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Extension to Safety and Efficacy of Probuphine in the Treatment of Opioid Dependence (PRO-807)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00630201
Recruitment Status : Completed
First Posted : March 6, 2008
Last Update Posted : December 31, 2018
Information provided by (Responsible Party):
Titan Pharmaceuticals

Brief Summary:
Buprenorphine (BPN) is an approved treatment for opioid dependence; however, in taking oral tablets, patients experience withdrawal and cravings when the variable BPN levels in the blood are low. Probuphine (buprenorphine implant) is an implant placed just beneath the skin that contains BPN. It is designed to provide 6 months of stable BPN blood levels. This study will test the safety and efficacy of Probuphine in the treatment of patient with opioid dependence. Patients who have completed 24 weeks of treatment in the Randomized, Double-Blind, Placebo-Controlled, Multi-Center Study of Probuphine in Patients with Opioid Dependence, will be re-treated with Probuphine over an additional 24 weeks.

Condition or disease Intervention/treatment Phase
Opioid Dependence Drug: Probuphine (buprenorphine implant) Phase 3

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 62 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: An Open-Label, Multi-Center Extension Study Of Probuphine in Patients With Opioid Dependence
Study Start Date : October 2007
Actual Primary Completion Date : February 2009
Actual Study Completion Date : February 2009

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: Probuphine
buprenorphine implant
Drug: Probuphine (buprenorphine implant)
Implantable formulation of buprenorphine made of buprenorphine HCl/ethylene vinyl acetate, considered a drug. (4 implants, 6-month duration).

Primary Outcome Measures :
  1. Number of subjects with adverse events as a measure of safety [ Time Frame: approx. 26 weeks ]
    Adverse events that occurred after the signing of the informed consent until 14 days after study drug treatment has been discontinued, or AEs designated as possibly-related to study drug and all Serious AEs until resolution or stabilization, were followed.

Secondary Outcome Measures :
  1. Buprenorphine concentration in plasma [ Time Frame: 24 weeks ]
  2. Percent of urine samples that are negative for illicit opioids [ Time Frame: 24 weeks ]
  3. Percent of subjects retained as a measure of efficacy [ Time Frame: 24 weeks ]
  4. Percent of subjects reporting illicit drug use as a measure of efficacy [ Time Frame: 24 weeks ]
  5. Average daily dose of supplemental sublingual buprenorphine as a measure of efficacy [ Time Frame: 24 weeks ]
  6. Mean total score on SOWS as a measure of efficacy [ Time Frame: 24 weeks ]
  7. Mean total score on COWS as a measure of efficacy [ Time Frame: 24 weeks ]
  8. Mean subjective opioid cravings scores as a measure of efficacy [ Time Frame: 24 weeks ]
  9. Mean composite score Drug Problems area of Addiction Severity Index [ Time Frame: Baseline and End of Treatment ]
  10. Patient-rated Opioid use and Problems Responder Analysis as a measure of efficacy [ Time Frame: 24 weeks ]
  11. Physician-rated severity of opioid use and symptoms Responder Analysis as a measure of efficacy [ Time Frame: 24 weeks ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years to 65 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Voluntarily provide written informed consent prior to conduct of any study-related procedures
  • Completed 24 weeks of treatment in PRO-805
  • Deemed appropriate for entry into this extension study by the Investigator
  • Females of childbearing potential and fertile males must use a reliable means of contraception

Exclusion Criteria:

  • Presence of aspartate aminotransferase (AST) levels ≥ 3 X upper limit of normal and/or alanine aminotransferase (ALT) levels ≥ 3 X upper limit of normal and/or total bilirubin ≥ 1.5 X upper limit of normal and/or creatinine ≥ 1.5 X upper limit of normal
  • Current diagnosis of chronic pain requiring opioids for treatment
  • Pregnant or lactating females
  • Current use of agents metabolized through cytochrome P450 3A4 (CYP 3A4) such as azole antifungals (e.g., ketoconazole), macrolide antibiotics (e.g., erythromycin), and protease inhibitors (e.g., ritonavir, indinavir, and saquinavir)
  • Current anti-coagulant therapy (such as warfarin) or an INR > 1.2
  • Current use of benzodiazepines other than physician prescribed use
  • Significant medical or psychiatric symptoms, cognitive impairment, or other factors which in the opinion of the Investigator, would preclude compliance with the protocol, patient safety, adequate cooperation in the study, or obtaining informed consent
  • Concurrent medical conditions (such as severe respiratory insufficiency) that may prevent the patient from safely participating in study; and/or any pending legal action that could prohibit participation and/or compliance in study

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00630201

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United States, California
David Geffen School of Medicine at UCLA
Los Angeles, California, United States
Synergy Clinical Research Center
National City, California, United States, 91950
United States, Florida
Amit Vijapura, MD
Jacksonville, Florida, United States, 32256
Fidelity Clinical Research, Inc.
Lauderhill, Florida, United States
Scientific Clinical Research, Inc.
North Miami, Florida, United States, 33161
United States, Maryland
Behavioral Biology Research Unit, Johns Hopkins Bayview Campus
Baltimore, Maryland, United States
United States, Massachusetts
Dual Diagnosis Unit, SSTAR: Stanley Street Treatment and Resources, Inc.
Fall River, Massachusetts, United States
United States, Michigan
Wayne State Univ. School of Medicine, Dept of Psychiatry & Behavioral Neuroscience
Detroit, Michigan, United States
United States, Missouri
Psych Care Consultants Research
Saint Louis, Missouri, United States, 63128
United States, New York
New York VA Medical Center, NYU School of Medicine
New York, New York, United States
United States, North Carolina
Duke Addictions Program
Durham, North Carolina, United States, 27705
United States, Oklahoma
Pahl Pharmaceutical Research, LLC
Oklahoma City, Oklahoma, United States, 73118
United States, Pennsylvania
University of Pennsylvania, Treatment Research Center
Philadelphia, Pennsylvania, United States, 19104
United States, Washington
Providence Behavioral Health Services
Everett, Washington, United States, 98201-1067
Puget Sound Health CareSystem
Seattle, Washington, United States
Sponsors and Collaborators
Titan Pharmaceuticals
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Responsible Party: Titan Pharmaceuticals Identifier: NCT00630201    
Other Study ID Numbers: PRO-807
First Posted: March 6, 2008    Key Record Dates
Last Update Posted: December 31, 2018
Last Verified: June 2017
Keywords provided by Titan Pharmaceuticals:
opioid dependence
opioid addiction
opioid withdrawal
opioid pain medication
Additional relevant MeSH terms:
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Opioid-Related Disorders
Narcotic-Related Disorders
Substance-Related Disorders
Chemically-Induced Disorders
Mental Disorders
Analgesics, Opioid
Central Nervous System Depressants
Physiological Effects of Drugs
Sensory System Agents
Peripheral Nervous System Agents
Narcotic Antagonists