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Immune Therapy Generates Promising Results in Hard-to-Treat Ankylosing Spondylitis

Results from a phase 3 clinical trial indicate that patients who have not benefited from standard therapy for ankylosing spondylitis (AS), a chronic inflammatory disease characterized by back pain and sacroiliac-joint damage, may have another treatment option in the biologic drug ixekizumab. The findings will be presented at the American College of Rheumatology’s annual meeting in Chicago (October 20-24, 2018) and simultaneously published in the ACR journal, Arthritis & Rheumatology.

Saturday, October 20, 2018 5:30 pm EDT
"Many people with this chronic, debilitating disease are still searching for an effective treatment. These positive results provide support for ixekizumab as a potential treatment option for patients with AS, including those who have had an inadequate response to treatment with TNF inhibitors, a difficult-to-treat population"

Embargo/Online Publication Date: 17:30 Hours ET, Saturday, October 20, 2018
[22.30 Hours UK Time (BST)/8:30 Hours Australian Eastern Daylight Time (AEDT), October 21]

Results from a phase 3 clinical trial indicate that patients who have not benefited from standard therapy for ankylosing spondylitis (AS), a chronic inflammatory disease characterized by back pain and sacroiliac-joint damage, may have another treatment option in the biologic drug ixekizumab. The findings will be presented at the American College of Rheumatology’s annual meeting in Chicago (October 20-24, 2018) and simultaneously published in the ACR journal, Arthritis & Rheumatology.

Approximately 30 to 40 percent of patients with AS do not achieve adequate disease control or symptom relief from tumor necrosis factor (TNF) inhibitors, the currently recommended treatment for AS. In addition, some patients may not be eligible to receive the recommended treatment due to contraindications. The cytokine IL-17 is thought to play a role in the development of AS, and IL-17 inhibitors are effective in some patients, but they have not been evaluated exclusively in patients who have not experienced symptom relief with TNF inhibitors.  

To test the strategy in these patients, Atul Deodhar, MD, of Oregon Health & Science University in Portland, and his colleagues conducted a randomized, double-blind, placebo-controlled Phase 3 clinical trial of ixekizumab, a high-affinity monoclonal antibody that selectively targets IL-17A, in patients with AS who experienced a previous inadequate response or intolerance to TNF inhibitors. For the trial, 316 patients were randomized 1:1:1 to placebo, ixekizumab every 2 weeks (IXEQ2W), and ixekizumab every 4 weeks (IXEQ4W), with an 80-mg or 160-mg starting dose.

At week 16, 30.6 percent and 25.4 percent of patients in the IXEQ2W and IXEQ4W groups, respectively, demonstrated significant improvements in the signs and symptoms of AS, compared with 12.5 percent of patients in the placebo group. There were statistically significant differences reported as early as week 1 with ixekizumab treatment. Also, significant improvements in disease activity, function, quality of life, and spinal inflammation were observed with 16 weeks of ixekizumab treatment versus placebo. Treatment-related adverse events were more frequent with ixekizumab than with placebo. One death was reported, in the IXEQ2W group.

“Many people with this chronic, debilitating disease are still searching for an effective treatment. These positive results provide support for ixekizumab as a potential treatment option for patients with AS, including those who have had an inadequate response to treatment with TNF inhibitors, a difficult-to-treat population,” said Dr. Deodhar.

Additional Information  

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Full Citation: “Efficacy and Safety of Ixekizumab in the Treatment of Radiographic Axial Spondyloarthritis: 16 Week Results of a Phase 3 Randomized, Double-Blind, Placebo Controlled Trial in Patients with Prior Inadequate Response or Intolerance to Tumor Necrosis Factor Inhibitors.” Atul Deodhar, Denis Poddubnyy, Cesar Pacheco-Tena, Carlo Salvarani, Eric

Lespessailles, Proton Rahman, Pentti Järvinen, Juan Sanchez Burson, Karl

Gaffney, Eun Bong Lee, Eswar Krishnan, Silvia Santisteban, Xiaoqi Li, Fangyi

Zhao, Hilde Carlier, John D. Reveille, on behalf of the COAST-W study group. Arthritis & Rheumatology; Published Online: Saturday, October 20, 2018 5:30 pm ET; 4:30 pm CT (DOI: 10.1002/art.40753).

URL Upon Publicationhttp://doi.wiley.com/10.1002/art.40753

Author Contact: OHSU Media Relations, at  news@ohsu.edu or +1 503-494-8231.

Disclosures:  

AD- Research grants from AbbVie, Eli Lilly and Company, Janssen, Novartis, Pfizer, UCB. Consulting Fees from Abbvie, BMS, Eli Lilly and Company, Janssen, Novartis, Pfizer, UCB

DP - Consulting and/or speaker fees from AbbVie, BMS, Janssen, MSD, Novartis, Pfizer, Roche, and UCB. Research grants from Abbvie, Eli Lilly and Company, MSD, Novartis and Pfizer. 

C P-T – Research grants from Eli Lilly and Company. 

CS – Research grants from Eli Lilly and Company. 

EL – Research grants from Eli Lilly and Company. 

PR – Consulting fees from Abbvie, Amgen, BMS, Celgene, Eli Lilly and Company, Janssen, Pfizer, Novartis, Merck, and UCB. Research grants from Janssen and Eli Lilly and Company. Speaker fees from Abbvie, Amgen, BMS, Celgene, Eli Lilly and Company, Janssen, Pfizer, Novartis, Merck, and UCB. 

PJ – Research grants from Eli Lilly and Company. 

JSB – Research grants from Eli Lilly and Company. KG - Research grants, consultancy and speaker fees from AbbVie, Eli Lilly and Company, Pfizer, Novartis and UCB Pharma. 

EBL – Research grant from GC Pharm and Eli Lilly and Company. 

EK, SS, XL, FZ, and HC – All employees and shareholders of Eli Lilly and Company 

JR – Consulting Fees from Janssen, Eli Lilly and Company, UCB, and Novartis. Research grants from Eli Lilly and Company.

About the Journal
Arthritis Care & Research is an official journal of the American College of Rheumatology (ACR), and the Association of Rheumatology Health Professionals (ARHP), a division of the College. Arthritis Care & Research is a peer-reviewed journal that publishes both original research and review articles that promote excellence in the clinical practice of rheumatology. Relevant to the care of individuals with arthritis and related disorders, major topics are evidence-based practice studies, clinical problems, practice guidelines, health care economics, health care policy, educational, social, and public health issues, and future trends in rheumatology practice. The journal is published by Wiley on behalf of the ACR. For more information, please visit the journal home page at http://wileyonlinelibrary.com/journal/acr.

About Wiley
Wiley is a global leader in research and education. Our online scientific, technical, medical, and scholarly journals, and our digital learning, assessment, certification and student-lifecycle services and solutions help universities, academic societies, businesses, governments and individuals to achieve their academic and professional goals. For more than 200 years, we have delivered consistent performance to our stakeholders. The Company's website can be accessed at www.wiley.com.

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