A recent study of a DS model using zebrafish demonstrated the use of the channel blocking compound MV1312, which is 5–6 fold selectivity of NaV1.6 over NaV1.1–1.7, reduced burst movement phenotype and the number of epileptiform events, activity similar to that described with the use of a selective NaV1.1 activator AA43279 (Weuring et al., 2020). Here, SCN1A is linked to Dravet syndrome.