Sativex® for Relieving Persistent Pain in Participants With Advanced Cancer

Last updated: March 23, 2018
Sponsor: GW Pharmaceuticals Ltd.
Overall Status: Completed

Phase

3

Condition

Pain

Metastatic Cancer

Neoplasms

Treatment

N/A

Clinical Study ID

NCT01262651
GWCA0958
2009-016064-36
  • Ages > 18
  • All Genders

Study Summary

This 9-week study aimed to determine the efficacy, safety and tolerability of nabiximols (Sativex®) as an adjunctive treatment, compared with placebo in relieving uncontrolled persistent chronic pain in participants with advanced cancer.

Eligible participants were not required to stop any of their current treatments or medications.

Eligibility Criteria

Inclusion

Inclusion Criteria (abbreviated):

  • The participant had advanced cancer for which there was no known curative therapy

  • The participant had a clinical diagnosis of cancer related pain, which was not wholly alleviated with their current optimized opioid treatment

  • The participant received an optimized maintenance dose of Step 3 opioid therapy, preferably with a sustained release preparation, but also allowing a regular maintenance dose of around the clock use of immediate release preparations

  • The participant received a daily maintenance dose Step 3 opioid therapy of less than or equal to a total daily opioid dose of 500 mg/day of morphine equivalence (including maintenance and break-through opioids)

  • The participant was using no more than one type of break-through opioid analgesia

Exclusion Criteria (abbreviated):

  • The participant had any planned clinical interventions that would have affected their pain (for example, chemotherapy or radiation therapy where, in the clinical judgment of the investigator, these would be expected to affect pain)

  • The participant was using or had used cannabis or cannabinoid-based medications within 30 days of study entry and is unwilling to abstain for the duration of the study

  • The participant had experienced myocardial infarction or clinically significant cardiac dysfunction within the last 12 months or had a cardiac disorder that, in the opinion of the investigator, would have put the participant at risk of a clinically significant arrhythmia or myocardial infarction

  • The participant had significantly impaired renal function

  • The participant had significantly impaired hepatic function

  • Female participants of child-bearing potential and male participants whose partner was of child-bearing potential, unless willing to ensure that they or their partner used effective contraception, for example, oral contraception, double barrier, intra-uterine device, during the study and for 3 months thereafter (however, a male condom was not to be used in conjunction with a female condom as this may not have proven effective)

Study Design

Total Participants: 397
Study Start date:
November 25, 2010
Estimated Completion Date:
July 02, 2015

Study Description

This 9-week, multi-center, double-blind, randomized, placebo-controlled study aimed to determine the efficacy, safety and tolerability of nabiximols, administered as an adjunctive treatment for 5 weeks, versus placebo. Eligible participants had advanced cancer, with a clinical diagnosis of cancer related pain which was not wholly alleviated by their current optimized opioid treatment.

Qualifying participants entered the study at screening and commenced a 5 to 14 day eligibility period. During this period, eligible participants had 3 consecutive days where pain severity remained within defined parameters, break-through opioid usage had not exceeded an average of 4 episodes per day, and maintenance opioid medication and dose had not changed. Eligible participants returned for randomization on Day 1 and were randomized to either the nabiximols or placebo treatment arm using a 1:1 allocation ratio. Participants began an initial titration period that lasted up to 14 days. The titration schedule required dosing to a minimum of 3 sprays per day, after which participants were allowed to individualize their dose (3 to 10 sprays per day) until Day 14 when that dose was then fixed for the remainder of the study. Participants returned at Day 22 and Day 36 (end of the randomized treatment period), or earlier if they terminated prematurely from the study. After the end of the 5-week treatment period, participants were offered the option of entering an open-label extension (OLE) study; a safety follow up visit (up to Day 43) was not required if the participant entered the OLE on Day 36. Participants who entered the OLE, up to 7 days after study completion had their follow-up assessments performed on the same day as their first OLE study visit. Participants that did not enter the OLE study had a safety follow up visit 14 days after treatment completion, which could be via telephone.

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