Ruhr-Universitaet-Bochum May 8 2026 Short QT syndrome is a genetic disease that leads to sudden cardiac death at a young age. Mutations in the SLC4A3 gene, which regulates bicarbonate-chloride exchange, were recently described as a potential cause. An international research team, including a group from Ruhr University Bochum, Germany, investigated this possibility. The researchers discovered how different variants of the gene affect heart muscle cells: Specifically, the pH level increased, and