Efficacy And Safety Of Secukinumab In Ankylosing Spondylitis: Real-World Data From Midlands Ankylosing Spondylitis Collaboration (Masc)

Abstract Background/Aims Secukinumab is an interleukin-17 inhibitor has been found to be effective in the treatment of ankylosing spondylitis (AS) in studies, including phase 3 clinical trials, however these are conducted in highly selected patients and it is important to confirm the efficacy and safety in a real world data. Response to secukinumab should be assessed after 16-weeks and continued if there has been sufficient response to treatment according to the BASDAI and spinal VAS scores. Methods This was a multicentre cross-sectional observational study in collaboration with Midland Ankylosing Spondylitis Collaboration. Consecutive baseline and 16th week data of all AS patients on Secukinumab from 2017 to 2019 were collected and analysed to assess treatment response. All data were compiled in excel sheets and analysed using Medcalc calculator. Data were collected from collaborative efforts of the Royal Wolverhampton NHS trust, Queen’s Hospital (Burton on Trent), Leicester Royal Infirmary and Robert Jones and Agnes Hunt hospital. Results Total 92 patients with radiographic AS on standard dose of secukinumab were included at baseline and 88 were followed up till week 16. Mean age was 45.9(SD ± 15) (Median=44years) and 67% were male. Baseline Mean BASDAI was 7 (SD ± 1.7); Mean CRP was 16.6 (SD ± 11.2), Mean VAS was 7.6(SD ± 1.6). There was statistical significant change in BASDAI, VAS and CRP levels at week 16th. ΔBASDAI=2.2 (SD ± 2) (p = 0.002), ΔVAS=3.2 (SD ± 2.1) (p = 0.001), ΔCRP=6.9 (SD ± 17) (p = 0.03). At 16th week, 68% had clinical improvement while 4 patients discontinued therapy (2-colitis, 1-uveitis and 1-patient choice). 10% overall had some adverse effects with most common being upper respiratory tract infection. We also compared patients with previous anti-TNF exposure (TE) to Anti-TNF naïve (TN). 63% were in TE group vs 37% in TN. 69% of TE and 76% of TN showed clinical improvement at week 16.Mean ΔBASDAI was more in TN group vs TE (p = 0.01), however there was no difference in ΔVAS and ΔCRP levels. (p = 0.0 & p = 0.2 respectively). Conclusion This multi-centre retrospective analysis found secukinumab to be clinically effective in 68% of patients with AS. There was significant improvement in BASDAI, VAS and CRP levels at week16. Compared to anti-TNF resistant patients, TNF-Naïve responded better to secukinumab, although both showed good clinical improvement. These findings support the use of secukinumab in the treatment of AS, as a first line therapy or for those who have failed anti-TNF therapy. Safety signals observed in the real-word data set were consistent with those seen in the clinical trials and the Summary of Product Characteristics. Disclosure N. Jain: None. R. Laxminarayan: Honoraria; Honorarium from Novartis, Lilly, Pfizer and Abvie. A. Moorthy: Honoraria; Speaker and conference fee MSD, Novartis, Abbvie. R. Amarasena: None. N. Cleaton: None. G. Kakade: None. A. Gunawardane: None. T. Khan: None. H. Sapkota: None. N. Barkham: Grants/research support; research funding from Novartis, Eli Lilly, UCB.