Completed

A Phase 2, Multi-Center, Double-Blind, Placebo-Controlled, Dose-Ranging Study to Evaluate the Safety, Tolerability, and Efficacy of LymphoStat-B™ Antibody (Monoclonal Anti-BLyS Antibody) in Subjects With Rheumatoid Arthritis (RA)

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What is being tested

Placebo

+ Belimumab 1 mg/kg

+ Belimumab 4 mg/kg

Drug
Who is being recruted

Arthritis+5

+ Arthritis, Rheumatoid

+ Autoimmune Diseases

From 18 to 65 Years
See all eligibility criteria
How is the trial designed

Treatment Study

Placebo-ControlledPhase 2
Interventional
Study Start: December 2003
See protocol details

Summary

Principal SponsorHuman Genome Sciences Inc.
Last updated: January 14, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: December 1, 2003

Actual date on which the first participant was enrolled.

The purpose of this study is to evaluate the safety and efficacy of three different doses of belimumab (1 mg/kg, 4 mg/kg, and 10 mg/kg), administered in addition to standard therapy, compared to placebo plus standard therapy in patients with RA. All patients were to be dosed on Days 0, 14, and 28, then every 28 days for the remainder of 24 weeks. Patients completing the 24-week period could enter a 24-week open-label extension; belimumab patients received the same dose or were switched to 10 mg/kg at the investigator's discretion and former placebo patients received belimumab 10 mg/kg.

Official TitleA Phase 2, Multi-Center, Double-Blind, Placebo-Controlled, Dose-Ranging Study to Evaluate the Safety, Tolerability, and Efficacy of LymphoStat-B™ Antibody (Monoclonal Anti-BLyS Antibody) in Subjects With Rheumatoid Arthritis (RA) 
Principal SponsorHuman Genome Sciences Inc.
Last updated: January 14, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

283 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Treatment Study

These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.



Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

From 18 to 65 Years

Range of ages for which participants are eligible to join.

Healthy volunteers not allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

ArthritisArthritis, RheumatoidAutoimmune DiseasesConnective Tissue DiseasesImmune System DiseasesJoint DiseasesMusculoskeletal DiseasesRheumatic Diseases

Criteria

Primary Inclusion Criteria: * Diagnosis of RA for at least 1 year * Failed at least 1 disease modifying anti-rheumatic drug (DMARD) due to toxicity or lack of efficacy. These drugs must include 1 or more of the following: methotrexate, parenteral gold, sulfasalazine, leflunomide, and tumor necrosis factor-alpha (TNFα) inhibitors (infliximab, etanercept or adalimumab) * Active RA disease of at least moderate disease activity * Be on a stable RA treatment regimen for at least the past 60 days (for DMARDS); if on non-steroidal anti-inflammatory drugs (NSAIDs) or steroids these must be at a stable dose for the last 30 days Primary Exclusion Criteria: * Received a non-FDA approved investigational agent within the last 28 days * Currently receiving or received within the last 60 days the following: TNFα-inhibitors (infliximab, etanercept, adalimumab) or interleukin-1 receptor antagonist (anakinra) * Currently receiving or received within the last 6 months the following: anti-CD20 antibody (rituximab) or cyclophosphamide * Steroid injection into any joint within the last 30 days * History of hypogammaglobulinemia or immunoglobulin A (IgA) deficiency * History of chronic infection that has been active within last 6 months, or herpes zoster within last 90 days, or any infection requiring hospitalization or intravenous medication within last 60 days * Human immunodeficiency virus (HIV), Hepatitis-B, Hepatitis-C

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups
Study Objectives

4 intervention groups are designated in this study

25% chance of being blinded to the placebo group

Treatment Groups

Group I

Placebo

Group II

Experimental

Group III

Experimental

Group IV

Experimental

Study Objectives

Primary Objectives

Secondary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 63 locations

Suspended

University of Alabama at Birmingham

Birmingham, United StatesSee the location
Suspended

Arizona Arthritis Research

Paradise Valley, United States
Suspended

University of Arizona

Tucson, United States
Suspended

Scripps Clinic

LaJolla, United States
Completed63 Study Centers