Phase 4 Rheumatoid Arthritis Trial, Recruiting
Who may be able to join
AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI
Who might be able to join this trial:
- People who have never previously been treated with methotrexate (MTX), by any method of taking it
- People who are 18 years of age or older at the time of signing the consent form
- People who have been diagnosed with rheumatoid arthritis according to the 2010 EULAR/ACR classification criteria
- People whose rheumatoid arthritis is measured as moderately to highly active (an SDAI score above 11) at the screening stage
- People who have never been treated with JAK inhibitors or biological disease-modifying drugs (bDMARDs) (confirm with trial site if unsure which medications these include)
- Women of childbearing potential who are able to use appropriate contraception during the study and for at least one menstrual period after finishing MTX treatment
- Women who have been through menopause for at least one year before signing the consent form, or who are unable to have children due to sterilisation
- Men who are able to father children and who can use appropriate contraception during the study and for at least three months after finishing MTX treatment
- People who are able to understand the study procedures and are willing to provide written consent to participate
Who may not be able to join:
- Women who are pregnant or who may be pregnant
- People who have had an allergic reaction to any ingredient in the study drug
- People with a history of certain serious blood or lymphatic conditions, such as myelodysplastic syndrome, aplastic anaemia, or erythroblastoma
- People who have been diagnosed with or treated for a lymphoproliferative (lymph system) disease within the past five years
- People with significantly low white blood cell counts or platelet counts, as measured by specific blood test thresholds
- People with serious liver problems, including active hepatitis B or C, cirrhosis, or significantly elevated liver enzyme levels (AST or ALT above 150 U/L)
- People with severe kidney problems, including those on dialysis or with a kidney filtration rate (GFR) below 30 mL/min/1.73m²
- People who have fluid build-up around the lungs (pleural effusion) or in the abdomen (ascites)
- People with active tuberculosis
- People whom the principal investigator considers medically unsuitable to participate for any other reason
Important: Always verify eligibility with the trial site directly before applying.
Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.
Contact this trial
Phone: +81-3-5363-3786
Contact details sourced from ClinicalTrials.gov. Verify directly with the trial site before attending.
GP referral letter
Print a one-page summary to share with your doctor.
Trial details
Where this trial is recruiting
Primary endpoints
Change in MTX-PG concentrations in erythrocytes from baseline
Can't join this trial?
Data last synced from ClinicalTrials.gov: 27 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.