Complement Interception Across Humoral Incompatibility in Solid Organ Transplantation: A Clinical Perspective

Area of Science:

• Transplant immunology
• Complement biology

Background:

• Humoral barrier in transplantation involves donor-specific antibodies (DSAs) against HLA or ABO antigens.
• Sensitized patients with DSAs experience antibody-mediated rejection (AMR) and limited organ access.
• The complement system plays a critical role in AMR pathophysiology.

Purpose of the Study:

• To review the importance of monitoring and modulating the complement system.
• To discuss enabling transplantation across humoral incompatibility in sensitized recipients.
• To highlight complement's role in accommodation and novel therapeutics.

Main Methods:

• Literature review focusing on complement system's role in AMR.
• Analysis of complement intervention therapeutics for transplantation.
• Discussion of complement's significance in accommodation and future therapies.

Main Results:

• The complement system is central to AMR.
• Complement-targeting strategies show promise for overcoming humoral incompatibility.
• Understanding complement is key for accommodation and therapeutic development.

Conclusions:

• Monitoring and modulating the complement system are crucial for transplanting sensitized patients.
• Complement therapeutics offer new avenues for managing AMR and improving transplant outcomes.
• Further research into complement pathways and therapeutics is warranted.