Multi-Center, Open-Label, 24-Week Study of OX219 Safety and Efficacy for Maintenance Treatment of Opioid Dependence

A Multi-center, Open-Label, 24-Week, Follow-Up Study to Assess Safety, Efficacy, and Treatment Adherence For Maintenance Treatment of Opioid Dependence With OX219

The purpose of this study was to assess safety, efficacy, and treatment retention following extended treatment with OX219, a higher-bioavailability buprenorphine/naloxone (BNX) sublingual tablet formulation in opioid-dependent patients who completed 1 of 2 primary efficacy and safety studies of OX219.

This was a multicenter, open-label, uncontrolled, single-arm, 24-week, extension study to assess safety, efficacy, and treatment retention during maintenance treatment.

Eligible patients had completed 1 of 2 primary efficacy and safety studies of the higher-bioavailability BNX sublingual tablet formulation (primary study OX219-006 [NCT01908842] or OX219-007 [NCT01848054]). The total duration of study treatment was 24 weeks.

Inclusion criteria

• Signed informed consent form.
• Completion of 1 of 2 primary efficacy safety studies of BNX sublingual tablets (OX219-006 or OX219-007).
• Female patients of child bearing potential who used a reliable method of contraception (hormonal, condom with spermicide, intrauterine device) during the previous OX219-006 or OX219-007 study and continue to use it for the OX219-008 study. Females who are not of child-bearing potential who are either surgically sterile (by hysterectomy, bilateral oophorectomy, bilateral salpingectomy, or tubal ligation), or postmenopausal, as defined by being at least 50 years of age and having had an absence of menses for at least 2 years, were also eligible.

Exclusion criteria

• Females who are pregnant (positive pregnancy test result) or lactating, or planning to become pregnant during the study.
• Participants who are unwilling or unable to comply with the requirements of the protocol (eg, pending incarceration) or are in a situation or condition that, in the opinion of the investigator, may interfere with participation in the study.
• Participants who are participating in any other clinical study in which medication(s) are being delivered or who had used an investigational drug or device within the last 30 days.
• Participants with any known allergy or sensitivity or intolerance to buprenorphine, naloxone, or any related drug, or history of any drug hypersensitivity or intolerance that, in the opinion of the investigator, would compromise the safety of the subject or the study.
• Participant with a contra-indicated serious medical condition.
• Participants who are at suicidal risk as determined by any of the following: a history of suicidal ideation ≤ 3 months prior to baseline with a score of 4 (intent to act) or 5 (specified plan and intent) on the Columbia Suicide Severity Risk Scale (C-SSRS).