Expression-System Biases Compromise the Functional Assessment of KCNH2 Variants and Clinical Risk Assessment
Aline Rio, Malak Alameh, Sylvain Feliciangeli, Rita Semaan, Marja Steenman, Béatrice Olivier, Jérome Montnach, Florian Lesage, Barbara Ribeiro de Oliveira Mendes, Michel De Waard, Gildas Loussouarn
This study shows that common dual-expression systems fail to balance WT and variant hERG expression, leading to inaccurate functional assessments of KCNH2 variants.
bioRxiv · Nov 10, 2026 · PreprintBiophysics