P278 Real-world experience with an IL-17A blocker in biologic-naïve and biologic-experienced radiographic and non-radiographic axSpA patients. (20th April 2020)

• Record Type: Journal Article
• Authors: Booth, Nicola; Hill, Julie; Leage, Soyi Liu; Sapin, Christophe; Holdsworth, Elizabeth; Antonelli, Silvia
• Is Part Of: Rheumatology. Volume 59(2020)Supplement 2
• Publication Date: 2020-04-20
• Subjects: Rheumatism -- Periodicals; Rheumatology -- Periodicals; 616.723005
• DOI: 10.1093/rheumatology/keaa111.271
• Languages: English
• ISSNs: 1462-0324

Abstract

Abstract: Background: In Europe, IL-17A blocker secukinumab is approved for ankylosing spondylitis (AS). The label dose is 150mg: loading dose regimen at weeks 0, 1, 2, 3 and 4, followed by monthly maintenance dosing. 300mg dose is not indicated for AS. Secukinumab is not yet approved for non-radiographic axial spondyloarthritis (nr-axSpA). Objectives: Describe real-world dose utilization of an IL-17A blocker among axial spondyloarthritis (axSpA) patients with radiographic (AS) and nr-axSpA. Methods: Descriptive, cross-sectional survey of physicians managing axSpA (France, Germany, Italy, Spain, UK, Austria & Australia). At the time of survey (April-August 2019), only secukinumab was approved. Physicians completed patient record forms for their next 7 consulting patients currently treated with or discontinued secukinumab, recording demographics, disease activity (Bath Ankylosing Spondylitis Disease Activity Index, BASDAI), Ankylosing Spondylitis Disease Activity Score, ASDAS) and treatment history. Results: 275 rheumatologists and 4 orthopedists provided data for 2, 101 patients: 1, 509 (1151 AS; 358 nr-axSpA) currently receiving secukinumab and 592 (385 AS; 207 nr-axSpA) secukinumab discontinuers. Mean age was 45.1years (45.8 AS; 43.2 nr-axSpA), 64.4% were male (68.8% AS, 52.4% nr-axSpA), and mean time diagnosed was 5.3years (5.9 AS; 3.8 nr-axSpA). 50.5% (48.4% AS; 55.9% nr-axSpA) of patients were receiving secukinumab as their first biologic, 48.4% biologic-experienced. 94.1% (93.9% AS; 94.3% nr-axSpA) of all users were treated beyond loading dose phase of secukinumab; 8.8% dose up-titrated from 150mg to 300mg. Of patients currently receiving secukinumab maintenance, median treatment duration was 44.4weeks (n = 1249). 71.5% (71.4% AS; 72.3% nr-axSpA) received 150mg monthly, 28.5% received a dose outside label (23.7% on 300mg). For discontinuers who reached maintenance phase, median treatment duration was 20.0weeks (n = 547). 38.7% (37.4% AS; 41.3% nr-axSpA) of secukinumab discontinuers received a dose outside label (33.9% on 300mg). 30.5% (28.8% AS; 36.1% nr-axSpA) of biologic-experienced patients received secukinumab 300mg. The utilization of secukinumab 300mg in biologic-experienced discontinuers was 36.9% and higher than in current biologic-experienced users (28.0%). At initiation of secukinumab 150mg, 95.1% and 90.7% of patients had BASDAI≥4 (n = 593) and ASDAS≥2.1 (n = 129), respectively. For those continuing, after a median duration of 42.3weeks, 31.7% (30.4% AS; 35.7% nr-axSpA) had BASDAI≥4 and 30.2% (27.8% AS; 37.5% nr-axSpA) ASDAS≥2.1. At initiation of secukinumab 300mg, 93.1% and 96.4% had BASDAI≥4 (n = 173) and ASDAS≥2.1 (n = 28), respectively. For those continuing, after median duration of 51.9weeks, 42.2% (38.2% AS; 54.8% nr-axSpA) had BASDAI≥4 and 57.1% (52.4% AS; 71.4% nr-axSpA) ASDAS≥2.1. Conclusion: In the real-world, secukinumab discontinuation occurred after 20.0weeks, despite approximately one third being treated with secukinumab 300mg. For those remaining on secukinumab, up to 30% used outside-label doses (higher in biologic-experienced patients). Secukinumab is not universally prescribed for the approved indication or at the recommended dose. There is a suggestion that not all patients receiving a higher dose achieve low disease activity. Disclosures: N. Booth: Grants/research support; Research was funded by eli-lilly and company. Other; Employed by Adelphi Real World. J. Hill: Other; Employed by Eli Lilly and company. S. Leage: Other; Employed by Eli Lilly and company. C. Sapin: Other; Employed by Eli Lilly and company. E. Holdsworth: Other; Employed by Adelphi Real World. S. Antonelli: Other; Employed by Eli Lilly and company.