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Biosimilar arthritis drug shows promise in small study

NCT ID NCT03885037

Disease control Sponsor: Pfizer Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested a biosimilar version of the drug infliximab (made by Pfizer) in 77 people with rheumatoid arthritis. The goal was to see how safe and effective it is in real-world use. Participants received the drug by IV infusion, and researchers tracked side effects and disease activity over time.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
infliximab biosimilar (Pfizer)
What this could lead to
If successful, this could provide a more affordable treatment option for rheumatoid arthritis.
What could go wrong
This is a small, completed study without a control group, so results may not be generalizable. Biosimilars may have subtle differences in effectiveness or side effects.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

77 people

The number who actually took part.

Started

Mar 2019

Finished

Nov 2024

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Patients with Rheumatoid Arthritis treated by Infliximab BS

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Patients with rheumatoid arthritis who started treatment with this drug * Patients who received this drug for the first time after the day of launch of this drug.

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Conditions

The condition(s) this trial relates to.

rheumatoid arthritis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Rheumatoid arthritis

Contacts and locations

Locations

  • Pfizer Local Country Office

    Tokyo, Japan

More trials for these conditions

Other studies related to the condition(s) this trial covers.