Validation of Axial Juvenile Spondyloarthropathy Criteria in Turkish Juvenile Spondyloarthropathy Patients

<b>Background:</b> Juvenile spondyloarthritis (JSpA) is a heterogeneous group of diseases. An international consensus group developed the axial juvenile SpA (AxJSpA) classification criteria for this purpose, defining a homogeneous group of patients diagnosed with jSpA and experiencing ax...

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Main Authors: Dilara Unal, Cansu Ayten Tatar, Erdal Sag, Yagmur Bayindir, Emil Aliyev, Veysel Cam, Hulya Ercan Emreol, Mehmet Orhan Erkan, Ozge Basaran, Yelda Bilginer, Seza Ozen
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Language:English
Published: MDPI AG 2025-06-01
Series:Diagnostics
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Online Access:https://www.mdpi.com/2075-4418/15/12/1498
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author Dilara Unal
Cansu Ayten Tatar
Erdal Sag
Yagmur Bayindir
Emil Aliyev
Veysel Cam
Hulya Ercan Emreol
Mehmet Orhan Erkan
Ozge Basaran
Yelda Bilginer
Seza Ozen
author_facet Dilara Unal
Cansu Ayten Tatar
Erdal Sag
Yagmur Bayindir
Emil Aliyev
Veysel Cam
Hulya Ercan Emreol
Mehmet Orhan Erkan
Ozge Basaran
Yelda Bilginer
Seza Ozen
author_sort Dilara Unal
collection DOAJ
description <b>Background:</b> Juvenile spondyloarthritis (JSpA) is a heterogeneous group of diseases. An international consensus group developed the axial juvenile SpA (AxJSpA) classification criteria for this purpose, defining a homogeneous group of patients diagnosed with jSpA and experiencing axial symptoms before the age of 18 years. <b>Aim:</b> To validate this new set of criteria in our pediatric SpA patients. <b>Methods</b>: This study was held in the Hacettepe University Department of Pediatric Rheumatology. Juvenile SpA patients suspected of axial disease diagnosed and followed at the same center between 2005 and 2024 were included. Patients who had other etiologies for axial symptoms, including chronic nonbacterial osteomyelitis, mechanical back pain–overuse injuries, amplified pain/growing pains, and SAPHO syndrome (synovitis, acne, pustulosis, hyperostosis, and osteitis) served as the control group. <b>Results:</b> In total, 123 JSpA patients and 74 controls were included in this study. The sensitivity/specificity of the new criteria were 61%/77% with an area under curve value of 0.75 (95% CI: 0.68–0.83) in our cohort. Among different criteria sets, European Spondyloarthropathy Study Group (ESSG) criteria were the most sensitive (sensitivity/specificity 91%/68%), and ASAS peripheral criteria (Assessment of SpondyloArthritis International Society) were the most specific (sensitivity/specificity 67%/84%) in our cohort when compared to ASAS axial criteria (sensitivity/specificity 74%/65%), ILAR (International League of Associations for Rheumatology) (sensitivity/specificity 85%/81%), and ILAR + SI (sacroiliitis) (sensitivity/specificity 67%/74%) criteria. <b>Conclusions:</b> The area under the curve of the new AxJSpA criteria was similar to that of the original report; however, both sensitivity and specificity were lower in our cohort, possibly due to factors like earlier disease presentation and a lower prevalence of chronic structural changes on MRI.
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spelling doaj-art-2ee1985b2a2b40019cc97bb88eae2c4e2025-08-20T02:24:25ZengMDPI AGDiagnostics2075-44182025-06-011512149810.3390/diagnostics15121498Validation of Axial Juvenile Spondyloarthropathy Criteria in Turkish Juvenile Spondyloarthropathy PatientsDilara Unal0Cansu Ayten Tatar1Erdal Sag2Yagmur Bayindir3Emil Aliyev4Veysel Cam5Hulya Ercan Emreol6Mehmet Orhan Erkan7Ozge Basaran8Yelda Bilginer9Seza Ozen10Department of Pediatric Rheumatology, Hacettepe University, 06100 Ankara, TurkeyDepartment of Pediatric Rheumatology, Hacettepe University, 06100 Ankara, TurkeyDepartment of Pediatric Rheumatology, Hacettepe University, 06100 Ankara, TurkeyDepartment of Pediatric Rheumatology, Hacettepe University, 06100 Ankara, TurkeyDepartment of Pediatric Rheumatology, Hacettepe University, 06100 Ankara, TurkeyDepartment of Pediatric Rheumatology, Hacettepe University, 06100 Ankara, TurkeyDepartment of Pediatric Rheumatology, Hacettepe University, 06100 Ankara, TurkeyDepartment of Pediatric Rheumatology, Hacettepe University, 06100 Ankara, TurkeyDepartment of Pediatric Rheumatology, Hacettepe University, 06100 Ankara, TurkeyDepartment of Pediatric Rheumatology, Hacettepe University, 06100 Ankara, TurkeyDepartment of Pediatric Rheumatology, Hacettepe University, 06100 Ankara, Turkey<b>Background:</b> Juvenile spondyloarthritis (JSpA) is a heterogeneous group of diseases. An international consensus group developed the axial juvenile SpA (AxJSpA) classification criteria for this purpose, defining a homogeneous group of patients diagnosed with jSpA and experiencing axial symptoms before the age of 18 years. <b>Aim:</b> To validate this new set of criteria in our pediatric SpA patients. <b>Methods</b>: This study was held in the Hacettepe University Department of Pediatric Rheumatology. Juvenile SpA patients suspected of axial disease diagnosed and followed at the same center between 2005 and 2024 were included. Patients who had other etiologies for axial symptoms, including chronic nonbacterial osteomyelitis, mechanical back pain–overuse injuries, amplified pain/growing pains, and SAPHO syndrome (synovitis, acne, pustulosis, hyperostosis, and osteitis) served as the control group. <b>Results:</b> In total, 123 JSpA patients and 74 controls were included in this study. The sensitivity/specificity of the new criteria were 61%/77% with an area under curve value of 0.75 (95% CI: 0.68–0.83) in our cohort. Among different criteria sets, European Spondyloarthropathy Study Group (ESSG) criteria were the most sensitive (sensitivity/specificity 91%/68%), and ASAS peripheral criteria (Assessment of SpondyloArthritis International Society) were the most specific (sensitivity/specificity 67%/84%) in our cohort when compared to ASAS axial criteria (sensitivity/specificity 74%/65%), ILAR (International League of Associations for Rheumatology) (sensitivity/specificity 85%/81%), and ILAR + SI (sacroiliitis) (sensitivity/specificity 67%/74%) criteria. <b>Conclusions:</b> The area under the curve of the new AxJSpA criteria was similar to that of the original report; however, both sensitivity and specificity were lower in our cohort, possibly due to factors like earlier disease presentation and a lower prevalence of chronic structural changes on MRI.https://www.mdpi.com/2075-4418/15/12/1498axial spondyloarthritisclassificationarthritisspondyloarthropathiesenthesitis
spellingShingle Dilara Unal
Cansu Ayten Tatar
Erdal Sag
Yagmur Bayindir
Emil Aliyev
Veysel Cam
Hulya Ercan Emreol
Mehmet Orhan Erkan
Ozge Basaran
Yelda Bilginer
Seza Ozen
Validation of Axial Juvenile Spondyloarthropathy Criteria in Turkish Juvenile Spondyloarthropathy Patients
Diagnostics
axial spondyloarthritis
classification
arthritis
spondyloarthropathies
enthesitis
title Validation of Axial Juvenile Spondyloarthropathy Criteria in Turkish Juvenile Spondyloarthropathy Patients
title_full Validation of Axial Juvenile Spondyloarthropathy Criteria in Turkish Juvenile Spondyloarthropathy Patients
title_fullStr Validation of Axial Juvenile Spondyloarthropathy Criteria in Turkish Juvenile Spondyloarthropathy Patients
title_full_unstemmed Validation of Axial Juvenile Spondyloarthropathy Criteria in Turkish Juvenile Spondyloarthropathy Patients
title_short Validation of Axial Juvenile Spondyloarthropathy Criteria in Turkish Juvenile Spondyloarthropathy Patients
title_sort validation of axial juvenile spondyloarthropathy criteria in turkish juvenile spondyloarthropathy patients
topic axial spondyloarthritis
classification
arthritis
spondyloarthropathies
enthesitis
url https://www.mdpi.com/2075-4418/15/12/1498
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