Ticagrelor in Methotrexate-Resistant Rheumatoid Arthritis
试验速览
- 阶段
- 4 期
- 状态
- 已完成
- 入组人数
- 9
- 试验地点
- 1
- 主要终点
- Disease Activity Score for 28-joint Counts (DAS28)
研究概览
简要总结
This is an open label study to assess the improvement in the Disease Activity Score for 28-joint counts (DAS28) with ticagrelor given at 90 mg twice daily in patients with RA who have active disease despite MTX therapy (as defined by the inclusion/exclusion criteria). There will also be a cross sectional analysis of baseline platelet activity in subjects with rheumatoid arthritis and osteoarthritis. Subjects in the OA cohort will not receive any study medication, and will only have one study visit.
Patients will receive 90 mg ticagrelor orally bid. The patients will receive drug for 30-days. Methotrexate dose will remain stable throughout the study duration.
详细描述
The two main goals of this study are to demonstrate the heightened cardiovascular risk in RA by comparing platelet activity, inflammation and endothelial function in baseline rheumatoid arthritis versus age- and sex-matched patients with osteoarthritis; and 2) to demonstrate the effect of ticagrelor in rheumatoid arthritis by the pre- and post- measures of clinical RA severity, platelet activity, inflammation and endothelial function in rheumatoid arthritis before and after ticagrelor therapy.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- 未提供
排除标准
- •History of sensitivity to study medications or any of their excipients
- •Previous intolerance to MTX
- •Current treatment with antiplatelet therapy
- •Absolute indication for anti-platelet therapy
- •Need for chronic oral anticoagulant therapy
- •Severe hepatic impairment (eg, ascites and/or clinical signs of coagulopathy)
- •Renal failure (eGFR <30 or requiring dialysis)
- •A known bleeding diathesis, hemostatic or coagulation disorder, or prior major bleeding
- •Prior stroke
- •Active pathological bleeding
- •History of intracranial haemorrhage
- •Life expectancy <12 months based on investigator's judgement
- •Patients considered to be at risk of bradycardic events (e.g., known sick sinus syndrome or second or third degree atrioventricular [AV)] block) unless already treated with a permanent pacemaker
- •Anemia (hematocrit < 27%)
- •Platelet count < 100,000/ml
- •Concomitant use of strong CYP 3A inhibitors or inducers
- •History of thrombocytopenia or neutropenia
- •Pregnant or nursing women, or females with a positive pregnancy test at screening
- •Females of child bearing potential not using acceptable method of birth control prior to or during study
- •Concern for inability of the patient to comply with study procedures and/or follow up (eg, alcohol or drug abuse)
- •History of sensitivity to study medications or any of their excipients
- •Current treatment with antiplatelet therapy
- •Absolute indication for anti-platelet therapy
- •Need for chronic oral anticoagulant therapy
- •Severe hepatic impairment (eg, ascites and/or clinical signs of coagulopathy)
- •Renal failure (eGFR <30 or requiring dialysis)
- •A known bleeding diathesis, hemostatic or coagulation disorder, or prior major bleeding
- •Prior stroke
- •Active pathological bleeding
- •History of intracranial haemorrhage
- •Life expectancy <12 months based on investigator's judgement
- •Anemia (hematocrit < 27%)
- •Platelet count < 100,000/ml
- •History of thrombocytopenia or neutropenia
- •Pregnant or nursing women, or females with a positive pregnancy test at screening
- •Females of child bearing potential not using acceptable method of birth control prior to or during study
- •Concern for inability of the patient to comply with study procedures and/or follow up (eg, alcohol or drug abuse)
研究组 & 干预措施
Rheumatoid Arthritis
-Receiving Methotrexate at stable doses of 10 to 25 mg weekly for at least 12 weeks
干预措施: Ticagrelor (Drug)
Rheumatoid Arthritis
-Receiving Methotrexate at stable doses of 10 to 25 mg weekly for at least 12 weeks
干预措施: MTX therapy (Drug)
Osteoarthritis
-Diagnosis of osteoarthritis made by physician.
干预措施: MTX therapy (Drug)
结局指标
主要结局
Disease Activity Score for 28-joint Counts (DAS28)
时间窗: 30 Days
The DAS28 is a composite score derived from 4 of these measures. This '28' version is a simplification of the original DAS score, which requires 44 joints to be counted. Other versions of the DAS28 allow the CRP to be used instead of the ESR, or the omission of either. To calculate the DAS28 your rheumatologist or specialist nurse will:- count the number of swollen joints (out of the 28), count the number of tender joints (out of the 28), take blood to measure the erythrocyte sedimentation rate (ESR) or C reactive protein (CRP), ask you (the patient) to make a 'global assessment of health' (indicated by marking a 10 cm line between very good and very bad). These results are then fed into a complex mathematical formula to produce the overall disease activity score. A DAS28 of greater than 5.1 implies active disease, less than 3.2 low disease activity, and less than 2.6 remission. The total scale range is from 2 to 10, with higher scores indicating more disease activity.
次要结局
- Visual Analog Scale Disease Activity(30 Days)
- Change in Brachial Artery Diameter(Baseline, 30 Days)