An Efficacy and Safety Study of Transdermal Therapeutic System (TTS)-Fentanyl in Participants With Osteoarthritis

Phase 4

Completed

Brief Summary: The purpose of this study is to evaluate the efficacy and safety of Transdermal Therapeutic System (TTS)-fentanyl patch (transdermal patch containing a drug that is put on the skin so the drug will enter the body through the skin) in participants with moderate (medium level of seriousness) to severe (very serious, life threatening) pain of osteoarthritis (disorder, which is seen mostly in older persons, in which the joints become painful and stiff).

Detailed Description: This is an open-label (a medical research study in which participants and researchers are told which treatments the participants are receiving, "unblinded"), single-arm, prospective (study following participants forward in time), study of TTS-fentanyl in participants with moderate to severe pain of osteoarthritis. The study will consist of 2 phases: screening phase up to 7 days before starting the treatment and treatment phase of 30 days. The first patch will be applied by investigator then by participants until 30 days. The dose of TTS-fentanyl can be increased, if needed, by 12.5 microgram per hour until adequate (reasonably good) pain control is achieved and taking into account the daily dose of supplemental paracetamol required by the participant. Other concomitant (given at the same time) analgesics (drug used to control pain) will not be used during this phase. Efficacy with regard to pain control will be recorded principally by the participant through questionnaires in a daily diary. This record will be used to support more detailed assessments at study visits on Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) questionnaire. Participants' safety will be monitored.

Recruitment & Eligibility

Inclusion Criteria

Chronic (lasting a long time) primary osteoarthritis pain for more than 3 months with Visual Analog Scale (VAS) greater than or equal to 5
Participants having moderate to severe pain (VAS greater than or equal to 5), which was not adequately controlled by weak opioids such as tramadol or codeine at optimal doses (at least 150 milligram [mg] per day for tramadol or 200 mg per day for codeine) for at least 7 consecutive days
Participants who failed from other treatments such as operation or lack of efficacy of current treatment

Exclusion Criteria

Skin disease that prevents the use of the transdermal system or which could affect the absorption of fentanyl or local tolerability
History or suspicion of alcohol or drug abuse within the past 5 years
History of cardiac, nervous system or respiratory disease which in the investigator's judgment precludes participation in the study because of the potential for respiratory depression
Confusion, reduced level of consciousness, or concomitant (given at the same time) psychiatric disorder which, in the opinion of the investigator, could prevent participation in the trial
Pregnant or breast-feeding female; female participants of child bearing potential without adequate contraception

Arm && Interventions

Group	Intervention	Description
Transdermal Therapeutic System (TTS)-fentanyl	TTS-fentanyl	TTS-fentanyl patches releasing at the rate of 12.5 microgram per hour for 3 days. The patches will be replaced every 3 days until 30 days.

Primary Outcome Measures

Name	Time	Method
Pain Intensity Score at Day 15	Day 15	The pain intensity was assessed by using a 10 centimeter (cm) Visual Analog Scale (VAS) ranging from 0 cm=no pain to 10 cm=worse pain.
Pain Intensity Score at Day 30	Day 30	The pain intensity was assessed by using a 10 cm VAS ranging from 0 cm=no pain to 10 cm=worse pain.

Secondary Outcome Measures

Name	Time	Method
Western Ontario McMaster Universities Osteoarthritis Index (WOMAC) Score at Day 15 and Day 30	Baseline, Day 15 and Day 30	The WOMAC is a self-administered; participant reported health status questionnaire designed to capture elements of pain, stiffness and physical impairment in participants with osteoarthritis. It consists of 24 questions (5 questions about pain, 2 about stiffness and 17 about physical function) scored on a VAS of 0 to 10 cm (0 cm=no pain to 10 cm=worse pain). Individual question responses are assigned a score of between 0=extreme and 4=none. Maximum scores for each element differ and therefore, scores were normalized. Total normalized score ranges from 0=worst to 100=best.