Chronic Pain Clinical Trial
Official title:
4-Week Randomized Multicenter DB, Placebo- and Active-controlled, Parallel-group, Forced-titration Phase 2B Study of Efficacy and Safety With CG5503 Prolonged Release (PR) to 233 mg BID and Oxycodone PR to 20 mg BID vs Placebo in Subjects With Moderate to Severe Chronic Pain of Knee Osteoarthritis
The purpose of this study was to examine a low and high dose of tapentadol extended release tablet taken orally twice a day to reduce pain in subjects suffering from chronic moderate to severe pain due to osteoarthritis of the knee during a 4-week period. Subjects steadily increased their dose up to the low (100 mg) or high (200 mg) dose. Pain relief was compared to subjects taking placebo tablets or oxycodone extended release tablet, 20 mg. The serum concentrations and safety of tapentadol and oxycodone were also examined.
Arthritis is the most common chronic debilitating disease in the United States (more than 43
million people or 1 in 6). Osteoarthritis of the knee is a very common and a major cause of
disability. Pharmacological treatment includes the following analgesics: non-steroidal
anti-inflammatory drugs (NSAIDs), cyclo-oxygenase II (COX-II) inhibitors, acetaminophen and
opioids. Despite the numerous available analgesic medications, 60% to 80% of patients
suffering from chronic pain are currently treated inadequately. Opioid analgesics have been
shown to be efficacious in chronic non-malignant pain and can be an important therapeutic
asset. The study was a 4-week randomized multicenter double-blind, placebo- and
active-controlled, parallel-group, forced-titration phase 2B study of efficacy and safety
with tapentadol extended release (ER) to 233 mg BID and oxycodone PR to 20 mg BID vs placebo
in subjects with moderate to severe chronic pain of knee osteoarthritis. Primary efficacy
outcome was the average pain intensity 24 hours before the last evaluation time or 29 days.
Safety was evaluated by reporting of adverse events, laboratory tests, vital sign measures,
ECGs. This study hypothesis was that tapentadol extended release was effective in relieving
chronic moderate to severe pain from knee osteoarthritis compared to treatment with placebo
using 2 dosing regimens for tapentadol.
tapentadol extended release white, fim-coated tablet taken orally twice a day during a
4-week period at a dose that steadily increased up to 100 mg or 200 mg; placebo tablets; or
oxycodone extended release tablet, 20 mg.
;
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double-Blind, Primary Purpose: Treatment
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