E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Active rheumatoid arthritis with ACPA antibodies failing methotrexate |
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E.1.1.1 | Medical condition in easily understood language |
Active rheumatoid arthritis showing anti-citrullinated protein antiboidies and without response to methotrexate |
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E.1.1.2 | Therapeutic area | Diseases [C] - Immune System Diseases [C20] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 23.1 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10039073 |
E.1.2 | Term | Rheumatoid arthritis |
E.1.2 | System Organ Class | 10028395 - Musculoskeletal and connective tissue disorders |
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E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To evaluate the effect of a sequential Rituximab/Abatacept treatment on auto-antibody production and thereby determine its potential to lower ACPA levels and to induce a potential seroconversion and thus an immunological remission |
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E.2.2 | Secondary objectives of the trial |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
• Subject must be able to understand and communicate with the investigator and comply with the requirements of the study, must give a written and signed and dated informed consent before any study assessment is performed
• Male or non-pregnant, non-lactating female subjects at least 18 years of age
• Able to adhere to the study visits and protocol
• Satisfy the ACR-EULAR 2010 classification criteria of Rheumatoid Arthritis at time point of diagnosis
• SDAI > 11 at screening
• ACPA positive (anti CCP2 antibody compulsory at screening) (+/- rheumatoid factor)
• Completed vaccination for pneumococcus pneumoniae according to local guidelines at Baseline
• Inadequate treatment response with highest tolerated dose after 3 months therapy and/or intolerance to cDMARDs specifically Methotrexate, Sulfasalzine, Hydroxychloroquine and Leflonumide or bDMARDs specifically TNF-alpha inhibitors or IL-6 receptor blockers.
• Subjects who have previously been treated with other DMARDs will be allowed entry into study after appropriate wash-out period prior to baseline:
o Etanercept: 4 weeks or longer
o Infliximab: 8 weeks or longer
o Adalimumab: 10 weeks or longer
o Golimumab: 8 weeks or longer
o Certolizumab: 8 weeks or longer
o Tocilizumab: 8 weeks or longer
o Baricitinib: 1 week or longer
o Secukinumab: 20 weeks or longer
For all other DMARDs not mentioned above the wash-out period should be five times the half-life of the DMARD concerned.
• Sulfasalazin, Hydroxychloroquine and Leflunomide must be stopped during screening phase and be replaced by Methotrexate (if possible).
•As csDMARD: only simultaneous therapy with Methotrexate allowed if tolerated
• Maximum Glucocortidoiddose at Baseline: 20mg Prednisolone equivalent daily
• JC-Virus DNA in Serum negative at screening |
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E.4 | Principal exclusion criteria |
• Ongoing or previously treatment with Abatacept or Rituximab
• Hypersensitivity to the active substance, mouse proteins (Rituximab), chinese hamster ovary cells (Abatacept) or other components
• Contraindication for Rituximab or Abatacept treatment according to their SmPCs
• Use of any other biologic immunomodulatory agent (monoclonal antibody) except insulin.
• Active ongoing inflammatory diseases other than RA that might confound the evaluation of the benefit of the therapy (including SLE, PSS, MCTD, SpA, Behcet disease, vasculitis or autoimmune hepatitis)
• Active systemic infections during the last two weeks prior to baseline (exception: common cold)
• History of ongoing, chronic or recurrent infectious disease or evidence of tuberculosis infection as defined by a positive QuantiFERON TB-Gold test. If presence of latent tuberculosis is established then treatment according to local country guidelines must have been initiated but patient cannot take part in the study.
• Chest X-ray or chest MRI with evidence of ongoing infectious or malignant process, obtained within 3 months prior to screening and evaluated by a qualified physician
• Known active or past infection with hepatitis B or hepatitis C at screening or baseline as defined by Antibody positivity and/or positive DNA/RNA levels of hepatitis B/C
• History of lymphoproliferative disease or any known malignancy or history of malignancy of any organ system within the past 5 years (except for basal cell carcinoma or actinic keratosis that have been treated with no evidence of recurrence in the past 3 months, carcinoma in situ of the cervix or non-invasive malignant colon polyps that have been removed)
• Uncontrolled severe concomitant disease (including diabetes with plasma glucose >11.1 mmol/l rsp. 200 mg/dl, heart insufficiency >= NYHA III, COPD with severity >= GOLD 3, asthma according to GINA classification >= step 3)
• Patients with weakened immune system defined as diagnosis of CVID, HIV and or total IgG levels lower than 600 mg/dl)
• Requirement for immunization with live vaccine during the study period or within 4 weeks preceding baseline.
• Underlying metabolic, hematologic, renal, hepatic, pulmonary, neurologic, endocrine, cardiac, infectious or gastrointestinal conditions which in the opinion of the investigator immunocompromises the subject and/or places the subject at unacceptable risk for participation in an immunomodulatory therapy
• Evidence of severe renal dysfunction defined as eGFR < 30 ml/min/1,73 m2 (calculated using the MDRD formula) at screening (Visit 1)
• History of clinically significant liver disease or liver injury as indicated by abnormal liver function tests such as SGOT (AST) ≥ 3 fold upper limit of normal (ULN), SGPT (ALT) ) ≥ 3 fold ULN, alkaline phosphatase ≥ 3 fold ULN, or serum bilirubin ≥ 2 fold ULN .
• Screening total WBC count <3,000/µL, or platelets <100,000/µL or neutrophils <1,500/µL or haemoglobin <8.5 g/dL (85g/L)
• Subjects taking high potency opioid analgesics (e.g. methadone, hydromorphone, morphine)
• Have a history of alcohol or substance abuse within the preceding 6 months that, in the opinion of the investigator, may increase the risks associated with study participation or study agent administration, or may interfere with interpretation of results
• Prior history of suicide attempt at any time in the subject's life time prior to screening and baseline, or major psychiatric illness requiring hospitalization within the last 3 years
• Planned or ongoing pregnancy status or breast-feeding
• Women of child-bearing potential, defined as all women physiologically capable of becoming pregnant, unwilling to use effective contraception during the study and for a minimum of 12 months after stopping treatment. Effective contraception is defined as either:
o Barrier method: Condom or Occlusive cap (diaphragm or cervical/vault caps) with spermicide (where available). Spermicides alone are not a barrier method of contraception and should not be used alone
o The following methods are considered more effective than the barrier method and are also acceptable:
o Total abstinence: When this is in line with the preferred and usual lifestyle of the subject [Periodic abstinence (e.g. calendar, ovulation, symptothermal, post-ovulation methods) and withdrawal are not acceptable methods of contraception]
o Female sterilization: have had a surgical bilateral oophorectomy (with or without hysterectomy) or tubal ligation at least six weeks before taking study treatment. In case of oophorectomy alone, only when the reproductive status of the woman has been confirmed by follow up hormone level assessment
• Participation in an interventional clinical trial with an IMP within the last 4 weeks prior to screening.
• Patients who possibly are dependent on the Sponsor, the Principal Investigator or Investigator (e.g. family members)
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E.5 End points |
E.5.1 | Primary end point(s) |
• Proportion of anti CCP2 antibody seroconversions in anti-CCP2-positive RA patients at week52 (defined as lowering of anti-CCP2 antibodies below 5RE/ml) |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
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E.5.2 | Secondary end point(s) |
• Change in anti CCP2 antibody levels (RE/ml)
• Change in anti CCP2 antibodies Levels (RE/ml) in HLA-defined subgroups
• Change in total IgG, IgA, IgM and IgG subclasses
• Glycosylation profile of total IgG and ACPA
• Change in B cell numbers
• Change in numbers of CCP2-specific B-cells
• SDAI, DAS28 CRP/ESR, CDAI
• Number of patients in DAS28 CRP/ESR; CDAI, SDAI, Boolean remission at week 52
• ACR 20, 50, 70 response at week 52
• Number of flares in each group between week 8 and week 52: Flare as defined as loss of remission or low-disease activity (measured by a composite score (SDAI/DAS28 CRP or ESR)) lasting longer than on a daily variation of complaints. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Screening, Baseline, Week 8, Week 12, Week 24, Week 36, Week 48, Week 52 |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | No |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | Yes |
E.8.2.3.1 | Comparator description |
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E.8.2.4 | Number of treatment arms in the trial | 2 |
E.8.3 |
The trial involves single site in the Member State concerned
| Yes |
E.8.4 | The trial involves multiple sites in the Member State concerned | No |
E.8.5 | The trial involves multiple Member States | No |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | No |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 3 |
E.8.9.1 | In the Member State concerned months | 0 |
E.8.9.1 | In the Member State concerned days | 0 |