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  • Title: Lack of potassium current in W309R mutant KCNQ3 channel causing benign familial neonatal convulsions (BFNC).
    Author: Sugiura Y, Nakatsu F, Hiroyasu K, Ishii A, Hirose S, Okada M, Jibiki I, Ohno H, Kaneko S, Ugawa Y.
    Journal: Epilepsy Res; 2009 Mar; 84(1):82-5. PubMed ID: 19167866.
    Abstract:
    BFNC is an autosomal dominant epileptic disorder caused by mutations of KCNQ2 or KCNQ3 potassium channel gene. W309R missense mutation in KCNQ3 gene was previously reported in a family with BFNC. In this study, potassium currents were recorded from HEK293 cells expressing both W309R mutant KCNQ3 and wild type KCNQ2 channels. We found a lack of potassium current in W309R mutant KCNQ3 and KCNQ2 channels, which can explain the hyper-excitability of CNS in patients with BFNC.
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