A Multicenter, Randomized, Double-blind, Placebo-controlled Phase III Clinical Study to Evaluate the Efficacy and Safety of 608 in Adult Subjects With Active Ankylosing Spondylitis (AS)
Trial Snapshot
- Phase
- Phase 3
- Status
- Recruiting
- Enrollment
- 500
- Locations
- 1
- Primary Endpoint
- The Percentage of Participants Who Achieved an Assessment of Spondylo Arthritis International Society (ASAS) 40 Response.
Study Overview
Brief Summary
This study will evaluate the efficacy and safety of 608 in patients with AS.
Detailed Description
The purpose of this trial is to demonstrate the clinical efficacy at week 16; and to demonstrate safety and tolerability of 608 compared to placebo in patients with ankylosing spondylitis at week 16 and long term safety up to Week 60.
Study Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Parallel
- Primary Purpose
- Treatment
- Masking
- Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Eligibility Criteria
- Ages
- 18 Years to — (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- No
Inclusion Criteria
- •Able to understand and comply with the protocol requirements, participate and sign the informed consent form (ICF) voluntarily;
- •At least 18 years of age at the time of signing the ICF, with no gender restrictions;
- •Meet the 1984 modified New York criteria for ankylosing spondylitis (AS);
- •Have inadequate response to non-steroidal anti-inflammatory drugs (NSAIDs) or have contraindications/intolerance to NSAIDs treatment;
- •Willing to practice contraception and have no plans for pregnancy, sperm donation, or egg donation from the screening period until at least 6 months after the last dose.
Exclusion Criteria
- •Patients with other uncontrolled active inflammatory diseases.
- •Clinical laboratory tests and other tests that reveal abnormalities with clinical significance
- •Patients who have active Hepatitis B, Hepatitis C or HIV infections as determined by positive results at Screening.
- •History of cancer.
- •Known or suspected history of immunosuppression.
Arms & Interventions
608 Dose
608 subcutaneous (SC) injection.
Intervention: 608 dose (Drug)
Placebo
Placebo subcutaneous (SC) injection.
Intervention: Placebo (Drug)
Outcomes
Primary Outcomes
The Percentage of Participants Who Achieved an Assessment of Spondylo Arthritis International Society (ASAS) 40 Response.
Time Frame: Week 16.
Assessment of SpondyloArthritis International Society criteria (ASAS) consist of 6 domains (4 main and 2 additional assessment domains): 1. Patient's global assessment measured on a NRS; 2. Patient's assessment of back pain, measured on a NRS; 3. Function represented by Bath Ankylosing Spondylitis Functional Index (BASFI) average of 10 questions as measured by NRS; 4. Inflammation represented by mean duration and severity of morning stiffness, on the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) as measured by NRS; 5. Spinal mobility represented by the Bath Ankylosing Spondylitis Metrology Index (BASMI) lateral spinal flexion assessment; 6. C-reactive protein (acute phase reactant). ASAS40 response is defined as an improvement of ≥40% and ≥2 units on a scale of 10 in at least three of the four ASAS main domains and no worsening at all in the remaining domain. A higher score on the NRS signifies higher severity.
Secondary Outcomes
- The Percentage of Participants Who Achieved an Assessment of Spondylo Arthritis International Society (ASAS) 20 Response.(Week 16.)