In the last decade, major achievements have been made in the understanding of the genetic basis of LQTS, the first inherited arrhythmogenic disease to enter the ''molecular era.'' Thanks to the contribution of several research laboratories pioneered by the seminal work of Mark Keating, it is now clear that the LQTS phenotype is the common pathway of mutations in several different genes.

Genotype-phenotype correlation analysis showed gene-specific distinguishing clinical features and risk of life-threatening cardiac. However, the power of such studies is partially limited by the variable penetrance identified in several families.

Looking to the future and trying to foresee directions of research, one would certainly anticipate that studies should be directed at the identification of factors (genetic or epigenetic) that may modify the penetrance and the clinical manifestations of the disease in patients with the same primary genetic defect. A natural extension to this approach would be the definition on the prevalence of

Getting Started With Dumbbells

Getting Started With Dumbbells

The use of dumbbells gives you a much more comprehensive strengthening effect because the workout engages your stabilizer muscles, in addition to the muscle you may be pin-pointing. Without all of the belts and artificial stabilizers of a machine, you also engage your core muscles, which are your body's natural stabilizers.

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