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Published on: August 8, 2022
Phospholamban gene mutations are not associated with hypertrophic cardiomyopathy in a Northern Greek population
Theodora Kalemi1, Georgios Efthimiadis, Dimitrios Zioutas
1Department of Biology and Genetics, Aristotle University of Thessaloniki, Thessaloniki, Greece.
Insights
Genetic testing for hypertrophic cardiomyopathy (HCM) in Northern Greece found no mutations in the phospholamban (PLN) gene. This suggests PLN gene mutations are not associated with HCM in this specific population.
Area of Science:
- Cardiology
- Genetics
- Molecular Biology
Background:
- Hypertrophic cardiomyopathy (HCM) is a genetic heart condition with varied symptoms.
- Over 250 mutations in 10 genes linked to sarcomeric proteins cause HCM.
- Phospholamban (PLN) is a potential candidate gene for cardiomyopathy due to its role in calcium regulation.
Purpose of the Study:
- To screen for mutations in the phospholamban (PLN) gene in patients with hypertrophic cardiomyopathy (HCM).
- To investigate the association between PLN gene mutations and HCM in a Northern Greece population.
Main Methods:
- Screened 53 consecutive HCM patients from Northern Greece for PLN gene mutations.
- Utilized clinical evaluation, electrocardiography, and echocardiography for patient assessment.
- Analyzed PCR products for mutations using restriction analysis and sequencing.
Main Results:
- No mutations were detected in exons 1 and 2 of the phospholamban gene.
- No mutations were found in the promoter region of the phospholamban gene.
- No polymorphisms were identified in the screened PLN gene segments across all patients.
Conclusions:
- Phospholamban (PLN) gene mutations were not found in this cohort of hypertrophic cardiomyopathy (HCM) patients from Northern Greece.
- The study indicates that PLN gene mutations are not associated with HCM in the investigated Northern Greece population.
- Further research may be needed to explore other genetic factors contributing to HCM in this region.
Abstract:
Hypertrophic cardiomyopathy (HCM) is a genetically transmitted cardiac disease characterized by unexplained myocardial hypertrophy and diverse clinical spectrum. Currently, more than 250 HCM-related mutations in 10 genes encoding contractile sarcomeric proteins have been identified. Phospholamban (PLN) is a modest modulator of intracellular Ca2+ homeostasis and may be a candidate gene responsible for cardiomyopathy. In this study 53 consecutive patients with HCM, coming from Northern Greece, were screened for mutations of PLN gene. The patients were evaluated by clinical history, physical examination, electrocardiogram and echocardiography. All PCR products were analyzed for mutation by both restriction analysis and sequencing. The systematic mutation screening did not reveal any mutation in exons 1 and 2 or in the promoter region of phospholamban gene. Additionally, no polymorphisms were detected in all patients. Therefore, PLN gene mutations were not found to be associated with HCM in a Northern Greece population.
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