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Rheumatoid ArthritisPhase 4NCT03505008

Evaluation of the Optimal MTX Dose as an Add-on Therapy to Adalimumab for RA Patients in Japan, South Korea and Taiwan

A Phase 4 study testing Methotrexate and Adalimumab in people with Rheumatoid Arthritis, run by Keio University at 24 sites in 3 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This study will be conducted in Japan, South Korea and Taiwan to evaluate the optimal dosage of methotrexate (MTX) as an add-on therapy to adalimumab (ADA) in participants with rheumatoid arthritis (RA) who have not achieved remission by MTX monotherapy. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Rheumatoid Arthritis
What is being tested?
Methotrexate and Adalimumab
Could I receive a placebo?
No, everyone receives an active treatment
How many people
300 participants
Where
24 sitesin 3 countries
Study dates
18 Apr 2018to 11 May 2021
Phase
Phase 4
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patients aged ≥18 years (≥20 years in Taiwan) at the time of informed consent
  • Patients who meet the 1987 revised ACR criteria or 2010 ACR/EULAR criteria
  • Patients who have RA within 2 years from initial diagnosis to informed consent
  • Patients who were previously untreated with MTX, JAK inhibitor, or bDMARDs
  • Patients who have disease activity of SDAI >11 at screening
  • Patients who are no need for concomitant use of DMARDs other than hydroxychloroquine (only in South Korea and Taiwan) and study drugs during the study as judged by principal investigator/sub-investigator at screening
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  • Patients who are no need for concomitant use of corticoid steroid equivalent to >10 mg/day prednisolone during the study as judged by principal investigator/sub-investigator at screening.
  • Female of child-bearing potential who can use appropriate contraceptive during the study, female in whom time from menopause to informed consent is ≥1 year, or female of no child-bearing potential through sterilization (bilateral tubal ligation, bilateral ovariectomy or hysterectomy, etc.)
  • Virile male who can use appropriate contraceptive during the study
  • Patients who can adequately understand this study procedures, and voluntarily consent in writing to take part in this study (consent of a legally-acceptable representative is also required for patients aged <20 years in Japan and aged <19 years in South Korea)

Who cannot join

  • Patients who currently have a malignant tumor, except for non-melanoma forms of skin cancer limited within epidermis, and uterine cervix cancer limited within epidermis
  • Patients who have serious infections such as sepsis
  • Patients who have active tuberculosis
  • Patients who have a history or current complication of demyelinating disease such as multiple sclerosis
  • Patients who have congestive heart failure
  • Pregnant female, or female who intend to conceive during the study period
Show all 13Show fewer
  • Patients who have bone marrow depression and whom investigator considered ineligible
  • Patients who have chronic liver disease and whom investigator considered ineligible, and who is positive for HBs antigen
  • Patients who have nephropathy and whom investigator considered ineligible
  • Lactating female
  • Patients who have pleural effusion or ascites
  • Patients with a known hypersensitivity to MTX or ADA
  • Patients otherwise whom principal investigator/sub-investigator considered medically ineligible to participate in the study

Trial locations and contacts

24 sites in 3 countries.

24 sites in 3 countries

Japan12 sites
  • Fujita Health University Hospital

    Aichi

  • Chiba University Hospital

    Chiba

  • Hiroshima University Hospital

    Hiroshima

  • Kawasaki Municipal Hospital

    Kanagawa

  • Tokai University Hospital

    Kanagawa

  • Tohoku University Hospital

    Miyagi

  • Nagoya University Hospital

    Nagoya

  • Seirei Hamamatsu General Hospital

    Shizuoka

  • Keio University Hospital

    Tokyo

  • National Hospital Organization Tokyo Medical Center

    Tokyo

  • Nippon Medical School Hospital

    Tokyo

  • Toho University Ohashi Medical Center

    Tokyo

Other trials in Japan

South Korea6 sites
  • Chungbuk National University Hospital

    Cheongju-si

  • Chungnam National University Hospital

    Daejeon

  • Gachon University Gil Medical Center

    Incheon

  • Seoul National University Bundang Hospital

    Seongnam

  • Seoul Metropolitan Government Seoul National University Boramae Medical Center

    Seoul

  • The Catholic University of Korea, Seoul St. Mary's Hospital

    Seoul

Other trials in South Korea

Taiwan6 sites
  • Chang Gung Medical Foundation, Kaohsiung Chang Gung Memorial Hospital

    Kaohsiung City

  • Kaohsiung Medical University Chung-Ho Memorial Hospital

    Kaohsiung City

  • China Medical University Hospital

    Taichung

  • National Cheng Kung University Hospital

    Tainan

  • National Taiwan University Hospital

    Taipei

  • Chang Gung Medical Foundation, Linkou Chang Gung Memorial Hospital

    Taoyuan

Other trials in Taiwan

About this study

Official title: MIRACLE (Methotrexate Inadequate Response Patient With Rheumatoid Arthritis Treated by Adalimumab in Combination With Low-dose Methotrexate) Study

This study will be conducted in Japan, South Korea and Taiwan to evaluate the optimal dosage of methotrexate (MTX) as an add-on therapy to adalimumab (ADA) in participants with rheumatoid arthritis (RA) who have not achieved remission by MTX monotherapy.

Read the detailed description

The erythrocyte MTX-polyglutamates (MTX-PG) concentration will be measured to evaluate its relationship to the efficacy and safety of MTX therapy.

Keywords
Methotrexate, Adalimumab, Autoimmune Disease, Connective Tissue Diseases, Rheumatic Disease, Rheumatoid Arthritis
Medical subject headings
Arthritis, Rheumatoid, Autoimmune Diseases, Connective Tissue Diseases, Rheumatic Diseases

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • MethotrexateDrug

    Also called MTX

    Route of Administration: Oral

  • AdalimumabDrug

    Also called ADA

    Route of Administration: Subcutaneous

Study groups in NCT03505008
Study groupRoleWhat they receive
MTX-Monotherapy GroupExperimentalParticipants will receive Methotrexate (MTX) at a starting dose of 6 to 8 mg/week, which will be promptly escalated to the maximum tolerated dose (MTD) of ≤25 mg/week up to Week 12, and maintained until Week 24. If the dosage of MTX is maintained ≥ 10 mg/week and simple disease activity index (SDAI) remission is achieved at Week 24, the MTX therapy will continue until Week 48.
Receives: Drug: Methotrexate
ADA/MTX-Maximum Tolerated Dose GroupExperimentalParticipants will receive Methotrexate (MTX) at a starting dose of 6 to 8 mg/week, which will be promptly escalated to the MTD of ≤25 mg/week up to Week 12, and maintained until Week 24. If the dosage of MTX is maintained ≥ 10 mg/week and SDAI remission is not achieved at Week 24, Adalimumab (ADA) 40 mg will be administered subcutaneously every other week in addition to the MTX therapy until Week 48.
Receives: Drug: Methotrexate; Drug: Adalimumab
ADA/MTX-Reduced Dose GroupExperimentalParticipants will receive Methotrexate (MTX) at a starting dose of 6 to 8 mg/week, which will be promptly escalated to the MTD of ≤25 mg/week up to Week 12, and maintained until Week 24. If the dosage of MTX is maintained ≥ 10 mg/week and SDAI remission is not achieved at Week 24, Adalimumab (ADA) 40 mg will be administered subcutaneously every other week in addition to low-dose MTX (6 to 8 mg/week) treatment until Week 48.
Receives: Drug: Methotrexate; Drug: Adalimumab

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Simple Disease Activity Index (SDAI) Remission Rate at Week 48 in mFAS

    SDAI is a validated combined index of rheumatoid arthritis disease activity, defined as the sum of Swollen Joint Count (0-28), Tender Joint Count (0-28), Patient's Global Assessment of Disease Activity (measured on a visual analogue scale with a range of 0 [none] to 10 [most severe]), Physician's Global Assessment of Disease Activity (measured on a visual analogue scale with a range of 0 [none] to 10 [most severe]), and C-reactive protein (mg/dL).

    Higher scores represent higher disease activity. SDAI ≤ 3.3 indicates disease remission, > 3.4 to 11 = low disease activity, > 11 to 26 = moderate disease activity, and > 26 = high disease activity.

    Measured: Week 48

Secondary outcomes (6)
  1. Simple Disease Activity Index (SDAI) Remission Rate at Week 48 in PPS

    SDAI is a validated combined index of rheumatoid arthritis disease activity, defined as the sum of Swollen Joint Count (0-28), Tender Joint Count (0-28), Patient's Global Assessment of Disease Activity (measured on a visual analogue scale with a range of 0 [none] to 10 [most severe]), Physician's Global Assessment of Disease Activity (measured on a visual analogue scale with a range of 0 [none] to 10 [most severe]), and C-reactive protein (mg/dL).

    Higher scores represent higher disease activity. SDAI ≤ 3.3 indicates disease remission, > 3.4 to 11 = low disease activity, > 11 to 26 = moderate disease activity, and > 26 = high disease activity.

    Measured: Week 48

  2. American College of Rheumatology (ACR) 20 Response Rate at Week 48

    ACR 20 response is defined as a subject meeting all of the following 3 criteria based on the evaluation results of tender joint count, swollen joint count, VAS (physician- and patient reported), HAQ, and CRP. Also, the proportion of ACR 20 response will be referred to as ACR 20 response rate.

    • ≥20% improvement in the tender joint count (of the total 68 joints) compared to Week 0 of treatment
    • ≥20% improvement in the swollen joint count (of the total 66 joints) compared to Week 0 of treatment
    • ≥20% improvement in ≥3 of 5 parameters (physician- and patient-reported disease activities, patient-reported pain score, HAQ, and CRP) compared to Week 0 of treatment

    Measured: Week 48

  3. American College of Rheumatology (ACR) 50 Response Rate at Week 48

    ACR 50 response is defined as a subject meeting all of the following 3 criteria based on the evaluation results of tender joint count, swollen joint count, VAS (physician- and patient reported), HAQ, and CRP. Also, the proportion of ACR 50 response will be referred to as ACR 50 response rate.

    • ≥50% improvement in the tender joint count (of the total 68 joints) compared to Week 0 of treatment
    • ≥50% improvement in the swollen joint count (of the total 66 joints) compared to Week 0 of treatment
    • ≥50% improvement in ≥3 of 5 parameters (physician- and patient-reported disease activities, patient-reported pain score, HAQ, and CRP) compared to Week 0 of treatment

    Measured: Week 48

  4. American College of Rheumatology (ACR) 70 Response Rate at Week 48

    ACR 70 response is defined as a subject meeting all of the following 3 criteria based on the evaluation results of tender joint count, swollen joint count, VAS (physician- and patient reported), HAQ, and CRP. Also, the proportion of ACR 70 response will be referred to as ACR 70 response rate.

    • ≥70% improvement in the tender joint count (of the total 68 joints) compared to Week 0 of treatment
    • ≥70% improvement in the swollen joint count (of the total 66 joints) compared to Week 0 of treatment
    • ≥70% improvement in ≥3 of 5 parameters (physician- and patient-reported disease activities, patient-reported pain score, HAQ, and CRP) compared to Week 0 of treatment

    Measured: Week 48

  5. Health Assessment Questionnaire - Disability Index ≤0.5 at Week 48

    HAQ-DI is a patient-reported questionnaire, consists of 20 questions in 8 domains: dressing/grooming, arising, eating, walking, hygiene, reach, grip, and daily activities. Participants assessed their ability to do each task over the past week as: without any difficulty (0); with some difficulty (1); with much difficulty (2); unable to do (3). Scores on each task were summed and averaged to provide an overall score from 0 to 3, where 0=no disability and 3=very severe, high-dependency disability. Normal physical function is defined by HAQ-DI score of < 0.5.

    Measured: Week 48

  6. Change in Modified Total Sharp Score ≤ 0.5 at Week 48

    Bone erosions will be evaluated for each region from a scale of 0 (no damage) to 5 (complete collapse of the joint). The score will be 0 to 5 for each hand joint, and 0 to 10 for each foot joint. The maximum total erosion score of both hands will be 160 points, and that of both feet will be 120 points.

    Joint space narrowing will be evaluated for each region from a scale of 0 (no damage) to 4 (ankylosis or luxation). The maximum total joint space narrowing score of both hands will be 120 points, and that of both feet will be 48 points.

    Erosion scores and joint space narrowing scores were added to obtain the mTSS (range from 0 to 448).

    Measured: Week 48

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted20 Apr 2018
  2. Study start18 Apr 2018
  3. Primary completion11 May 2021
  4. Study completion11 May 2021

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
300 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03505008
Sponsor's protocol ID
D2E7-C000-401
Status last verified
Mar 2025
First submitted
16 Apr 2018
Last updated
6 Mar 2025
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Tamai H, Ikeda K, Miyamoto T, Taguchi H, Kuo CF, Shin K, Hirata S, Okano Y, Sato S, Yasuoka H, Kuwana M, Ishii T, Kameda H, Kojima T, Nishi Y, Mori M, Miyagishi H, Toshima G, Sato Y, Tsai WC, Takeuchi T, Kaneko Y; MIRACLE Study Group. Association of methotrexate polyglutamates concentration with methotrexate efficacy and safety in patients with rheumatoid arthritis treated with predefined dose: results from the MIRACLE trial. Ann Rheum Dis. 2025 Jan;84(1):41-48. doi: 10.1136/ard-2024-226350. Epub 2025 Jan 2.

    PubMed 39874232
  • Tamai H, Ikeda K, Miyamoto T, Taguchi H, Kuo CF, Shin K, Hirata S, Okano Y, Sato S, Yasuoka H, Kuwana M, Ishii T, Kameda H, Kojima T, Taninaga T, Mori M, Miyagishi H, Sato Y, Tsai WC, Takeuchi T, Kaneko Y; MIRACLE study collaborators. Reduced versus maximum tolerated methotrexate dose concomitant with adalimumab in patients with rheumatoid arthritis (MIRACLE): a randomised, open-label, non-inferiority trial. Lancet Rheumatol. 2023 Apr;5(4):e215-e224. doi: 10.1016/S2665-9913(23)00070-X.

    PubMed 38251524

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Methotrexate and Adalimumab in people with Rheumatoid Arthritis, run by Keio University at 24 sites in 3 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 10 inclusion and 13 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 6 Mar 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 24 sites in Japan, South Korea, Taiwan. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 6 Mar 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Simple Disease Activity Index (SDAI) Remission Rate at Week 48 in mFAS (time frame: Week 48). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03505008, which also lists 2 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Mar 2025.

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