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Open-Label Study of Diclofenac Capsules to Treat Osteoarthritis Pain

A Multicenter, Open-Label, Safety Study of Diclofenac [Test] Capsules in Subjects With Osteoarthritis of the Knee or Hip

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01510912
Enrollment
602
Registered
2012-01-18
Start date
2012-01-31
Completion date
2013-03-31
Last updated
2014-05-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Osteoarthritis

Brief summary

The purpose of this study is to evaluate the safety of Diclofenac \[Test\] Capsules for the treatment of osteoarthritis pain of the knee or hip.

Interventions

DRUGDiclofenac

35 mg bid or tid Capsules

Sponsors

Iroko Pharmaceuticals, LLC
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
40 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Male or female ≥ \[greater than or equal to\] 40 years of age * If a participant in the previous DIC3-08-05 study, completed the study and did not discontinue for lack of efficacy or safety * Has a diagnosis of OA of the hip or knee with ongoing knee and/or articular hip pain * Is a current chronic user of nonsteroidal anti-inflammatory drugs (NSAIDs) and/or acetaminophen for his/her OA pain and is anticipated to benefit from continuous treatment with therapeutic doses of NSAIDs. A current chronic user is defined as a subject who has used these treatments for ≥ \[greater than or equal to\] 20 days of the last 30 days before screening

Exclusion criteria

* Has a known history of allergic reaction or clinically significant intolerance to acetaminophen, aspirin, or any nonsteroid anti-inflammatory drugs (NSAIDs), including diclofenac * Requires chronic use of opioid or opioid combination products to control OA pain of the knee or hip * Has any clinically significant unstable cardiac, respiratory, neurological, immunological, hematological, or renal disease * Has significant difficulties swallowing capsules or is unable to tolerate oral medication

Design outcomes

Primary

MeasureTime frameDescription
Safety of Diclofenac 35 mg Capsules as Assessed by the Incidence of Adverse Events From Baseline to Week 52 or Early TerminationBaseline to Week 52/Early TerminationThe safety of Diclofenac 35 mg capsules was assessed by the number of subjects with treatment-emergent adverse events (TEAEs), severe TEAEs, and serious adverse events.

Other

MeasureTime frameDescription
Mean Short Form-36 Physical Component Summary Scores at Week 52/Early Termination (ET) and Change From Baseline to Week 52/ETBaseline to Week 52/Early TerminationThe Short Form-36 is a validated 11-item health survey that assesses subject views about his/her functional health and well-being. The survey consists of 36 questions concerning daily or recent health-related activities and assesses 8 health domains using scaled scores. The physical component score is composed of a subset of the 8 health domains. Each scale is directly transformed into a 0 to 100 scale on the assumption that each question carries equal weight. A score of 0 is equal to maximum disability, and a score of 100 is equivalent to no disability.
Mean Short Form-36 Mental Component Summary Scores at Week 52/Early Termination (ET) and Change From Baseline to Week 52/ETBaseline to Week 52/Early TerminationThe Short Form-36 is a validated 11-item health survey that assesses subject views about his/her functional health and well-being. The survey consists of 36 questions concerning daily or recent health-related activities and assesses 8 health domains using scaled scores. The mental component score is composed of a subset of the 8 health domains. Each scale is directly transformed into a 0 to 100 scale on the assumption that each question carries equal weight. A score of 0 is equal to maximum disability, and a score of 100 is equivalent to no disability.

Countries

United States

Participant flow

Participants by arm

ArmCount
Diclofenac 35 mg Capsules
Participants were administered Diclofenac 35 mg capsules two times daily and could either be uptitrated to three times daily or remain at two times daily. Participants who were uptitrated to three times daily were allowed to downtitrate to two times daily either temporarily or permanently. Participants could change regimens between two and three times daily as often as needed, with the approval of the investigator.
601
Total601

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyAdverse Event99
Overall StudyLack of Efficacy12
Overall StudyLost to Follow-up26
Overall StudyNon-compliance with trial drug23
Overall StudyOther, including joint replacement5
Overall StudyPhysician Decision1
Overall StudyProtocol Violation27
Overall StudyWithdrawal by Subject49

Baseline characteristics

CharacteristicDiclofenac 35 mg Capsules
Age, Continuous59.7 years
STANDARD_DEVIATION 8.89
Baseline Mental Component Score of the Short Form-36 Questionnaire52.0 units on a scale
STANDARD_DEVIATION 9.6
Baseline Physical Component Score of the Short Form-36 Questionnaire39.5 units on a scale
STANDARD_DEVIATION 7.72
Body Mass Index30.574 kg/m2
STANDARD_DEVIATION 4.9818
Ethnicity (NIH/OMB)
Hispanic or Latino
40 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
561 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Height169.25 cm
STANDARD_DEVIATION 9.898
Race/Ethnicity, Customized
American Indian or Alaska Native
2 participants
Race/Ethnicity, Customized
Asian
6 participants
Race/Ethnicity, Customized
Black or African American
89 participants
Race/Ethnicity, Customized
Other
1 participants
Race/Ethnicity, Customized
White
506 participants
Sex: Female, Male
Female
372 Participants
Sex: Female, Male
Male
229 Participants
Weight87.93 kg
STANDARD_DEVIATION 17.005

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
191 / 601
serious
Total, serious adverse events
42 / 601

Outcome results

Primary

Safety of Diclofenac 35 mg Capsules as Assessed by the Incidence of Adverse Events From Baseline to Week 52 or Early Termination

The safety of Diclofenac 35 mg capsules was assessed by the number of subjects with treatment-emergent adverse events (TEAEs), severe TEAEs, and serious adverse events.

Time frame: Baseline to Week 52/Early Termination

ArmMeasureGroupValue (NUMBER)
Diclofenac 35 mg CapsulesSafety of Diclofenac 35 mg Capsules as Assessed by the Incidence of Adverse Events From Baseline to Week 52 or Early TerminationSubjects with at least 1 TEAE451 participants
Diclofenac 35 mg CapsulesSafety of Diclofenac 35 mg Capsules as Assessed by the Incidence of Adverse Events From Baseline to Week 52 or Early TerminationSubjects with at least 1 severe TEAE41 participants
Diclofenac 35 mg CapsulesSafety of Diclofenac 35 mg Capsules as Assessed by the Incidence of Adverse Events From Baseline to Week 52 or Early TerminationSubjects with at least 1 serious adverse event42 participants
Other Pre-specified

Mean Short Form-36 Mental Component Summary Scores at Week 52/Early Termination (ET) and Change From Baseline to Week 52/ET

The Short Form-36 is a validated 11-item health survey that assesses subject views about his/her functional health and well-being. The survey consists of 36 questions concerning daily or recent health-related activities and assesses 8 health domains using scaled scores. The mental component score is composed of a subset of the 8 health domains. Each scale is directly transformed into a 0 to 100 scale on the assumption that each question carries equal weight. A score of 0 is equal to maximum disability, and a score of 100 is equivalent to no disability.

Time frame: Baseline to Week 52/Early Termination

ArmMeasureGroupValue (MEAN)Dispersion
Diclofenac 35 mg CapsulesMean Short Form-36 Mental Component Summary Scores at Week 52/Early Termination (ET) and Change From Baseline to Week 52/ETMean score at Week 52/early termination (ET)52.3 units on a scaleStandard Deviation 9.44
Diclofenac 35 mg CapsulesMean Short Form-36 Mental Component Summary Scores at Week 52/Early Termination (ET) and Change From Baseline to Week 52/ETChange from baseline to Week 52/ET0.1 units on a scaleStandard Deviation 8.41
Other Pre-specified

Mean Short Form-36 Physical Component Summary Scores at Week 52/Early Termination (ET) and Change From Baseline to Week 52/ET

The Short Form-36 is a validated 11-item health survey that assesses subject views about his/her functional health and well-being. The survey consists of 36 questions concerning daily or recent health-related activities and assesses 8 health domains using scaled scores. The physical component score is composed of a subset of the 8 health domains. Each scale is directly transformed into a 0 to 100 scale on the assumption that each question carries equal weight. A score of 0 is equal to maximum disability, and a score of 100 is equivalent to no disability.

Time frame: Baseline to Week 52/Early Termination

ArmMeasureGroupValue (MEAN)Dispersion
Diclofenac 35 mg CapsulesMean Short Form-36 Physical Component Summary Scores at Week 52/Early Termination (ET) and Change From Baseline to Week 52/ETMean score at Week 52/early termination (ET)44.2 units on a scaleStandard Deviation 8.29
Diclofenac 35 mg CapsulesMean Short Form-36 Physical Component Summary Scores at Week 52/Early Termination (ET) and Change From Baseline to Week 52/ETMean change from baseline to Week 52/ET4.5 units on a scaleStandard Deviation 6.89

Source: ClinicalTrials.gov · Data processed: Mar 5, 2026