Leerink analyst Paul Matteis believes publication of the first Dravet study in the New England Journal of Medicine offers "further validation of the robustness" of the positive phase III trial for GW Pharmaceuticals' Epidiolex. No new safety issues were disclosed and statistical sensitivity analyses corroborated the positive primary efficacy analysis, Matteis tells investors in a research note. Not included in the publication, however, is further color on the clobazam drug-drug interaction, which continues to remain a subject of investor controversy and interest heading into the mid-2017 new drug application filing, Matteis writes. He reiterates an Outperform rating on GW shares.