The purpose of the study was to evaluate the efficacy and safety of secukinumab 150 mg compared to placebo in the early management (Baseline to Week 8) of spinal pain, disease activity, fatigue, and predictability of disease flares in patients with axial spondyloarthritis (axSpA) who had an inadequate response to prior non-steroidal anti-inflammatory drugs (NSAIDs). This study also explored the efficacy and safety of secukinumab 300 mg compared to secukinumab 150 mg from Week 8 to Week 24 in order to assess the potential additional benefits of dose escalation in patients with axSpA.
The study consisted of 2 treatment periods: a double-blind, placebo-controlled period from Baseline to Week 8 (Treatment Period 1) and a double-blind secukinumab treatment period from Week 8 to Week 24 (Treatment Period 2). At Baseline (Treatment Period 1), patients were randomized in a 3:1 ratio to either secukinumab 150 mg (Group A) or placebo (Group B). At Week 8 (Treatment Period 2), patients were re-randomized and re-assigned respectively to 1 of 5 treatment arms to receive either secukinumab 150 mg or secukinumab 300 mg. Patients assigned to secukinumab 150 mg (Group A) at Baseline who were responders (i.e. spinal pain score \< 4) at Week 8 continued on the same dose until Week 24 under 1 treatment arm (Arm A1). Patients assigned to secukinumab 150 mg at Baseline who were non-responders at Week 8 were re-randomized to 1 of 2 treatment arms: secukinumab 150 mg (Arm A2) or secukinumab 300 mg (Arm A3) from Week 8 to Week 24. Similarly, patients assigned to placebo (Group B) at Baseline were re-randomized to 1 of 2 treatment arms: secukinumab 150 mg (Arm B1) or secukinumab 300 mg (Arm B2) from Week 8 until Week 24.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
383
anti IL-17a monoclonal antibody
Placebo matching AIN457
Novartis Investigative Site
Brussels, Belgium
Novartis Investigative Site
Liège, Belgium
Novartis Investigative Site
Burgas, Bulgaria
Novartis Investigative Site
Plovdiv, Bulgaria
Novartis Investigative Site
Sofia, Bulgaria
Novartis Investigative Site
Percentage of Participants With a Spinal Pain Numerical Rating Scale (NRS) Score Below 4 at Week 8 (Treatment Period 1)
The spinal pain numerical rating scale (NRS) is an 11-point scale to assess pain intensity in patients who are able to self-report. It is an 11-point scale from 0-10: 1) "0" = no pain. 2) "10" = the most intense pain imaginable. To calculate the average spinal pain, the patient was asked to answer 2 questions to get 2 pain ratings, the total spinal pain corresponding to the intensity of spinal pain experienced on an average over 24 hours during the previous week and the nocturnal back pain corresponding to the intensity of spinal pain experienced on an average over the night during the previous week.
Time frame: Week 8
Percentage of Participants With a Bath Ankylosing Spondylitis Disease Activity Index Score Below 4 at Week 8 (Treatment Period 1)
The Bath ankylosing spondylitis disease activity index (BASDAI) consists of a 0 through 10 scale, which is used to answer 6 questions pertaining to the 5 major symptoms of ankylosing spondylitis. To give each symptom equal weighting, the mean (average) of the 2 scores relating to morning stiffness (questions 5 and 6) is taken. The mean of questions 5 and 6 is added to the scores from questions 1-4. The resulting 0 to 50 score is divided by 5 to give a final 0 - 10 BASDAI score.
Time frame: Week 8
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Sofia, Bulgaria
Novartis Investigative Site
Sofia, Bulgaria
Novartis Investigative Site
Zagreb, HRV, Croatia
Novartis Investigative Site
Rijeka, Croatia
Novartis Investigative Site
Zagreb, Croatia
...and 56 more locations