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OPERA Study: A Study of Two Dosing Regimens of CellCept (Mycophenolate Mofetil) in Kidney Transplant Patients.

A Randomized Study Comparing the Incidence of Acute Clinical or Subclinical Rejection With Two Dosing Regimens of CellCept in de Novo Renal Transplant Recipients Receiving Induction, Cyclosporine and Brief Steroid Therapy

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02005562
Enrollment
252
Registered
2013-12-09
Start date
2006-05-31
Completion date
2009-03-31
Last updated
2015-11-11

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Kidney Transplantation

Brief summary

This study will compare the incidence of acute clinical or subclinical rejection between immunosuppression with CellCept at a starting dose of 3mg po daily with therapeutic drug monitoring and standard immunosuppression with CellCept and a fixed dose of 2g po daily, in kidney transplant recipients receiving induction by anti-IRL2, cyclosporine therapy, and early discontinuation of steroids. Patients will be randomized to one of the two treatment arms. The anticipated time on study treatment is 52 weeks.

Interventions

DRUGmycophenolate mofetil

3 g p.o. in divided doses q12h beginning on the day of renal transplant, Day 0, or the day before, Day -1, and continuing to Week 52, adapted to MPA by AUC on Weeks 2, 6, 12, 26, and 52 to obtain AUC0-12 of 50 milligrams (mg) multiplied by (\*) height (h)/ liter(L).

DRUGanti-IL-2R

Induction by IL-2R was administered at Day 0 per standard of care at the site at the investigators discretion.

DRUGmethylprednisolone

500 mg intravenous (i.v.) was administered before or after the transplantation, and 0.5 mg/kg p.o. daily from Day 1 to Day 7.

DRUGcyclosporine

100-1500 nanograms (ng) per milliliter (mL) from Day 0 to Week 4, 800-1200 ng/mL from Week 4 to Week 12 and 500-800 ng/mL from Week 12 to Week 52

Sponsors

Hoffmann-La Roche
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

* adult patients, aged 18-75 years of age; * in receipt of first donor kidney; * eligible to receive immunosuppressive treatment comprising IRL2, CellCept, cyclosporine and steroids; * eligible to receive oral treatment from the first day post-transplantation.

Exclusion criteria

* patients receiving a second or subsequent kidney transplant, or multi-organ transplant; * history of malignancy in the last 5 years (except successfully treated squamous cell or basal cell cancer and cervical cancer in situ); * patients with active hepatitis B and/or hepatitis C, or HIV infection.

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants With Biopsy-Proven Acute Rejection (BPAR) Before Week 12 or Acute Subclinical Rejection on Protocol Biopsy at Week 12Week 12BPAR was defined as the presence of clinical signs and kidney biopsy that confirmed the rejection before Week 12. Subclinical acute rejection was defined as an increase of serum creatinine at Week 12 strictly less than 10 percent (%) compared to baseline (BL) values and BPAR of Grade greater than or equal to (≥) 1 according to Banff 1997 classification at Week 12.

Secondary

MeasureTime frameDescription
Creatinine Clearance Values Estimated With the Cockcroft-Gault Equation (Milliliters Per Minute [mL/Min])Weeks 2, 4, 6, 12, 16, 26, 39, and 52The mean creatinine clearance values at Weeks 2, 4, 6, 12, 16, 26, 39, and 52 estimated using the Cockcroft-Gault equation.
Creatinine Clearance Values Estimated With the Modification of Diet in Renal Disease (MDRD) Simplified EquationWeeks 2, 4, 6, 12, 16, 26, 39, and 52The mean creatinine clearance values at Weeks 2, 4, 6, 12, 16, 26, 39, and 52 estimated using the MDRD simplified equation. For males, the MDRD simplified equation was defined as MDRD (mL/min/1.73 square meters \[m\^2\]) =186 multiplied by (\*) serum creatinine in mg/L raised to the power of (\^) -1.154 \* age \^ -0.203. For females, the MDRD simplified equation was defined as MDRD (mL/min/1.73 m\^2) = males formula \* 0.742.
Time to Occurrence of First BPAR Between Day 0 and Week 52 - Percentage of Participants With an EventDay 0, Weeks 2, 4, 6, 12, 16, 26, 39, and 52BPAR was defined as the presence of clinical signs and kidney biopsy that confirmed the rejection before Week 12. Subclinical acute rejection at Week 12 was included in the analysis. Subclinical acute rejection was defined as an increase of serum creatinine at Week 12 strictly less than 10% compared to BL values and BPAR of Grade ≥1 according to Banff 1997 classification at Week 12. The occurrence of the first BPAR was defined as the time from randomization to the first recorded BPAR between Day 0 and Week 52. The results of protocol biopsies at Week 12 were taken into account. Participants were censored at the date of last treatment, date of last contact or withdrawal, and date of death.
Time to Occurrence of First BPAR Between Day 0 and Week 52Day 0, Weeks 2, 4, 6, 12, 16, 26, 39, and 52BPAR was defined as the presence of clinical signs and kidney biopsy that confirmed the rejection before Week 12. Subclinical acute rejection at Week 12 was included in the analysis. Subclinical acute rejection was defined as an increase of serum creatinine at Week 12 strictly less than 10% compared to BL values and BPAR of Grade ≥1 according to Banff 1997 classification at Week 12. The occurrence of the first BPAR was defined as the time from randomization to the first recorded BPAR between Day 0 and Week 52. The results of protocol biopsies at Week 12 were taken into account. Participants were censored at the date of last treatment, date of last contact or withdrawal, and date of death.
Percentage of Participants With at Least One BPAR at Week 12 and Week 52Weeks 12 and 52BPAR was defined as the presence of clinical signs and kidney biopsy that confirmed the rejection before Week 12. Participants were censored at the date of last treatment, date of last contact or withdrawal, and date of death.
Serum Creatinine Values [Micromoles Per Liter (µmol/L)]Weeks 2, 4, 6, 12, 16, 26, 39, and 52The mean serum creatinine values at Weeks 2, 4, 6, 12, 16, 26, 39, and 52.
Graft Histology - Percentage of Participants With at Least One Chronic Graft Nephropathy at Week 12 and Week 52Weeks 12 and 52Participants were censored at the date of last treatment, date of last contact or withdrawal, and date of death.
Graft Loss - Percentage of Participants With an EventDay 0, Weeks 2, 4, 6, 12, 16, 26, 39, and 52Graft loss was defined as physical loss (nephrectomy), functional loss \[necessitating maintenance dialysis for greater than (\>)8 weeks\], retransplant or death. Participants were censored at the date of last treatment, date of last contact or withdrawal, and date of death.
Time to Graft LossDay 0, Weeks 2, 4, 6, 12, 16, 26, 39, and 52The median time, in days, from randomization to graft loss event. Participants were censored at the date of last treatment, date of last contact or withdrawal, and date of death.
Participant SurvivalDay 0, Weeks 2, 4, 6, 12, 16, 26, 39, and 52Participants survival was defined as the percentage of participants living with or without a functioning graft between Weeks 0 and 52. Participants were censored at the date of last treatment, date of last contact or withdrawal, and date of death.
Graft Histology - Percentage of Participants With at Least One Borderline Lesion at Week 12 and Week 52Weeks 12 and 52Participants were censored at the date of last treatment, date of last contact or withdrawal, and date of death.

Countries

France

Participant flow

Participants by arm

ArmCount
Mycophenolate Mofetil, Adapted Dose
Participants received MMF, 3 g, tablets or capsules, PO, q12h adapted to MPA by AUC on Day -1 or Day 0 through Week 52. Participants also received cyclosporine adapted to a C2 level = 1000 to 1500 ng/mL from Day 0 to Week 4, C2 = 800 to 1200 ng/mL from Weeks 4 to 12, and C2 = 500 to 800 ng/mL from Weeks 12 to 52. Participants also received methylprednisolone 500 mg, IV, on Day -1 or Day 0, and 0.5 mg/kg, PO, daily (maximum daily dose of 60 mg) from Days 1 through 7 (with steroid withdrawal on Day 7). Participants also received anti-IL-2R, per the investigator's discretion.
126
Mycophenolate Mofetil, Fixed Dose
Participants received MMF 2 g, tablets or capsules, PO, q12h on Day -1 or Day 0 through Week 52. Participants also received cyclosporine adapted to C2 = 1000 to 1500 ng/mL from Day 0 to Week 4, C2 = 800 to 1200 ng/mL from Weeks 4 to 12, and C2 = 500 to 800 ng/mL from Weeks 12 to 52 and methylprednisolone 500 mg, IV, on Day -1 or Day 0, and 0.5 mg/kg, PO, daily (maximum daily dose of 60 mg) from Days 1 through 7 (with steroid withdrawal on Day 7). Participants also received anti-IL-2R, per the investigator's discretion.
121
Total247

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyDeath22
Overall StudyGraft loss76
Overall StudyNo transplant14
Overall StudyPhysician Decision01
Overall StudyWithdrawal by Subject22

Baseline characteristics

CharacteristicMycophenolate Mofetil, Adapted DoseMycophenolate Mofetil, Fixed DoseTotal
Age, Continuous48.4 years
STANDARD_DEVIATION 13.2
48.5 years
STANDARD_DEVIATION 13
48.5 years
STANDARD_DEVIATION 13.1
Sex: Female, Male
Female
40 Participants43 Participants83 Participants
Sex: Female, Male
Male
86 Participants78 Participants164 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
120 / 127115 / 125
serious
Total, serious adverse events
106 / 12794 / 125

Outcome results

Primary

Percentage of Participants With Biopsy-Proven Acute Rejection (BPAR) Before Week 12 or Acute Subclinical Rejection on Protocol Biopsy at Week 12

BPAR was defined as the presence of clinical signs and kidney biopsy that confirmed the rejection before Week 12. Subclinical acute rejection was defined as an increase of serum creatinine at Week 12 strictly less than 10 percent (%) compared to baseline (BL) values and BPAR of Grade greater than or equal to (≥) 1 according to Banff 1997 classification at Week 12.

Time frame: Week 12

Population: ITT population; only participants with available protocol biopsy at Week 12 and/or a BPAR before Week 12 were included in the analysis.

ArmMeasureValue (NUMBER)
Mycophenolate Mofetil, Adapted DosePercentage of Participants With Biopsy-Proven Acute Rejection (BPAR) Before Week 12 or Acute Subclinical Rejection on Protocol Biopsy at Week 1224.2 percentage of participants
Mycophenolate Mofetil, Fixed DosePercentage of Participants With Biopsy-Proven Acute Rejection (BPAR) Before Week 12 or Acute Subclinical Rejection on Protocol Biopsy at Week 1219.8 percentage of participants
p-value: 0.479Chi-squared
Secondary

Creatinine Clearance Values Estimated With the Cockcroft-Gault Equation (Milliliters Per Minute [mL/Min])

The mean creatinine clearance values at Weeks 2, 4, 6, 12, 16, 26, 39, and 52 estimated using the Cockcroft-Gault equation.

Time frame: Weeks 2, 4, 6, 12, 16, 26, 39, and 52

Population: ITT population; n=number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (MEAN)Dispersion
Mycophenolate Mofetil, Adapted DoseCreatinine Clearance Values Estimated With the Cockcroft-Gault Equation (Milliliters Per Minute [mL/Min])Week 2 (n=120,114)46.68 mL/minStandard Deviation 21.05
Mycophenolate Mofetil, Adapted DoseCreatinine Clearance Values Estimated With the Cockcroft-Gault Equation (Milliliters Per Minute [mL/Min])Week 4 (n=119,113)51.03 mL/minStandard Deviation 19.17
Mycophenolate Mofetil, Adapted DoseCreatinine Clearance Values Estimated With the Cockcroft-Gault Equation (Milliliters Per Minute [mL/Min])Week 6 (n=119,113)53.66 mL/minStandard Deviation 20.94
Mycophenolate Mofetil, Adapted DoseCreatinine Clearance Values Estimated With the Cockcroft-Gault Equation (Milliliters Per Minute [mL/Min])Week 12 (n=117,112)56.55 mL/minStandard Deviation 19.4
Mycophenolate Mofetil, Adapted DoseCreatinine Clearance Values Estimated With the Cockcroft-Gault Equation (Milliliters Per Minute [mL/Min])Week 16 (n=116,112)56.55 mL/minStandard Deviation 20.14
Mycophenolate Mofetil, Adapted DoseCreatinine Clearance Values Estimated With the Cockcroft-Gault Equation (Milliliters Per Minute [mL/Min])Week 26 (n=115,112)60.21 mL/minStandard Deviation 21.35
Mycophenolate Mofetil, Adapted DoseCreatinine Clearance Values Estimated With the Cockcroft-Gault Equation (Milliliters Per Minute [mL/Min])Week 40 (n=114,108)59.17 mL/minStandard Deviation 19.86
Mycophenolate Mofetil, Adapted DoseCreatinine Clearance Values Estimated With the Cockcroft-Gault Equation (Milliliters Per Minute [mL/Min])Week 52 (n=115,110)58.29 mL/minStandard Deviation 20.42
Mycophenolate Mofetil, Fixed DoseCreatinine Clearance Values Estimated With the Cockcroft-Gault Equation (Milliliters Per Minute [mL/Min])Week 52 (n=115,110)56.45 mL/minStandard Deviation 22.02
Mycophenolate Mofetil, Fixed DoseCreatinine Clearance Values Estimated With the Cockcroft-Gault Equation (Milliliters Per Minute [mL/Min])Week 2 (n=120,114)45.26 mL/minStandard Deviation 18.93
Mycophenolate Mofetil, Fixed DoseCreatinine Clearance Values Estimated With the Cockcroft-Gault Equation (Milliliters Per Minute [mL/Min])Week 16 (n=116,112)53.49 mL/minStandard Deviation 19.72
Mycophenolate Mofetil, Fixed DoseCreatinine Clearance Values Estimated With the Cockcroft-Gault Equation (Milliliters Per Minute [mL/Min])Week 4 (n=119,113)46.73 mL/minStandard Deviation 18.11
Mycophenolate Mofetil, Fixed DoseCreatinine Clearance Values Estimated With the Cockcroft-Gault Equation (Milliliters Per Minute [mL/Min])Week 40 (n=114,108)56.81 mL/minStandard Deviation 21.81
Mycophenolate Mofetil, Fixed DoseCreatinine Clearance Values Estimated With the Cockcroft-Gault Equation (Milliliters Per Minute [mL/Min])Week 6 (n=119,113)49.77 mL/minStandard Deviation 19.05
Mycophenolate Mofetil, Fixed DoseCreatinine Clearance Values Estimated With the Cockcroft-Gault Equation (Milliliters Per Minute [mL/Min])Week 26 (n=115,112)55.18 mL/minStandard Deviation 20.52
Mycophenolate Mofetil, Fixed DoseCreatinine Clearance Values Estimated With the Cockcroft-Gault Equation (Milliliters Per Minute [mL/Min])Week 12 (n=117,112)53.01 mL/minStandard Deviation 20.14
p-value: 0.2172ANOVA
Secondary

Creatinine Clearance Values Estimated With the Modification of Diet in Renal Disease (MDRD) Simplified Equation

The mean creatinine clearance values at Weeks 2, 4, 6, 12, 16, 26, 39, and 52 estimated using the MDRD simplified equation. For males, the MDRD simplified equation was defined as MDRD (mL/min/1.73 square meters \[m\^2\]) =186 multiplied by (\*) serum creatinine in mg/L raised to the power of (\^) -1.154 \* age \^ -0.203. For females, the MDRD simplified equation was defined as MDRD (mL/min/1.73 m\^2) = males formula \* 0.742.

Time frame: Weeks 2, 4, 6, 12, 16, 26, 39, and 52

Population: ITT population; n=number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (MEAN)Dispersion
Mycophenolate Mofetil, Adapted DoseCreatinine Clearance Values Estimated With the Modification of Diet in Renal Disease (MDRD) Simplified EquationWeek 2 (n=120,114)40.61 mL/min/1.73 m^2Standard Deviation 19
Mycophenolate Mofetil, Adapted DoseCreatinine Clearance Values Estimated With the Modification of Diet in Renal Disease (MDRD) Simplified EquationWeek 4 (n=119,113)45.02 mL/min/1.73 m^2Standard Deviation 16.58
Mycophenolate Mofetil, Adapted DoseCreatinine Clearance Values Estimated With the Modification of Diet in Renal Disease (MDRD) Simplified EquationWeek 6 (n=119,113)48.12 mL/min/1.73 m^2Standard Deviation 19.32
Mycophenolate Mofetil, Adapted DoseCreatinine Clearance Values Estimated With the Modification of Diet in Renal Disease (MDRD) Simplified EquationWeek 12 (n=117,112)50.93 mL/min/1.73 m^2Standard Deviation 16.27
Mycophenolate Mofetil, Adapted DoseCreatinine Clearance Values Estimated With the Modification of Diet in Renal Disease (MDRD) Simplified EquationWeek 16 (n=116,112)50.93 mL/min/1.73 m^2Standard Deviation 17.05
Mycophenolate Mofetil, Adapted DoseCreatinine Clearance Values Estimated With the Modification of Diet in Renal Disease (MDRD) Simplified EquationWeek 26 (n=115,112)54.22 mL/min/1.73 m^2Standard Deviation 16.76
Mycophenolate Mofetil, Adapted DoseCreatinine Clearance Values Estimated With the Modification of Diet in Renal Disease (MDRD) Simplified EquationWeek 40 (n=114,108)52.23 mL/min/1.73 m^2Standard Deviation 15.94
Mycophenolate Mofetil, Adapted DoseCreatinine Clearance Values Estimated With the Modification of Diet in Renal Disease (MDRD) Simplified EquationWeek 52 (n=115,110)50.82 mL/min/1.73 m^2Standard Deviation 16.33
Mycophenolate Mofetil, Fixed DoseCreatinine Clearance Values Estimated With the Modification of Diet in Renal Disease (MDRD) Simplified EquationWeek 52 (n=115,110)48.88 mL/min/1.73 m^2Standard Deviation 18.24
Mycophenolate Mofetil, Fixed DoseCreatinine Clearance Values Estimated With the Modification of Diet in Renal Disease (MDRD) Simplified EquationWeek 2 (n=120,114)39.60 mL/min/1.73 m^2Standard Deviation 18.74
Mycophenolate Mofetil, Fixed DoseCreatinine Clearance Values Estimated With the Modification of Diet in Renal Disease (MDRD) Simplified EquationWeek 16 (n=116,112)48.52 mL/min/1.73 m^2Standard Deviation 17.42
Mycophenolate Mofetil, Fixed DoseCreatinine Clearance Values Estimated With the Modification of Diet in Renal Disease (MDRD) Simplified EquationWeek 4 (n=119,113)41.31 mL/min/1.73 m^2Standard Deviation 16.7
Mycophenolate Mofetil, Fixed DoseCreatinine Clearance Values Estimated With the Modification of Diet in Renal Disease (MDRD) Simplified EquationWeek 40 (n=114,108)50.01 mL/min/1.73 m^2Standard Deviation 18.69
Mycophenolate Mofetil, Fixed DoseCreatinine Clearance Values Estimated With the Modification of Diet in Renal Disease (MDRD) Simplified EquationWeek 6 (n=119,113)44.69 mL/min/1.73 m^2Standard Deviation 16.69
Mycophenolate Mofetil, Fixed DoseCreatinine Clearance Values Estimated With the Modification of Diet in Renal Disease (MDRD) Simplified EquationWeek 26 (n=115,112)49.46 mL/min/1.73 m^2Standard Deviation 18.64
Mycophenolate Mofetil, Fixed DoseCreatinine Clearance Values Estimated With the Modification of Diet in Renal Disease (MDRD) Simplified EquationWeek 12 (n=117,112)47.68 mL/min/1.73 m^2Standard Deviation 16.24
p-value: 0.477ANOVA
Secondary

Graft Histology - Percentage of Participants With at Least One Borderline Lesion at Week 12 and Week 52

Participants were censored at the date of last treatment, date of last contact or withdrawal, and date of death.

Time frame: Weeks 12 and 52

Population: ITT population

ArmMeasureGroupValue (NUMBER)
Mycophenolate Mofetil, Adapted DoseGraft Histology - Percentage of Participants With at Least One Borderline Lesion at Week 12 and Week 52Week 127.9 percentage of participants
Mycophenolate Mofetil, Adapted DoseGraft Histology - Percentage of Participants With at Least One Borderline Lesion at Week 12 and Week 52Week 526.4 percentage of participants
Mycophenolate Mofetil, Fixed DoseGraft Histology - Percentage of Participants With at Least One Borderline Lesion at Week 12 and Week 52Week 1212.4 percentage of participants
Mycophenolate Mofetil, Fixed DoseGraft Histology - Percentage of Participants With at Least One Borderline Lesion at Week 12 and Week 52Week 525.0 percentage of participants
Comparison: Week 12p-value: 0.245Fisher Exact
Comparison: Week 52p-value: 0.637Fisher Exact
Secondary

Graft Histology - Percentage of Participants With at Least One Chronic Graft Nephropathy at Week 12 and Week 52

Participants were censored at the date of last treatment, date of last contact or withdrawal, and date of death.

Time frame: Weeks 12 and 52

Population: ITT population

ArmMeasureGroupValue (NUMBER)
Mycophenolate Mofetil, Adapted DoseGraft Histology - Percentage of Participants With at Least One Chronic Graft Nephropathy at Week 12 and Week 52Week 1220.6 percentage of participants
Mycophenolate Mofetil, Adapted DoseGraft Histology - Percentage of Participants With at Least One Chronic Graft Nephropathy at Week 12 and Week 52Week 5232.5 percentage of participants
Mycophenolate Mofetil, Fixed DoseGraft Histology - Percentage of Participants With at Least One Chronic Graft Nephropathy at Week 12 and Week 52Week 1217.4 percentage of participants
Mycophenolate Mofetil, Fixed DoseGraft Histology - Percentage of Participants With at Least One Chronic Graft Nephropathy at Week 12 and Week 52Week 5234.7 percentage of participants
p-value: 0.512Fisher Exact
p-value: 0.718Fisher Exact
Secondary

Graft Loss - Percentage of Participants With an Event

Graft loss was defined as physical loss (nephrectomy), functional loss \[necessitating maintenance dialysis for greater than (\>)8 weeks\], retransplant or death. Participants were censored at the date of last treatment, date of last contact or withdrawal, and date of death.

Time frame: Day 0, Weeks 2, 4, 6, 12, 16, 26, 39, and 52

Population: ITT population

ArmMeasureValue (NUMBER)
Mycophenolate Mofetil, Adapted DoseGraft Loss - Percentage of Participants With an Event5.6 percentage of participants
Mycophenolate Mofetil, Fixed DoseGraft Loss - Percentage of Participants With an Event5.0 percentage of participants
Secondary

Participant Survival

Participants survival was defined as the percentage of participants living with or without a functioning graft between Weeks 0 and 52. Participants were censored at the date of last treatment, date of last contact or withdrawal, and date of death.

Time frame: Day 0, Weeks 2, 4, 6, 12, 16, 26, 39, and 52

Population: ITT population

ArmMeasureValue (NUMBER)
Mycophenolate Mofetil, Adapted DoseParticipant Survival98.4 percentage of participants
Mycophenolate Mofetil, Fixed DoseParticipant Survival98.3 percentage of participants
Secondary

Percentage of Participants With at Least One BPAR at Week 12 and Week 52

BPAR was defined as the presence of clinical signs and kidney biopsy that confirmed the rejection before Week 12. Participants were censored at the date of last treatment, date of last contact or withdrawal, and date of death.

Time frame: Weeks 12 and 52

Population: ITT population; only participants with at least one assessed biopsy were included in the analysis.

ArmMeasureGroupValue (NUMBER)
Mycophenolate Mofetil, Adapted DosePercentage of Participants With at Least One BPAR at Week 12 and Week 52Week 1214.1 percentage of participants
Mycophenolate Mofetil, Adapted DosePercentage of Participants With at Least One BPAR at Week 12 and Week 52Week 529.1 percentage of participants
Mycophenolate Mofetil, Fixed DosePercentage of Participants With at Least One BPAR at Week 12 and Week 52Week 1210.0 percentage of participants
Mycophenolate Mofetil, Fixed DosePercentage of Participants With at Least One BPAR at Week 12 and Week 52Week 5210.0 percentage of participants
Comparison: Week 12p-value: 0.418Fisher Exact
Comparison: Week 52p-value: 0.841Fisher Exact
Secondary

Serum Creatinine Values [Micromoles Per Liter (µmol/L)]

The mean serum creatinine values at Weeks 2, 4, 6, 12, 16, 26, 39, and 52.

Time frame: Weeks 2, 4, 6, 12, 16, 26, 39, and 52

Population: ITT population; number (n) = number of participants assessed for the specified parameter at a given visit.

ArmMeasureGroupValue (MEAN)Dispersion
Mycophenolate Mofetil, Adapted DoseSerum Creatinine Values [Micromoles Per Liter (µmol/L)]Week 2 (n=120,114)202.41 µmol/LStandard Deviation 144.8
Mycophenolate Mofetil, Adapted DoseSerum Creatinine Values [Micromoles Per Liter (µmol/L)]Week 16 (n=116,112)145.48 µmol/LStandard Deviation 83
Mycophenolate Mofetil, Adapted DoseSerum Creatinine Values [Micromoles Per Liter (µmol/L)]Week 6 (n=119,113)155.74 µmol/LStandard Deviation 84.01
Mycophenolate Mofetil, Adapted DoseSerum Creatinine Values [Micromoles Per Liter (µmol/L)]Week 4 (n=119,113)168.92 µmol/LStandard Deviation 95.66
Mycophenolate Mofetil, Adapted DoseSerum Creatinine Values [Micromoles Per Liter (µmol/L)]Week 40 (n=114,108)136.24 µmol/LStandard Deviation 45.84
Mycophenolate Mofetil, Adapted DoseSerum Creatinine Values [Micromoles Per Liter (µmol/L)]Week 12 (n=117,112)140.80 µmol/LStandard Deviation 53.18
Mycophenolate Mofetil, Adapted DoseSerum Creatinine Values [Micromoles Per Liter (µmol/L)]Week 52 (n=115,110)148.62 µmol/LStandard Deviation 124.3
Mycophenolate Mofetil, Adapted DoseSerum Creatinine Values [Micromoles Per Liter (µmol/L)]Week 26 (n=115,112)131.73 µmol/LStandard Deviation 42.2
Mycophenolate Mofetil, Fixed DoseSerum Creatinine Values [Micromoles Per Liter (µmol/L)]Week 52 (n=115,110)144.72 µmol/LStandard Deviation 47.37
Mycophenolate Mofetil, Fixed DoseSerum Creatinine Values [Micromoles Per Liter (µmol/L)]Week 2 (n=120,114)201.31 µmol/LStandard Deviation 130.79
Mycophenolate Mofetil, Fixed DoseSerum Creatinine Values [Micromoles Per Liter (µmol/L)]Week 4 (n=119,113)174.86 µmol/LStandard Deviation 77.67
Mycophenolate Mofetil, Fixed DoseSerum Creatinine Values [Micromoles Per Liter (µmol/L)]Week 6 (n=119,113)158.96 µmol/LStandard Deviation 59.36
Mycophenolate Mofetil, Fixed DoseSerum Creatinine Values [Micromoles Per Liter (µmol/L)]Week 12 (n=117,112)147.70 µmol/LStandard Deviation 50.38
Mycophenolate Mofetil, Fixed DoseSerum Creatinine Values [Micromoles Per Liter (µmol/L)]Week 16 (n=116,112)148.48 µmol/LStandard Deviation 71.83
Mycophenolate Mofetil, Fixed DoseSerum Creatinine Values [Micromoles Per Liter (µmol/L)]Week 26 (n=115,112)143.73 µmol/LStandard Deviation 46.87
Mycophenolate Mofetil, Fixed DoseSerum Creatinine Values [Micromoles Per Liter (µmol/L)]Week 40 (n=114,108)141.89 µmol/LStandard Deviation 47.19
p-value: 0.6736ANOVA
Secondary

Time to Graft Loss

The median time, in days, from randomization to graft loss event. Participants were censored at the date of last treatment, date of last contact or withdrawal, and date of death.

Time frame: Day 0, Weeks 2, 4, 6, 12, 16, 26, 39, and 52

Population: ITT population

ArmMeasureValue (MEDIAN)
Mycophenolate Mofetil, Adapted DoseTime to Graft LossNA days
Mycophenolate Mofetil, Fixed DoseTime to Graft LossNA days
p-value: 0.86Log Rank
Secondary

Time to Occurrence of First BPAR Between Day 0 and Week 52

BPAR was defined as the presence of clinical signs and kidney biopsy that confirmed the rejection before Week 12. Subclinical acute rejection at Week 12 was included in the analysis. Subclinical acute rejection was defined as an increase of serum creatinine at Week 12 strictly less than 10% compared to BL values and BPAR of Grade ≥1 according to Banff 1997 classification at Week 12. The occurrence of the first BPAR was defined as the time from randomization to the first recorded BPAR between Day 0 and Week 52. The results of protocol biopsies at Week 12 were taken into account. Participants were censored at the date of last treatment, date of last contact or withdrawal, and date of death.

Time frame: Day 0, Weeks 2, 4, 6, 12, 16, 26, 39, and 52

Population: ITT population

ArmMeasureValue (MEDIAN)
Mycophenolate Mofetil, Adapted DoseTime to Occurrence of First BPAR Between Day 0 and Week 52NA days
Mycophenolate Mofetil, Fixed DoseTime to Occurrence of First BPAR Between Day 0 and Week 52NA days
p-value: 0.0764Log Rank
Secondary

Time to Occurrence of First BPAR Between Day 0 and Week 52 - Percentage of Participants With an Event

BPAR was defined as the presence of clinical signs and kidney biopsy that confirmed the rejection before Week 12. Subclinical acute rejection at Week 12 was included in the analysis. Subclinical acute rejection was defined as an increase of serum creatinine at Week 12 strictly less than 10% compared to BL values and BPAR of Grade ≥1 according to Banff 1997 classification at Week 12. The occurrence of the first BPAR was defined as the time from randomization to the first recorded BPAR between Day 0 and Week 52. The results of protocol biopsies at Week 12 were taken into account. Participants were censored at the date of last treatment, date of last contact or withdrawal, and date of death.

Time frame: Day 0, Weeks 2, 4, 6, 12, 16, 26, 39, and 52

Population: ITT population

ArmMeasureValue (NUMBER)
Mycophenolate Mofetil, Adapted DoseTime to Occurrence of First BPAR Between Day 0 and Week 52 - Percentage of Participants With an Event24.6 percentage of participants
Mycophenolate Mofetil, Fixed DoseTime to Occurrence of First BPAR Between Day 0 and Week 52 - Percentage of Participants With an Event14.9 percentage of participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026