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Safety and tolerability of ALO-02 (oxycodone hydrochloride and sequestered naltrexone hydrochloride) extended-release capsules in older patients: a pooled analysis of two clinical trials

Jacquelyn G. Wilson, Almasa Bass, Glenn C. Pixton, Gernot Wolfram, Richard L. Rauck
Published: 17 September 2019
Current Medical Research and Opinion pp 1-9; doi:10.1080/03007995.2019.1661679

Abstract: Objective: To assess the impact of age on the safety and tolerability of ALO-02, an abuse-deterrent opioid formulation consisting of oxycodone hydrochloride and sequestered naltrexone hydrochloride, in patients with chronic pain. Methods: Data from two clinical studies in patients with chronic low back pain or chronic non-cancer pain were analyzed. Patients aged ≥18 years who required continuous around-the-clock opioid analgesia for an extended period were grouped into ≥65 years and <65 years age groups. Treatment-emergent adverse events (TEAEs), use of concomitant medications, clinical laboratory measurements, and occurrences of opioid withdrawal using reported AEs and Clinical Opiate Withdrawal Scale (COWS) scores assessed safety. Data pooling was employed for the titration and maintenance phases of both studies. Results: 805 and 436 patients received ≥1 dose of ALO-02 in the titration and maintenance phases, respectively; 121 (15.0%) and 83 (14.6%) patients were aged ≥65 years in the titration and maintenance phase, respectively. Average doses of ALO-02 were lower in the older patients in both phases. Incidences of TEAEs were comparable between age groups in both phases and generally lower in the maintenance phase. Concomitant medications were taken more often by patients aged ≥65 years. Incidences of potentially clinically significant laboratory results were low in both phases with no clinically important differences between age groups. There were few reports of opioid withdrawal events as assessed by reported AEs and COWS scores. One patient aged ≥65 years experienced an AE of opioid withdrawal. Conclusions: The safety and tolerability of ALO-02 is similar in those aged ≥65 years and those aged <65 years with chronic pain. identifiers: NCT01571362, NCT01428583.
Keywords: safety / chronic pain / Opioid / naltrexone / oxycodone / Extended release / Abuse-deterrent

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