In any case, Δ9-THCA is inferior to CBD as an anticonvulsant, with CBD displaying efficacy in the 6-Hz and MES seizure models, as well as the Scn1a+/− mouse model of Dravet syndrome.17,24,36–38. The gene discussed is SCN1A; the disease is encephalopathy, progressive, early-onset, with brain edema and/or leukoencephalopathy.