Xenotransplantation Literature Update: January-June 2026

Area of Science:

• Transplantation immunology
• Organ engineering
• Preclinical research

Background:

• Xenotransplantation is a promising field for addressing organ shortages.
• Recent progress involves refining techniques and understanding biological barriers.
• Challenges include immune rejection, coagulation incompatibility, and graft dysfunction.

Purpose of the Study:

• To review xenotransplantation advancements in the first half of 2026.
• To highlight progress in preclinical and early clinical studies.
• To identify persistent challenges and translational advances.

Main Methods:

• Analysis of clinical studies in living recipients and decedent models.
• Preclinical studies in pigs and nonhuman primates with genetically engineered organs.
• Evaluation of advancements in pathology, diagnostics, and immunosuppression.

Main Results:

• Clinical studies detailed graft physiology, immune response, and early function.
• Preclinical models showed improved organ engineering with up to ten genetic edits.
• Persistent issues identified: thrombotic microangiopathy, RAS dysregulation, and hemolysis-induced ferroptosis.

Conclusions:

• Xenotransplantation progress in early 2026 was characterized by refinement.
• Translational advances include Banff guidelines, improved diagnostics, and immunosuppressive strategies.
• Further research is needed to overcome biological incompatibilities for successful xenografting.