Preliminary experience with campath 1H (C1H) in intestinal and liver transplantation

Background. The aim of this research was to study the efficacy of campath 1H in combination with lowdose tacrolimus immunosuppression for intestinal, multivisceral, and liver transplantation. Methods. Campath 1H (0.3 mg/kg) was administered in four doses: Preoperatively, at the completion of the transplant, and on postoperative days 3 and 7. Tacrolimus levels were maintained between 5 to 10 ng/dL. Suspected or mild rejections were treated with steroids. Moderate or severe rejections were treated with OKT3. Patients. We studied three groups of patients: adult recipients of intestinal or multivisceral transplants, high-risk pediatric recipients of small-bowel or multivisceral grafts, and adult liver-transplant recipients. Results. Twenty-one adult intestinal recipients received 24 grafts. With follow-up of 2.4 to 16 months, 14 patients are alive and 14 grafts are functioning. Eleven high-risk pediatric intestinal recipients received 12 grafts. There were four mortalities in this group, and after a follow up of 1 to 8.5 months, four patients have not experienced a rejection episode. Five adult liver recipients received five grafts. With a follow-up of 3 to 6.2 months, all five patients are alive. There were no rejection episodes in this group, and none of them required steroid therapy. Conclusions. This immunosuppressive regimen allows for the avoidance of maintenance adjuvant-steroid treatment in the majority of our patients. Our preliminary data show a trend toward a reduction of the incidence and the severity of rejection episodes, although we need to follow-up larger numbers of patients to confirm these results.