MAVE study maps over 13,000 KCNQ1 variants behind sudden-death risk
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Researchers led by Vanderbilt University Medical Center, publishing in Circulation, used the high-throughput multiplexed assay of variant effect (MAVE) technique to map the functional effects of more than 13,000 variants in KCNQ1, the gene encoding a potassium channel protein. The work distinguishes variants that cause long QT syndrome — a condition that can trigger sudden death — from benign ones. Variant-by-variant functional evidence of this kind addresses a long-standing gap in interpreting KCNQ1 test results, where many variants returned by clinical sequencing have been of uncertain significance. The findings provide a reference resource for cardiologists and genetic counselors classifying KCNQ1 variants, though clinical implementation and extension to other arrhythmia genes remain open questions.
Written by a model from the reports · updated 3 hours ago
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- Medical XpressPickGene variants that can cause sudden death mapped
A study led by Vanderbilt University Medical Center and published in Circulation used the high-throughput multiplexed assay of variant effect (MAVE) technique to characterize more than 13,000 variants in the potassium channel gene KCNQ1, mapping their effects on the encoded protein and distinguishing pathogenic from benign variants in long QT syndrome.
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