B-cell involvement in chronic graft-versus-host disease

Area of Science:

• Immunology
• Hematology
• Transplantation Medicine

Background:

• Chronic graft-versus-host disease (cGVHD) is a serious complication following allogeneic hematopoietic stem cell transplantation (allo-HSCT).
• cGVHD affects multiple organ systems and is a leading cause of morbidity and mortality in long-term allo-HSCT survivors.

Purpose of the Study:

• To review the pathogenesis of cGVHD.
• To evaluate the specific role of B cells in the development and progression of cGVHD.

Main Methods:

• Literature review of studies investigating antibody presence and B cell analysis in cGVHD patients.
• Analysis of data from studies examining B cells as immunotherapy targets.

Main Results:

• Thirty autoantibodies and 5 alloantibodies identified in cGVHD patients across 24 studies.
• Eight autoantibodies and 5 alloantibodies showed a strong association with cGVHD.
• Significant improvements in cGVHD observed with anti-CD20 antibody rituximab therapy.

Conclusions:

• B cells, along with T cells, are critically important in the pathogenesis of cGVHD.
• Further research is necessary to fully elucidate the mechanisms underlying cGVHD.
• Targeting B cells represents a promising avenue for cGVHD immunotherapy.