calcineurin free immunosuppression in renal transplant recipients

Conditions: Kidney Transplantation; Chronic Kidney Disease

Summary: the main purpose of this study is to obtain preliminary information on the efficacy, safety and cost of two regimens, rapamycin / mmf / steroid therapy and cyclosporine a neoral / mmf / steroid therapy, used in the prevention of acute rejection following renal transplantation.

this pilot study is designed to show differences in efficacy, safety and cost between the two regimens. its main purpose is to provide information, if calcineurin free immunosuppressive treatment is a valuable alternative in the treatment of de novo kidney transplant recipients. furthermore, by investigating the side effects in both arms it will be possible to decide, if the absence of calcineurin inhibition and lack of nephrotoxicity will outweigh the adverse effects of rapamycin. with the obtained information it will be possible to plan a larger trial, which is warranted to compare the mentioned treatment regimens in more detail.

Eligibility criteria:
inclusion criteria: * male or female patients between 15 and 75 years of age, regardless of race. * female patients of child bearing age agree to maintain effective birth control practice during the study. * patient has end stage kidney disease and is a suitable candidate for primary renal transplantation or retransplantation as assessed by the transplantation center. * patient has been fully informed and has given written or independent person witnessed oral informed consent. exclusion criteria: * patient is pregnant or breastfeeding. * patient has a low immunological risk constellation, defined by receiving a kidney from a hla-identical related living donor. * patient has a high immunological risk constellation, defined as having within the previous three years a measured pra grade of ≥25% and/or having a previous graft survival shorter than 3 years due to rejection. * patient and donor have a positive t or b-cell crossmatch. * patient and donor are abo incompatible. * age of donor \> 68 years. * cold ischemia time \> 36 hours. * patient has leucopenia, defined as having at transplantation less than 3000/mm3 leukocytes. * patient has thrombocytopenia, defined as having at transplantation less than 75000/mm3 thrombocytes. * patient is allergic or intolerant to cremophor rh 60 or structurally related compounds, steroids, cyclosporine a neoral, rapamycin or mmf. * patient requires initial sequential or parallel therapy with immunosuppressive antibody preparation(s). * patient or donor is known to be hiv positive. * patient has significant liver disease, defined as having during the past 28 days continuously asat (sgot) and/or alat (sgpt) levels greater than 3 fold of the upper value of the normal range of the investigational site. * patient with malignancy or history of malignancy ≥ 2 years, except non metastatic basal or squamous cell carcinoma of the skin that has been treated successfully. * patient has significant, uncontrolled concomitant infections and/or severe diarrhea, vomiting, or active peptic ulcer. * patient is taking or has been taking an investigational drug in the past 28 days. * patient has previously received or is receiving another organ transplant other than kidney. * patient is unlikely to comply with the visits schedule in the protocol.

Keywords: kidney transplantation calcineurin inhibitor free protocol biopsy cyclosporin a sirolimus