Cat Gangliosidosis Gm2 In Domestic Shorthair (GM2-DS)

Gangliosidosis GM2 in Domestic Shorthair cats is a rare genetic disorder affecting the nervous system. A DNA test for GM2 gangliosidosis helps identify carriers and affected cats early, enabling responsible breeding decisions. This inherited condition leads to the accumulation of harmful substances in nerve cells, causing neurological symptoms. By using a reliable DNA test, breeders and cat owners can prevent the spread of GM2 in Domestic Shorthair populations. Early detection through genetic screening is crucial for managing the health of your cat. Ensure your Domestic Shorthair is tested for Gangliosidosis GM2 to promote a healthier feline community. Trust certified labs for accurate and fast DNA test results.

Abbreviation : GM2-DS

Analysed mutation : HEXB c.1467_1491inv

Inheritance : Autosomal Recessive

Acronym

GM2-DS

Observed frequency

Rare

Clinical severity

Severe

Clinical classification

Metabolic Diseases

Analysed mutation

HEXB c.1467_1491inv
p.(F489Lfs*4)

Mode of inheritance

Autosomal Recessive

Test summary:

The DNA test for Gangliosidosis GM2 in Domestic Shorthair cats detects a genetic mutation responsible for this rare lysosomal storage disorder. This condition affects the nervous system, leading to progressive neurological decline. Early identification through testing helps breeders avoid producing affected kittens. The test is simple, using a cheek swab or blood sample. Responsible breeding based on DNA results can reduce the incidence of GM2 in the cat population.

Available from the pack : Basic

This DNA test is included starting from our pack Basic — and is also part of the packs Basic, Standard, Advanced, Complete.

View DNA Test Packs →

Choose the pack that best fits your breeding or health strategy of your animals.

Understanding Gangliosidosis GM2 in Domestic Shorthair Cats

Gangliosidosis GM2 is a genetic disorder that affects the nervous system of cats, particularly those in the Domestic Shorthair breed. This condition is caused by a deficiency of the enzyme hexosaminidase A, which is crucial for breaking down certain lipids in the body. As a result, toxic substances accumulate in the brain and nerve tissues, leading to progressive neurological impairment.

Clinical Signs and Symptoms

Kittens affected by Gangliosidosis GM2 may appear normal at birth, but signs typically begin to emerge within the first few months of life. Common clinical signs include decreased activity levels, difficulty walking, abnormal eye movements, and seizures. As the disease progresses, affected cats may exhibit severe neurological deficits, including loss of coordination and muscle strength, leading to an inability to perform normal daily activities.

Pathophysiology of Gangliosidosis GM2

The underlying pathophysiology of Gangliosidosis GM2 involves the accumulation of GM2 gangliosides due to the lack of hexosaminidase A enzyme activity. These gangliosides are complex lipids found in cell membranes, particularly in the brain. The buildup of these substances disrupts normal cellular function and leads to cell death, primarily in the neurons, ultimately resulting in the neurological signs observed in affected cats.

Diagnosis of Gangliosidosis GM2

Diagnosis of Gangliosidosis GM2 typically involves a combination of clinical examination and genetic testing. A veterinarian may suspect the condition based on clinical signs and a thorough neurological examination. Confirmation is achieved through DNA testing, which identifies mutations associated with the disorder. It's important for breeders and pet owners to be aware of this condition to make informed decisions regarding breeding and health management.

Management and Prognosis

Currently, there is no cure for Gangliosidosis GM2, and management focuses on providing supportive care to improve the quality of life for affected cats. This may include physical therapy, dietary management, and medication to control seizures or other symptoms. Unfortunately, the prognosis for affected cats is generally poor, with many succumbing to the disease within the first few years of life.

Conclusion

Gangliosidosis GM2 is a severe genetic disorder in Domestic Shorthair cats that leads to debilitating neurological symptoms due to enzyme deficiency. Early diagnosis through genetic testing is crucial for managing the condition and making informed breeding decisions. As research continues, there is hope for improved understanding and potential future treatments for this challenging condition.

Breed recognized for the test : Gangliosidosis Gm2 In Domestic Shorthair (GM2-DS)

Domestic Shorthair

Interpretation of genotypes Genotype Status Learn more about the interpretation of genotypes FAQ: understanding the interpretation of result What does “Clear” mean? The animal does not carry the mutation. It will not develop the disease and will not pass it on. Is a “Carrier” serious? No. The animal is generally healthy but can transmit the mutation to its offspring. What if an animal is “Affected”? It carries two mutated copies. Clinical signs are expected depending on the disease. It should not be bred. Why are there differences between male / female? Some diseases are sex-linked, so their expression varies depending on the animal’s sex. The animal has two normal copies of the gene. No risk of developing or transmitting the disease. Heterozygous carrier: one mutated copy. The animal is usually not clinically affected but can pass the mutation to offspring. Male carrier or affected depending on the inheritance mode. Males have only one X or Y chromosome. Heterozygous female carrier: one mutated copy. She can pass the mutation on and may sometimes show mild clinical signs depending on the condition. Two mutated copies of the gene. The animal is at risk of developing the associated condition.

🧬 Interpretation of genotypes GM2-DS

Genotype

Status

🟡 N/N

Non-carrier - No Risk

🟡 N/GM2-DS

Carrier - No Risk

❌ GM2-DS/GM2-DS

Affected - At Risk

FAQ: understanding the interpretation

What does “Clear” mean?

The animal does not carry the mutation. It will not develop the disease and will not pass it on.

Is a “Carrier” serious?

No. The animal is generally healthy but can transmit the mutation to its offspring.

What if an animal is “Affected”?

It carries two mutated copies. Clinical signs are expected depending on the disease. It should not be bred.

Why are there differences between male / female?

Some diseases are sex-linked, so their expression varies depending on the animal’s sex.

Genotype Forecast for Offspring Mother Father Non-carrier Carrier Affected Favorable cross: majority Carrier risk is predominant. Majority affected Filter by mother's genotype Filter by father's genotype All Predict Offspring The animal has two normal copies of the gene. No risk of developing or transmitting the disease. Heterozygous carrier: one mutated copy. The animal is usually not clinically affected but can pass the mutation to offspring. Male carrier or affected depending on the inheritance mode. Males have only one X or Y chromosome. Heterozygous female carrier: one mutated copy. She can pass the mutation on and may sometimes show mild clinical signs depending on the condition. Two mutated copies of the gene. The animal is at risk of developing the associated condition.

Predict Offspring

Filter by mother's genotype Filter by father's genotype

N/N (Non-carrier)

N/GM2-DS (Carrier)

GM2-DS/GM2-DS (Affected)

DNA Test FAQ

What does this DNA test detect?

This DNA test detects the mutation associated with Gangliosidosis Gm2 In Domestic Shorthair (GM2-DS) in order to identify clear, carrier, or at-risk animals.

Why test a breeding animal?

DNA testing helps breeders plan safer matings and reduce the risk of transmitting the mutation to offspring.

What is the inheritance mode of this test?

The inheritance mode reported for this test is Autosomal Recessive.

Which mutation is analysed in this test?

This test analyses the mutation HEXB c.1467_1491inv.

Is a carrier animal necessarily affected?

Not necessarily. Interpretation depends on the inheritance pattern and the resulting genotype.

References

Martin Douglas R, Krum Barbara K, Varadarajan G S, Hathcock Terri L, Smith Bruce F, Baker Henry J. An inversion of 25 base pairs causes feline GM2 gangliosidosis variant. Exp Neurol. 2004 May;187(1):30-7. doi: 10.1016/j.expneurol.2004.01.008.

My DNA Portal