E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Subjects who received a kidney transplant |
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MedDRA Classification |
E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
The primary objective is to assess the effects of a belatacept-based immunosuppressive regimen relative to a CNI-based immunosuppressive regimen on the change in calculated GFR from baseline to 12 months post-randomization. |
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E.2.2 | Secondary objectives of the trial |
• Assess the incidence and severity of acute rejection (AR) at 6 and 12 months post-randomization • Assess the change in calculated glomerular filtration rate (GFR) from baseline to 6 months • Assess the incidence of discontinuation of study medication or dose alteration due to declining renal function at 6 and 12 months • Assess the incidence of death and graft loss at 6 and 12 months • Assess the change in serum creatinine (SCr) from baseline to 6 and 12 months • Assess the incidence of new onset diabetes at 6 and 12 months • Assess the incidence of human leukocyte antigen (HLA) antibodies at baseline (randomization) and at 6 and 12 months • Assess QoL at baseline (randomization) and at 6 and 12 months • Assess safety and tolerability • Overall safety and tolerability of a belatacept-based immunosuppressive regimen |
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E.2.3 | Trial contains a sub-study | Yes |
E.2.3.1 | Full title, date and version of each sub-study and their related objectives |
Comprehensive PK assessment will be performed under a separate sub-study protocol. The PK parameters related to this sub-study will be reported separately. Sparse PK samples will be collected from all belatacept-treated subjects in the main study at the following time points: • Pre-dose serum samples at Weeks 4, 24, and 52 • One hour after start of infusion (ie, 30 minutes after infusion) at Week 20. Additionally, a blood sample for PK analysis should be obtained at any time a rejection episode is suspected. If a rejection is suspected at the time of an infusion, obtain the PK sample prior to belatacept infusion. |
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E.3 | Principal inclusion criteria |
1) The subject is willing to provide signed written informed consent 2) Subjects must be a recipient of a renal allograft from a living donor or a deceased donor at least 6 months, but not longer than 36 months, prior to randomization 3) Subjects must be receiving a CNI-based (CsA [any formulation] or TAC) immunosuppressive regimen 4) The dose of CNI must have been stable over the month prior to randomization a) For subjects receiving CsA, trough serum concentration at the time of enrollment must be 100-250 ng/mL (based on screening/baseline central laboratory results) b) For subjects receiving TAC, trough serum concentration at the time of enrollment must be 5-10 ng/mL (based on screening/baseline central laboratory results) 5) Subjects must be receiving adjunctive background maintenance immunosuppression with MMF, MPA, SRL, or AZA a) Subjects receiving MMF must have received a minimum total daily dose of 1.5 g for the month prior to randomization (up to 3 missed doses are acceptable provided doses were not missed due to drug intolerance) b) Subjects receiving MPA must have received a minimum total daily dose of 1080 mg for the month prior to randomization (up to 3 missed doses are acceptable provided doses were not missed due to drug intolerance) c) Subjects receiving AZA must have received a minimum daily dose of 50 mg for the month prior to randomization (up to 3 missed doses are acceptable provided doses were not missed due to drug intolerance) d) Subjects receiving SRL must have a trough serum concentration at the time of enrollment of 5-15 ng/mL (based on screening/baseline central laboratory results) 6) If subjects are receiving concomitant corticosteroids (steroid use is not required), the dose of corticosteroid must have been stable over the month prior to randomization with no anticipated dose alteration in the next 6 months 7) Subjects must have a calculated GFR ≥ 35 and ≤ 75 mL/min/1.73 m2 (MDRD formula) at the time of enrollment (based on screening/baseline central laboratory results) 8) Men and women, ages 18 years and older, inclusive 9) WOCBP must be using an adequate method of contraception to avoid pregnancy throughout the study and for up to 8 weeks after the study in such a manner that the risk of pregnancy is minimized. |
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E.4 | Principal exclusion criteria |
1) WOCBP who are unwilling or unable to use an acceptable method to avoid pregnancy for the entire study period and for up to 8 weeks after the last infusion of study medication 2) WOCBP using a prohibited contraceptive method 3) Women who are pregnant or breastfeeding 4) Women with a positive pregnancy test on enrollment or prior to study drug administration 5) Subjects with underlying renal disease of: a) Primary focal segmental glomerulosclerosis b) Type I or II membranoproliferative glomerulonephritis c) Hemolytic uremic syndrome (HUS)/thrombotic thrombocytopenic purpura syndrome 6) Subjects expected to undergo weaning of immunosuppressive therapy during the period of the study 7) Subjects with a pre-transplant panel reactive antibodies (PRA) ≥ 50% 8) Subjects with previous graft loss due to acute rejection (AR) 9) Subjects whose SCr at enrollment is over 30% higher than 3 months (± 4 weeks) prior to randomization 10) Subjects with an episode of AR in the last 3 months. Subjects who have had an episode of AR are required to have had clinical resolution for at least 3 months prior to randomization 11) Subjects who have had a Banff 97 Grade IIA or greater AR (or equivalent), steroid-resistant AR or have received lymphocyte-depleting agents, plasmapheresis, or rituximab for the treatment of AR since transplantation of current allograft 12) Subjects who have experienced more than 1 episode of rejection of the current allograft 13) Subjects with a biopsy of the current allograft staining C4d positive. Neither a biopsy nor C4d staining is required for entry into the study 14) Subjects who have experienced complications of anastomotic stenosis or stricture (vascular or ureteral) 15) Subjects who had a positive T-cell or B-cell crossmatch 16) Subjects who have documented BK virus (polyoma virus) nephropathy (biopsy is not required for enrollment) 17) Subjects who have documented evidence of recurrence of the primary cause of end-stage renal disease (ESRD) in their current or in a past renal allograft 18) Subjects with multiple solid organ (heart, liver, pancreas) or cell (islet, bone marrow, stem cell) transplants 19) Subjects who received paired kidneys (dual or en bloc kidney transplants) 20) Subjects who are known hepatitis C antibody-positive or PCR-positive for hepatitis C (neither hepatitis C antibody or PCR for hepatitis C testing is required for entry into the study) 21) Subjects who are known hepatitis B surface antigen-positive or PCR-positive for hepatitis B (neither hepatitis B surface antigen or PCR for hepatitis B testing is required for entry into the study) 22) Subjects with known HIV infection. HIV testing is not required for entry into the study 23) Subjects with a chest radiograph (posterior-anterior and lateral views) consistent with an acute lung parenchymal process, malignancy, or active tuberculosis. Subjects must have a chest radiograph within 2 months prior to randomization 24) Subjects with any significant infection
Medical History and Concurrent Diseases 25) Subjects whose life expectancy is severely limited by disease state or other underlying medical condition 26) Subjects with a history of cancer (other than non-melanoma skin cell cancers cured by local resection) within the last 5 years 27) Subjects with a history of substance abuse (drug or alcohol) within the past 5 years, or psychotic disorders that are not compatible with adequate study follow-up
Physical and Laboratory Test Findings 28) Subjects with laboratory values that meet the following criteria are to be excluded from the study: Urine Assay: • Proteinuria > 1,000 mg/day or • Urine protein creatinine ratio > 1 Hematology: • Hemoglobin < 7 g/dL • Platelets < 80,000/mm3 • White blood cell count < 3000/mm3 (3 x 109/L) Chemistry: • Bilirubin >1.5 x upper limit of normal range (ULN); Subjects who have Gilbert’s syndrome and have a normal direct bilirubin are permitted • Aspartate aminotransferase (AST) ≥ 2 x ULN • Alanine aminotransferase (ALT) ≥ 2 x ULN 29) All women ≥ 40 years and women of any age who have first degree relatives with a history of breast carcinoma, or who have other risk factors of breast carcinoma, must have a screening mammogram, or provide results of a screening mammogram performed within 6 months of enrollment. Subjects with a mammogram that is suspicious for malignancy and in whom the possibility of malignancy cannot be reasonably excluded following additional clinical, laboratory, or other diagnostic evaluations will be excluded 30) Subjects who have difficult i.v. access
Prohibited Therapies and/or Medications 31) Subjects who have used any investigational drug within 30 days prior to the Day 1 visit 32) Subjects previously treated with belatacept
Other Exclusion Criteria 33) Prisoners or subjects who are compulsorily detained |
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E.5 End points |
E.5.1 | Primary end point(s) |
Assess the change in calculated GFR (MDRD formula) from baseline to 12 months post-randomization. |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | No |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | Yes |
E.6.13.1 | Other scope of the trial description |
Immunogenicity Analyses; QoL; Biomarkers; Tolerability |
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E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | Information not present in EudraCT |
E.7.1.2 | Bioequivalence study | Information not present in EudraCT |
E.7.1.3 | Other | Information not present in EudraCT |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | Yes |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 2 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 12 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | Information not present in EudraCT |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
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E.8.7 | Trial has a data monitoring committee | Yes |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 3 |
E.8.9.1 | In the Member State concerned months | 0 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 3 |
E.8.9.2 | In all countries concerned by the trial months | 0 |
E.8.9.2 | In all countries concerned by the trial days | 0 |