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Completed

NCT Number: NCT05796245

A Study to Learn About the Study Medicine Called Infliximab (Genetical Recombination)[Infliximab Biosimilar 3] in People With Rheumatoid Arthritis, Ulcerative Colitis, Crohn's Disease, or Psoriasis

The purpose of this study is to learn about the safety of the safety of the study medicine called infliximab for the possible treatment of rheumatoid arthritis (RA), ulcerative colitis (UC, Crohn's disease, or psoriasis.

RA is a kind of joint disease that causes pain and swelling.

UC causes inflammation and sores (also called ulcers), in the lining of the rectum and colon.

Chron's disease is a disease that lasts for a long time and causes severe irritation in your digestive tract.

Psoriasis is a skin disease that gives you a dry, scaly rash.

The study includes patient's data from the database who:

* Have at least 90 days of look-back period * Have any of these diseases (RA, UC, Crohn's disease, or Psoriasis) in the 90-day look back period * Are 15 years of age or older at the time of first dosing

All the patient's data included in this study would have received infliximab as intravenous (into veins) injection.

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Key information

Conditions

Arthritis, Rheumatoid Arthritis Autoimmune Diseases Colitis Colitis, Ulcerative Colonic Diseases Connective Tissue Diseases Crohn Disease Digestive System Diseases Gastroenteritis Gastrointestinal Diseases Immune System Diseases Inflammatory Bowel Diseases Intestinal Diseases Joint Diseases Musculoskeletal Diseases Psoriasis Rheumatic Diseases Skin Diseases Skin Diseases, Papulosquamous Skin and Connective Tissue Diseases

Age range

15 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Pfizer

Tokyo, Japan

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Have at least 90 days of look-back period
  • Have diagnostic code of indicated diseases (rheumatoid arthritis, ulcerative colitis, Crohn's disease, or psoriasis) in the 90-day look-back period. Patients with >1 indication will be summarized as a separate group from each sub-cohort. An inpatient or outpatient visit assigned a diagnosis code consistent with either rheumatoid arthritis, ulcerative colitis, Crohn's disease, or psoriasis using ICD-10 coding.
  • 15 years of age or older at the time of index date

Exclusion criteria

  • Patients with pre-existing safety outcome event during the 90-day look-back period will be excluded from the study cohort for that specific outcome event as this study is observing incident cases.

Treatment and study plan

Primary outcomes

  1. Incidence Rate of Serious Infections

    Time frame: From index date up to 60 days after last dose

    The observation of serious infections was expected to occur in an acute time period following any exposure. An incident event occurring during the 60-day risk window was counted in the numerator for the analysis and the person-time accrued until the first occurrence of an event, the end of the 60-day risk window, date of switch treatment, death, or the end of study period. Additionally, two types of analyses based on propensity score were conducted.

    For the full analysis set, 9 and 232 events occurred with a total of 151.9 and 2609.9 person-years in the Infliximab-Pfizer Biosimilar group and Remicade group, respectively. For the comparative analysis set, 5 and 232 events occurred with a total of 22.8 and 2609.9 person-years. For the comparative analysis set (IPTW weighted), 0.5 and 230.7 events occurred with a total of 3.6 and 2598.5 person-years. For the comparative matched analysis set, 5 and 6 events occurred with a total of 22.8 and 46.7 person-years.

Secondary outcomes

  1. Incidence Rate of Tuberculosis

    Time frame: From index date up to 60 days after last dose

    The observation of tuberculosis was expected to occur in an acute time period following any exposure. An incident event occurring during the 60-day risk window was counted in the numerator for the analysis and the person-time accrued until the first occurrence of an event, the end of the 60-day risk window, date of switch treatment, death, or the end of study period. Additionally, two types of analyses based on propensity score were conducted.

    For the full analysis set, 0 and 14 events occurred with a total of 161.8 and 2904.1 person-years in the Infliximab-Pfizer Biosimilar group and Remicade group, respectively. For the comparative analysis set, 0 and 14 events occurred with a total of 27.2 and 2904.1 person-years. For the comparative analysis set (IPTW weighted), 0.0 and 14.3 events occurred with a total of 10.4 and 2889.7 person-years. For the comparative matched analysis set, 0 and 1 event occurred with a total of 27.2 and 50.1 person-years.

  2. Incidence Rate of Serious Blood Disorder

    Time frame: From index date up to 60 days after last dose

    The observation of serious blood disorder was expected to occur in an acute time period following any exposure. An incident event occurring during the 60-day risk window was counted in the numerator for the analysis and the person-time accrued until the first occurrence of an event, the end of the 60-day risk window, date of switch treatment, death, or the end of study period. Additionally, two types of analyses based on propensity score were conducted.

    For the full analysis set, 1 and 15 events occurred with a total of 163.5 and 2913.5 person-years in the Infliximab-Pfizer Biosimilar group and Remicade group, respectively. For the comparative analysis set, 1 and 15 events occurred with a total of 27.5 and 2913.5 person-years. For the comparative analysis set (IPTW weighted), 0.1 and 14.9 events occurred with a total of 10.4 and 2899.6 person-years. For the comparative matched analysis set, 1 and 0 events occurred with a total of 27.5 and 52.5 person-years.

  3. Incidence Rate of Interstitial Pneumonia

    Time frame: From index date up to 60 days after last dose

    The observation of interstitial pneumonia was expected to occur in an acute time period following any exposure. An incident event occurring during the 60-day risk window was counted in the numerator for the analysis and the person-time accrued until the first occurrence of an event, the end of the 60-day risk window, date of switch treatment, death, or the end of study period. Additionally, two types of analyses based on propensity score were conducted.

    For the full analysis set, 5 and 42 events occurred with a total of 157.1 and 2918.8 person-years in the Infliximab-Pfizer Biosimilar group and Remicade group, respectively. For the comparative analysis set, 1 and 42 events occurred with a total of 26.2 and 2918.8 person-years. For the comparative analysis set (IPTW weighted), 0.3 and 42.1 events occurred with a total of 10.1 and 2905.0 person-years. For the comparative matched analysis set, 1 and 1 event occurred with a total of 26.2 and 52.5 person-years.

  4. Incidence Rate of Malignancy

    Time frame: From index date up to the first incident event, death, end of the study period, or loss to follow-up

    This study analyzed malignancy by extending follow-up time until the first incident event, death, end of the study period, or loss to follow-up. The primary analysis utilized an ever-exposed approach whereby a person always was considered exposed to the initial treatment. All malignancies were reported in the primary analysis even those that occur after the day of initial treatment. Additionally, two types of analyses based on propensity score were conducted.

    For the full analysis set, 7 and 77 events occurred with a total of 172.5 and 4480.2 person-years in the Infliximab-Pfizer Biosimilar group and Remicade group, respectively. For the comparative analysis set, 1 and 77 events occurred with a total of 27.7 and 4480.2 person-years. For the comparative analysis set (IPTW weighted), 0.0 and 76.7 events occurred with a total of 10.5 and 4458.5 person-years. For the comparative matched analysis set, 1 and 4 events occurred with a total of 27.7 and 78.4 person-years.

Sponsors and collaborators

Lead sponsor

Pfizer

Industry

Registry information

Official study title

Infliximab-Pfizer Biosimilar Post-Marketing Database Study

Important dates

Study start
2023
Primary completion
2024
Study completion
2024
First posted
Apr 3, 2023
Registry last updated
Jun 4, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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