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Abstract Number: 1312

What Is the Optimal Screening Strategy for Early Recognition of Spondyloarthritis in Patients with Acute Anterior Uveitis?

Judith Rademacher1, Hanna Müllner2, Dominika Pohlmann3, Valeria Rios Rodriguez1, Fabian Proft1, Mikhail Protopopov1, Susanne Lüders4, Burkhard Muche5, Laura Spiller1, Anne-Katrin Weber2, Sabrina Sron2, Hildrun Haibel6, Uwe Pleyer3 and Denis Poddubnyy7, 1Charité University Medicine Berlin, Berlin, Germany, 2Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin; Department of Gastroenterology, Infectiology and Rheumatology (including Nutrition Medicine), Berlin, Germany, 3Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin; Department of Ophthalmology, Berlin, Germany, 4Department of Gastroenterology, Infectiology and Rheumatology (including Nutrition Medicine), Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany, Berlin, Germany, 5Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Gastroenterology, Infectiology and Rheumatology (including Nutrition Medicine), Berlin, Germany, 6Department of Gastroenterology, Infectiology and Rheumatology (including Nutrition Medicine), Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany, 7Department of Rheumatology, Charité – Universitätsmedizin, Berlin, Germany

Meeting: ACR Convergence 2021

Keywords: Eye Disorders, spondyloarthritis

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Session Information

Date: Monday, November 8, 2021

Session Title: Spondyloarthritis Including PsA – Diagnosis, Manifestations, & Outcomes III: Comorbidities, Extra-muskuloskeletal Manifestations, & Related Conditions (1304–1328)

Session Type: Poster Session C

Session Time: 8:30AM-10:30AM

Background/Purpose: The diagnostic delay remains long in patients with spondyloarthritis (SpA), thus effective screening/referral strategies for early recognition are needed. Up to 40% of patients presenting with acute anterior uveitis (AAU) have an undiagnosed SpA [1]. The Dublin Uveitis Evaluation tool (DUET) was presented as a referral tool for ophthalmologists [1]. The objective of this study was to compare the performance of the DUET with a screening strategy based on the Assessment of SpondyloArthritis International Society (ASAS) referral recommendations in AAU patients (figure, [2]).
[1] Haroon M, et al. Ann Rheum Dis 2015;74:1990-5.
[2] Poddubnyy D, et al. Ann Rheum Dis 2015;74:1483-7.

Methods: A total of 207 consecutive patients with non-infectious AAU seen in the ophthalmology clinic and ophthalmological private practices were included, 189 of them completed a standardized rheumatological examination in the specialized center including imaging of sacroiliac joints (MRI performed in 185 patients, X-rays performed in 116 patients) allowing for a definite conclusion on the presence/absence of SpA. The sensitivity, specificity and positive predictive value of both referral tools were calculated. Mann Whitney U and Fisher’s exact tests were used for comparison between AAU patients with and without SpA.

Results: Out of the 189 AAU patients, 105 (56%) were diagnosed with SpA: the majority of them (n=100, 95%) had predominantly axial SpA, 5 patients solely peripheral SpA. 33 of the included 189 patients had a previous external diagnosis of SpA, however, in three out of them SpA was excluded after rheumatologist evaluation as part of the study.

Patients with underlying SpA were more often male, HLA-B27 positive and had predominantly unilateral uveitis (table 1). Though back pain was frequent in the overall study population, back pain present at inclusion as well as inflammatory back pain were significantly more prevalent in the AAU patients with SpA. Moreover, SpA patients had higher disease activity parameters and elevated inflammatory markers (both CRP and ESR) as well as reduced spinal mobility compared to patients without SpA. Patients with SpA presented more frequently with psoriasis and peripheral arthritis.

The ASAS referral tool showed a higher sensitivity (86% vs. 83%) but a lower specificity (28% vs. 41%) compared to the DUET. The positive predictive value was 58% for the ASAS tool and 62% for the DUET (table 2). Similar performances were observed when analyzing only patients without a known diagnosis of SpA (table 2).

Conclusion: We revealed a high prevalence of undiagnosed SpA in patients with acute anterior uveitis. As anticipated, the DUET strategy also including psoriasis and HLA-B27 positivity showed higher specificity for recognition of SpA than the ASAS referral tool focusing on back pain, which showed a higher sensitivity. Given the high prevalence of SpA in AAU patients, we recommend referring all AAU patients with relevant back pain for a rheumatologic evaluation.

Figure: DUET and ASAS referral tool, modified after [1,2].

Table 1. Demographic and clinical parameters of the 189 included patients with acute anterior uveitis with and without spondyloarthritis (SpA). * Mann Whitney U test for numerical and Fisher’s exact test for categorical variables. Mean is given for numerical variables together with standard deviation (SD).

Table 2. Performance of referral tools in all patients (N&#3f180) and only patients without a previously diagnosed spondyloarthritis (N&#3f148): Dublin Uveitis Evaluation Tool (DUET) versus an adaption of the Assessment of SpondyloArthritis International Society referral tool (ASAS).


Disclosures: J. Rademacher, None; H. Müllner, None; D. Pohlmann, None; V. Rios Rodriguez, None; F. Proft, Novartis, 1, 5, 6, Eli Lilly and Company, 1, 5, UCB, 1, 5, 6, AbbVie, 1, 6, Amgen, 1, 6, Bristol-Myers Squibb, 1, 6, Hexal, 1, 6, MSD, 1, 6, Pfizer, 1, 6, Roche, 1, 6; M. Protopopov, Novartis, 1, 5, 6; S. Lüders, None; B. Muche, None; L. Spiller, None; A. Weber, None; S. Sron, None; H. Haibel, Boehringer, 2, Janssen, 2, 6, MSD, 2, 6, Pfizer, 6, Novartis, 2, Roche, 2, 6, AbbVie, 6; U. Pleyer, AbbVie, 2, 6, Alcon, 6, Allergan, 2, 6, Dompé, 6, Novartis, 2, 6, Pfizer, 6, Santen, 2, 6, Shire, 6, Thea, 2, 6, Winzer, 6; D. Poddubnyy, AbbVie, 2, 5, 6, Eli Lilly and Company, 2, 5, 6, MSD, 2, 5, 6, Novartis, 2, 5, 6, Pfizer, 2, 5, 6, UCB, 2, 6, BMS, 2, 6, Roche, 2, 6.

To cite this abstract in AMA style:

Rademacher J, Müllner H, Pohlmann D, Rios Rodriguez V, Proft F, Protopopov M, Lüders S, Muche B, Spiller L, Weber A, Sron S, Haibel H, Pleyer U, Poddubnyy D. What Is the Optimal Screening Strategy for Early Recognition of Spondyloarthritis in Patients with Acute Anterior Uveitis? [abstract]. Arthritis Rheumatol. 2021; 73 (suppl 9). https://acrabstracts.org/abstract/what-is-the-optimal-screening-strategy-for-early-recognition-of-spondyloarthritis-in-patients-with-acute-anterior-uveitis/. Accessed February 4, 2023.
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