Completed

ATLASA Phase 3 Multicenter Study of the Safety and Efficacy of the Human Anti-TNF Monoclonal Antibody Adalimumab in Subjects With Active Ankylosing Spondylitis

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What is being tested

adalimumab (D2E7)

+ placebo

Biological
Who is being recruted

Axial Spondyloarthritis+10

+ Ankylosis

+ Arthritis

Over 18 Years
See all eligibility criteria
How is the trial designed

Treatment Study

Placebo-ControlledPhase 3
Interventional
Study Start: January 2004
See protocol details

Summary

Principal SponsorAbbott
Last updated: January 14, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: January 1, 2004

Actual date on which the first participant was enrolled.

The objective of this study was to evaluate the safety and efficacy of adalimumab 40 mg given every other week (eow) in subjects with active ankylosing spondylitis (AS) who have had an inadequate response to, or who are intolerant to, treatment with at least 1 nonsteroidal anti-inflammatory drug (NSAID) and who may have also failed treatment with at least 1 disease-modifying antirheumatic drug (DMARD).

Official TitleA Phase 3 Multicenter Study of the Safety and Efficacy of the Human Anti-TNF Monoclonal Antibody Adalimumab in Subjects With Active Ankylosing Spondylitis 
Principal SponsorAbbott
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

315 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.

Over 18 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

Axial SpondyloarthritisAnkylosisArthritisBone DiseasesBone Diseases, InfectiousInfectionsJoint DiseasesMusculoskeletal DiseasesSpinal DiseasesSpondylitisSpondylitis, AnkylosingSpondylarthritisSpondylarthropathies

Criteria

Inclusion Criteria: * Subjects must be \>= 18 years of age * meet Modified NY Criteria definition of ankylosing spondylitis (AS) * have diagnosis of active AS based on protocol specified criteria * inadequate response or intolerance to \>= 1 nonsteroidal antiinflammatory drug (NSAID) * be able and willing to learn to self-administer subcutaneous (SC) injections Exclusion Criteria: * Active tuberculosis, listeriosis,or hepatitis B, or any history of hepatitis C * History of demyelinating disease, multiple sclerosis, cancer, or lymphoproliferative disease * Previous anti-tumor necrosis factor therapy * Treatment with disease-modifying antirheumatic drugs (DMARDs - other than methotrexate, hydroxychloroquine, and sulfasalazine) * Treatment with intra-articular corticosteroid joint injections within 4 weeks of study dosing * Biologic or investigational therapy within 6 weeks of study dosing * Treatment with intravenous (IV) antibiotics within 30 days of study dosing * Treatment with oral antibiotics within 14 days of study dosing

Study Plan

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

2 intervention groups are designated in this study

50% chance of being blinded to the placebo group

Treatment Groups

Group I

Experimental

Group II

Placebo

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 no location dataSave this study to your profile to know when the location data is available. 
CompletedNo study centers