Use of Sirolimus vs. Tacrolimus For African-American Renal Transplant Recipients

Study Overview
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Brief Summary
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The purpose of this study is to evaluate the efficacy of Sirolimus (Rapamune) in improving the function of the transplant kidney, without any increase in the risk of acute rejection or adverse side effects, compared with Tacrolimus (Prograf). We hypothesize that Sirolimus, as one component of a long-term steroid-free immunosuppressive regimen, will be effective in maintaining a low incidence of acute rejection and a short- and long-term graft survival comparable to Tacrolimus with better graft function in the high-risk African-American renal transplant population with immediate graft function.

Detailed Description
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It has been repeatedly demonstrated that African-American renal allograft recipients have worse graft outcomes when compared with Caucasians. This has been attributed to various immunologic and non-immunologic factors, including a greater rate of acute rejection, resistance to standard doses of calcineurin inhibitors (CNIs) and corticosteroids, different pharmacokinetic and pharmacodynamic profiles, and noncompliance. It has therefore been suggested that quadruple immunosuppression, including antilymphocyte antibodies for induction, should be used in this high-risk population to improve graft survival. CNIs are currently the mainstay of immunosuppressive regimens. Tacrolimus has been shown to be significantly more effective than Cyclosporine A in preventing acute rejection. As a result, Tacrolimus has become the CNI of choice in preventing acute rejection, and has produced similar graft survival rates at one year, with higher creatinine clearances. However, there is no report examining the efficacy of Sirolimus in improving renal function and its side effect profile when compared with Tacrolimus in renal allograft recipients, particularly in African-Americans with immediate graft function in a steroid-free environment.

Official Title
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Use of Sirolimus Vs. Tacrolimus As The Primary Agent In Immunosuppressive Regimen For African-American Renal Allograft Recipients With Immediate Graft Function: A Pilot Study

Conditions
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Kidney Transplantation

Intervention / Treatment
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* Drug: Rapamune and Prograf


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: African-American living- or deceased-donor renal transplant at least 18 years of age with current and historical negative crossmatch who demonstrate urine output > 60 ml/hr and fall in serum creatinine > 20%/day during the first 48 hours posttransplant, without need for dialysis. Exclusion Criteria: Unwillingness to participate in the study Current PRA > 20% Noncompliance with the protocol and follow-up visits Those who need to be on maintenance steroids due to underlying disease Known hypersensitivity to study drugs Pregnancy Pre-transplant leukopenia, thrombocytopenia, hypercholesterolemia, or hypertriglyceridemia despite optimal medical therapy HIV positive recipients.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Intervention/Treatment |
| --- |
|Drug: Rapamune and Prograf|nan|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Renal function at 1, 3, 6, and 12 months post transplant. |  |  | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Incidence of acute rejection. |  |  |