What Are Symptoms of a Kidney Transplant Rejection?

Renal transplant rejection is a condition caused by an immunopathological reaction between the transplanted kidney and the recipient. Due to the differences in donor and recipient genetic backgrounds, if immunosuppressants are not used, the transplanted kidney may be "attacked" by immune-dominated lymphocyte-based immune cells and antibodies in the body, causing rejection. Renal transplant rejection includes hyperacute rejection, accelerated rejection, acute rejection, and chronic rejection.