Abstract: De novo variants in KCNQ2 encoding for Kv7.2 voltage-dependent neuronal potassium (K+) channel subunits are associated with developmental epileptic encephalopathy (DEE). We herein describe the clinical and electroencephalographic (EEG) features of a child with early-onset DEE caused by the novel KCNQ2 p.G310S variant. In vitro experiments demonstrated that the mutation induces loss-of-function effects on the currents produced by channels incorporating mutant subunits; these effects were counteracted by the selective Kv7 opener retigabine and by...
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Topics: 
Neuroscience
Psychiatry