PapersFlow Research Brief
Spondyloarthritis Studies and Treatments
Research Guide
What is Spondyloarthritis Studies and Treatments?
Spondyloarthritis studies and treatments encompass research on the classification, diagnosis, and management of spondyloarthritis conditions such as ankylosing spondylitis and psoriatic arthritis, including biologic therapies like tumor necrosis factor inhibitors and interleukin-17 inhibitors, and genetic factors such as HLA-B27.
The field includes 47,290 published works on classification criteria, disease activity assessment, and treatments for spondyloarthritis. Key developments cover diagnostic criteria for ankylosing spondylitis evaluated in relatives and controls, as shown by van der Linden et al. (1984) in "Evaluation of Diagnostic Criteria for Ankylosing Spondylitis" with 5601 citations. Classification criteria for psoriatic arthritis were derived from a large international study by Taylor et al. (2006), cited 3595 times.
Topic Hierarchy
Research Sub-Topics
Axial Spondyloarthritis Classification Criteria
This sub-topic covers the development, validation, and refinement of classification criteria for axial spondyloarthritis, including imaging-based and clinical criteria like ASAS criteria. Researchers study their sensitivity, specificity, and applicability in early disease detection.
Psoriatic Arthritis Classification Criteria
This sub-topic focuses on the CASPAR criteria and other diagnostic frameworks for psoriatic arthritis, evaluating their performance across diverse populations. Researchers investigate criteria evolution and differentiation from other arthritides.
Tumor Necrosis Factor Inhibitors in Spondyloarthritis
This sub-topic examines the efficacy, safety, and long-term outcomes of TNF inhibitors like etanercept and adalimumab in treating ankylosing spondylitis and psoriatic arthritis. Researchers analyze response predictors and comparative effectiveness.
Interleukin-17 Inhibitors in Spondyloarthritis
This sub-topic explores IL-17 inhibitors such as secukinumab and ixekizumab, focusing on their role in TNF-nonresponders and skin-joint manifestations. Researchers study mechanisms, trial outcomes, and combination strategies.
HLA-B27 and Spondyloarthritis Genetics
This sub-topic investigates the role of HLA-B27 and other genetic markers in spondyloarthritis susceptibility, pathogenesis, and prognosis. Researchers conduct genome-wide association studies and functional analyses of genetic variants.
Why It Matters
Classification criteria enable accurate diagnosis of spondyloarthritis subtypes, facilitating targeted treatments that improve patient outcomes in rheumatology practice. For instance, van der Linden et al. (1984) evaluated New York and Rome criteria in "Evaluation of Diagnostic Criteria for Ankylosing Spondylitis," revealing limitations like low specificity of lumbar pain, which informs refined diagnostic approaches used clinically. Taylor et al. (2006) developed new criteria for psoriatic arthritis from prospective data on clinic attendees in "Classification criteria for psoriatic arthritis: Development of new criteria from a large international study," enhancing differentiation from other arthropathies. Rudwaleit et al. (2009) validated ASAS criteria for axial spondyloarthritis in "The development of Assessment of SpondyloArthritis international Society classification criteria for axial spondyloarthritis (part II): validation and final selection," supporting early intervention with biologics. Garrett et al. (1994) introduced the BASDAI in "A new approach to defining disease status in ankylosing spondylitis: the Bath Ankylosing Spondylitis Disease Activity Index," a reliable self-administered tool for monitoring treatment response across disease severity.
Reading Guide
Where to Start
"Evaluation of Diagnostic Criteria for Ankylosing Spondylitis" by van der Linden et al. (1984), as it provides foundational evaluation of early criteria like New York and Rome, essential for understanding diagnostic evolution in ankylosing spondylitis.
Key Papers Explained
Van der Linden et al. (1984) in "Evaluation of Diagnostic Criteria for Ankylosing Spondylitis" assessed New York criteria specificity, building toward Dougados et al. (1991) in "The European Spondylarthropathy Study Group Preliminary Criteria for the Classification of Spondylarthropathy," which expanded to broader spondylarthropathies. Taylor et al. (2006) advanced psoriatic arthritis classification in "Classification criteria for psoriatic arthritis: Development of new criteria from a large international study," paralleling Rudwaleit et al. (2009) validation of ASAS axial criteria in "The development of Assessment of SpondyloArthritis international Society classification criteria for axial spondyloarthritis (part II): validation and final selection." Garrett et al. (1994) complemented these with BASDAI in "A new approach to defining disease status in ankylosing spondylitis: the Bath Ankylosing Spondylitis Disease Activity Index," enabling activity assessment post-diagnosis.
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
Focus remains on refining classification criteria from established works like ASAS and CASPAR, as no recent preprints or news are available; ongoing validation targets non-radiographic axial spondyloarthritis and enthesitis assessment.
Papers at a Glance
| # | Paper | Year | Venue | Citations | Open Access |
|---|---|---|---|---|---|
| 1 | Evaluation of Diagnostic Criteria for Ankylosing Spondylitis | 1984 | Arthritis & Rheumatism | 5.6K | ✕ |
| 2 | International League of Associations for Rheumatology classifi... | 2004 | PubMed | 4.2K | ✕ |
| 3 | Classification criteria for psoriatic arthritis: Development o... | 2006 | Arthritis & Rheumatism | 3.6K | ✕ |
| 4 | The development of Assessment of SpondyloArthritis internation... | 2009 | Annals of the Rheumati... | 3.5K | ✓ |
| 5 | A new approach to defining disease status in ankylosing spondy... | 1994 | PubMed | 3.2K | ✕ |
| 6 | Estimates of the prevalence of arthritis and selected musculos... | 1998 | Arthritis & Rheumatism | 2.7K | ✕ |
| 7 | The European Spondylarthropathy Study Group Preliminary Criter... | 1991 | Arthritis & Rheumatism | 2.3K | ✕ |
| 8 | Treating rheumatoid arthritis to target: recommendations of an... | 2010 | Annals of the Rheumati... | 2.0K | ✓ |
| 9 | ANKYLOSING SPONDYLITIS AND HL-A 27 | 1973 | The Lancet | 1.9K | ✕ |
| 10 | A new approach to defining functional ability in ankylosing sp... | 2001 | — | 1.8K | ✕ |
Frequently Asked Questions
What are the New York diagnostic criteria for ankylosing spondylitis?
The New York criteria for ankylosing spondylitis include clinical history and radiographic findings. Van der Linden et al. (1984) evaluated them in relatives of AS patients and population controls in "Evaluation of Diagnostic Criteria for Ankylosing Spondylitis," finding the lumbar spine pain criterion lacks specificity.
How were classification criteria for psoriatic arthritis developed?
New criteria for psoriatic arthritis were constructed from prospective data on clinic attendees with PsA and other arthropathies. Taylor et al. (2006) compared existing criteria and built improved ones in "Classification criteria for psoriatic arthritis: Development of new criteria from a large international study."
What is the BASDAI used for in ankylosing spondylitis?
The Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) assesses disease activity in AS. Garrett et al. (1994) developed it as a user-friendly, reliable, and sensitive self-administered instrument in "A new approach to defining disease status in ankylosing spondylitis: the Bath Ankylosing Spondylitis Disease Activity Index."
What do ASAS criteria cover for axial spondyloarthritis?
ASAS criteria for axial spondyloarthritis were validated and finalized through international study. Rudwaleit et al. (2009) detailed this process in "The development of Assessment of SpondyloArthritis international Society classification criteria for axial spondyloarthritis (part II): validation and final selection."
What role does HLA-B27 play in ankylosing spondylitis?
HLA-B27 associates strongly with ankylosing spondylitis. Brewerton et al. (1973) established this link in "ANKYLOSING SPONDYLITIS AND HL-A 27."
What are the European Spondylarthropathy Study Group criteria?
Preliminary criteria classify spondylarthropathy beyond individual disorders like sero-negative oligoarthritis and heel pain. Dougados et al. (1991) proposed them in "The European Spondylarthropathy Study Group Preliminary Criteria for the Classification of Spondylarthropathy."
Open Research Questions
- ? How can specificity of lumbar pain criteria be improved for early ankylosing spondylitis diagnosis?
- ? What refinements are needed in ASAS criteria to better distinguish axial spondyloarthritis from non-radiographic forms?
- ? How do genetic factors like HLA-B27 interact with environmental triggers in spondyloarthritis onset?
- ? Which combinations of biologic therapies optimize outcomes in psoriatic arthritis with enthesitis?
- ? How can disease activity indices like BASDAI be adapted for diverse spondyloarthritis phenotypes?
Recent Trends
The field holds steady at 47,290 works with no specified 5-year growth rate; high citation persistence is evident in top papers like van der Linden et al. at 5601 citations and Petty et al. (2004) at 4206 for juvenile criteria, indicating sustained reliance on classification standards amid absence of recent preprints or news.
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