Diagnostic Tests

Hypertrophic Cardiomyopathy Genetic Testing Gene Analysis Blood


Hypertrophic Cardiomyopathy Genetic Testing Gene Analysis Blood

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What is this test?

Cardiomyopathy can be caused by inherited, genetic factors, or by nongenetic (acquired) causes such as infection or trauma. When the presence or severity of the cardiomyopathy observed in a patient cannot be explained by acquired causes, genetic testing for the inherited forms of cardiomyopathy may be considered. Overall, the cardiomyopathies are some of the most common genetic disorders. The inherited forms of cardiomyopathy include hypertrophic cardiomyopathy (HCM), dilated cardiomyopathy (DCM), arrhythmogenic right ventricular cardiomyopathy (ARVC), and left ventricular noncompaction (LVNC). The hereditary form of HCM is characterized by left ventricular hypertrophy in the absence of other cardiac or systemic causes that may cause hypertrophy of the heart muscle, such as longstanding, uncontrolled hypertension or aortic stenosis. The pathological hallmark of HCM is "myocyte disarray" where there is a loss of parallel alignment of myocytes in the heart wall. HCM is most often caused by genes encoding the cardiac sarcomere, the functional contractile unit of the heart muscle. The clinical presentation of HCM can be variable, even within the same family. HCM can be asymptomatic in some individuals, but can cause life-threatening arrhythmias, which increase the risk of sudden cardiac death. The MYBPC3, MYL2, MYL3, MYH7, ACTC, TPM1, TNNI3, TNNT2, and CAV3 genes are involved in formation and regulation of the cardiac sarcomere, and account for the majority of variants in HCM. Left ventricular hypertrophy can also be caused by metabolic or storage disorders such as Fabry disease (GLA gene), Danon disease (LAMP2 gene), and Wolf-Parkinson-White syndrome associated with variants in the PRKAG2 gene. The TTR gene causes familial transthyretin amyloidosis, which is characterized by buildup of amyloid protein that affects the peripheral and autonomic nervous system. Other nonneuropathic changes may also be involved, including cardiomyopathy.

Also known as Hypertrophic Cardiomyopathy Genetic Testing.

Test Preparation

No special preparation is needed for Hypertrophic Cardiomyopathy Genetic Testing Gene Analysis Blood. Inform your doctor if you are on any medications or have any underlying medical conditions or allergies before undergoing Hypertrophic Cardiomyopathy Genetic Testing Gene Analysis Blood. Your doctor depending on your condition will give specific instructions.

Understanding your test results

GenderAge groupsValue
UNISEXAll age groupsGenes are observed to be mutated in positive cases
UNISEXAll age groupsGenes are observed to be mutated in positive cases
UNISEXAll age groupsGenes are observed to be mutated in positive cases
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