Generation of an induced pluripotent stem cell line from a long QT syndrome type 1 patient carrying the KCNQ1 c.343G > A p.(E115K) variant.

An induced pluripotent stem cell line from a long QT syndrome type 1 patient with the KCNQ1 c.343G > A p.(E115K) variant was successfully generated, maintaining normal cellular characteristics.

• Why it matters: LQT1 caused by KCNQ1 mutations increases the risk of life-threatening arrhythmias, especially during exercise like swimming, highlighting the need for models to understand this condition.
• What they did: Researchers created an iPSC line from a patient who experienced sudden cardiac arrest while swimming, and confirmed it exhibited normal morphology, karyotype, pluripotency, and differentiation capacity.
• The result: This cell line provides a valuable tool for translational research into LQT1, potentially aiding in understanding arrhythmia mechanisms and developing targeted therapies.