Buprenorphine Transdermal System (BTDS) in Subjects w/Mod-sev Osteoarthritis (OA) Chronic Pain of Knee

Sponsor
Purdue Pharma LP (Industry)
Overall Status
Completed
CT.gov ID
NCT00531427
Collaborator
(none)
567
87
2
26
6.5
0.3

Study Details

Study Description

Brief Summary

The objective of this study is to determine the analgesic efficacy and safety of Buprenorphine Transdermal System (BTDS) 10 and 20 compared to placebo in opioid-naïve subjects with moderate to severe chronic pain due to osteoarthritis (OA) of the knee. The double-blind treatment intervention duration is 12 weeks, during which time supplemental analgesic medication (immediate-release oxycodone for the first 6 days postrandomization and acetaminophen or ibuprofen for the remainder of the double-blind phase) will be provided to all subjects in addition to study drug.

Condition or Disease Intervention/Treatment Phase
Phase 3

Detailed Description

Buprenorphine is a synthetic opioid analgesic with over 25 years of international clinical experience indicating it to be safe and effective in a variety of therapeutic settings for the relief of moderate to severe pain. BTDS is a transdermal system formulation that is designed to deliver a consistent and a steady dose of buprenorphine over a 7-day period with limited blood concentration fluctuation.

Study Design

Study Type:
Interventional
Actual Enrollment :
567 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Masking:
Double (Participant, Investigator)
Primary Purpose:
Treatment
Official Title:
Randomized, Double-blind, Placebo-controlled With Open-label Run-in Assessing Efficacy, Tolerability,Safety of BTDS 10 or 20 Compared to Placebo in Opioid-naïve Subjects w/Moderate to Severe, Chronic Pain Due to OA of Knee
Study Start Date :
Sep 1, 2007
Actual Primary Completion Date :
Apr 1, 2009
Actual Study Completion Date :
Nov 1, 2009

Arms and Interventions

Arm Intervention/Treatment
Experimental: 1

Buprenorphine transdermal system 10 and 20 applied for 7-day wear

Drug: Buprenorphine
transdermal system 10 and 20 applied for 7-day wear

Placebo Comparator: 2

Placebo transdermal system to match BTDS patches, applied for 7-day wear

Drug: Placebo
transdermal system (placebo) applied for 7-day wear

Outcome Measures

Primary Outcome Measures

  1. "Average Pain Over the Last 24 Hours" Score of the Study Knee at Week 12 of the Double Blind Phase. [24 hours (week 12)]

    "Average pain over the last 24 hours" scores of the study knee at week 12 was evaluated on an 11-point scale: 0 = no pain, 10 = worst pain imaginable, recorded daily.

Secondary Outcome Measures

  1. Mean Daily Number of Tablets of Nonopioid Supplemental Analgesic Used From Week 2 to 12 of the Double-blind Phase. [10 weeks]

    Subjects were permitted to take sponsor-provided supplemental analgesic medication after week 1 of the double-blind treatment (acetaminophen or ibuprofen).

  2. Sleep Disturbance Subscale of the MOS-Sleep Scale at Weeks 4, 8, and 12 of the Double-blind Phase. [Weeks 4, 8, and 12 of the double-bind phase]

    The MOS Sleep Scale consists of 12 individual items (4 sleep disturbance, 2 sleep adequacy, 1 quantity of sleep and optimal sleep, 3 somnolence, 1 snoring, and 1 shortness of breath) and takes 5 to 10 minutes to complete. Question 1 is scored on a scale of 1 to 5 ( 1 = 0-15 min to more than 60 min) and Questions 2 to 12 are scored on a scale of 1 to 6 (1 = all of the time to 6 = none of the time. The Sleep Disturbance Subscale score is derived from the scores to Questions 1, 3, 7, and 8 and ranges from 0 to 100, where higher scores indicate greater sleep disturbance.

Eligibility Criteria

Criteria

Ages Eligible for Study:
40 Years and Older
Sexes Eligible for Study:
All
Accepts Healthy Volunteers:
No
Inclusion Criteria:
  • subjects with moderate to severe chronic osteoarthritis (OA) pain of the knee (lasting several hours daily) as their predominant pain condition,

  • clinical diagnosis of OA of the knee 1 year or longer,

  • subjects treated within the 14 days prior to screening with nonopioid therapy only, or with therapy including opioids at a dose of < 5 mg oxycodone (or equivalent) per day,

  • subjects whose OA knee pain is not adequately controlled with nonopioid analgesic medication and who the investigator feels are appropriate candidates for around-the-clock opioid therapy.

Exclusion Criteria:
  • subjects who have had arthroscopy on either knee or hip within 6 months of entering the study or open surgery on either knee or hip within 9 months of entering the study,

  • subjects who are allergic to buprenorphine or who have a history of allergies to other opioids,

  • subjects who have allergies or other contraindications to transdermal delivery systems or patch adhesives.

Other protocol-specific inclusion/exclusion criteria may apply.

Contacts and Locations

Locations

Site City State Country Postal Code
1 Coastal Clinical Research, Inc. Mobile Alabama United States 36608
2 Radiant Research, Phoenix Southeast Chandler Arizona United States 85225
3 Arizona Research Center, Inc. Phoenix Arizona United States 85023
4 Research Facility Phoenix Arizona United States 85029
5 Research Facility Phoenix Arizona United States 85032
6 Research Facility Anaheim California United States 92801
7 Lovelace Scientific Resources, Inc. Beverly Hills California United States 90211
8 Catalina Research Institute Chino California United States 91710
9 Research Facility Downey California United States 90241
10 Research Facility Foothill Ranch California United States 92610
11 Research Facility Laguna Hills California United States 92653
12 Research Facility Sacramento California United States 95831
13 Research Facility Littleton Colorado United States 80128
14 Research Facility Stamford Connecticut United States 06905
15 Coastal Pain Management Bradenton Florida United States 34209
16 Clinical Research of West Florida Clearwater Florida United States 33765
17 Research Facility Clearwater Florida United States 33765
18 Research Facility Jupiter Florida United States 33458-7200
19 Research Facility Largo Florida United States 33765
20 Pharmax Research Clinic Miami Florida United States 33126
21 Research Facility Miami Florida United States 33135
22 Research Facility Orlando Florida United States 32806
23 Research Facility Plantation Florida United States 33324
24 Research Facility Royal Palm Florida United States 33411
25 Clinical Research of West Flor Tampa Florida United States 33603
26 Research Facility Tampa Florida United States 33613
27 Research Facility Venice Florida United States 34292
28 Research Facility West Palm Beach Florida United States 33409
29 Research Facility Atlanta Georgia United States 30342
30 Research Facility Augusta Georgia United States 30901
31 AMR Research Associates Bogart Georgia United States 30622-6821
32 Research Facility Dawsonville Georgia United States 30534
33 Research Facility Decatur Georgia United States 30033
34 Research Facility Marietta Georgia United States 30066
35 Research Facility Honolulu Hawaii United States 96814-4526
36 Rehabilitation Association of IN Indianapolis Indiana United States 46250
37 Research Facility Overland Park Kansas United States 66211
38 Graves-Gilbert Clinic Bowling Green Kentucky United States 42101
39 Stat-Lab I, Inc. Baton Rouge Louisiana United States 70808
40 Research Facility New Iberia Louisiana United States 70563
41 Research Facility New Orleans Louisiana United States 70114
42 Research Facility Frederick Maryland United States 21702
43 Research Facility Brockton Massachusetts United States 02301
44 East Coast Clinical Research Haverhill Massachusetts United States 01830-6141
45 Research Facility Springfield Massachusetts United States 01103
46 Research Facility Bay City Michigan United States 48706
47 Premier Internal Medicine Biloxi Mississippi United States 39531
48 Research Facility Florissant Missouri United States 63031
49 Research Facility St. Louis Missouri United States 63117
50 Sports Med Consultants PC St. Louis Missouri United States 63141
51 Research Facility Henderson Nevada United States 89014
52 Research Facility New York New York United States 10004
53 Research Facility New York New York United States 10022
54 Research Facility Morgantown North Carolina United States 28655
55 Research Facility Winston-Salem North Carolina United States 27103
56 Research Facility Canton Ohio United States 44718
57 Research Facility Cincinnati Ohio United States 45242
58 Research Facility Columbus Ohio United States 43213
59 Research Facility Columbus Ohio United States 43235
60 Digestive Endoscopy Center Dayton Ohio United States 45415
61 Research Facility Dayton Ohio United States 45432
62 Research Facility Middleburg Heights Ohio United States 44130
63 Research Facility Mt. Gilead Ohio United States 43338
64 Research Facility Toledo Ohio United States 43623
65 Research Facility Oklahoma City Oklahoma United States 73109
66 Research Facility Eugene Oregon United States 97404
67 Research Facility Medford Oregon United States 97504-8311
68 Paramount Clinical Research Bridgeville Pennsylvania United States 15017
69 Research Facility Duncansville Pennsylvania United States 16635
70 Oyster Point Family Health Ctr Lancaster Pennsylvania United States 17601
71 Research Facility Mechanicsburg Pennsylvania United States 17055
72 Research Facility West Reading Pennsylvania United States 19611
73 New England Center for Clinical Research Cranston Rhode Island United States 02920
74 Research Facility Cranston Rhode Island United States 02920
75 Greenville Pharmaceutical Research Greenville South Carolina United States 29415
76 Arthritis Clinic, PLLC Jackson Tennessee United States 38305
77 Research Facility Austin Texas United States 78756
78 Research Facility Colleyville Texas United States 76034
79 Research Facility Dallas Texas United States 75230
80 Research Facility Nederland Texas United States 77627
81 Research Facility San Antonio Texas United States 78205-1116
82 Research Facility San Antonio Texas United States 78229
83 Research Facility Sugarland Texas United States 77479
84 Research Facility Salt Lake City Utah United States 84102
85 NDC Medical Center Norfolk Virginia United States 23502
86 Independence Family Medicine Virginia Beach Virginia United States 23455
87 Pacific Northwest Primary Care Tacoma Washington United States 98405

Sponsors and Collaborators

  • Purdue Pharma LP

Investigators

None specified.

Study Documents (Full-Text)

None provided.

More Information

Additional Information:

Publications

None provided.
Responsible Party:
Purdue Pharma LP
ClinicalTrials.gov Identifier:
NCT00531427
Other Study ID Numbers:
  • BUP3025
First Posted:
Sep 18, 2007
Last Update Posted:
Sep 10, 2012
Last Verified:
Sep 1, 2012
Keywords provided by Purdue Pharma LP
Additional relevant MeSH terms:

Study Results

Participant Flow

Recruitment Details 27-Sep-2007 (first patient first visit) to 28-Apr-2009 (last patient last visit) at 83 medical/research sites in US
Pre-assignment Detail Open-label run-in period designed to select those subjects who both tolerated and responded to treatment with BTDS 10 or BTDS 20 (an enriched design). N = 1151 entered the run-in period, and N = 571 completed. One subject was not dosed, therefore N = 570 randomized. N = 3 subjects did not have safety data, therefore N = 567 had double-blind data.
Arm/Group Title Double-blind BTDS 10 or 20 Double-blind Placebo
Arm/Group Description Buprenorphine transdermal patches (BTDS) 10 or 20 mcg/h applied for 7-day wear Placebo patches to match the BTDS patches applied for 7-day wear
Period Title: Overall Study
STARTED 282 285
COMPLETED 209 191
NOT COMPLETED 73 94

Baseline Characteristics

Arm/Group Title Double-blind BTDS 10 or 20 Double-blind Placebo Total
Arm/Group Description Buprenorphine transdermal patches (BTDS) 10 or 20 mcg/h applied for 7-day wear Placebo patches to match the BTDS patches applied for 7-day wear Total of all reporting groups
Overall Participants 282 285 567
Age (years) [Mean (Standard Deviation) ]
Mean (Standard Deviation) [years]
59.1
(9.75)
59.1
(9.77)
59.1
(9.75)
Sex: Female, Male (Count of Participants)
Female
175
62.1%
181
63.5%
356
62.8%
Male
107
37.9%
104
36.5%
211
37.2%

Outcome Measures

1. Primary Outcome
Title "Average Pain Over the Last 24 Hours" Score of the Study Knee at Week 12 of the Double Blind Phase.
Description "Average pain over the last 24 hours" scores of the study knee at week 12 was evaluated on an 11-point scale: 0 = no pain, 10 = worst pain imaginable, recorded daily.
Time Frame 24 hours (week 12)

Outcome Measure Data

Analysis Population Description
The full analysis population is the group of subjects who were randomized and received at least 1 dose of double-blind study drug
Arm/Group Title Double-blind BTDS 10 or 20 Double-blind Placebo
Arm/Group Description Buprenorphine transdermal patches (BTDS) 10 or 20 mcg/h applied for 7-day wear Placebo patches to match the BTDS patches applied for 7-day wear
Measure Participants 283 287
Screening (Visit 2)
7.16
(1.340)
7.06
(1.300)
Prerandomization (Visit 3)
2.63
(1.292)
2.74
(1.186)
Double-blind Week 12 (Visit 8)
3.82
(2.644)
4.22
(2.644)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Double-blind BTDS 10 or 20, Double-blind Placebo
Comments [Week 12 analysis] The null hypothesis was "no group differences." The alternative hypothesis was that BTDS arm was superior to the placebo arm. Pain scale is 11 points (0 = no pain to 10 = pain as bad as you can imagine).
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.0853
Comments
Method Mixed Models Analysis
Comments Statistics are based on a mixed effect general linear model
Method of Estimation Estimation Parameter Mean Difference (Final Values)
Estimated Value -0.37
Confidence Interval (2-Sided) 95%
-0.80 to 0.05
Parameter Dispersion Type:
Value:
Estimation Comments
2. Secondary Outcome
Title Mean Daily Number of Tablets of Nonopioid Supplemental Analgesic Used From Week 2 to 12 of the Double-blind Phase.
Description Subjects were permitted to take sponsor-provided supplemental analgesic medication after week 1 of the double-blind treatment (acetaminophen or ibuprofen).
Time Frame 10 weeks

Outcome Measure Data

Analysis Population Description
Subjects in the full analysis population who took at least 1 dose of supplemental analgesic medication.
Arm/Group Title Double-blind BTDS 10 or 20 Double-blind Placebo
Arm/Group Description Buprenorphine transdermal patches (BTDS) 10 or 20 mcg/h applied for 7-day wear Placebo patches to match the BTDS patches applied for 7-day wear
Measure Participants 136 154
Mean (Standard Deviation) [tablets]
0.701
(0.8139)
0.740
(0.8566)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Double-blind BTDS 10 or 20, Double-blind Placebo
Comments Categorical analysis P value is based on a Fisher's exact test. Mean daily number of tablets for subjects who took <=1 dose of supplemental analgesia
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.7098
Comments To control multiplicity and family-wise error rate, a gate-keeping strategy (stepwise approach) was used to evaluate the statistical significance of the secondary variables. If the primary is negative, the secondary P values are descriptive only.
Method ANCOVA
Comments with treatment as a factor and screening and pre-randomization mean pain as covariates.
Method of Estimation Estimation Parameter Mean Difference (Final Values)
Estimated Value -0.037
Confidence Interval (2-Sided) 95%
-0.233 to 0.159
Parameter Dispersion Type:
Value:
Estimation Comments
3. Secondary Outcome
Title Sleep Disturbance Subscale of the MOS-Sleep Scale at Weeks 4, 8, and 12 of the Double-blind Phase.
Description The MOS Sleep Scale consists of 12 individual items (4 sleep disturbance, 2 sleep adequacy, 1 quantity of sleep and optimal sleep, 3 somnolence, 1 snoring, and 1 shortness of breath) and takes 5 to 10 minutes to complete. Question 1 is scored on a scale of 1 to 5 ( 1 = 0-15 min to more than 60 min) and Questions 2 to 12 are scored on a scale of 1 to 6 (1 = all of the time to 6 = none of the time. The Sleep Disturbance Subscale score is derived from the scores to Questions 1, 3, 7, and 8 and ranges from 0 to 100, where higher scores indicate greater sleep disturbance.
Time Frame Weeks 4, 8, and 12 of the double-bind phase

Outcome Measure Data

Analysis Population Description
Full Analysis Population (N = 570) consisted of subjects who were randomized and received at least 1 dose of double-blind study drug.
Arm/Group Title Double-blind BTDS 10 or 20 Double-blind Placebo
Arm/Group Description Buprenorphine transdermal patches (BTDS) 10 or 20 mcg/h applied for 7-day wear Placebo patches to match the BTDS patches applied for 7-day wear
Measure Participants 283 287
Screening
49.51
(24.790)
51.23
(25.945)
Prerandomization
23.23
(19.583)
26.04
(20.822)
Week 4
27.22
(23.086)
35.08
(25.565)
Week 8
27.46
(23.795)
34.78
(24.715)
Week 12
29.60
(25.177)
33.63
(25.606)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Double-blind BTDS 10 or 20, Double-blind Placebo
Comments Weeks 4, 8, 12 analysis The sleep disturbance subscale was analyzed using the mixed effect linear model with fixed effects for treatment (BTDS or placebo) and time (weeks 1, 2, 4, 8, 12) as categorical, screening mean and prerandomization mean value as covariates, and subject as a random effect.
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.0034
Comments To control multiplicity and family-wise error rate, a gate-keeping strategy (stepwise approach) was used to evaluate the statistical significance of the secondary variables. If the primary is negative, the secondary P values are descriptive only.
Method Mixed Models Analysis
Comments
Method of Estimation Estimation Parameter Mean Difference (Final Values)
Estimated Value -4.46
Confidence Interval (2-Sided) 95%
-7.44 to -1.48
Parameter Dispersion Type:
Value:
Estimation Comments

Adverse Events

Time Frame Adverse Events (AEs) that occurred after the signing of the informed consent up to end of study and 7 days after discontinuation; or Serious AEs occurring up to 30 days following the last study visit were followed until resolution or for up to 30 days.
Adverse Event Reporting Description AEs were obtained through spontaneous reports and subject interview.
Arm/Group Title Double-blind BTDS Double-blind Placebo Open-label Run-in Period
Arm/Group Description Buprenorphine transdermal patches (BTDS) 10 or 20 mcg/h applied for 7-day wear Placebo patches to match the BTDS patches applied for 7-day wear The open-label run-in period was designed with duration of time sufficient to select those subjects who both tolerated and responded to treatment with BTDS 10 or BTDS 20 (an enriched design). During this period, subjects were required to discontinue use of all nonstudy drugs used for the treatment of chronic pain and no supplemental analgesic medications were allowed. Subjects who did not tolerate BTDS 5 were discontinued from the study.
All Cause Mortality
Double-blind BTDS Double-blind Placebo Open-label Run-in Period
Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
Total / (NaN) / (NaN) / (NaN)
Serious Adverse Events
Double-blind BTDS Double-blind Placebo Open-label Run-in Period
Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
Total 13/282 (4.6%) 3/285 (1.1%) 5/1151 (0.4%)
Cardiac disorders
Arteriosclerosis coronary artery - DEATH 0/282 (0%) 0 0/285 (0%) 0 1/1151 (0.1%) 1
Atrial fibrillation 1/282 (0.4%) 1 1/285 (0.4%) 1 0/1151 (0%) 0
Atrial flutter 1/282 (0.4%) 1 0/285 (0%) 0 0/1151 (0%) 0
Bradycardia 2/282 (0.7%) 2 0/285 (0%) 0 0/1151 (0%) 0
Coronary artery disease 2/282 (0.7%) 2 0/285 (0%) 0 0/1151 (0%) 0
Coronary artery stenosis 0/282 (0%) 0 1/285 (0.4%) 1 0/1151 (0%) 0
Hypertensive heart disease - DEATH 0/282 (0%) 0 0/285 (0%) 0 1/1151 (0.1%) 1
Myocardial infarction 1/282 (0.4%) 1 0/285 (0%) 0 0/1151 (0%) 0
Acute myocardial infarction 1/282 (0.4%) 1 0/285 (0%) 0 1/1151 (0.1%) 1
Atrioventricular block second degree 1/282 (0.4%) 1 0/285 (0%) 0 0/1151 (0%) 0
Ear and labyrinth disorders
Vertigo 1/282 (0.4%) 1 0/285 (0%) 0 0/1151 (0%) 0
Gastrointestinal disorders
Vomiting 0/282 (0%) 0 1/285 (0.4%) 1 1/1151 (0.1%) 1
Abdominal pain 0/282 (0%) 0 1/285 (0.4%) 1 0/1151 (0%) 0
Nausea 0/282 (0%) 0 1/285 (0.4%) 1 0/1151 (0%) 0
General disorders
Chest pain 1/282 (0.4%) 1 0/285 (0%) 0 0/1151 (0%) 0
Noncardiac chest pain 1/282 (0.4%) 1 0/285 (0%) 0 1/1151 (0.1%) 1
Immune system disorders
Drug hypersensitivity 0/282 (0%) 0 0/285 (0%) 0 1/1151 (0.1%) 1
Injury, poisoning and procedural complications
Cardiac procedure complications 0/282 (0%) 0 0/285 (0%) 0 1/1151 (0.1%) 1
Collapse of lung 1/282 (0.4%) 1 0/285 (0%) 0 0/1151 (0%) 0
Fall 1/282 (0.4%) 1 0/285 (0%) 0 0/1151 (0%) 0
Hip fracture 1/282 (0.4%) 1 0/285 (0%) 0 0/1151 (0%) 0
Investigations
Blood pressure increased 1/282 (0.4%) 1 0/285 (0%) 0 0/1151 (0%) 0
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Endometrial cancer 1/282 (0.4%) 1 0/285 (0%) 0 0/1151 (0%) 0
Small cell lung cancer metastatic 1/282 (0.4%) 1 0/285 (0%) 0 0/1151 (0%) 0
Nervous system disorders
Dizziness 1/282 (0.4%) 1 0/285 (0%) 0 0/1151 (0%) 0
Syncope 1/282 (0.4%) 1 0/285 (0%) 0 0/1151 (0%) 0
Psychiatric disorders
Alcoholism 1/282 (0.4%) 1 0/285 (0%) 0 0/1151 (0%) 0
Disorientation 0/282 (0%) 0 0/285 (0%) 0 1/1151 (0.1%) 1
Vascular disorders
Deep vein thrombosis 1/282 (0.4%) 1 0/285 (0%) 0 0/1151 (0%) 0
Other (Not Including Serious) Adverse Events
Double-blind BTDS Double-blind Placebo Open-label Run-in Period
Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
Total 108/282 (38.3%) 53/285 (18.6%) 520/1151 (45.2%)
Gastrointestinal disorders
Nausea 34/282 (12.1%) 14/285 (4.9%) 242/1151 (21%)
Vomiting 19/282 (6.7%) 5/285 (1.8%) 90/1151 (7.8%)
Constipation 19/282 (6.7%) 2/285 (0.7%) 90/1151 (7.8%)
General disorders
Application site pruritus 31/282 (11%) 18/285 (6.3%) 96/1151 (8.3%)
Application site erythema 21/282 (7.4%) 14/285 (4.9%) 37/1151 (3.2%)
Application site rash 16/282 (5.7%) 10/285 (3.5%) 37/1151 (3.2%)
Fatigue 7/282 (2.5%) 3/285 (1.1%) 62/1151 (5.4%)
Nervous system disorders
Dizziness 7/282 (2.5%) 6/285 (2.1%) 132/1151 (11.5%)
Somnolence 10/282 (3.5%) 5/285 (1.8%) 119/1151 (10.3%)
Headache 18/282 (6.4%) 20/285 (7%) 93/1151 (8.1%)
Psychiatric disorders
Anxiety 16/282 (5.7%) 2/285 (0.7%) 12/1151 (1%)

Limitations/Caveats

[Not Specified]

More Information

Certain Agreements

Principal Investigators are NOT employed by the organization sponsoring the study.

The only disclosure restriction on the PI is that the sponsor can review results communications prior to public release and can embargo communications regarding trial results for a period that is more than 60 days but less than or equal to 180 days. The sponsor cannot require changes to the communication and cannot extend the embargo.

Results Point of Contact

Name/Title Clinical Leader, Executive Medical Director
Organization Purdue Pharma
Phone 800-733-1333
Email
Responsible Party:
Purdue Pharma LP
ClinicalTrials.gov Identifier:
NCT00531427
Other Study ID Numbers:
  • BUP3025
First Posted:
Sep 18, 2007
Last Update Posted:
Sep 10, 2012
Last Verified:
Sep 1, 2012