Efficacy and Safety Study of Secukinumab in Chinese Participants With Non-radiographic Axial Spondyloarthritis

Inclusion Criteria: * Male or non-pregnant, non-nursing female patients at least 18 years of age * Diagnosis of axial spondyloarthritis according to Ankylosing SpondyloArthritis International Society (ASAS) axial spondyloarthritis criteria * Objective signs of inflammation (magnetic resonance imaging (MRI) or abnormal C-reactive protein) * Active axial spondyloarthritis as assessed by total Bath Ankylosing Spondylitis Disease Activity Index \>=4 cm * Spinal pain as measured by Bath Ankylosing Spondylitis Disease Activity Index question #2 ≥ 4 cm (0-10 cm) at baseline * Total back pain as measured by Visual Analogue scale ≥ 40 mm (0-100 mm) at baseline * Patients should have been on at least 2 different non-steroidal anti-inflammatory drugs with an inadequate response * Patients who have been on a TNFα inhibitor (not more than one) must have experienced an inadequate response Exclusion Criteria: * Patients with radiographic evidence for sacroiliitis, grade ≥ 2 bilaterally or grade ≥ 3 unilaterally * Inability or unwillingness to undergo MRI * Chest X-ray or MRI with evidence of ongoing infectious or malignant process * Patients taking high potency opioid analgesics * Previous exposure to secukinumab or any other biologic drug directly targeting interleukin-17 (IL-17) or IL-17 receptor * Pregnant or nursing (lactating) women Other protocol-defined inclusion/exclusion criteria may apply.