A Double Blind, Randomized, Placebo-controlled, Parallel Group Study of Sativex Oromucosal Spray (Sativex®; Nabiximols) as Adjunctive Therapy in Relieving Uncontrolled Persistent Chronic Pain in Patients With Advanced Cancer, Who Experience Inadequate Analgesia During Optimized Chronic Opioid Therapy
试验速览
- 阶段
- 3 期
- 状态
- 已完成
- 入组人数
- 397
- 主要终点
- Percent Improvement From Baseline In Mean NRS Average Pain At End Of Treatment
研究概览
简要总结
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.
详细描述
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.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Triple (Participant, Care Provider, Investigator)
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- 未提供
排除标准
- 未提供
研究组 & 干预措施
Nabiximols
Nabiximols was self-administered by participants as a 100 microliter (μL) oromucosal spray in the morning and evening, up to a maximum of 10 sprays per day for 5 weeks. Nabiximols oromucosal spray contained delta-9-tetrahydrocannabinol (THC) (27 milligram [mg]/milliliter [mL]):cannabidiol (CBD) (25 mg/mL), in ethanol:propylene glycol (50:50) excipients, with peppermint oil (0.05%) flavoring. Each 100 μL actuation delivered 2.7 mg THC and 2.5 mg CBD.
干预措施: Nabiximols (Drug)
Placebo (GA-0034)
Placebo Comparator: Placebo (GA-0034) Placebo was self-administered by participants as a 100 μL oromucosal spray in the morning and evening, up to a maximum of 10 sprays per day for 5 weeks. Placebo oromucosal spray contained ethanol: propylene glycol (50:50)
干预措施: Placebo (GA-0034) (Drug)
结局指标
主要结局
Percent Improvement From Baseline In Mean NRS Average Pain At End Of Treatment
时间窗: Baseline, End of Treatment (Day 36)
Participants indicated level of pain in the last 24 hours on an 11-point Numerical Rating Scale (NRS), where a score of 0 was "no pain" and 10 was "pain as bad as you can imagine". Baseline = mean score from first day of 3-day eligibility period through to the day before first dose of study drug. End of Treatment = mean score over last (up to) 7 days to the final pain score at End of Treatment or up until Day 35, whichever is earlier, or final score available (prematurely terminated). Percentage improvement from baseline (Imp%) was calculated as: Imp% = (Baseline pain NRS mean - End of Treatment pain NRS mean)/Baseline pain NRS mean \* 100. For participants who died or withdrew due to disease progression, Imp% values were used. For participants who died or withdrew unrelated to disease progression before end of Week 5 (no diary data from Day 33 onwards), Imp% was zero for participants whose Imp% value was positive and it was Imp% for participants whose Imp% value was not positive.
次要结局
- Change From Baseline In Mean Sleep Disruption NRS At End Of Treatment(Baseline, End of Treatment (Day 36))
- Change From Baseline In Mean NRS Worst Pain At End Of Treatment(Baseline, End of Treatment (Day 36))
- Subject Global Impression Of Change At Last Visit (Up To Day 36)(Last Visit (up to Day 36))
- Physician Global Impression Of Change At Last Visit (Up To Day 36)(Last Visit (up to Day 36))
- Change From Baseline In Daily Total Opioid Use (Morphine Equivalent) At End Of Treatment(Baseline, End of Treatment (Day 36))
- Change From Baseline In Daily Break-through Opioid Dose (Morphine Equivalent) At End Of Treatment(Baseline, End of Treatment (Day 36))
- Change From Baseline In NRS Constipation At Last Visit (Up To Day 36)(Baseline, Last Visit (up to Day 36))
- Change From Baseline In Mean NRS Average Pain At End Of Treatment(Baseline, End Of Treatment (Day 36))
- Patient Satisfaction Questionnaire At Last Visit (Up To Day 36)(Last Visit (up to Day 36))
- Change From Baseline In Daily Maintenance Opioid Dose (Morphine Equivalent) At End of Treatment(Baseline, End of Treatment (Day 36))