Cannabidiol for Adjuvant Treatment of Seizures Associated with Lennox-Gastaut Syndrome and Dravet Syndrome: An Evidence Review Group Perspective of a NICE Single Technology Appraisal.

PharmacoEconomics
Ben WijnenManuela Joore

Abstract

GW Research Ltd. provided two separate, but similar, submissions to the National Institute for Health and Care Excellence (NICE) on the clinical and cost-effectiveness of cannabidiol (CBD) 10 mg/kg/day, trade name Epidyolex®, for the adjunctive treatment of seizures associated with Lennox-Gastaut syndrome (LGS) and Dravet syndrome (DS). This paper highlights important methodological issues related to the company submissions, the Evidence Review Group (ERG) reports, and the subsequent development of the NICE guidance by the Appraisal Committee (AC) for the use of CBD. The company identified four randomised controlled trials (RCTs) of CBD (GWPCARE1 and GWPCARE2 for DS, and GWPCARE3 and GWPCARE4 for LGS) and an ongoing open-label extension study (GWPCARE5) as relevant to both submissions. In these RCTs, CBD in addition to current clinical management (CCM) was compared to CCM without CBD (i.e. CCM plus placebo). GWPCARE2 and GWPCARE3 were three-arm studies and compared two dosages of CBD (10 mg/kg/day and 20 mg/kg/day) in addition to CCM and CCM plus placebo. GWPCARE1 and GWPCARE4 compared CBD (20 mg/kg/day) in addition to CCM and CCM plus placebo. Both DS patients in GWPCARE2 and LGS patients in GWPCARE3 who received 10 mg/kg/day ...Continue Reading

References

Jan 22, 2003·Value in Health : the Journal of the International Society for Pharmacoeconomics and Outcomes Research·Milton C WeinsteinUNKNOWN ISPOR Task Force on Good Research Practices--Modeling Studies
Mar 1, 2011·Paediatric Drugs·Patricia K Crumrine
Aug 4, 2011·Epilepsia·Peter R Camfield
Jul 12, 2012·Epilepsia·Jennifer J RilstoneDanielle M Andrade

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