Chronic GVHD as an autoimmune disease

Area of Science:

• Immunology
• Transplantation Medicine
• Autoimmunity

Background:

• Chronic graft-versus-host disease (GVHD) and autoimmune diseases (AD) exhibit overlapping clinical, histological, and serological features.
• Both GVHD and AD involve dysregulated immune responses leading to tissue damage, inflammation, scarring, and organ dysfunction.
• Genetic predisposition is associated with both GVHD and AD.

Purpose of the Study:

• To explore the biological and semantic similarities and differences between chronic GVHD and AD.
• To investigate the hypothesis that some ADs may represent fetal-versus-maternal chronic GVHD.
• To analyze epitope-specific autoaggressive phenomena and widespread GVHD manifestations in comparison to de novo ADs.

Main Methods:

• Comparative analysis of clinical, histological, and serological manifestations of GVHD and AD.
• Review of studies suggesting potential overlap, including fetal-versus-maternal GVHD.
• Examination of specific conditions like immune thrombocytopenic purpura (ITP) post-hematopoietic stem-cell transplantation (HCT) and scleroderma-like symptoms.

Main Results:

• Significant overlap exists between chronic GVHD and AD, potentially indicating more than semantic differences.
• Evidence suggests some ADs might be a form of chronic GVHD.
• While some manifestations like ITP post-HCT suggest loss of self-tolerance, widespread GVHD symptoms differ from de novo scleroderma, SLE, and RA.

Conclusions:

• Chronic GVHD and AD share fundamental immune dysregulation pathways.
• The distinction between GVHD and AD may be less biological and more semantic.
• Further research is needed to fully elucidate the relationship and potential shared mechanisms between these conditions.