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HCM 1 (Hypertrophic cardiomyopathy ) Mutation Meurs (G-- > C) A31P

Test number: 8080

HCM 1 Mutation Meurs

Breed
Maine Coon .
The Disease

Hypertrophic cardiomyopathy (HCM) is a clinically heterogeneous myocardial disease and is the most common cardiac disease identified in domestic cats.

HCM is characterised by an increased left ventricular mass due to an increase in wall thickness of the heart, with papillary muscle hypertrophy and systolic anterior motion of the Mitral valves.

Subsequently, hypertrophy of the left heart chamber results in cardiac weakness and ultimately in heart failure.

Death by HCM can occur via three mechanisms:

(i) sudden cardiac death with arrhythmia and ventricular fibrillation,

(ii) heart failure with tachycardia, increased respiration, shortness of breath, pulmonary oedema and pleural effusion or

(iii) thrombus formation. Thrombi can form either in the left atrium due to abnormal blood circulation or in the heart chamber itself due to severe hypertrophy and cardiac weakness.

Atrial thrombi can brake free and reach the arterial blood circuit, thereby often causing blood congestion at the branching of pelvic and crural arteries with paralysis of the hind legs. Echocardiographic examination has so far been the only diagnostic tool for this disease. However, it can only identify affected cats with some years of age, when they already present first symptoms of HCM.

Trait of Inheritance

HCM is inherited as a single autosomal dominant condition. Heterozygous animals show all clinical signs of disease and can not live normal lives. They are able to propagate mutations throughout the population. Generally, 50% of a HCM positive cats offspring will inherit HCM. Homozygously affected animals for HCM show more severe clinical symptoms and will pass the defect gene onto all of their offspring.

Recently, a mutation in the MYBPC gene which is suggested to cause HCM in cats was found by Dr. Kathryn Meurs (Washington State University, USA). This mutation was found in most HCM affected cats but not in cats which were tested free by means of echocardiographic techniques. In our laboratory, we were also able to identify this mutation in european cats with HCM.


Inheritance : AUTOSOMAL DOMINANT trait

 

Sire

  Dam   Offspring
         
Clear (N/N)
x
Clear (N/N)
>
100% Clear (N/N)
         
clear (N/N)
x
affected (N/HCM)
>
50%  Clear  (N/N) + 50% affected (N/HCM)
         
clear (N/N)
x
affected  (HCM/HCM)
>
100% affected (N/HCM)
         
affected (N/HCM)
x
Clear (N/N)
>
50%  Clear (N/N) + 50% affected (N/HCM)
         
affected (N/HCM)
x
affected (N/HCM)
>
25% clear (N/N) + 25% affected (HCM/HCM) + 50% affected (N/HCM)
         
affected (N/HCM)
x
affected (HCM/HCM)
>
50% affected (N/HCM)+ 50% affected (HCM/HCM)
         
affected  (HCM/HCM)
x
Clear (N/N)
>
100%  affected (N/HCM)
         
affected  HCM/HCM
x
affected (N/HCM)
>
50% affected (N/HCM)+ 50% affected  (HCM/HCM)
         
affected  (HCM/HCM)
x
affected  (HCM/HCM)
>
100% affected  (HCM/HCM)

 


Clear

Genotype: N / N [ Homozygous normal ]

The cat is noncarrier of the mutant gene.

The cat will never develop HCM 1 (Hypertrophic cardiomyopathy ) Mutation Meurs (G-- > C) A31P and therefore it can be used in breeding.

 

Affected

Affected cats can have one of two genotypes:

Genotype: N / HCM 1 Mutation Meurs [ Heterozygous affected]

Due to the dominant nature of this condition heterozygous cats are likely to develop HCM 1 (Hypertrophic cardiomyopathy ) Mutation Meurs (G-- > C) A31P and show its symptoms.

Genotype: HCM 1 Mutation Meurs / HCM 1 Mutation Meurs [ Homozygous affected ]

Homozygously affected cats are at very high risk of developing HCM 1 (Hypertrophic cardiomyopathy ) Mutation Meurs (G-- > C) A31P and showing its symptoms more severly than heterozygously affected cats.

It is not recommended to use affected cats in breeding

The cat will pass the mutant gene to its offspring
Description

DNA test

By DNA testing the mutation can be shown directly. The testing is carried out by state of the art laboratory methods and therefore provides a very high accuracy. In general DNA tests can be done at any age.

The test can be applied to Maine Coon and Maine Coon related cats, which were cross bred to Maine Coons. With this test we can diagnose the reported mutation, but by no means we can report on the presence/absence of the disease (especially in breeds where the correlation of HCM disease and the cited mutation is not proven). The results that are transmitted contain the information on presence/absence of the G to C mutation in the MYBPC gene exon 3 in the sample of the cat examined. We want to point out that there is still a small possibility of other mutations causing HCM which are not identified so far.

Sample Requirements
Whole blood in EDTA tube (0.5 - 1 ml) or Buccal Swabs.
Whole blood in EDTA tube (0.5 - 1 ml) or Buccal swabs. .
Turnaround
1 - 2 weeks
Price
£ 36.00 (including VAT)

To order:

  • Download Order Form from this link pdf

  • Complete the order form and send it together with your samples to the following address:

    Laboklin (UK),   125 Northenden Road, Manchester, M33 3HF




new test:
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Tractability
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Coat colour Sunshire Dilution



See also:
Norwegian Forest DNA bundle (PK-Def + Amber + GSD4)  
HCM (Hypertrophic Cardiomyopathy HCM3/HCR)  
PKD (Feline Polycystic Kidney Disease)  
PK Deficiency (Pyruvate Kinase Deficiency)  
rdAc-PRA (Progressive Retinal Atrophy )  
Genetic Blood groups in cats  
SMA (Spinal Muscular Atrophy )  
Serological Evaluation of blood Groups  
Hypokalemia / Familial Episodic Hypokalaemic Polymyopathy (BHK)  
Head Defect (BHD)  
Alpha-Mannosidosis (AMD)  
Congenital Myasthenic Syndrome (CMS)  
Gangliosidosis GM1  
Gangliosidosis GM2  
Gangliosidosis GM2  
Mucopolysaccharidosis Type VI (MPS VI MPS6)  
Mucopolysaccharidosis type VII (MPS VII / MPS7)  
Myotonia Congenita (Fainting Goat)  
pd - Progressive Retinal Atrophy (pd-PRA)  
Progressive Retinal Atrophy (rdy-PRA)  
Hypotrichosis and Short Life Expectancy  
Progressive Retinal Atrophy in Bengal (PRA-b / b-PRA)  
Special Offer: HCM, HCR, GSD4, PKD, PRA, PK-Def., SMA, Blood Groups  
Osteochondrodysplasia (Scottish Fold Osteodystrophy)  
Primary Congenital Glaucoma (PCG)  
Autoimmune Lymphoproliferative Syndrome (ALPS)  
Cystinuria (Feline Cystinuria) (CY)  
Persian DNA bundle (PKD + pd-PRA + AMD)  
British Short / Long Hair DNA bundle (PKD + pd-PRA + ALS)  
Burmese DNA bundle (Hypokalemia (BHK) + Head Defect + Gangliosidosis (GM2)  
Birma DNA bundle (PKD + pd-PRA + Hypotrichiose + MPS6)  
Bengal DNA bundle (rdAc-PRA + b-PRA + PK-Def)  
Maine Coon DNA bundle (HCM1 + SMA + PK-Def)  
Ragdoll DNA bundle (HCM1 + HCM3 + PKD + pd-PRA)  
Glycogen Storage Disease ( GSD ) Type IV  

 
 
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125 Northenden Road, Manchester, M33 3HF
Tel. 0161 282 3066