Abstract
Purpose of Review
Osteoporosis in axial spondyloarthritis may be modified by therapy. The purpose of this systematic review is to describe (i) the effect of TNFi on BMD, (ii) the effect of secukinumab on BMD, and (iii) the effect of secukinumab on radiographic disease progression in axSpA.
Recent Findings
We searched PubMed, Embase, and Cochrane using the following retrieval languages: spondyloarthritis, ankylosing spondylitis, TNF, IL-17, x-rays, and osteoporosis. Twenty-nine studies were included; 27 re: TNFi and BMD, and 2 re: IL-17 blockers and x-ray progression. TNFi over 2–4 years increased BMD of the lumbar spine (3.2–14.9%) and hip (2.26–4.7%) without reducing vertebral fractures. Secukinumab reduced radiographic progression; none (73%) and minimal (79%) at 4 years. No data on IL-17 blockade and bone were found.
Summary
TNFi therapy improves bone density but not vertebral fracture rates. Secukinumab improves symptoms and may slow radiographic progression. Data is lacking regarding the effects of secukinumab on BMD and fractures. These are important questions which may impact the choice of therapy.
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Abbreviations
- axSpA:
-
Axial spondyloarthritis
- AS:
-
Ankylosing spondylitis
- TNFi:
-
Tumor necrosis factor (TNF) inhibitor
- RCT:
-
Randomized control trial
- PRISMA:
-
Preferred reporting items for systematic review and meta-analysis
- mSASSS:
-
Modified Stoke Ankylosing Spondylitis Spinal Score
- ACR:
-
American College of Rheumatology
- LS:
-
Lumbar spine
- TH:
-
Total hip
- FN:
-
Femoral neck
- VFx:
-
Vertebral fractures
- OTW:
-
Occiput to wall
- BASFI:
-
Bath Ankylosing Spondylitis Functional Index
- VEs:
-
Vertebral edges
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The authors thank Haley Tornberg—research assistant.
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DA, EMS, and SMG contributed to the conception and design of the review and assessed all papers, data extraction, and quality assessment. DA, EMG, RG, and SMG performed the literature search. DA drafted the paper; EMS and SMG revised the article for important intellectual content. All authors gave final approval of the version to be published.
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Dr. Goodman reports grants from Novartis, personal fees from Novartis, personal fees from Pfizer, personal fees from UCB, grants from Horizon, outside the submitted work.
Dr. Ashany reports grants from Novartis, outside the submitted work.
Emily M. Stein and Rie Goto declare that they have no conflict of interest.
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Ashany, D., Stein, E.M., Goto, R. et al. The Effect of TNF Inhibition on Bone Density and Fracture Risk and of IL17 Inhibition on Radiographic Progression and Bone Density in Patients with Axial Spondyloarthritis: a Systematic Literature Review. Curr Rheumatol Rep 21, 20 (2019). https://doi.org/10.1007/s11926-019-0818-9
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DOI: https://doi.org/10.1007/s11926-019-0818-9