The Prevalence of Long QT Syndrome according to the genetics website is 1 in 2000 to 1 in 2500 1 in…

➤ How do genetic tests change reported prevalence of LQTS?
Genetic testing increases detected prevalence by revealing asymptomatic carriers. Broad sequencing finds rare variants, some pathogenic and others uncertain. Population databases and stricter interpretation rules reduce overcalling. Reported prevalence therefore depends on test coverage, variant classification criteria, and whether studies count genotype-positive, phenotype-positive, or both.