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Background  The efficacy of ALO-02, an abuse-deterrent formulation containing extended-release oxycodone and sequestered naltrexone, in the treatment of chronic low back pain (CLBP) was studied in a 12-week randomized controlled trial. Primary efficacy endpoint results have been published previously (Rauck et al., 2015). The current paper focuses on patient-reported outcomes for health-related quality of life (HRQL), work productivity, and activity impairment that were assessed during this study.    Methods  This was a double-blind, placebo-controlled, randomized withdrawal study in patients with moderate-to-severe CLBP. After a screening period (≤2 weeks), patients entered an open-label titration period (4–6 weeks). Treatment responders were then randomized to a double-blind placebo-controlled treatment period (12 weeks). HRQL was assessed using changes in the Short Form-36 v2 Health Survey (SF-36v2) and the EuroQol-5 Dimensions Health Questionnaire 3-Level version (EQ-5D-3L). Work productivity and regular activities were evaluated using the Work Productivity and Activity Impairment Questionnaire: Specific Health Problem (WPAI:SHP).    Results  A total of 410 patients received ALO-02 during the open-label titration period, of which 280 (intent-to-treat (ITT) population) were treated during the double-blind placebo-controlled treatment period (placebo, n = 134; ALO-02, n = 146). Significant improvement was observed for all SF-36v2 subscales and component scores ( p  < 0.005) and the EQ-5D-3L summary index and visual analog scale ( p  < 0.0001) during the titration period. Improvement was also significant ( p  < 0.0001) for all WPAI:SHP outcomes except ‘work time missed due to CLBP’ for the titration period. Significant differences favoring ALO-02 compared with placebo were only observed for the SF-36v2 Bodily Pain subscale ( p  ≤ 0.0232; ITT population) during the double-blind treatment period and the overall study period (screening to the end of the double-blind treatment period). The percentage change in activity impairment due to low back pain subscale of the WPAI:SHP significantly favored ALO-02 compared with placebo for the ITT population when considering the overall study period ( p  = 0.0040).    Conclusions  HRQL, work productivity, and activity impairment may be improved with ALO-02 treatment.    Trial registration  ClinicalTrials.gov  NCT01571362 , registered April 3, 2012.

health and quality of life outcomes

Patient-reported health-related quality of life, work productivity, and activity impairment during treatment with ALO-02 (extended-release oxycodone and sequestered naltrexone) for moderate-to-severe chronic low back pain