Clinical trial Recruiting at 1 site Observational Ages 50 and up Men only

Investigating the Role of Y Chromosome Mutations in Autoimmune Diseases

Official title: Investigating the Role of Hematopoietic Mutations and Mosaic Mutation in the Y Chromosome in Autoimmune Rheumatologic Diseases

Run by University of Bonn · NCT06696027 · Data updated 2026-11-12

This study is trying to see how changes in the Y chromosome might affect the immune system and contribute to autoimmune diseases like Giant Cell Arteritis and Polymyalgia Rheumatica.

More Rheumatoid Arthritis (RA) trials

Quick facts

Study typeObservational
Ages50 Years and up
SexMen only
Enrollment500 (estimated)
SponsorUniversity of Bonn
Academic / other
Locations1 site (Bonn, North Rhine-Westphalia)
StatusRecruiting
StartedNovember 15, 2024
Main results expectedDecember 2025
Study endsJuly 2026
Registry record updatedApril 10, 2025
Trial IDNCT06696027 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are males over 50 years old diagnosed with specific autoimmune or rheumatologic conditions.

Probably not a fit

Patients who are female or under 50 years old will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

The AYLo study focuses on understanding the impact of hematopoietic mutations, particularly the loss of the Y chromosome, on autoimmune rheumatologic diseases such as Giant Cell Arteritis and Polymyalgia Rheumatica. By employing advanced techniques like SNP arrays, mRNA sequencing, and flow cytometry, the study aims to uncover how these mutations affect immune function and disease progression. This observational research seeks to fill knowledge gaps regarding the mechanisms driving inflammation and susceptibility in these conditions.

Why it matters

Potential benefit: If successful, this study could lead to improved understanding and management of autoimmune diseases, potentially enhancing patient outcomes.

How similar studies have gone: While the specific focus on Y chromosome mutations in this context may be novel, similar studies exploring genetic factors in autoimmune diseases have shown promising results.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Male
* \> 50 years
* Diagnosis of arthritis (RA, PsA), collagen diseases (SLE, systemic sclerosis, Sjögren's syndrome, mixed connective tissue diseases), vasculitis (eGPA, GPA, MPA, IgG4-related disease, GCA, PMR), sarcoidosis, COPD, ILD or asthma bronchiale confirmed by the treating physician.

Exclusion Criteria:

* Female
* \< 50 years

Inclusion Criteria (Healthy controls):

* Male
* \> 50 years

Exclusion Criteria (Healthy controls):

* Female
* \< 50 years
* autoimmune, rheumatological diease
* pulmonary precondition

Where it's running

  • Department of Rheumatology
    Bonn, North Rhine-Westphalia, Germany
    Recruiting

Study contacts

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.