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GW Pharmaceuticals Submits Marketing Authorisation Application in Europe for Epidiolex® (cannabidiol) in the treatment of Lennox-Gastaut syndrome and Dravet syndrome

GW Pharmaceuticals plc (GWPH) (“GW” or “the Company”), a biopharmaceutical company focused on discovering, developing and commercializing novel therapeutics from its proprietary cannabinoid product platform, today announced it has submitted its Marketing Authorisation Application (MAA) to the European Medicines Agency (EMA) for Epidiolex® (cannabidiol or CBD) as adjunctive treatment for seizures associated with Lennox-Gastaut syndrome (LGS) and Dravet syndrome, two highly treatment-resistant forms of childhood-onset epilepsy.  GW has received Orphan Designations from the EMA for Epidiolex for the treatment of LGS, Dravet syndrome, and recently, West syndrome and Tuberous Sclerosis Complex. In October 2017, GW completed the submission of its rolling Epidiolex New Drug Application (NDA) to the United States Food and Drug Administration (FDA), also for seizures associated with LGS and Dravet syndrome. This NDA has been accepted by the FDA for Priority Review.

“This MAA submission marks another major milestone for the Epidiolex program and is an important next step toward providing this potential new treatment option globally,” stated Justin Gover, CEO of GW Pharmaceuticals. “GW is committed to making Epidiolex available to patients in Europe that struggle with the burden of living with LGS and Dravet syndrome, both very difficult to treat and devastating conditions. We continue to build a commercial infrastructure in Europe in anticipation of future approval and launch.”

The MAA for Epidiolex is supported by data from three Phase 3 safety and efficacy studies, each of which met their primary endpoint. Epidiolex was generally well tolerated in these trials. The MAA includes safety data on approximately 1,500 patients, with approximately 400 patients on continuous therapy for more than one year. Approximately 26% of the Epidiolex patients from the Phase 3 pivotal program came from European sites. Beyond pivotal safety and efficacy data, the MAA includes a comprehensive clinical pharmacology, pre-clinical and toxicology package.

About Lennox-Gastaut Syndrome

The onset of LGS typically occurs between ages of 3 to 5 years and can be caused by a number of conditions, including brain malformations, severe head injuries, central nervous system infections, and genetic neuro-degenerative or metabolic conditions. In up to 30 percent of patients, no cause can be found. Patients with LGS commonly have multiple seizure types including drop and convulsive seizures, which frequently lead to falls and injuries, and non-convulsive seizures. Resistance to anti-epileptic drugs (AEDs) is common in patients with LGS. Most children with LGS experience some degree of intellectual impairment, as well as developmental delays and aberrant behaviors.

About Dravet Syndrome

Dravet syndrome is a severe infantile-onset and highly treatment-resistant epileptic encephalopathy frequently associated with genetic mutations in the SCN1A sodium channels. Onset of Dravet syndrome occurs typically during the first year of life in previously healthy and developmentally normal infants. Initial seizures are often body temperature related, severe, and long-lasting. Over time, patients with Dravet syndrome often develop multiple types of seizures, including tonic-clonic, myoclonic, and atypical absences and are prone to bouts of prolonged seizures including status epilepticus, which can be life threatening. Risk of premature death including SUDEP (sudden unexpected death in epilepsy) is elevated in patients with Dravet syndrome. Additionally, the majority will develop moderate to severe intellectual and development disabilities and require lifelong supervision and care. There are currently no FDA-approved treatments and nearly all patients continue to experience seizures and other medical needs throughout their lifetime.

About Epidiolex® (cannabidiol)

Epidiolex, GW’s lead cannabinoid product candidate is a pharmaceutical formulation of purified cannabidiol (CBD), which is in development for the treatment of several rare childhood-onset epilepsy disorders. GW has submitted a New Drug Application with the FDA for Epidiolex as adjunctive treatment for seizures associated with LGS and Dravet syndrome with an expected approval and launch in 2018. To date, GW has received Orphan Drug Designation from the FDA for Epidiolex for the treatment of Dravet syndrome, LGS, TSC and IS. Additionally, GW has received Fast Track Designation from the FDA for the treatment of Dravet syndrome and conditional grant of rare pediatric disease designation by the FDA. The Company has also received Orphan Designation from the European Medicines Agency, or EMA, for Epidiolex for the treatment of LGS, Dravet syndrome, West syndrome and TSC. GW is currently evaluating additional clinical development programs in other orphan seizure disorders including Phase 3 trials in Tuberous Sclerosis Complex and Infantile Spasms.


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