AYLo - AutoimmunitY and Loss of y

Trial statusRecruiting
Trial phaseNot listed
Trial typeObservational
Biological sexMale
Age50+
SponsorUniversity of Bonn

About this trial

The AYLo study (AutoimmunitY and Loss of y - Investigating the Role of Hematopoietic Mutations and Mosaic Mutation in the Y Chromosome in Autoimmune Rheumatologic Diseases) aims to systematically investigate hematopoietic mutations, such as hematopoietic (mosaic) loss of the Y chromosome (mLOY), focusing on their underlying causes, pathophysiological significance, patterns of manifestation, and impact on disease progression in autoimmune, rheumatologic disorders. This research seeks to bridge existing knowledge gaps by exploring how such mutations influence immune homeostasis, cellular function, and susceptibility to inflammation-driven pathologies.

Through the integration of advanced immunological profiling, the study aspires to uncover key mechanisms that drive the initiation, progression, and complications of autoimmune rheumatic diseases. These analyses will combine single nucleotide polymorphisms (SNP) arrays, multiplex assays, transcriptomics, and flow cytometry staining of peripheral blood mononuclear cells to delineate the interplay between hematopoietic mutations and immune dysregulation.

A further objective is the development of a multimodal framework for disease-specific characterization, enabling precise mapping of mutation-driven phenotypes across diverse autoimmune conditions. This framework will incorporate clinical, molecular, and imaging data.

Additionally, the AYLo study aims to explore the potential role of mLOY and other hematopoietic mutations as biomarkers for disease stratification, prognosis, and therapeutic response. The findings may open avenues for personalized treatment approaches, leveraging the molecular insights to inform targeted interventions and improve patient outcomes in autoimmune rheumatic disorders.

By integrating translational and basic science approaches, this study has the potential to redefine current paradigms in autoimmune disease research and therapy.

Eligibility criteria

This trial accepts healthy volunteers

Qualifiers

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.

Disqualifiers

Female

< 50 years

Male

> 50 years

Trial population

The study population includes male participants aged 50 years or older, divided into two groups: individuals with specific medical conditions (cases) and healthy controls. 1. Participants must have a diagnosis confirmed by the treating physician of one or more of the following conditions: Arthritis (RA, PsA), CTD (e.g., systemic lupus erythematosus \[SLE\], systemic sclerosis, Sjögren's syndrome, mixed connective tissue diseases), vasculitis ( eosinophilic granulomatosis with polyangiitis \[eGPA\], granulomatosis with polyangiitis \[GPA\], microscopic polyangiitis \[MPA\], IgG4-related disease, GCA + PMR), sarcoidosis, COPD, ILD, asthma bronchial 2. Healthy Controls: Healthy male participants aged 50 years or older without any of the following conditions: Autoimmune or rheumatological diseases Pulmonary preconditions 3. Exclusion Criteria: For both groups, females and individuals younger than 50 years are excluded.

Trial design

Design model

Case-control

Time perspective

Prospective

Treatments tested in this trial

  • Single nucleotide polymorphisms (SNP)

    Diagnostic test

    Utilizing single nucleotide polymorphisms (SNP) genotyping mosaic loss of y (mLOY) of individual patient will be assessed.

  • 3'mRNA sequencing

    Diagnostic test

    3'mRNA sequencing analyzes gene expression profiles related to the immune response in different study cohorts, aiding in understanding the genetic underpinnings of inflammation and its association with mLOY.

  • Enzyme-linked immunosorbent assay (ELISA) and Legendplex Array

    Diagnostic test

    Used to measure cytokine levels in the serum of investigated patients, aiding in profiling inflammatory markers that are indicative of disease activity, response to treatment and consequence of mLOY..

  • Flow Cytometry

    Diagnostic test

    Employed to analyze immune cell phenotypes in investigated cohorts. This test helps identify various immune cell subsets and their activation states, which are critical for understanding disease mechanisms and its association with mLOY.

  • Laboratory assessment

    Diagnostic test

    Serum Chemistry

  • Assessment of Pulmonary Involvement

    Diagnostic test

    Results of routine clinical assessment of pulmonary involvement (such as lung ultrasound, computed tomography, chest x-ray, whole-body plethysmography) will be compared to mLOY, ELISA/ Legendplex/ flow cytometry/ transcriptome analysis results.

Treatment groups

500 Participants
are divided into 13 treatment groups

13

Treatment groups

See each treatment group below.

Group A: Giant Cell Arteritis (GCA)5 interventions
Group B: Polymyalgia Rheumatica (PMR)5 interventions
Group C: ANCA Associated Vasculitis (AAV)6 interventions
Group D: IgG4 Related Diseases5 interventions
Group E: Idiopathic Inflammatory Myopathies (IIM)6 interventions
Group F: Rheumatoid Arthritis (RA)6 interventions
Group G: Psoriatic Arthritis (PsA)6 interventions
Group H: Connective Tissue Diseases (CTD)6 interventions
Group I: Sarcoidosis6 interventions
Group J: Interstitial Lung Diseases (ILD)6 interventions
Group K: Chronic Obstructive Pulmonary Disease (COPD)6 interventions
Group L: Asthma Bronchiale6 interventions
Group M: Healthy Control Group6 interventions

Trial outcomes

Primary outcomes

1

Quantification of the fraction of hematopoietic cells exhibiting mLOY.

Detection and quantification of the fraction of hematopoietic cells exhibiting mLOY in peripheral blood using SNP. Unit of Measure: Percentage (%).

Time frame
Cross sectional. Newly diagnosed patients: At baseline and 12 months after diagnosis).

Secondary outcomes

1

Changes in Immune Cell Phenotype

Identification and quantification of immune cell subtypes, using flow cytometry. Unit of Measure: Changes in levels (percentages).

Time frame
Cross sectional. Newly diagnosed patients: At baseline and 12 months after diagnosis
2

Changes in Cytokine Profiles

Identification and quantification of cytokines using 3'-mRNA transcriptome analysis and ELISA/ Legendplex. Unit of Measure: Changes in levels (pg/mL)

Time frame
Cross sectional. Newly diagnosed patients: At baseline and 12 months after diagnosis
3

Number of Participants with Detected Pulmonary Involvement

Detection of structural anomalies in the lung in clinical routine assessment using lung ultrasound, computed tomography, chest radiography and whole-body plethysmography. Unit of Measure: Number of participants.

Time frame
Cross sectional. Newly diagnosed patients: At baseline and 12 months after diagnosis

Other outcomes

Sponsors and contacts

Click on the lead sponsor to view all of their trials.

University of Bonn

Lead sponsor

University Hospital, Bonn

Sponsor institution