Please select the eligibility criteria that correspond to the clinical trial below.
Title: Prospective, Randomized 2 x 2 Factorial Trial of Rabbit Anti-thymocyte Globulin Induction (Single vs. Alternate Day Administration) at Renal Transplantation, With Delayed Calcineurin-inhibitor Withdrawal vs. Minimization
Brief Summary: This 2 x 2 sequential factorial study evaluates two potential improvements to the standard immunosuppression regimen used at the investigators' institution to prevent rejection of transplanted kidneys. These two potential improvements are each applied in sequence to half of the study patients, creating 4 study arms; the other half receive the standard treatment. The two potential improvements are:

1. Administering the immunosuppression induction agent rATG ("rabbit anti-thymocyte globulin") in a single dose at the time of transplantation, instead of in the usual series of 4 smaller doses over 6 days.
2. After 6 months, modifying the maintenance immunosuppression used to prevent rejection by replacing the drug tacrolimus with mycophenolate mofetil (MMF).

The two interventions, spaced sequentially six months apart, enable independent analysis of the two treatments so long as it can be shown that there is no synergistic interaction between them.


Options:
A: Inclusion Criteria:

* Primary renal transplant recipient for end-stage renal disease

Exclusion Criteria:

* Recipient age \< 18 years or \> 65 years
* Previous history of CMV disease
* Hepatitis B and C recipients
* Primary disease states that require steroids for immunosuppression
* Re-transplant with immunological cause of renal or pancreas loss
* Non heart beating donors
* Recipient of pediatric en bloc kidneys
* Recipient with a Panel Reactive Antibody (PRA) score \>75%
* Patients who have received 3 or more prior transplants, excluding pancreas
* Patients who are past recipients of other solid organ transplants
* Previous history of BK virus
* Previous treatment with Thymoglobulin
* Allergy to rabbits
* Simultaneous Kidney/Pancreas transplantation
B: Inclusion Criteria:

1. Patient has been fully informed and has signed a dated IRB approval informed consent form and is willing to follow study procedures for the extent of the study (12 months). Parent or legal guardian must provide written consent for patients \<18 years of age.
2. Age 18-75 years.
3. Weight \> 40 kg.
4. Primary or secondary renal allograft: living or deceased donor.
5. Negative standard crossmatch for T cells.
6. Women of childbearing potential will be required to have a negative qualitative serum pregnancy test and agree to use an adequate method of contraception for the study duration.
7. Males and females are to be studied equivalently as they become available for transplantation using these criteria.

Exclusion Criteria:

1. Patient has previously received or is receiving an organ transplant other than a kidney.
2. Patient is receiving an ABO incompatible donor kidney.
3. Recipient or donor is seropositive for human immunodeficiency (HIV), Hepatitis C viruses, or Hepatitis B virus antigenemia.
4. Patient has a current malignancy or a history of malignancy (within the past 5 years), except non-metastatic basal or squamous cell carcinoma of the skin that has been treated successfully, or carcinoma in situ of the cervix that has been treated successfully.
5. Patients with significant liver disease, defined as having during the past 28 days continuously elevated AST (SGOT) and/or ALT (SGPT) levels greater than 3 times the upper value of the normal range of this center.
6. Patient has uncontrolled concomitant infections and/or severe diarrhea, vomiting, active upper gastro-intestinal tract malabsorption or an active peptic ulcer or any other unstable medical condition that could interfere with study objectives.
7. Patient is currently participating in another clinical trial of an investigational drug in the 30 days prior to transplant.
8. Patient will be receiving any immunosuppressive agent other than those prescribed in the study.
9. Patient is unable to take medications orally or via nasogastric tube by the morning of the second day following completion of the transplant procedure (i.e., skin closure) (Group I only).
10. Patient is receiving or may require warfarin, fluvastatin, or herbal supplements during the study.
11. Concurrent use of astemizole, pimozide, cisapride, terfenadine, or ketoconazole.
12. Patient has a known hypersensitivity to tacrolimus, thymoglobulin, IL-2 receptor inhibitor monoclonal antibodies, sirolimus, MMF, Myfortic®, or corticosteroids.
13. Patient is pregnant or lactating.
14. Patients with a screening/baseline (or within 96 hours of transplant) total white blood cell count \<4000/mm3; platelet count \<100,000/mm3; fasting triglycerides \>400 mg/dl (\>4.6 mmol/L); fasting total cholesterol \>300 mg/dl (\>7.8 mmol/L); fasting HDL-cholesterol \<30 mg/dl; fasting LDL-cholesterol \>200 mg/dl.
15. Patient is unlikely to comply with the visits scheduled in the protocol.
16. Patient has any form of substance abuse, psychiatric disorder or a condition that, in the opinion of the investigator, may invalidate communication with the investigator.

If tacrolimus cannot be instituted for longer than 5 days postoperatively.
C: Inclusion Criteria:

* Subject capable of giving written informed consent, with end-stage kidney disease, who is a suitable candidate for primary kidney transplantation
* Male or female subject who has reached legal age in the state where they reside and is at least 18 years of age
* Deceased or living donors
* Compatible ABO blood type
* Expanded-criteria donor (ECD) kidneys with a donor grade score of ≤ 25 (as developed by Nyberg, et al.)
* If Kidneys are pumped, they must meet the following pumping parameters: resistance \<0.35 with a flow rate of \>60 ml/min.

Exclusion Criteria:

* Recipient age \>65 years
* PRA \>50%, or donor-specific antibody
* CIT \>30 hours
* Re-transplant patients
* Multi-organ transplant recipients (example: kidney/pancreas or kidney/liver)
* Renal transplant recipients planned for future pancreas transplantation
* Current unstable cardiovascular disease or history of myocardial infarction within the previous 6 months
* Current malignancy or history or malignancy (within the previous 5 years) with the exception of non-metastatic basal or squamous cell carcinoma of the skin or carcinoma in-situ of the cervix that has been treated successfully.
* Hepatitis B and C recipients or active liver disease
* HIV positive recipients
* Primary disease requiring treatment with steroids after transplantation
* Expanded-criteria donor kidneys (current UNOS criteria) with a donor grade score of \> 25
* Donation after cardiac death (DCD) donors
* Dual adult kidneys
* Recipients of pediatric (age \<12 years) unilateral or en-bloc kidneys
* Previous treatment with rATG
* Known hypersensitivity, extensive exposure, or allergy to rabbits
* Pregnant
* Any condition that in the investigator's opinion may compromise study participation (e.g., history or likelihood of non-compliance with immunosuppression regimen, protocol visits, tests, and studies)

Relative Exclusion Criteria:

* Patients with a BMI \> 37 should be considered on an individual basis based on overall health and body habitus.
D: Inclusion Criteria:

1. Patient has been fully informed and has signed a dated IRB approval informed consent form and is willing to follow study procedures for the extent of the study (36 months). Parent or legal guardian must provide written consent for patients \<18 years of age.
2. Age 16-65 years
3. Weight \> 40 kg
4. Primary renal allograft: living related (non HLA identical) and unrelated donor
5. Negative standard cross-match for T-cells. All donor-recipient pairs matched for a minimum of 1 HLA DR antigen. (Standard at our center)
6. Women of childbearing potential will be required to have a negative qualitative serum pregnancy test and agree to use an adequate method of contraception for 3 months following discontinuation of Thymoglobulin or Campath-1H
7. Males and females are to be studied equivalently as they become available for transplantation using these criteria.

Exclusion Criteria:

1. Patient has previously received or is receiving an organ transplant other than a kidney.
2. Patient is receiving an ABO incompatible donor kidney.
3. Recipient or donor is seropositive for human immunodeficiency virus (HIV), Hepatitis C viruses, or Hepatitis B virus antigenemia.
4. Patient has a current malignancy or a history of malignancy (within the past 5 years), except non-metastatic basal or squamous cell carcinoma of the skin that has been treated successfully or carcinoma in situ of the cervix that has been treated successfully.
5. Patients with significant liver disease, defined as having during the past 28 days continuously elevated AST (SGOT) and/or ALT (SGPT) levels greater than 3 times the upper value of the normal range of this center.
6. Patient has uncontrolled concomitant infections and/or severe diarrhea, vomiting, active upper gastro-intestinal tract malabsorption or an active peptic ulcer or any other unstable medical condition that could interfere with study objectives.
7. Patient is currently participating in another clinical trial of an investigational drug in the 30 days prior to transplant.
8. Patient will be receiving any immunosuppressive agent other that those prescribed in the study.
9. Patient is unable to take medications orally or via nasogastric tube by the morning of the second day following completion of the transplant procedure (i.e. skin closure).
10. Patient is receiving or may require warfarin, fluvastatin or herbal supplements during the study.
11. Concurrent use of astemizole, pimozide, cisapride, terfenadine, or ketoconazole.
12. Patient has a known hypersensitivity to Tacrolimus, Campath-1H, Thymoglobulin, Daclizumab (Zenapax®), Sirolimus, MMF or corticosteroids.
13. Patient is pregnant or lactating.
14. Patients with a screening/baseline (or within 96 hours of transplant) total white blood cell count \<4000/mm3; platelet count \<100,000/mm3; fasting triglycerides \>400 mg/dl (\>4.6 mmol/L); fasting total cholesterol \>300 mg/dl (\>7.8 mmol/L); fasting HDL-cholesterol \<30 mg/dl; fasting LDL-cholesterol \>200mg/dl.
15. Patient is unlikely to comply with the visits scheduled in the protocol.
16. Patient has any form of substance abuse, psychiatric disorder or a condition that, in opinion of the investigator, may invalidate communication with the investigator.
17. If tacrolimus cannot be instituted for longer than 5 days postoperatively.

Answer: A