NCT02451748

IL-7 and IL-7R Expression in RA Patients With Active vs. Inactive Disease Treated With DMARD or CIMZIA

IL-7 and IL-7R Expression in Peripheral Blood Mononuclear Cells, Peripheral Blood Monocytes or Differentiated Macrophages of Rheumatoid Arthritis Patients With Active vs. Inactive Disease Treated With DMARD and/or CIMZIA

• Status: Completed
• Phase: Phase 4
• Study type: Interventional
• Enrollment: 32 (actual)
• Sponsor: University of Illinois at Chicago · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The purpose of the study is to better understand the factors present in the cells of inflamed joints of patients with arthritis that may cause rheumatoid arthritis. Knowledge gained from this study may lead to new and better therapies for arthritis.

Detailed description

Blood samples will be collected from patients that have been diagnosed with RA based on ACR classification criteria. The study will include 200 donors. The total number of subjects are divided into two groups to yield a power of 95% at a type I error 5% level \[determined based on the preliminary data\]. In the first group, 200 donors will be treated with methotrexate, plaquenil and/or prednisone (Disease modifying anti rheumatic drugs; DMARDs) that either achieve remission (Disease activity score, DAS28\<2.6) or do not achieve remission (DAS28\>2.6). 50 donor will be utilized as they respond to DMARDs and achieve remission (DAS28\<2.6) and 150 donors that do not respond to DMARDs will be transferred to second group. In the second group, 150 donors will be treated with methotrexate, plaquenil and/or prednisone and Cimzia® (provided to us by UCB). In the first group of patients, blood samples will be obtained from RA patients treated with Disease modifying anti rheumatic drugs (DMARDs) such as methotrexate, plaquenil and/or prednisone that achieve remission (DAS28\<2.6). The patients that achieve remission (DAS28\<2.6), blood will only be taken once at the patients routine visit. The second group will consist of RA patients that did not respond to "DMARDs". These patients will further receive (DMARDs) such as methotrexate, plaquenil and/or prednisone as well as Cimzia® (provided to us by UCB) free of charge. Cimzia® is a FDA approved drug and is a standard of care. Blood samples will be obtained from the patients treated with DMARDs including methotrexate, plaquenil, and/or prednisone and Cimzia® (provided to us by UCB) that have inactive remission (DAS28\<2.6). In this group, blood samples will be collected onset of the study as well as 3 and 6 months after treatment with Cimzia at patient's visit through our collaboration with the aforementioned rheumatologists. Patients receiving intra-articular steroid injections will be excluded from the study. PB mononuclear cells will be isolated from RA whole blood and drawn into Blood collection tubes and isolated by Histopaque gradient centrifugation. Monocytes will be isolated from RA PB mononuclear cells by negative selection (as shown in the preliminary data) and half of the monocytes will be differentiated to macrophages for 7 days. The expression levels for IL-7 and IL-7R will be determined by real-time reverse transcription polymerase chain reaction (RT-PCR) and flow cytometry analysis. In our statistical analysis, we will first perform a stratified analysis to evaluate the differential expression levels in RA patients with active and inactive disease, controlling for the type of treatment. Data analysis will be performed in collaboration with an UIC Center for Clinical and Translational Science statistician. Specifically, we will perform the comparison of IL-7 and IL-7R expression among RA patients with active (DAS28\>2.6) vs. inactive disease (DAS28\<2.6) for DMARDs group (group 1). We will then perform a similar comparison for the DMARDs and Cimzia® therapy group (group 2). The stratified analysis can adjust for the potential confounding effect of treatment received and allows for the detection of the potential differential relationships between expression levels of IL-7 or IL-7R and disease status. We will also perform a pooled regression analysis in which the expression logarithm of IL-7 or IL-7R from patients is regressed on the treatment group indicator \[DMARDs (group 1) versus on DMARDs plus Cimzia® therapy (group 2)\] and disease status (active or inactive disease) which would demonstrate the interaction between treatment groups and disease activity. Such an analysis pools subjects from two treatment groups together and can therefore increase the sample size, and hence potentially the power of detecting the relationships between biomarkers and disease status. The RA samples will be collected over a 2 year period and the data will be analyzed in the last year of the proposal.

Conditions

• Rheumatoid Arthritis

Interventions

Type	Name	Description
OTHER	Lab Work	Lab work to measure IL-7 and IL-7R
DRUG	Certolizumab pegol (CDP870, tradename Cimzia)(prefilled syringes at the dose of 200mg)	Certolizumab pegol (CDP870, tradename Cimzia) or is provided in prefilled syringes at the dose of 200mg. Patients received 2x200mg at weeks 0, 2 and 4. Additionally a maintenance dose of 200mg is given every 2 weeks. Treatment is performed through subcutaneous injection.
DRUG	Certolizumab pegol (CDP870, tradename Cimzia)	rtolizumab pegol (CDP870, tradename Cimzia) or is provided in prefilled syringes at the dose of 200mg. Patients received 2x200mg at weeks 0, 2 and 4. Additionally a maintenance dose of 200mg is given every 2 weeks. Treatment is performed through subcutaneous injection.
DRUG	Hydroxychloroquine	some patients are on 400mg/day of hydroxychloroquine.
DRUG	Sulfasalazine	some patients are on 300 mg/day and some patients are on 1000 mg/day dose of sulfasalazine
DRUG	Medrol	some patients are on 8mg/day of medrol
DRUG	Prednisone	some patients are on 10mg /day, some patients are on 20 mg/day, some patients are on 2.5 mg/day, some patients are on 30 mg/day, and some patients are on 5 mg/day of prednisone
DRUG	Triamcinolone	some patients are on Triamcinolone 40-80mg IM monthly (received 40mg dose 1 week before blood draw, off enbrel 50mg weekly and SSZ 1000mg bid for \~ 3 months) some patients are on Triamcinolone 40mg IM monthly
DRUG	Naproxen	some patients are on 1000 mg/day of naproxen
DRUG	Leflunomide	some patients are on 20mg/day of leflunomide
DRUG	Methotrexate	some patients are on 20mg weekly, some patients are on 25mg weekly, some patients are on 17.5 mg, some patients are on 15 mg weekly, some patients are on 7.5 mg weekly, and some patients are on 15 mg weekly dose of methotrexate
DRUG	humira	some patients are on Humira 40mg q2weeks

Timeline

• Start date: 2015-08-01
• Primary completion: 2017-09-01
• Completion: 2017-12-01
• First posted: 2015-05-22
• Last updated: 2024-07-10
• Results posted: 2024-07-10

Locations

1 site across 1 country: United States