E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
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E.1.1.1 | Medical condition in easily understood language |
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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 demonstrate the superiority in efficacy of abatacept compared with adalimumab, both on background MTX, in achieving clinical response (ACR50) at Week 24, in early, seropositive (RF+ and ACPA+) RA patients with the SE HLA Class II risk alleles (ie, SE+). |
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E.2.2 | Secondary objectives of the trial |
To compare the efficacy of abatacept with adalimumab, both on background MTX in achieving:
- clinical remission criteria (DAS28-CRP remission) at Week 24 in early, seropositive RA patients with the SE HLA Class II risk alleles (ie, SE+).
- clinical response (ACR50) at Week 24 in the whole study population of early, seropositive RA patients.
- clinical remission criteria (CDAI remission) at Week 24 in early, seropositive RA patients with the SE HLA Class II risk alleles (ie, SE+).
- improvement in pain at Week 24 in early, seropositive RA patients with the SE HLA Class II risk alleles (ie, SE+).
To determine:
- the efficacy over time by treatment in early, seropositive RA patients (SE+ subset and whole population).
- the improvement in health-related quality of life over time by treatment in early, seropositive RA patients (SE+ subset and whole population). |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
- Females, ages ≥ 18 years or local age of majority.
- Males, ages ≥ 18 years or local age of majority.
- Participants have early RA, defined as symptoms of RA that started ≤ 12 months prior to screening and satisfied the ACR/EULAR 2010 criteria for the classification of RA at some point during the 12-month period.
- Participants will have the HLA-DRB1 alleles genotyped during screening and will be identified as carrying at least 1 copy of the SE alleles or not. No greater than 25% of randomized participants may be SE negative.
- Participants must be naive to any targeted (biologic or nonbiologic) DMARDs, conventional synthetic DMARDs other than MTX, investigational therapies for RA.
- Participants must have been treated with MTX for at least 12 weeks, with a stable dose of oral or parenteral MTX for at least 4 weeks prior to randomization.
- Participants have an anti-CCP-2 test that is > 3× ULN and are positive for RF according to central lab testing during screening.
- Participants must have at least a DAS28-CRP ≥ 3.2 at screening.
- Participants must have currently at least 3 tender and at least 3 swollen joints (excluding distal interphalangeals) at screening and at randomization.
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E.4 | Principal exclusion criteria |
- Women who are breastfeeding.
- Participants with autoimmune disease other than RA or currently active fibromyalgia.
- Prior history of or current inflammatory joint disease other than RA.
- Participants at risk for TB infection.
- Participants with recent acute infection. In the case of prior SARS-CoV-2 infection within 30 days prior to enrollment, symptoms must have completely resolved with no clinically significant sequelae that would indicate a higher risk of participation in the study.
- Participants with history of primary immunodeficiency.
- Participants who have received any live vaccines within 3 months of the study drug administration.
- Participants who have received live attenuated or replication-competent vector SARS-CoV-2 vaccines within 3 months of study enrollment.
- Participants for whom 5 or more joints cannot be assessed for tenderness or swelling (ie, due to surgery, fusion, amputation, etc).
- Participants who have had previous exposure to abatacept or adalimumab.
- Participants who have received an IM, IV, or intra-articular administration of a corticosteroid within 4 weeks prior to randomization.
- Hepatitis B surface antigen (HBsAg)-positive, or hepatitis B core antibody (HBcAb) positive participants with detectable hepatitis B viral deoxyribonucleic acid (DNA).
- Hepatitis C antibody (HcAb)-positive participants with detectable hepatitis C viral RNA.
- History of certain types of infections |
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E.5 End points |
E.5.1 | Primary end point(s) |
Proportion of SE+ participants meeting ACR50 response at Week 24 |
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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) |
1. Proportion of SE+ participants achieving DAS28-CRP remission (DAS28-CRP < 2.6) at Week 24
2. Proportion of whole study population participants meeting ACR50 response at Week 24
3. Proportion of SE+ participants achieving CDAI remission (CDAI ≤ 2.8) at Week 24
4. Mean change from baseline in SE+ participant-reported pain (VAS) at Week 24
5. Proportion of SE+ subset and whole population achieving ACR20/50/70 responses, DAS remission, CDAI remission, SDAI remission over the SBTP and OLTP; mean changes from baseline in DAS28-CRP, CDAI, SDAI over the SBTP and OLTP; mean changes from baseline in the 7 ACR core components over the SBTP and OLTP
6. Mean change from baseline in SF-36 in SE+ subset and whole population at Week 24 and Week 104 (4 physical and 4 mental subscales and the physical component and mental component summary) |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
1-4. At Week 24
5. Over the SBTP and OLTP
6. At Week 24 and Week 104 |
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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 | Yes |
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) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
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 | No |
E.8.1.3 | Single blind | Yes |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
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) | Yes |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
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
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 3 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 27 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Australia |
Japan |
Mexico |
Taiwan |
United States |
France |
Germany |
Italy |
Netherlands |
Poland |
Spain |
Sweden |
Switzerland |
United Kingdom |
Czechia |
Argentina |
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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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End of trial is defined as last visit for the last participant. |
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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 | 6 |
E.8.9.1 | In the Member State concerned days | 21 |
E.8.9.2 | In all countries concerned by the trial years | 3 |
E.8.9.2 | In all countries concerned by the trial months | 6 |
E.8.9.2 | In all countries concerned by the trial days | 22 |