Denna sida har översatts automatiskt och översättningens korrekthet kan inte garanteras. Vänligen se engelsk version för en källtext.

Multicenter Validation of the 2025 Classification Criteria for Axial Spondyloarthritis (MVAS2025)

21 juli 2026 uppdaterad av: Jian Zhu, Chinese PLA General Hospital

This study aims to validate the 2025 ASAS-SPARTAN revised classification criteria for axial spondyloarthritis (axSpA) in the Chinese population through a multicenter, prospective, cross-sectional observational study.

Axial spondyloarthritis is a chronic inflammatory disease primarily affecting the spine and sacroiliac joints, causing back pain and stiffness. Early and accurate diagnosis is essential for timely treatment and improved patient outcomes. The 2025 ASAS-SPARTAN revised classification criteria were recently developed by the Assessment of SpondyloArthritis International Society (ASAS) and the SpondyloArthritis Research and Treatment Network (SPARTAN) to improve diagnostic accuracy and reduce over-diagnosis, with preset targets of sensitivity ≥75% and specificity ≥90%. However, the original validation study included only 71 Chinese patients out of 1,015 total participants, and racial differences in susceptibility genes, living environments, and socioeconomic-cultural backgrounds may affect the criteria's performance in Chinese patients.

This study will enroll patients with chronic back pain (CBP) lasting ≥3 months and onset age ≤45 years from multiple hospitals in China. All participants will undergo comprehensive diagnostic assessments including clinical history, physical examination, CRP testing, HLA-B27 testing, pelvic X-ray, and sacroiliac joint MRI. The 2025 ASAS-SPARTAN criteria will be applied to evaluate diagnostic performance, and results will be compared with the 2009 ASAS classification criteria and clinicians' gold-standard diagnoses.

The primary objective is to validate the sensitivity, specificity, and internal scoring rationality of the 2025 ASAS-SPARTAN criteria in Chinese axSpA patients. The secondary objective is to assess the concordance between the 2025 and 2009 ASAS criteria and analyze reasons for any discrepancies.

The findings will provide evidence for Chinese clinicians to select appropriate classification tools, reduce over-diagnosis of axSpA, and alleviate the burden on the healthcare system.

Studieöversikt

Status

Rekrytering

Betingelser

Intervention / Behandling

Detaljerad beskrivning

This is a multicenter, observational, cross-sectional study conducted across 4 hospitals in China, led by the Department of Rheumatology and Immunology at Chinese PLA General Hospital (First Medical Center).

Study Design:

  • Prospective enrollment of eligible patients over 12 months
  • No intervention; all diagnostic and treatment decisions are made by clinicians based on clinical judgment
  • Data collection through standardized electronic case report forms (eCRF) using EpiData platform

Study Population:

  • Adults with chronic back pain (CBP) duration ≥3 months
  • Back pain onset age ≤45 years
  • Patients presenting to rheumatologists without confirmed diagnosis of axSpA, AS, or other rheumatic diseases
  • Patients willing to complete full diagnostic assessments and provide informed consent

Assessments:

  • Clinical history and physical examination
  • Laboratory tests: complete blood count, liver and renal function, HLA-B27, ESR, CRP
  • Imaging: pelvic and whole-spine X-ray, sacroiliac joint MRI, sacroiliac joint CT; additional imaging (hip/spine MRI or CT, joint ultrasound, bone scan) as clinically indicated

Diagnostic Evaluation:

  • Clinicians will establish a gold-standard diagnosis based on comprehensive clinical, laboratory, and imaging findings
  • Both 2025 ASAS-SPARTAN and 2009 ASAS classification criteria will be applied to each patient
  • Statistical analysis will evaluate sensitivity, specificity, and concordance between criteria

Sample Size: 247 patients (calculated using PASS 2021 software for one-sample sensitivity and specificity confidence intervals, based on expected sensitivity 75%, specificity 90%, and prevalence 0.7)

Statistical Methods:

  • Continuous variables: mean ± standard deviation, independent sample t-test
  • Categorical variables: relative frequencies, Chi-square test
  • Multivariate logistic regression and Cox regression for prognostic factor analysis
  • P < 0.05 considered statistically significant

Data Management:

  • Standardized eCRF with defined variable definitions and coding rules
  • Password-protected online data entry platform
  • De-identification of personal information for publication and data sharing
  • Compliance with GCP, Declaration of Helsinki, and Chinese regulatory requirements

Studietyp

Observationell

Inskrivning (Beräknad)

247

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studiekontakt

Studera Kontakt Backup

  • Namn: Jian Zhu

Studieorter

  • Kina
    • Beijing Municipality
      • Beijing, Beijing Municipality, Kina, 100853
        • Rekrytering
        • Chinese PLA General Hospital
        • Kontakt:

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

  • Vuxen

Tar emot friska volontärer

Nej

Testmetod

Icke-sannolikhetsprov

Studera befolkning

Adults with chronic back pain (duration ≥3 months, onset age ≤45 years) who are suspected of having axial spondyloarthritis and present to rheumatology clinics for diagnostic evaluation. Participants must be willing to undergo comprehensive clinical, laboratory, and imaging assessments.

Beskrivning

Inclusion Criteria:

  • 1. Presence of current chronic back pain with duration ≥3 months and without a definitive diagnosis 2. Age at onset of back pain ≤45 years 3. Presentation to a rheumatologist for evaluation of suspected axial spondyloarthritis or related conditions, without a confirmed diagnosis of axSpA or other rheumatic diseases 4. Willingness to complete comprehensive diagnostic assessments including clinical history, physical examination, CRP testing, HLA-B27 testing, pelvic X-ray, and sacroiliac joint MRI (recent imaging may be acceptable if completed within appropriate timeframe) 5. Voluntary participation with provision of signed electronic informed consent

Exclusion Criteria:

  • 1. Inability to communicate due to cognitive impairment, visual impairment, or other factors affecting self-assessment 2. Confirmed diagnosis of axial spondyloarthritis (axSpA), ankylosing spondylitis (AS), or other established rheumatic diseases (e.g., rheumatoid arthritis, psoriatic arthritis) 3. Back pain duration <3 months or age at onset >45 years 4. Refusal or inability to complete full diagnostic evaluation due to medical contraindications (e.g., metallic implants preventing MRI, severe hepatic or renal dysfunction precluding laboratory testing) 5. Presence of clearly identified non-SpA causes of chronic back pain with established diagnosis, including lumbar disc herniation, spinal stenosis, spinal tumors, infectious spondylitis, or osteoporotic fractures 6. Failure to provide informed consent, inability to cooperate with study follow-up, or inability to provide complete data

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

Kohorter och interventioner

Grupp / Kohort
Intervention / Behandling
Chronic Back Pain Patients
Patients with chronic back pain (duration ≥3 months, onset age ≤45 years) who are suspected of having axial spondyloarthritis and undergo comprehensive diagnostic assessments including clinical evaluation, laboratory tests, and imaging studies.
Övrig: Diagnostic Assessment
Comprehensive diagnostic evaluation including clinical history, physical examination, laboratory tests (CBC, liver/renal function, HLA-B27, ESR, CRP), and imaging studies (pelvic X-ray, sacroiliac joint MRI/CT). No therapeutic intervention is provided as part of this study; all diagnostic and treatment decisions are made by clinicians according to standard clinical practice

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Diagnostic accuracy of the 2025 ASAS-SPARTAN classification criteria for axial spondyloarthritis
Tidsram: At baseline (single assessment during index visit)
Sensitivity and specificity of the 2025 ASAS-SPARTAN revised classification criteria for diagnosing axial spondyloarthritis, compared against the clinician's gold-standard diagnosis based on comprehensive clinical, laboratory, and imaging assessments.
At baseline (single assessment during index visit)

Sekundära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Concordance between 2025 ASAS-SPARTAN and 2009 ASAS classification criteria
Tidsram: At baseline (single assessment during index visit)
Agreement rate (percentage of consistent diagnoses) between the 2025 ASAS-SPARTAN revised criteria and the 2009 ASAS classification criteria for axial spondyloarthritis, including analysis of reasons for discordant cases.
At baseline (single assessment during index visit)

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Sponsor

Chinese PLA General Hospital

Samarbetspartners

Beijing Electric Power Hospital
The General Hospital of Central Theater Command

Utredare

  • Huvudutredare: Jian Zhu, Chinese PLA General Hospital, Department of Rheumatology and Immunology

Publikationer och användbara länkar

Den som ansvarar för att lägga in information om studien tillhandahåller frivilligt dessa publikationer. Dessa kan handla om allt som har med studien att göra.

Allmänna publikationer

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Faktisk)

10 april 2026

Primärt slutförande (Beräknad)

10 april 2027

Avslutad studie (Beräknad)

10 april 2027

Studieregistreringsdatum

Först inskickad

21 juli 2026

Först inskickad som uppfyllde QC-kriterierna

21 juli 2026

Första postat (Faktisk)

24 juli 2026

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

24 juli 2026

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

21 juli 2026

Senast verifierad

1 juli 2026

Mer information

Termer relaterade till denna studie

Nyckelord

Ytterligare relevanta MeSH-villkor

Andra studie-ID-nummer

  • ChinaPLAGH-axSpA

Plan för individuella deltagardata (IPD)

Planerar du att dela individuella deltagardata (IPD)?

NEJ

IPD-planbeskrivning

Individual participant data will not be made available outside the research team. This decision is based on institutional data management policies, requirements for protection of patient privacy and personal information under Chinese regulations, and compliance with national laws governing human genetic resources. De-identified aggregate data and study results will be published in peer-reviewed journals and presented at scientific conferences.

Läkemedels- och apparatinformation, studiedokument

Studerar en amerikansk FDA-reglerad läkemedelsprodukt

Nej

Studerar en amerikansk FDA-reglerad produktprodukt

Nej

Denna information hämtades direkt från webbplatsen clinicaltrials.gov utan några ändringar. Om du har några önskemål om att ändra, ta bort eller uppdatera dina studieuppgifter, vänligen kontakta register@clinicaltrials.gov. Så snart en ändring har implementerats på clinicaltrials.gov, kommer denna att uppdateras automatiskt även på vår webbplats .

Prenumerera