• Eur J Pain · Mar 2019

    Randomized Controlled Trial

    Cancer-related chronic pain: Investigation of the novel analgesic drug candidate cebranopadol in a randomized, double-blind, noninferiority trial.

    • Marie-Henriette Eerdekens, Sofia Kapanadze, Erika Dietlind Koch, Georg Kralidis, Gisela Volkers, Sam Hjelmeland Ahmedzai, and Winfried Meissner.
    • Grünenthal GmbH, Aachen, Germany.
    • Eur J Pain. 2019 Mar 1; 23 (3): 577-588.

    BackgroundCancer-related pain is a growing health problem given the increasing life expectancy of cancer patients. Opioids are commonly used to treat cancer-related pain, but carry the risk of severe side effects, limiting their use. Cebranopadol is a first-in-class drug candidate, combining nociceptin/orphanin FQ peptide and opioid peptide receptor agonism. This trial examined the analgesic efficacy of cebranopadol compared with morphine prolonged release (PR) in patients with moderate-to-severe cancer-related pain.MethodsThis double-blind, parallel-group, multiple-dose trial was designed as noninferiority trial for efficacy of cebranopadol versus morphine PR. Planned with 524 patients, finally 126 patients were treated for up to 7 weeks (low accrual). The primary efficacy endpoint was the average amount of daily rescue medication intake (morphine immediate release) over the last 2 weeks of treatment.ResultsFor the primary endpoint, noninferiority of cebranopadol with and superiority over morphine PR were demonstrated (Full Analysis Set: ∆[95%CI] = -7.48 mg [-12.05, -2.92]; Per Protocol Set: ∆[95%CI] = -4.67 mg [-9.25, -0.10]). The vast majority of patients (≥75%, either treatment) had clinically relevant pain reduction, and noninferiority on this secondary endpoint was not shown. Mostly used doses were ≤800 μg cebranopadol or ≤120 mg morphine PR daily. A total of 83.1% of patients on cebranopadol and 82.0% on morphine PR experienced treatment-emergent adverse events.ConclusionsCebranopadol was effective, safe and well tolerated in the dose range tested (200-1,000 μg) in patients suffering from chronic moderate-to-severe cancer-related pain and was superior to morphine PR on the primary endpoint.SignificanceCebranopadol presents a new approach to treat cancer pain. The drug candidate was easy to titrate, safe and well tolerated, and as effective as morphine PR in patients suffering from chronic moderate-to-severe cancer-related pain.© 2018 European Pain Federation - EFIC®.

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