Follow-up of patients with inflammatory myopathies and a biobank

Follow-up of a Cohort of Patients With Inflammatory Myopathies Associated With a Biobank: MASC 2 Project (Myositis, Muscles, DNA/RNA Serum Cells)

Observational Assistance Publique - Hôpitaux de Paris · NCT05454527

This study is trying to gather information from people with inflammatory myopathies to better understand the disease and find new treatments.

Quick facts

Study typeObservational
Enrollment4000 (estimated)
Ages18 Years and up
SexAll
SponsorAssistance Publique - Hôpitaux de Paris Academic / other
Locations2 sites (Paris and 1 other locations)
Trial IDNCT05454527 on ClinicalTrials.gov

What this trial studies

This observational study aims to create a cohort of patients with inflammatory myopathies to better understand the disease's underlying mechanisms and identify potential treatments. It will involve collecting a wide range of clinical, radiological, and biological data, including muscle biopsies and blood samples, to establish a biobank. Patients will undergo regular follow-up visits to assess muscle strength, function, and other relevant health metrics. The goal is to delineate factors contributing to myositis and improve prognostication based on various clinical variables.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older with a suspicion of myositis, including various subtypes such as dermatomyositis and polymyositis.

Not a fit: Patients under legal protection or those who oppose the use of their data will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved understanding and treatment options for patients with inflammatory myopathies.

How similar studies have performed: While myositis is a rare condition, similar cohort studies have shown promise in understanding autoimmune diseases, suggesting potential for success in this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age ≥ 18 years
* Suspicion of Myositis defined according to reference classifications: Dermatomyositis (DM), polymyositis (PM) defined as early as 1975 by Bohan and Peter, inclusion myositis (IM) according to the criteria of Griggs et al, 1995 and autoimmune necrotizing myopathy (ANM) by Hoogendijk et al, in 2004 and iatrogenic (e.g. drug-induced) myositis.
* No opposition from patients to the use of their data
* Signature of consents for the constitution of the biobank and the genetic analyses

Exclusion Criteria:

* Patients under AME
* Patients under legal protection

Where this trial is running

Paris and 1 other locations

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 Inflammatory MyositisIdiopathic Inflammatory MyositisDrug-induced Inflammatory Myositis
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.