What genetic health issues should Burmese cat owners and breeders know about?

Burmese cats have a few breed-associated hereditary conditions—most notably hypertrophic cardiomyopathy and a historical craniofacial (head) defect. Responsible screening, informed breeding, and routine vet checks reduce risk.

Overview: Why genetics matter for Burmese cats

Authoritative breed registries and veterinary references list a small number of recognized, breed-associated conditions (see “Sources” below). The good news is many of these can be managed or largely prevented with screening, selective breeding and timely veterinary care.

The main hereditary issues documented in Burmese cats

1) Hypertrophic cardiomyopathy (HCM)

• What it is: HCM is the most common heart disease of cats, characterized by thickening (hypertrophy) of the heart muscle—typically the left ventricle. Thickened walls can reduce cardiac output, cause arrhythmias, congestive heart failure or sudden death.
• Why Burmese owners should care: Burmese cats are among the purebred groups monitored for HCM by registries and cardiology groups. While a single causative mutation like those identified in Maine Coons or Ragdolls has not been universally confirmed for Burmese, breed predisposition has been reported and individual Burmese cats have been diagnosed with HCM in the veterinary literature and in screening programs (see Merck Vet Manual; breed registry guidance).
• Actionable steps:

2) The historical Burmese “head defect” (congenital craniofacial defect)

• What it was: In the mid-to-late 20th century, some Burmese lines produced kittens with severe skull and facial malformations that were typically lethal or resulted in humane euthanasia as neonates. The condition was reported to be inherited, and concerted breeding changes by responsible breeders and registries markedly reduced its frequency.
• Current status: This defect is considered largely controlled in the modern registered breeding population through selective breeding practices and screening. It remains a reminder of why genetic vigilance is important in small gene pools.
• Actionable steps:

3) Other concerns sometimes reported in Burmese lines

• Diabetes mellitus and obesity: Some kennel/registry reports and regional studies have suggested increased diabetes prevalence in certain Burmese populations; however, diabetes in cats is multifactorial (genetics + diet + body condition) and may not be solely breed-determined. Maintaining healthy weight and regular veterinary care reduces risk.
• Dental disease and gingivitis: While common in many breeds and mixed cats, owners should be aware that some Burmese may develop early periodontal disease—regular dental checks and home dental care are important.
• Note on less well-defined conditions: Smaller or older studies have suggested other possible predispositions (e.g., ocular or neurologic syndromes) in some Burmese lines. Many of these are rare, and evidence quality varies. When new genetic tests or robust studies are available, breed organizations and veterinary genetic labs update recommendations.

Genetic testing: What’s available and what it can (and cannot) tell you

• DNA tests exist for some feline inherited conditions—but not all conditions have a single identifiable mutation. For conditions like HCM, many breeds have no single test because multiple genetic and environmental factors contribute.
• What to ask a breeder or laboratory:

• Where to find tests: Reputable veterinary genetic laboratories (for example, university-affiliated labs) list available feline genetic tests. Ask your veterinarian or breeder which lab was used and request verification. The University of California, Davis Veterinary Genetics Laboratory (VGL) and other accredited labs are common resources.

Breeding guidance to reduce hereditary disease

• Screening: Routine echocardiography for breeding cats; cardiac auscultation for every cat; and DNA testing where validated tests exist.
• Avoid close inbreeding and maintain genetic diversity by careful mate selection and, when appropriate, controlled outcrossing.
• Keep accurate health records and share them with buyers and breed clubs. Transparency about health issues in a lineage helps others avoid perpetuating problems.
• Use breed-club resources: Many associations (CFA, TICA and national clubs) publish breeding recommendations and testing protocols.

What owners should watch for and when to see a vet

• Respiratory changes: rapid or labored breathing, open-mouth breathing, or exercise intolerance (could indicate heart or lung disease).
• Lethargy, fainting, sudden collapse or weakness—these can be signs of cardiac arrhythmias or metabolic problems.
• Excessive drinking/urination and weight loss—could indicate diabetes.
• Difficulty nursing, obvious facial deformities at birth, or failure to thrive in kittens—seek immediate veterinary assessment.

Practical care and monitoring recommendations for Burmese owners

• Annual wellness exam with attention to heart auscultation.
• Consider baseline echocardiogram for an adult Burmese, especially if you plan to breed or if a murmur is detected.
• Keep your cat at an ideal body condition: obesity increases risk of diabetes and can worsen cardiac disease.
• Maintain dental care: regular professional cleanings and at-home dental hygiene reduce periodontal disease.
• Ask for medical records when adopting/buying a Burmese kitten: view parents’ cardiac and genetic screening results when possible.
• Consider pet insurance or a savings plan: treatment for chronic conditions (diabetes, heart disease) can be long-term and costly.

Working with breeders: questions to ask and red flags

• What health testing is done on breeding cats (e.g., echocardiography, DNA tests)? Can you see documentation from an accredited lab or cardiologist?
• Do you have references from other owners or veterinary professionals?
• Have you had any congenital defects or unexpected neonatal deaths in recent litters? If yes, what steps were taken?
• What is your socialization and early-life care protocol for kittens?

• A breeder who refuses to share health records.
• Lack of cardiac screening for breeding cats.
• Pressure to purchase without time to review health documentation.

When to consider genetic counseling or specialist referral

• If you are a breeder with recurring neonatal deaths, developmental anomalies or multiple cases of the same disease in a lineage, consult a veterinary geneticist or your national cat club’s health committee.
• If your cat is diagnosed with a hereditary condition, your primary care veterinarian or a board-certified specialist (cardiologist, internal medicine specialist) can advise on management and implications for breeding.

Sources and further reading

• Cat Fanciers’ Association (CFA) — Burmese breed health guidance and breed standard (see CFA resources)
• The International Cat Association (TICA) — Burmese breed information and breed council recommendations
• Merck Veterinary Manual — Hypertrophic cardiomyopathy in cats (clinical overview, diagnosis, management): https://www.merckvetmanual.com/cat-owners/heart-disease-in-cats/hypertrophic-cardiomyopathy-in-cats
• University of California, Davis Veterinary Genetics Laboratory (VGL) — listings of available feline genetic tests and guidance
• Your local breed club or veterinary cardiologist for region-specific screening recommendations

Key takeaways

• Burmese cats have a small number of documented breed-associated hereditary concerns—most notably hypertrophic cardiomyopathy (HCM) and a historical congenital craniofacial (“head”) defect.
• Regular cardiac screening (auscultation, and echocardiography when indicated), weight management and dental care are practical, high-value steps owners can take.
• Responsible breeding—transparent health records, targeted screening, and efforts to maintain genetic diversity—has reduced many historic problems and remains the best long-term strategy.
• If you’re buying a Burmese kitten, ask for documentation of parental health screens and be prepared to work with a veterinarian for baseline and ongoing checks.

Frequently Asked Questions