Trial Outcomes & Findings for Colchicine for the Treatment of Osteoarthritis of the Knee (NCT NCT03913442)
NCT ID: NCT03913442
Last Updated: 2025-02-03
Results Overview
VAS is a tool widely used to measure pain. A patient is asked to indicate his/her perceived pain intensity (most commonly) along a 10 mm horizontal line, and this rating is then measured from the left edge (=VAS score). The total score range is 0 (no pain) to 10 (worst pain imaginable); the higher the score, the worse the pain.
COMPLETED
PHASE4
120 participants
Baseline, 3 Months
2025-02-03
Participant Flow
Participant milestones
| Measure |
Placebo
Placebo in capsule identical to study drug
Placebo oral capsule: Placebo 0.8 mg or 0.6 mg orally once daily for 3 months
|
Colchicine
0.6 or 0.8 mg orally once daily.
Because recent studies suggest that a dose of 0.6mg may be sufficient for chronic inflammatory suppression and may reduce the already low risk of toxicity of 0.8mg, for the remainder (second half) of the study the dosage will be switched from 0.8mg to a 0.6mg dose to allow comparison of the two doses.
Colchicine 0.8 mg or 0.6 mg orally once daily: Colchicine 0.8 mg orally once daily for 1.5 months, and then 0.6 mg once daily for the remainder of the time (1.5 months)
|
|---|---|---|
|
Overall Study
STARTED
|
60
|
60
|
|
Overall Study
COMPLETED
|
51
|
49
|
|
Overall Study
NOT COMPLETED
|
9
|
11
|
Reasons for withdrawal
| Measure |
Placebo
Placebo in capsule identical to study drug
Placebo oral capsule: Placebo 0.8 mg or 0.6 mg orally once daily for 3 months
|
Colchicine
0.6 or 0.8 mg orally once daily.
Because recent studies suggest that a dose of 0.6mg may be sufficient for chronic inflammatory suppression and may reduce the already low risk of toxicity of 0.8mg, for the remainder (second half) of the study the dosage will be switched from 0.8mg to a 0.6mg dose to allow comparison of the two doses.
Colchicine 0.8 mg or 0.6 mg orally once daily: Colchicine 0.8 mg orally once daily for 1.5 months, and then 0.6 mg once daily for the remainder of the time (1.5 months)
|
|---|---|---|
|
Overall Study
Adverse Event
|
0
|
3
|
|
Overall Study
Withdrawal by Subject
|
5
|
5
|
|
Overall Study
Terminations
|
2
|
1
|
|
Overall Study
Lost to Follow-up
|
2
|
2
|
Baseline Characteristics
Colchicine for the Treatment of Osteoarthritis of the Knee
Baseline characteristics by cohort
| Measure |
Placebo
n=51 Participants
Placebo in capsule identical to study drug
Placebo oral capsule: Placebo 0.8 mg or 0.6 mg orally once daily for 3 months
|
Colchicine
n=49 Participants
0.6 or 0.8 mg orally once daily.
Because recent studies suggest that a dose of 0.6mg may be sufficient for chronic inflammatory suppression and may reduce the already low risk of toxicity of 0.8mg, for the remainder (second half) of the study the dosage will be switched from 0.8mg to a 0.6mg dose to allow comparison of the two doses.
Colchicine 0.8 mg or 0.6 mg orally once daily: Colchicine 0.8 mg orally once daily for 1.5 months, and then 0.6 mg once daily for the remainder of the time (1.5 months)
|
Total
n=100 Participants
Total of all reporting groups
|
|---|---|---|---|
|
Age, Continuous
|
66.8 years
STANDARD_DEVIATION 10.3 • n=5 Participants
|
66.1 years
STANDARD_DEVIATION 10 • n=7 Participants
|
66.5 years
STANDARD_DEVIATION 10.2 • n=5 Participants
|
|
Sex: Female, Male
Female
|
33 Participants
n=5 Participants
|
35 Participants
n=7 Participants
|
68 Participants
n=5 Participants
|
|
Sex: Female, Male
Male
|
18 Participants
n=5 Participants
|
14 Participants
n=7 Participants
|
32 Participants
n=5 Participants
|
|
Ethnicity (NIH/OMB)
Hispanic or Latino
|
10 Participants
n=5 Participants
|
12 Participants
n=7 Participants
|
22 Participants
n=5 Participants
|
|
Ethnicity (NIH/OMB)
Not Hispanic or Latino
|
41 Participants
n=5 Participants
|
37 Participants
n=7 Participants
|
78 Participants
n=5 Participants
|
|
Ethnicity (NIH/OMB)
Unknown or Not Reported
|
0 Participants
n=5 Participants
|
0 Participants
n=7 Participants
|
0 Participants
n=5 Participants
|
|
Race (NIH/OMB)
American Indian or Alaska Native
|
0 Participants
n=5 Participants
|
0 Participants
n=7 Participants
|
0 Participants
n=5 Participants
|
|
Race (NIH/OMB)
Asian
|
3 Participants
n=5 Participants
|
2 Participants
n=7 Participants
|
5 Participants
n=5 Participants
|
|
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
|
0 Participants
n=5 Participants
|
0 Participants
n=7 Participants
|
0 Participants
n=5 Participants
|
|
Race (NIH/OMB)
Black or African American
|
13 Participants
n=5 Participants
|
12 Participants
n=7 Participants
|
25 Participants
n=5 Participants
|
|
Race (NIH/OMB)
White
|
33 Participants
n=5 Participants
|
30 Participants
n=7 Participants
|
63 Participants
n=5 Participants
|
|
Race (NIH/OMB)
More than one race
|
0 Participants
n=5 Participants
|
0 Participants
n=7 Participants
|
0 Participants
n=5 Participants
|
|
Race (NIH/OMB)
Unknown or Not Reported
|
2 Participants
n=5 Participants
|
5 Participants
n=7 Participants
|
7 Participants
n=5 Participants
|
|
Region of Enrollment
United States
|
51 participants
n=5 Participants
|
49 participants
n=7 Participants
|
100 participants
n=5 Participants
|
PRIMARY outcome
Timeframe: Baseline, 3 MonthsVAS is a tool widely used to measure pain. A patient is asked to indicate his/her perceived pain intensity (most commonly) along a 10 mm horizontal line, and this rating is then measured from the left edge (=VAS score). The total score range is 0 (no pain) to 10 (worst pain imaginable); the higher the score, the worse the pain.
Outcome measures
| Measure |
Placebo
n=51 Participants
Placebo in capsule identical to study drug
Placebo oral capsule: Placebo 0.8 mg or 0.6 mg orally once daily for 3 months
|
Colchicine
n=49 Participants
0.6 or 0.8 mg orally once daily.
Because recent studies suggest that a dose of 0.6mg may be sufficient for chronic inflammatory suppression and may reduce the already low risk of toxicity of 0.8mg, for the remainder (second half) of the study the dosage will be switched from 0.8mg to a 0.6mg dose to allow comparison of the two doses.
Colchicine 0.8 mg or 0.6 mg orally once daily: Colchicine 0.8 mg orally once daily for 1.5 months, and then 0.6 mg once daily for the remainder of the time (1.5 months)
|
|---|---|---|
|
Change in Visual Analog Scale (VAS) Pain Score
|
-1.45 score on a scale
Standard Deviation 2.45
|
-1.16 score on a scale
Standard Deviation 2.22
|
SECONDARY outcome
Timeframe: Baseline, 3 MonthsThe KOOS survey is comprised of 42 questions. The questions are divided into 5 sub-categories: symptoms/stiffness (7 questions), pain (9 questions), function/daily living (17 questions), function/sports and recreational activities (5 questions), and quality of life (4 questions). The KOOS Pain Score refers to a specific subscale within the KOOS questionnaire that measures the severity of knee pain experienced by a patient, consisting of nine questions where each response is scored on a scale from 0 (no pain) to 4 (extreme pain), with a higher score indicating greater pain intensity; the overall pain score is then calculated as a percentage of the maximum possible score, where 0 represents the worst possible pain and 100 represents no pain at all.
Outcome measures
| Measure |
Placebo
n=51 Participants
Placebo in capsule identical to study drug
Placebo oral capsule: Placebo 0.8 mg or 0.6 mg orally once daily for 3 months
|
Colchicine
n=49 Participants
0.6 or 0.8 mg orally once daily.
Because recent studies suggest that a dose of 0.6mg may be sufficient for chronic inflammatory suppression and may reduce the already low risk of toxicity of 0.8mg, for the remainder (second half) of the study the dosage will be switched from 0.8mg to a 0.6mg dose to allow comparison of the two doses.
Colchicine 0.8 mg or 0.6 mg orally once daily: Colchicine 0.8 mg orally once daily for 1.5 months, and then 0.6 mg once daily for the remainder of the time (1.5 months)
|
|---|---|---|
|
Change in the Knee Injury and Osteoarthritis Outcome Score (KOOS) Pain Score
|
9.5 score on a scale
Standard Deviation 20
|
5.2 score on a scale
Standard Deviation 19
|
SECONDARY outcome
Timeframe: Baseline, 3 MonthsThe KOOS survey is comprised of 42 questions. The questions are divided into 5 sub-categories: symptoms/stiffness (7 questions), pain (9 questions), function/daily living (17 questions), function/sports and recreational activities (5 questions), and quality of life (4 questions). Each item on the KOOS is scored on a scale from 0 (no problems) to 4 (extreme problems), and then the scores are calculated to generate a final score between 0 and 100. The KOOS stiffness score is a percentage from 0 to 100 that measures how much stiffness a patient experiences in their knee. A score of 0 indicates the most stiffness, while a score of 100 indicates no stiffness.
Outcome measures
| Measure |
Placebo
n=51 Participants
Placebo in capsule identical to study drug
Placebo oral capsule: Placebo 0.8 mg or 0.6 mg orally once daily for 3 months
|
Colchicine
n=49 Participants
0.6 or 0.8 mg orally once daily.
Because recent studies suggest that a dose of 0.6mg may be sufficient for chronic inflammatory suppression and may reduce the already low risk of toxicity of 0.8mg, for the remainder (second half) of the study the dosage will be switched from 0.8mg to a 0.6mg dose to allow comparison of the two doses.
Colchicine 0.8 mg or 0.6 mg orally once daily: Colchicine 0.8 mg orally once daily for 1.5 months, and then 0.6 mg once daily for the remainder of the time (1.5 months)
|
|---|---|---|
|
Change in the KOOS Stiffness Score
|
6.6 score on a scale
Standard Deviation 15.7
|
5.5 score on a scale
Standard Deviation 19.1
|
SECONDARY outcome
Timeframe: Baseline, 3 MonthsThe KOOS's five patient-relevant dimensions are scored separately: Pain (9 items); Symptoms/Stiffness (7 items); Function, Daily Living (17 items); Function, Sports and Recreational Activities (5 items); Quality of Life (4 items). The KOOS Physical Function items are scored on a Likert scale from 0 to 4, with 0 indicating no problems and 4 indicating extreme problems. The scores for each dimension are then transformed to a scale from 0 to 100, where 0 represents extreme problems with knee function and 100 indicates no problems at all.
Outcome measures
| Measure |
Placebo
n=51 Participants
Placebo in capsule identical to study drug
Placebo oral capsule: Placebo 0.8 mg or 0.6 mg orally once daily for 3 months
|
Colchicine
n=49 Participants
0.6 or 0.8 mg orally once daily.
Because recent studies suggest that a dose of 0.6mg may be sufficient for chronic inflammatory suppression and may reduce the already low risk of toxicity of 0.8mg, for the remainder (second half) of the study the dosage will be switched from 0.8mg to a 0.6mg dose to allow comparison of the two doses.
Colchicine 0.8 mg or 0.6 mg orally once daily: Colchicine 0.8 mg orally once daily for 1.5 months, and then 0.6 mg once daily for the remainder of the time (1.5 months)
|
|---|---|---|
|
Change in the KOOS Physical Function Score
|
9.8 score on a scale
Standard Deviation 17.6
|
7.4 score on a scale
Standard Deviation 17.5
|
SECONDARY outcome
Timeframe: Baseline, 3 MonthsThe KOOS survey is comprised of 42 questions. The questions are divided into 5 sub-categories: symptoms/stiffness (7 questions), pain (9 questions), function/daily living (17 questions), function/sports and recreational activities (5 questions), and quality of life (4 questions). A KOOS Quality of Life score ranges from 0 to 100, where 0 represents the worst possible knee-related quality of life and 100 indicates no problems at all. A higher score indicates better quality of life related to the knee.
Outcome measures
| Measure |
Placebo
n=51 Participants
Placebo in capsule identical to study drug
Placebo oral capsule: Placebo 0.8 mg or 0.6 mg orally once daily for 3 months
|
Colchicine
n=49 Participants
0.6 or 0.8 mg orally once daily.
Because recent studies suggest that a dose of 0.6mg may be sufficient for chronic inflammatory suppression and may reduce the already low risk of toxicity of 0.8mg, for the remainder (second half) of the study the dosage will be switched from 0.8mg to a 0.6mg dose to allow comparison of the two doses.
Colchicine 0.8 mg or 0.6 mg orally once daily: Colchicine 0.8 mg orally once daily for 1.5 months, and then 0.6 mg once daily for the remainder of the time (1.5 months)
|
|---|---|---|
|
Change in the KOOS Quality of Life Score
|
6.9 score on a scale
Standard Deviation 22
|
3.5 score on a scale
Standard Deviation 15.8
|
SECONDARY outcome
Timeframe: Baseline, 3 MonthsThe KOOS's five patient-relevant dimensions are scored separately: Pain (9 items); Symptoms/Stiffness (7 items); Function, Daily Living (17 items); Function, Sports and Recreational Activities (5 items); Quality of Life (4 items). The KOOS Sports and Recreational Activities 9 items are scored on a Likert scale from 0 to 4, with 0 indicating no problems and 4 indicating extreme problems relating to sports and recreational activities. The scores are then transformed to a scale from 0 to 100, with 100 indicating no knee problems with sports and recreational activities and 0 indicating extreme knee problems with sports and recreational activities .
Outcome measures
| Measure |
Placebo
n=51 Participants
Placebo in capsule identical to study drug
Placebo oral capsule: Placebo 0.8 mg or 0.6 mg orally once daily for 3 months
|
Colchicine
n=49 Participants
0.6 or 0.8 mg orally once daily.
Because recent studies suggest that a dose of 0.6mg may be sufficient for chronic inflammatory suppression and may reduce the already low risk of toxicity of 0.8mg, for the remainder (second half) of the study the dosage will be switched from 0.8mg to a 0.6mg dose to allow comparison of the two doses.
Colchicine 0.8 mg or 0.6 mg orally once daily: Colchicine 0.8 mg orally once daily for 1.5 months, and then 0.6 mg once daily for the remainder of the time (1.5 months)
|
|---|---|---|
|
Change in the KOOS Sports and Recreational Activities
|
0.0 score on a scale
Standard Deviation 25.8
|
2.8 score on a scale
Standard Deviation 19.4
|
SECONDARY outcome
Timeframe: Baseline, 3 MonthsThe KOOS survey is comprised of 42 questions. The questions are divided into 5 sub-categories: symptoms/stiffness (7 questions), pain (9 questions), function/daily living (17 questions), function/sports and recreational activities (5 questions), and quality of life (4 questions). The total range for each sub-category is 0-100, making the total range for the whole survey 0-500. The higher the score, the worse the symptoms and pain/ higher difficulty in function.
Outcome measures
| Measure |
Placebo
n=51 Participants
Placebo in capsule identical to study drug
Placebo oral capsule: Placebo 0.8 mg or 0.6 mg orally once daily for 3 months
|
Colchicine
n=49 Participants
0.6 or 0.8 mg orally once daily.
Because recent studies suggest that a dose of 0.6mg may be sufficient for chronic inflammatory suppression and may reduce the already low risk of toxicity of 0.8mg, for the remainder (second half) of the study the dosage will be switched from 0.8mg to a 0.6mg dose to allow comparison of the two doses.
Colchicine 0.8 mg or 0.6 mg orally once daily: Colchicine 0.8 mg orally once daily for 1.5 months, and then 0.6 mg once daily for the remainder of the time (1.5 months)
|
|---|---|---|
|
Change in the KOOS Total Score
|
6.5 score on a scale
Standard Deviation 20.7
|
4.9 score on a scale
Standard Deviation 18.1
|
SECONDARY outcome
Timeframe: 6 weeksOutcome measures
| Measure |
Placebo
n=51 Participants
Placebo in capsule identical to study drug
Placebo oral capsule: Placebo 0.8 mg or 0.6 mg orally once daily for 3 months
|
Colchicine
n=49 Participants
0.6 or 0.8 mg orally once daily.
Because recent studies suggest that a dose of 0.6mg may be sufficient for chronic inflammatory suppression and may reduce the already low risk of toxicity of 0.8mg, for the remainder (second half) of the study the dosage will be switched from 0.8mg to a 0.6mg dose to allow comparison of the two doses.
Colchicine 0.8 mg or 0.6 mg orally once daily: Colchicine 0.8 mg orally once daily for 1.5 months, and then 0.6 mg once daily for the remainder of the time (1.5 months)
|
|---|---|---|
|
Number of Participants Who Used Acetaminophen or Other Medications for Pain
|
15 Participants
|
13 Participants
|
SECONDARY outcome
Timeframe: 3 MonthsOutcome measures
| Measure |
Placebo
n=51 Participants
Placebo in capsule identical to study drug
Placebo oral capsule: Placebo 0.8 mg or 0.6 mg orally once daily for 3 months
|
Colchicine
n=49 Participants
0.6 or 0.8 mg orally once daily.
Because recent studies suggest that a dose of 0.6mg may be sufficient for chronic inflammatory suppression and may reduce the already low risk of toxicity of 0.8mg, for the remainder (second half) of the study the dosage will be switched from 0.8mg to a 0.6mg dose to allow comparison of the two doses.
Colchicine 0.8 mg or 0.6 mg orally once daily: Colchicine 0.8 mg orally once daily for 1.5 months, and then 0.6 mg once daily for the remainder of the time (1.5 months)
|
|---|---|---|
|
Number of Participants Who Used Acetaminophen or Other Medications for Pain
|
16 Participants
|
12 Participants
|
SECONDARY outcome
Timeframe: 6 weeks, 3 monthsOutcome measures
| Measure |
Placebo
n=51 Participants
Placebo in capsule identical to study drug
Placebo oral capsule: Placebo 0.8 mg or 0.6 mg orally once daily for 3 months
|
Colchicine
n=49 Participants
0.6 or 0.8 mg orally once daily.
Because recent studies suggest that a dose of 0.6mg may be sufficient for chronic inflammatory suppression and may reduce the already low risk of toxicity of 0.8mg, for the remainder (second half) of the study the dosage will be switched from 0.8mg to a 0.6mg dose to allow comparison of the two doses.
Colchicine 0.8 mg or 0.6 mg orally once daily: Colchicine 0.8 mg orally once daily for 1.5 months, and then 0.6 mg once daily for the remainder of the time (1.5 months)
|
|---|---|---|
|
Change in Number of Participants Who Used Acetaminophen or Other Medications for Pain
|
-1 participants
|
1 participants
|
SECONDARY outcome
Timeframe: Baseline, 3 monthsOutcome measures
| Measure |
Placebo
n=51 Participants
Placebo in capsule identical to study drug
Placebo oral capsule: Placebo 0.8 mg or 0.6 mg orally once daily for 3 months
|
Colchicine
n=49 Participants
0.6 or 0.8 mg orally once daily.
Because recent studies suggest that a dose of 0.6mg may be sufficient for chronic inflammatory suppression and may reduce the already low risk of toxicity of 0.8mg, for the remainder (second half) of the study the dosage will be switched from 0.8mg to a 0.6mg dose to allow comparison of the two doses.
Colchicine 0.8 mg or 0.6 mg orally once daily: Colchicine 0.8 mg orally once daily for 1.5 months, and then 0.6 mg once daily for the remainder of the time (1.5 months)
|
|---|---|---|
|
Change in Inflammatory Plasma Marker: Interleukin-1 Receptor Antagonist (IL-1Ra)
|
-66 pg/mL
Standard Deviation 231.9
|
-7.3 pg/mL
Standard Deviation 194
|
SECONDARY outcome
Timeframe: Baseline, 3 monthsOutcome measures
| Measure |
Placebo
n=51 Participants
Placebo in capsule identical to study drug
Placebo oral capsule: Placebo 0.8 mg or 0.6 mg orally once daily for 3 months
|
Colchicine
n=49 Participants
0.6 or 0.8 mg orally once daily.
Because recent studies suggest that a dose of 0.6mg may be sufficient for chronic inflammatory suppression and may reduce the already low risk of toxicity of 0.8mg, for the remainder (second half) of the study the dosage will be switched from 0.8mg to a 0.6mg dose to allow comparison of the two doses.
Colchicine 0.8 mg or 0.6 mg orally once daily: Colchicine 0.8 mg orally once daily for 1.5 months, and then 0.6 mg once daily for the remainder of the time (1.5 months)
|
|---|---|---|
|
Change in Inflammatory Plasma Marker: Prostaglandin E2 (PGE2)
|
100 pg/mL
Standard Deviation 586.4
|
72.4 pg/mL
Standard Deviation 737.3
|
SECONDARY outcome
Timeframe: Baseline, 3 monthsPopulation: In lieu of synovitis whose measurements proved difficult, the team relied on MSK-US-measured effusions. Only 28 and 19 participants effusion data were collected for the placebo and colchicine group, respectively.
Size of effusion is measured as millimeters
Outcome measures
| Measure |
Placebo
n=28 Participants
Placebo in capsule identical to study drug
Placebo oral capsule: Placebo 0.8 mg or 0.6 mg orally once daily for 3 months
|
Colchicine
n=19 Participants
0.6 or 0.8 mg orally once daily.
Because recent studies suggest that a dose of 0.6mg may be sufficient for chronic inflammatory suppression and may reduce the already low risk of toxicity of 0.8mg, for the remainder (second half) of the study the dosage will be switched from 0.8mg to a 0.6mg dose to allow comparison of the two doses.
Colchicine 0.8 mg or 0.6 mg orally once daily: Colchicine 0.8 mg orally once daily for 1.5 months, and then 0.6 mg once daily for the remainder of the time (1.5 months)
|
|---|---|---|
|
Change in Musculoskeletal Ultrasound (MSK-US)-Measured Effusion
|
-1.2 millimeter
Standard Deviation 2.4
|
-1.5 millimeter
Standard Deviation 3.0
|
SECONDARY outcome
Timeframe: Baseline, 3 monthsOutcome measures
| Measure |
Placebo
n=51 Participants
Placebo in capsule identical to study drug
Placebo oral capsule: Placebo 0.8 mg or 0.6 mg orally once daily for 3 months
|
Colchicine
n=49 Participants
0.6 or 0.8 mg orally once daily.
Because recent studies suggest that a dose of 0.6mg may be sufficient for chronic inflammatory suppression and may reduce the already low risk of toxicity of 0.8mg, for the remainder (second half) of the study the dosage will be switched from 0.8mg to a 0.6mg dose to allow comparison of the two doses.
Colchicine 0.8 mg or 0.6 mg orally once daily: Colchicine 0.8 mg orally once daily for 1.5 months, and then 0.6 mg once daily for the remainder of the time (1.5 months)
|
|---|---|---|
|
Change in Rates of Crystal Deposition (Urate, Calcium) on MSK-US
|
0 mg/dL
Standard Deviation 0
|
0 mg/dL
Standard Deviation 0
|
SECONDARY outcome
Timeframe: Baseline, 3 monthsOutcome measures
| Measure |
Placebo
n=51 Participants
Placebo in capsule identical to study drug
Placebo oral capsule: Placebo 0.8 mg or 0.6 mg orally once daily for 3 months
|
Colchicine
n=49 Participants
0.6 or 0.8 mg orally once daily.
Because recent studies suggest that a dose of 0.6mg may be sufficient for chronic inflammatory suppression and may reduce the already low risk of toxicity of 0.8mg, for the remainder (second half) of the study the dosage will be switched from 0.8mg to a 0.6mg dose to allow comparison of the two doses.
Colchicine 0.8 mg or 0.6 mg orally once daily: Colchicine 0.8 mg orally once daily for 1.5 months, and then 0.6 mg once daily for the remainder of the time (1.5 months)
|
|---|---|---|
|
Change in Inflammatory Plasma Marker: Highly Sensitive C-reactive Protein (hsCRP)
|
0.1 mg/L
Standard Deviation 4.1
|
-4.7 mg/L
Standard Deviation 15.6
|
SECONDARY outcome
Timeframe: Baseline, 3 monthsOutcome measures
| Measure |
Placebo
n=51 Participants
Placebo in capsule identical to study drug
Placebo oral capsule: Placebo 0.8 mg or 0.6 mg orally once daily for 3 months
|
Colchicine
n=49 Participants
0.6 or 0.8 mg orally once daily.
Because recent studies suggest that a dose of 0.6mg may be sufficient for chronic inflammatory suppression and may reduce the already low risk of toxicity of 0.8mg, for the remainder (second half) of the study the dosage will be switched from 0.8mg to a 0.6mg dose to allow comparison of the two doses.
Colchicine 0.8 mg or 0.6 mg orally once daily: Colchicine 0.8 mg orally once daily for 1.5 months, and then 0.6 mg once daily for the remainder of the time (1.5 months)
|
|---|---|---|
|
Change in Inflammatory Plasma Marker: Uric Acid
|
0.2 mg/dL
Standard Deviation 0.7
|
-0.8 mg/dL
Standard Deviation 1.0
|
Adverse Events
Placebo
Colchicine
Serious adverse events
Adverse event data not reported
Other adverse events
| Measure |
Placebo
n=51 participants at risk
Placebo in capsule identical to study drug
Placebo oral capsule: Placebo 0.8 mg or 0.6 mg orally once daily for 3 months
|
Colchicine
n=49 participants at risk
0.6 or 0.8 mg orally once daily.
Because recent studies suggest that a dose of 0.6mg may be sufficient for chronic inflammatory suppression and may reduce the already low risk of toxicity of 0.8mg, for the remainder (second half) of the study the dosage will be switched from 0.8mg to a 0.6mg dose to allow comparison of the two doses.
Colchicine 0.8 mg or 0.6 mg orally once daily: Colchicine 0.8 mg orally once daily for 1.5 months, and then 0.6 mg once daily for the remainder of the time (1.5 months)
|
|---|---|---|
|
Gastrointestinal disorders
Loose stools
|
21.6%
11/51 • 3 months
|
38.8%
19/49 • 3 months
|
|
Gastrointestinal disorders
Abdominal discomfort
|
13.7%
7/51 • 3 months
|
4.1%
2/49 • 3 months
|
|
Gastrointestinal disorders
Nausea/ Vomiting
|
9.8%
5/51 • 3 months
|
8.2%
4/49 • 3 months
|
|
General disorders
Headache
|
11.8%
6/51 • 3 months
|
20.4%
10/49 • 3 months
|
|
Musculoskeletal and connective tissue disorders
Myalgia
|
9.8%
5/51 • 3 months
|
2.0%
1/49 • 3 months
|
Additional Information
Results disclosure agreements
- Principal investigator is a sponsor employee
- Publication restrictions are in place