Investigating the Role of Y Chromosome Mutations in Autoimmune Diseases

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

Observational University of Bonn · NCT06696027

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.

Quick facts

Study typeObservational
Enrollment500 (estimated)
Ages50 Years and up
SexMale
SponsorUniversity of Bonn Academic / other
Locations1 site (Bonn, North Rhine-Westphalia)
Trial IDNCT06696027 on ClinicalTrials.gov

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.

Who should consider this trial

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

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

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 performed: 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.

Eligibility criteria

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 this trial is running

Bonn, North Rhine-Westphalia

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 Giant Cell ArteritisPolymyalgia RheumaticaANCA Associated VasculitisIdiopathic Inflammatory MyopathiesIgG4-Related DiseasesRheumatoid ArthritisPsoriatic ArthritisConnective Tissue Disease
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.