veterinary Genetics Laboratory explanation describes incomplete penetrance: genetic results do not produce the same outcome in every cat.
What to do with the report
Ask your vet how the result fits with examination findings, family history and previous heart scans. Keep the original report with the cat’s identification and sampling details. For breeding decisions, seek veterinary and genetics advice about both parents rather than treating one result as a complete health assessment.
Why a heart scan answers a different question
An echocardiogram examines heart structure and function. Genetic testing cannot replace that assessment when indicated. A normal scan also cannot promise lifelong freedom from disease; ask about follow-up. See our echocardiography guide and the ACVIM diagnostic guidelines.
Seek veterinary advice for symptoms regardless of the genetic result. Breathing difficulty or sudden paralysis requires emergency attention.
General information; ask your vet or testing laboratory to interpret your cat’s report.
