Last reviewed · How we verify
NCT04474392: SPARO
Sputum Studies of Anti-Citrullinated Protein Antibodies (ACPA) and Rheumatoid Arthritis (RA) Origins
trial testing N/A (Observational Study) in Rheumatoid Arthritis in 340 participants. Status unknown.
14 July 2025
Quick facts
| Lead sponsor | University of Colorado, Denver |
|---|---|
| Status | Status unknown |
| Study type | OBSERVATIONAL |
| Enrollment | 340 |
| Start date | 1 August 2020 |
| Primary completion | 14 July 2025 |
| Estimated completion | 14 July 2025 |
| Sites | 1 location across United States |
Drugs / interventions tested
- N/A (Observational Study)
Conditions studied
- Rheumatoid Arthritis — all drugs for Rheumatoid Arthritis →
Sponsor
University of Colorado, Denver
Who can join
Adults 18 to 100, any sex, with Rheumatoid Arthritis. Patients with the condition only — healthy volunteers not accepted.
Sponsor's own description
The study is designed to learn more about the causes of rheumatoid arthritis (RA). People who get RA have elevated protein markers called autoantibodies in their blood years before initial symptoms of arthritis. The goal of this study is to learn more about how autoantibodies in RA might be related to inflammation in the lungs.
Publications & conference data
No peer-reviewed publications indexed yet for this trial.
Verify or expand the search:
- PubMed search for NCT04474392
- Europe PMC full search
- ASCO Meeting Library
- ESMO Meeting Library
- bioRxiv preprints
- medRxiv preprints
- Google Scholar
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Verify against primary sources
- ClinicalTrials.gov — authoritative US registry record
- WHO ICTRP — international registry index
- EU Clinical Trials Register
- Sponsor press releases (Google)
- Trial protocol + status: ClinicalTrials.gov NCT04474392 (US National Library of Medicine, public domain)
- Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
- Sponsor: as reported to ClinicalTrials.gov by University of Colorado, Denver
- Last refreshed: 14 June 2022
Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT04474392.
Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing