Trial Outcomes & Findings for An Assessment of Chronic Synovial-Based Inflammation and Its Role With Serum Urate Levels. (NCT NCT01112982)

NCT ID: NCT01112982

Last Updated: 2019-08-07

Results Overview

The primary aim of this study will be to determine the percentage of patients with known gout who have evidence of chronic ongoing synovial-based inflammatory disease, i.e. synovial pannus, in their "index joint", and determine if there is a correlation of the prevalence and severity of synovial pannus in the "index joint" with the patients' serum urate levels on the day of their MRI.

Recruitment status

COMPLETED

Study phase

PHASE4

Target enrollment

74 participants

Primary outcome timeframe

MRI and baseline uric acid level will be performed upon enrollment in the study.

Results posted on

2019-08-07

Participant Flow

Participant milestones

Participant milestones
Measure
MRI of Index Joint
All study participants: Standard demographics will be obtained including a baseline serum urate, creatinine, and hs-CRP. Study subjects will have their "index joint" determined (the joint that is most often involved with acute attacks of gout in each particular patient). A plain radiograph of the "index joint" will be obtained, as well as an MRI with and without gadolinium enhancement to assess for presence and degree synovial pannus. Magnetic Resonance Imaging: An MRI (with and without gadolinium contrast) of index joint will be performed (T1, T2, and STIR images). Plain Radiographs: Plain radiographs of "index joint" will be obtained and reviewed by two independent readers (radiologists)
Overall Study
STARTED
74
Overall Study
COMPLETED
72
Overall Study
NOT COMPLETED
2

Reasons for withdrawal

Reasons for withdrawal
Measure
MRI of Index Joint
All study participants: Standard demographics will be obtained including a baseline serum urate, creatinine, and hs-CRP. Study subjects will have their "index joint" determined (the joint that is most often involved with acute attacks of gout in each particular patient). A plain radiograph of the "index joint" will be obtained, as well as an MRI with and without gadolinium enhancement to assess for presence and degree synovial pannus. Magnetic Resonance Imaging: An MRI (with and without gadolinium contrast) of index joint will be performed (T1, T2, and STIR images). Plain Radiographs: Plain radiographs of "index joint" will be obtained and reviewed by two independent readers (radiologists)
Overall Study
Withdrawal by Subject
1
Overall Study
exceeded weight limit to complete MRI
1

Baseline Characteristics

An Assessment of Chronic Synovial-Based Inflammation and Its Role With Serum Urate Levels.

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
MRI of Index Joint
n=72 Participants
All study participants: Standard demographics will be obtained including a baseline serum urate, creatinine, and hs-CRP. Study subjects will have their "index joint" determined (the joint that is most often involved with acute attacks of gout in each particular patient). A plain radiograph of the "index joint" will be obtained, as well as an MRI with and without gadolinium enhancement to assess for presence and degree synovial pannus. Magnetic Resonance Imaging: An MRI (with and without gadolinium contrast) of index joint will be performed (T1, T2, and STIR images). Plain Radiographs: Plain radiographs of "index joint" will be obtained and reviewed by two independent readers (radiologists)
Age, Categorical
<=18 years
0 Participants
n=39 Participants
Age, Categorical
Between 18 and 65 years
67 Participants
n=39 Participants
Age, Categorical
>=65 years
5 Participants
n=39 Participants
Age, Continuous
56.4 years
n=39 Participants
Sex: Female, Male
Female
7 Participants
n=39 Participants
Sex: Female, Male
Male
65 Participants
n=39 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
9 Participants
n=39 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
60 Participants
n=39 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
3 Participants
n=39 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=39 Participants
Race (NIH/OMB)
Asian
0 Participants
n=39 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=39 Participants
Race (NIH/OMB)
Black or African American
10 Participants
n=39 Participants
Race (NIH/OMB)
White
59 Participants
n=39 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=39 Participants
Race (NIH/OMB)
Unknown or Not Reported
3 Participants
n=39 Participants
Region of Enrollment
United States
72 Participants
n=39 Participants

PRIMARY outcome

Timeframe: MRI and baseline uric acid level will be performed upon enrollment in the study.

The primary aim of this study will be to determine the percentage of patients with known gout who have evidence of chronic ongoing synovial-based inflammatory disease, i.e. synovial pannus, in their "index joint", and determine if there is a correlation of the prevalence and severity of synovial pannus in the "index joint" with the patients' serum urate levels on the day of their MRI.

Outcome measures

Outcome measures
Measure
MRI of Index Joint
n=72 Participants
All study participants: Standard demographics will be obtained including a baseline serum urate, creatinine, and hs-CRP. Study subjects will have their "index joint" determined (the joint that is most often involved with acute attacks of gout in each particular patient). A plain radiograph of the "index joint" will be obtained, as well as an MRI with and without gadolinium enhancement to assess for presence and degree synovial pannus. Magnetic Resonance Imaging: An MRI (with and without gadolinium contrast) of index joint will be performed (T1, T2, and STIR images). Plain Radiographs: Plain radiographs of "index joint" will be obtained and reviewed by two independent readers (radiologists)
Febuxostat Sub-Study
The primary endpoint of this sub-study was to determine if a nine month course of aggressive serum ULT in patients with gout significantly affects the severity of synovial pannus in the index joint as determined by comparing the baseline and month 9 MRI's using the aforementioned grading scale. Secondary endpoints included an assessment of significant change of the subjects' serum CRP and estimated Glomerular Filtration Rate (eGFR) from baseline to month 9. Other endpoints included assessing for significant change of erosive changes, intraosseous tophi, soft tissue tophi, joint effusion, bone marrow edema/lesions, and soft tissue edema on the MRI from baseline to month 9.
Number and Percentage of Participants With Evidence of Chronic Ongoing Synovial-Based Inflammatory Disease at Baseline.
63 Participants

SECONDARY outcome

Timeframe: Upon enrollment into study, and at month 9.

A sub-study in a subgroup of patients will analyze the Number and Percentage of Substudy Participants for whom the Severity of Synovial Pannus was Significantly Reduced After 9 Months of Treatment with Febuxostat (Uloric) in the "index joint" by comparing the baseline MRI with a repeat MRI of the same joint.

Outcome measures

Outcome measures
Measure
MRI of Index Joint
n=32 Participants
All study participants: Standard demographics will be obtained including a baseline serum urate, creatinine, and hs-CRP. Study subjects will have their "index joint" determined (the joint that is most often involved with acute attacks of gout in each particular patient). A plain radiograph of the "index joint" will be obtained, as well as an MRI with and without gadolinium enhancement to assess for presence and degree synovial pannus. Magnetic Resonance Imaging: An MRI (with and without gadolinium contrast) of index joint will be performed (T1, T2, and STIR images). Plain Radiographs: Plain radiographs of "index joint" will be obtained and reviewed by two independent readers (radiologists)
Febuxostat Sub-Study
The primary endpoint of this sub-study was to determine if a nine month course of aggressive serum ULT in patients with gout significantly affects the severity of synovial pannus in the index joint as determined by comparing the baseline and month 9 MRI's using the aforementioned grading scale. Secondary endpoints included an assessment of significant change of the subjects' serum CRP and estimated Glomerular Filtration Rate (eGFR) from baseline to month 9. Other endpoints included assessing for significant change of erosive changes, intraosseous tophi, soft tissue tophi, joint effusion, bone marrow edema/lesions, and soft tissue edema on the MRI from baseline to month 9.
Number and Percentage of Substudy Participants for Whom the Severity of Synovial Pannus Was Significantly Reduced After 9 Months of Treatment With Febuxostat (Uloric).
25 Participants

SECONDARY outcome

Timeframe: Upon enrollment into study

Number of Participants with Other Characteristic Findings of Gout on these MRI's. These include erosive changes, intraosseous tophi, soft tissue tophi, joint effusion, bone marrow edema, and soft tissue edema. These secondary endpoints will also be summed with patients' serum urate levels.

Outcome measures

Outcome measures
Measure
MRI of Index Joint
n=72 Participants
All study participants: Standard demographics will be obtained including a baseline serum urate, creatinine, and hs-CRP. Study subjects will have their "index joint" determined (the joint that is most often involved with acute attacks of gout in each particular patient). A plain radiograph of the "index joint" will be obtained, as well as an MRI with and without gadolinium enhancement to assess for presence and degree synovial pannus. Magnetic Resonance Imaging: An MRI (with and without gadolinium contrast) of index joint will be performed (T1, T2, and STIR images). Plain Radiographs: Plain radiographs of "index joint" will be obtained and reviewed by two independent readers (radiologists)
Febuxostat Sub-Study
The primary endpoint of this sub-study was to determine if a nine month course of aggressive serum ULT in patients with gout significantly affects the severity of synovial pannus in the index joint as determined by comparing the baseline and month 9 MRI's using the aforementioned grading scale. Secondary endpoints included an assessment of significant change of the subjects' serum CRP and estimated Glomerular Filtration Rate (eGFR) from baseline to month 9. Other endpoints included assessing for significant change of erosive changes, intraosseous tophi, soft tissue tophi, joint effusion, bone marrow edema/lesions, and soft tissue edema on the MRI from baseline to month 9.
Number of Participants With Other Characteristic Findings of Gout on MRI's Correlated With Serum Urate Levels.
Erosive Changes
31 Participants
Number of Participants With Other Characteristic Findings of Gout on MRI's Correlated With Serum Urate Levels.
Intraosseous tophi
25 Participants
Number of Participants With Other Characteristic Findings of Gout on MRI's Correlated With Serum Urate Levels.
Soft tissue tophi
11 Participants
Number of Participants With Other Characteristic Findings of Gout on MRI's Correlated With Serum Urate Levels.
Joint effusion
14 Participants
Number of Participants With Other Characteristic Findings of Gout on MRI's Correlated With Serum Urate Levels.
Bone marrow edema
40 Participants
Number of Participants With Other Characteristic Findings of Gout on MRI's Correlated With Serum Urate Levels.
Soft tissue edema
28 Participants

SECONDARY outcome

Timeframe: previous 2 years upon enrollment into study

Determine if there is a correlation between the prevalence and severity of synovial pannus in the "index joint" with the patients' mean serum urate level from the previous 2 years at baseline.

Outcome measures

Outcome measures
Measure
MRI of Index Joint
n=72 Participants
All study participants: Standard demographics will be obtained including a baseline serum urate, creatinine, and hs-CRP. Study subjects will have their "index joint" determined (the joint that is most often involved with acute attacks of gout in each particular patient). A plain radiograph of the "index joint" will be obtained, as well as an MRI with and without gadolinium enhancement to assess for presence and degree synovial pannus. Magnetic Resonance Imaging: An MRI (with and without gadolinium contrast) of index joint will be performed (T1, T2, and STIR images). Plain Radiographs: Plain radiographs of "index joint" will be obtained and reviewed by two independent readers (radiologists)
Febuxostat Sub-Study
The primary endpoint of this sub-study was to determine if a nine month course of aggressive serum ULT in patients with gout significantly affects the severity of synovial pannus in the index joint as determined by comparing the baseline and month 9 MRI's using the aforementioned grading scale. Secondary endpoints included an assessment of significant change of the subjects' serum CRP and estimated Glomerular Filtration Rate (eGFR) from baseline to month 9. Other endpoints included assessing for significant change of erosive changes, intraosseous tophi, soft tissue tophi, joint effusion, bone marrow edema/lesions, and soft tissue edema on the MRI from baseline to month 9.
Mean Serum Urate Levels for Previous 2 Years at Baseline.
7.93 mg/dL
Standard Deviation 2.13

SECONDARY outcome

Timeframe: Upon enrollment into study at screening.

Population: Severity of Synovial Pannus in the "Index Joint"

Determine if the Number of Participants Prevalence and Severity of Synovial Pannus in the "Index Joint" with the patient's serum high-sensitivity C-Reactive Protein on the same day as the Magnetic Resonance Imaging. The Magnetic Resonance Imaging will be assessed for the severity of synovial pannus, which is graded on a scale of 1 to 6 (with 6 being the most severe).

Outcome measures

Outcome measures
Measure
MRI of Index Joint
n=72 Participants
All study participants: Standard demographics will be obtained including a baseline serum urate, creatinine, and hs-CRP. Study subjects will have their "index joint" determined (the joint that is most often involved with acute attacks of gout in each particular patient). A plain radiograph of the "index joint" will be obtained, as well as an MRI with and without gadolinium enhancement to assess for presence and degree synovial pannus. Magnetic Resonance Imaging: An MRI (with and without gadolinium contrast) of index joint will be performed (T1, T2, and STIR images). Plain Radiographs: Plain radiographs of "index joint" will be obtained and reviewed by two independent readers (radiologists)
Febuxostat Sub-Study
n=25 Participants
The primary endpoint of this sub-study was to determine if a nine month course of aggressive serum ULT in patients with gout significantly affects the severity of synovial pannus in the index joint as determined by comparing the baseline and month 9 MRI's using the aforementioned grading scale. Secondary endpoints included an assessment of significant change of the subjects' serum CRP and estimated Glomerular Filtration Rate (eGFR) from baseline to month 9. Other endpoints included assessing for significant change of erosive changes, intraosseous tophi, soft tissue tophi, joint effusion, bone marrow edema/lesions, and soft tissue edema on the MRI from baseline to month 9.
The Severity of Synovial Pannus the Day of Serum High-sensitivity C-Reactive Protein and Magnetic Resonance Imaging
2.99 units on a scale
Standard Deviation 1.3
3.42 units on a scale
Standard Deviation 1.3

SECONDARY outcome

Timeframe: Upon enrollment into study

Baseline radiographs of the "index" joint will also be obtained on the same day as their MRI and assessed for the presence or absence of erosive changes, intraosseous tophi, soft tissue tophi, joint effusion, bone marrow edema, or soft tissue edema. This will be correlated with the presence and severity of synovial pannus in that same joint. The analysis will also be performed to see if there is a correlation with serum urate levels and the presence of erosions on their plain radiograph.

Outcome measures

Outcome measures
Measure
MRI of Index Joint
n=72 Participants
All study participants: Standard demographics will be obtained including a baseline serum urate, creatinine, and hs-CRP. Study subjects will have their "index joint" determined (the joint that is most often involved with acute attacks of gout in each particular patient). A plain radiograph of the "index joint" will be obtained, as well as an MRI with and without gadolinium enhancement to assess for presence and degree synovial pannus. Magnetic Resonance Imaging: An MRI (with and without gadolinium contrast) of index joint will be performed (T1, T2, and STIR images). Plain Radiographs: Plain radiographs of "index joint" will be obtained and reviewed by two independent readers (radiologists)
Febuxostat Sub-Study
The primary endpoint of this sub-study was to determine if a nine month course of aggressive serum ULT in patients with gout significantly affects the severity of synovial pannus in the index joint as determined by comparing the baseline and month 9 MRI's using the aforementioned grading scale. Secondary endpoints included an assessment of significant change of the subjects' serum CRP and estimated Glomerular Filtration Rate (eGFR) from baseline to month 9. Other endpoints included assessing for significant change of erosive changes, intraosseous tophi, soft tissue tophi, joint effusion, bone marrow edema/lesions, and soft tissue edema on the MRI from baseline to month 9.
Presence or Absence of Erosive Changes on Baseline Radiographs of the "Index" Joint Correlated With the Presence and Severity of Synovial Pannus Correlation With Serum Urate Levels and the Presence of Erosions on Their Plain Radiograph.
Erosive Changes · Presence
31 Participants
Presence or Absence of Erosive Changes on Baseline Radiographs of the "Index" Joint Correlated With the Presence and Severity of Synovial Pannus Correlation With Serum Urate Levels and the Presence of Erosions on Their Plain Radiograph.
Erosive Changes · Absence
41 Participants
Presence or Absence of Erosive Changes on Baseline Radiographs of the "Index" Joint Correlated With the Presence and Severity of Synovial Pannus Correlation With Serum Urate Levels and the Presence of Erosions on Their Plain Radiograph.
Serum urate levels ≤6.8mg/dL · Presence
24 Participants
Presence or Absence of Erosive Changes on Baseline Radiographs of the "Index" Joint Correlated With the Presence and Severity of Synovial Pannus Correlation With Serum Urate Levels and the Presence of Erosions on Their Plain Radiograph.
Serum urate levels ≤6.8mg/dL · Absence
48 Participants
Presence or Absence of Erosive Changes on Baseline Radiographs of the "Index" Joint Correlated With the Presence and Severity of Synovial Pannus Correlation With Serum Urate Levels and the Presence of Erosions on Their Plain Radiograph.
Intraosseous Tophi · Presence
25 Participants
Presence or Absence of Erosive Changes on Baseline Radiographs of the "Index" Joint Correlated With the Presence and Severity of Synovial Pannus Correlation With Serum Urate Levels and the Presence of Erosions on Their Plain Radiograph.
Intraosseous Tophi · Absence
47 Participants
Presence or Absence of Erosive Changes on Baseline Radiographs of the "Index" Joint Correlated With the Presence and Severity of Synovial Pannus Correlation With Serum Urate Levels and the Presence of Erosions on Their Plain Radiograph.
Soft Tissue Tophi · Presence
11 Participants
Presence or Absence of Erosive Changes on Baseline Radiographs of the "Index" Joint Correlated With the Presence and Severity of Synovial Pannus Correlation With Serum Urate Levels and the Presence of Erosions on Their Plain Radiograph.
Soft Tissue Tophi · Absence
61 Participants
Presence or Absence of Erosive Changes on Baseline Radiographs of the "Index" Joint Correlated With the Presence and Severity of Synovial Pannus Correlation With Serum Urate Levels and the Presence of Erosions on Their Plain Radiograph.
Joint Effusion · Presence
14 Participants
Presence or Absence of Erosive Changes on Baseline Radiographs of the "Index" Joint Correlated With the Presence and Severity of Synovial Pannus Correlation With Serum Urate Levels and the Presence of Erosions on Their Plain Radiograph.
Joint Effusion · Absence
58 Participants
Presence or Absence of Erosive Changes on Baseline Radiographs of the "Index" Joint Correlated With the Presence and Severity of Synovial Pannus Correlation With Serum Urate Levels and the Presence of Erosions on Their Plain Radiograph.
Bone Marrow Edema · Presence
40 Participants
Presence or Absence of Erosive Changes on Baseline Radiographs of the "Index" Joint Correlated With the Presence and Severity of Synovial Pannus Correlation With Serum Urate Levels and the Presence of Erosions on Their Plain Radiograph.
Bone Marrow Edema · Absence
32 Participants
Presence or Absence of Erosive Changes on Baseline Radiographs of the "Index" Joint Correlated With the Presence and Severity of Synovial Pannus Correlation With Serum Urate Levels and the Presence of Erosions on Their Plain Radiograph.
Soft Tissue Edema · Presence
28 Participants
Presence or Absence of Erosive Changes on Baseline Radiographs of the "Index" Joint Correlated With the Presence and Severity of Synovial Pannus Correlation With Serum Urate Levels and the Presence of Erosions on Their Plain Radiograph.
Soft Tissue Edema · Absence
44 Participants

SECONDARY outcome

Timeframe: Upon enrollment into study at screening.

Population: Serum High-Sensitivity C-Reactive Protein

The concentration of serum high-sensitivity C-Reactive Protein at enrollment.

Outcome measures

Outcome measures
Measure
MRI of Index Joint
n=72 Participants
All study participants: Standard demographics will be obtained including a baseline serum urate, creatinine, and hs-CRP. Study subjects will have their "index joint" determined (the joint that is most often involved with acute attacks of gout in each particular patient). A plain radiograph of the "index joint" will be obtained, as well as an MRI with and without gadolinium enhancement to assess for presence and degree synovial pannus. Magnetic Resonance Imaging: An MRI (with and without gadolinium contrast) of index joint will be performed (T1, T2, and STIR images). Plain Radiographs: Plain radiographs of "index joint" will be obtained and reviewed by two independent readers (radiologists)
Febuxostat Sub-Study
n=25 Participants
The primary endpoint of this sub-study was to determine if a nine month course of aggressive serum ULT in patients with gout significantly affects the severity of synovial pannus in the index joint as determined by comparing the baseline and month 9 MRI's using the aforementioned grading scale. Secondary endpoints included an assessment of significant change of the subjects' serum CRP and estimated Glomerular Filtration Rate (eGFR) from baseline to month 9. Other endpoints included assessing for significant change of erosive changes, intraosseous tophi, soft tissue tophi, joint effusion, bone marrow edema/lesions, and soft tissue edema on the MRI from baseline to month 9.
High-sensitivity C-Reactive Protein Concentrations
0.52 mg/dL
Standard Deviation 0.84
0.37 mg/dL
Standard Deviation 0.4

Adverse Events

MRI of Index Joint

Serious events: 1 serious events
Other events: 8 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
MRI of Index Joint
n=72 participants at risk
All study participants: Standard demographics will be obtained including a baseline serum urate, creatinine, and hs-CRP. Study subjects will have their "index joint" determined (the joint that is most often involved with acute attacks of gout in each particular patient). A plain radiograph of the "index joint" will be obtained, as well as an MRI with and without gadolinium enhancement to assess for presence and degree synovial pannus. Magnetic Resonance Imaging: An MRI (with and without gadolinium contrast) of index joint will be performed (T1, T2, and STIR images). Plain Radiographs: Plain radiographs of "index joint" will be obtained and reviewed by two independent readers (radiologists)
Cardiac disorders
exacerbation of congestive heart failure
1.4%
1/72 • Number of events 1 • At screening, baseline, week 2, month 1, month 3, month 6, and month 9 adverse events were collected on 72 study participants.
All-Cause Mortality, Serious, and Other (Not Including Serious) Adverse Events were monitored/assessed.

Other adverse events

Other adverse events
Measure
MRI of Index Joint
n=72 participants at risk
All study participants: Standard demographics will be obtained including a baseline serum urate, creatinine, and hs-CRP. Study subjects will have their "index joint" determined (the joint that is most often involved with acute attacks of gout in each particular patient). A plain radiograph of the "index joint" will be obtained, as well as an MRI with and without gadolinium enhancement to assess for presence and degree synovial pannus. Magnetic Resonance Imaging: An MRI (with and without gadolinium contrast) of index joint will be performed (T1, T2, and STIR images). Plain Radiographs: Plain radiographs of "index joint" will be obtained and reviewed by two independent readers (radiologists)
Hepatobiliary disorders
increased liver function tests
11.1%
8/72 • Number of events 8 • At screening, baseline, week 2, month 1, month 3, month 6, and month 9 adverse events were collected on 72 study participants.
All-Cause Mortality, Serious, and Other (Not Including Serious) Adverse Events were monitored/assessed.
Cardiac disorders
thrombocytopenia
1.4%
1/72 • Number of events 1 • At screening, baseline, week 2, month 1, month 3, month 6, and month 9 adverse events were collected on 72 study participants.
All-Cause Mortality, Serious, and Other (Not Including Serious) Adverse Events were monitored/assessed.
Gastrointestinal disorders
mild nausea
2.8%
2/72 • Number of events 2 • At screening, baseline, week 2, month 1, month 3, month 6, and month 9 adverse events were collected on 72 study participants.
All-Cause Mortality, Serious, and Other (Not Including Serious) Adverse Events were monitored/assessed.

Additional Information

John Carter, M.D

University of South Florida

Phone: 813-974-2473

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place