Related Experiment Video
Updated: Jul 18, 2026

Scaled-Up Preparation of an Intermediate of Upatinib, ACT051-3
Published on: April 7, 2023
Drug Insight: abatacept for the treatment of rheumatoid arthritis
Eric M Ruderman1, Richard M Pope
1Division of Rheumatology, Northwestern University Feinberg School of Medicine, 675 North St. Clair Street, Chicago, IL 60611, USA. e-ruderman@northwestern.edu
Abstract:
Although the development of tumor necrosis factor antagonists has improved the clinical outcome of many patients with rheumatoid arthritis (RA), some patients fail to respond to these drugs or have contraindications preventing their use. Other approaches for treating this disease are, therefore, keenly sought. As T cells promote numerous disease pathways in RA, these cells are a logical target for anti-inflammatory therapy. One of the approaches being investigated involves targeting the co-stimulatory signals that accompany antigen-derived signals involved in the activation of T cells. Abatacept is a recombinant fusion protein that interrupts the T-cell co-stimulatory signal mediated through the CD28-CD80/CD86 pathway. Several clinical trials have now confirmed the efficacy of this compound in the treatment of RA. This article discusses the proposed mechanism of action of abatacept and reviews the data from phase II and phase III clinical trials on the safety and efficacy of this drug in RA.
Insights
Abatacept offers a new treatment option for rheumatoid arthritis (RA) by targeting T-cell co-stimulation. Clinical trials confirm its efficacy and safety for patients unresponsive to other therapies.
Area of Science:
- Immunology
- Rheumatology
- Pharmacology
Background:
- Rheumatoid arthritis (RA) treatment often involves tumor necrosis factor antagonists, but some patients lack response or have contraindications.
- T cells play a crucial role in RA pathogenesis, making them a viable target for anti-inflammatory therapies.
- Targeting T-cell co-stimulatory signals is an emerging therapeutic strategy for autoimmune diseases.
Purpose of the Study:
- To discuss the mechanism of action of abatacept, a T-cell co-stimulatory inhibitor.
- To review clinical trial data on the safety and efficacy of abatacept in rheumatoid arthritis patients.
Main Methods:
- Review of Phase II and Phase III clinical trial data.
- Analysis of abatacept's mechanism of action involving the CD28-CD80/CD86 pathway.
Main Results:
- Abatacept has demonstrated efficacy in the treatment of rheumatoid arthritis.
- Clinical trials have confirmed the safety profile of abatacept.
Conclusions:
- Abatacept provides an effective therapeutic option for rheumatoid arthritis patients.
- Targeting T-cell co-stimulation with abatacept represents a significant advancement in RA treatment.
Related Concept Videos
Drugs for Treatment of Crohn's Disease in IBD Using Biologic Agents: Anti-TNF
Drugs for Treatment of Crohn's Disease in IBD Using Immunomodulatory Agents
Drugs for Treatment of Crohn's Disease in IBD Using Glucocorticoids
The JAK-STAT Signaling Pathway
Drugs for Treatment of Ulcerative Colitis in IBD
Rheumatic Heart Disease III: Medical Management
