Intestinal & Multivisceral Transplantation for Unresectable Mucinous Carcinoma Peritonei (TRANSCAPE)

"Enrolled participants will enter the active transplant waiting list within one month of signing informed consent for study participation. Participants can be listed for:~* Isolated small bowel transplant (SBT): transplantation of the donor small intestine~* Modified multivisceral tran I lant (MMVT): transplantation of the donor pancreas and small intestine, with or without stomach~* Multivisceral transplant (MVT): transplantation of the donor pancreas, small intestine, and liver, with or without stomach"

A post-transplant, steroid-free immunosuppressive regimen will be utilized and will include Alemtuzumab as Antibody Induction Therapy. Participants will be administered two doses of Alemtuzumab (30 mg IV) on days 0 and 1.

A post-transplant, steroid-free immunosuppressive regimen will be utilized and will include Tacrolimus for maintenance. Participants will have Tacrolimus for the first 3 months. Dosing of Tacrolimus will depend on participant target level, starting with 0.05 mg/Kg bid.

A post-transplant, steroid-free immunosuppressive regimen will be utilized and will include Sirolimus for maintenance. Participants will have Sirolimus after 3 months of Tacrolimus. Dosing of Sirolimus will depend on participant target level, starting with 2 mg od.