Observing crystal-related arthritis conditions

Data Collection for the Constitution of an Observatory for Patients Suffering From Microcrystalline Rheumatism With Morphological Phenotyping

Observational Lille Catholic University · NCT04695028

This study is trying to learn more about conditions like gout and chondrocalcinosis by collecting information from patients and using imaging tests to see how these diseases change over time.

Quick facts

Study typeObservational
Enrollment1000 (estimated)
Ages18 Years and up
SexAll
SponsorLille Catholic University Academic / other
Locations1 site (Lomme)
Trial IDNCT04695028 on ClinicalTrials.gov

What this trial studies

This research aims to create an observatory for microcrystalline rheumatism, focusing on conditions like gout and chondrocalcinosis, at the Groupement des Hôpitaux de l'Institut Catholique de Lille. Patients already enrolled in a previous observational study will be included, along with new patients recruited during rheumatology consultations. Data on sociodemographic and clinical characteristics will be collected, and participants may undergo ultrasound and dual energy scanning for imaging. The study will track clinical and biological evolution over time to enhance understanding and management of these conditions.

Who should consider this trial

Good fit: Ideal candidates include individuals diagnosed with gout, calcium pyrophosphate dihydrate crystal deposition disease, or hydroxyapatite crystal rheumatism who require imaging.

Not a fit: Patients who refuse imaging procedures or oppose the use of their health data for research will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved diagnosis and management of crystal-related arthropathies for patients.

How similar studies have performed: Other studies have shown success in using imaging techniques to better understand and manage similar conditions, indicating a promising approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Diagnosis of gout according to American College of Rheumatology /European League Against Rheumatism (ACR/EULAR) 2015 criteria OR diagnosis of calcium pyrophosphate dihydrate crystal deposition disease (CPPD) based on EULAR 2011 recommendations OR diagnosis of hydroxyapatite crystal rheumatism (HCR) according to a typical clinical sequence and demonstration of compatible calcium deposits on imaging
* patient who will benefit or has benefited from an ultrasound and/or DECT evaluation of microcrystalline deposits
* clinical suspicion of microcrystalline rheumatism requiring further imaging to confirm the diagnosis

Exclusion Criteria:

* Refusal or contra-indication to perform ultrasound or dual energy scanning.
* Patient's opposition to the use of his or her health data for research purposes
* Patient under guardianship or curatorship
* Pregnant woman
* Person not affiliated to a social security scheme or entitled to a social security benefit

Where this trial is running

Lomme

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions GoutChondrocalcinosisHydroxyapatite
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.