Antibody-mediated Rejection in Lung Transplantation

Area of Science:

• Immunology
• Transplantation Medicine
• Pulmonary Medicine

Background:

• Increasing recognition of antibody-mediated rejection (AMR) as a significant cause of graft failure in lung transplantation.
• Current diagnostic criteria for pulmonary AMR are not well-defined, unlike in kidney and heart transplantation.
• The established four tenets of AMR are infrequently present simultaneously in lung transplant recipients.

Purpose of the Study:

• To review the progress and challenges in diagnosing pulmonary AMR.
• To discuss current and emerging therapeutic options for pulmonary AMR.
• To examine novel concepts like C4d-negative and chronic AMR.

Main Methods:

• Literature review focusing on antibody-mediated rejection in lung transplantation.
• Analysis of diagnostic criteria and therapeutic strategies.
• Discussion of emerging paradigms in AMR research.

Main Results:

• Pulmonary AMR diagnosis is complicated by the infrequent co-occurrence of all four diagnostic hallmarks.
• AMR in lung transplant recipients is often refractory to treatment, leading to graft failure and mortality.
• Progress has been made in recognizing and defining pulmonary AMR, but challenges remain.

Conclusions:

• Significant advancements are required to effectively diagnose and treat pulmonary AMR.
• Mitigating the impact of humoral immune responses is crucial for improving long-term lung transplant outcomes.
• Further research into C4d-negative and chronic AMR is warranted.