Key result
The Navβ1b/H162P mutated subunit reduced peak current density by 48% (-334 ± 71 vs. -645 ± 151 pA/pF) compared with Navβ1b wild type, supporting its link to Brugada syndrome.
Effect estimate: reduced by 48%
Absolute Event Rate: -334% vs -645%
The H162P mutation in Navβ1b results in reduced sodium channel activity, supporting its link to Brugada syndrome through loss-of-function of the cardiac sodium channel.
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No immediate change to Brugada diagnostics; extends preclinical loss-of-function data but remains hypothesis-generating.
Yuan et al. (2014) studied Brugada syndrome. Navβ1b/H162P mutated subunit vs. Navβ1b wild type was evaluated on Peak current density (reduced by 48%). The Navβ1b/H162P mutated subunit reduced peak current density by 48% (-334 ± 71 vs. -645 ± 151 pA/pF) compared with Navβ1b wild type, supporting its link to Brugada syndrome.
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