The purpose of this study is to compare how the body absorbs and processes two different formulations of the anti-rejection medication tacrolimus (Advagraf® or Prograf®) in children receiving an organ transplant, and how safe and effective they are over a longer period of time. This study is for children less than 16 years old. No minimum age has been set, however, to be included in this study participants must able to swallow the medication capsules intact.
Participants undergoing primary heart, kidney or liver transplantation and meeting the Inclusion Criteria and complying with the Exclusion Criteria prior to initiation of tacrolimus therapy will be enrolled. Participants will be randomized to treatment with either Advagraf® or Prograf®. The randomization will be on a 1:1 basis stratified by organ and centre. The study is divided in to two parts: Part A: The initial pharmacokinetic part of the study. Part B: A long term follow-up of one year. The main objective of Part A of the study is to collect PK data following administration of Advagraf® and Prograf® in de novo pediatric allograft recipients. Part B allows comparison of the safety and efficacy profiles of Advagraf® vs. Prograf® for longer term (52 weeks) post allograft transplantation. Part C: Continuation of long-term follow-up (from Day 365 onwards). Participants who have completed Part B and to whom continued treatment with Advagraf® is not currently available, will be offered participation in a continuation of long-term follow-up Part C. Part C will continue until Advagraf® becomes available to these participants or these participants' discontinuation, whichever is the earliest. This applies to participants in the following countries: Czech Republic, Italy, UK and Poland only.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
NONE
Enrollment
44
Participants receive an initial total daily dose of tacrolimus depending on the type of organ transplant (heart = 0.075 mg/kg; liver/kidney = 0.3 mg/kg), to be given orally (or via nasogastric tube for liver transplant recipients) in 2 doses in the morning and the evening. The first dose is administered in the morning within days of skin closure (heart = 4 days; liver = 2 days; kidney = within 24 hours following reperfusion). Subsequent tacrolimus doses are taken orally twice a day in the morning and evening and are adjusted on the basis of clinical evidence of efficacy, occurrence of adverse events and observing the recommended whole blood trough level ranges (day 1 through 21 = 10 to 20 ng/mL; day 22 through 365 = 5 to 15 ng/mL).
Participants receive an initial total daily dose of tacrolimus prolonged release depending on the type of organ transplant (heart = 0.075 mg/kg; liver/kidney = 0.3 mg/kg), to be given orally (or via nasogastric tube for liver transplant recipients) in 1 dose. The first dose is administered in the morning within days of skin closure (heart = 4 days; liver = 2 days; kidney = within 24 hours following reperfusion). Subsequent tacrolimus prolonged release doses are taken orally once a day in the morning and are adjusted on the basis of clinical evidence of efficacy, occurrence of adverse events and observing the recommended whole blood trough level ranges (day 1 through 21 = 10 to 20 ng/mL; day 22 through 365 = 5 to 15 ng/mL).
Site CZ61
Prague, Czechia
Site FR33
Bron, France
Site FR32
Paris, France
Site IT52
Rome, Italy
Site PL71
Warsaw, Poland
Site GB43
Birmingham, United Kingdom
Site GB46
Liverpool, United Kingdom
Site GB44
London, United Kingdom
Site GB45
London, United Kingdom
Site GB42
Manchester, United Kingdom
Area Under the Plasma Concentration-time Curve from Time 0 to Time 24 Hours (AUC0-24h) for Tacrolimus (Part A)
Time frame: Days 1, 7 and 28 at predose, 1, 2, 4, 6, 12, 13, 14, 16, 18 and 24 hours postdose
Number of Participants with Adverse Events (Part A + B)
Safety is assessed by adverse events (AEs), which includes abnormalities identified during a medical test (e.g. laboratory tests, vital signs, electrocardiogram, etc.) if the abnormality induces clinical signs or symptoms, needs active intervention, interruption or discontinuation of study medication or is clinically significant. A serious AE (SAE) is an event resulting in death, persistent or significant disability/incapacity or congenital anomaly or birth defect, is life-threatening, requires or prolongs hospitalization or is considered medically important.
Time frame: From first dose of study drug up to 7 days after last dose of study drug in Part B (up to 53 weeks)
Number of Participants with Adverse Events (Part C)
Safety is assessed by adverse events (AEs), which includes abnormalities identified during a medical test (e.g. laboratory tests, vital signs, electrocardiogram, etc.) if the abnormality induces clinical signs or symptoms, needs active intervention, interruption or discontinuation of study medication or is clinically significant. A serious AE (SAE) is an event resulting in death, persistent or significant disability/incapacity or congenital anomaly or birth defect, is life-threatening, requires or prolongs hospitalization or is considered medically important.
Time frame: Up to 9 years
Maximum Concentration (Cmax) of Tacrolimus (Part A)
Time frame: Days 1, 7 and 28 at predose, 1, 2, 4, 6, 12, 13, 14, 16, 18 and 24 hours postdose
Time to Attain Maximum Concentration (tmax) of Tacrolimus (Part A)
Time frame: Days 1, 7 and 28 at predose, 1, 2, 4, 6, 12, 13, 14, 16, 18 and 24 hours postdose
Trough Concentration (C12) for Tacrolimus (Part A)
Time frame: Days 1, 7 and 28, 12 hours after dosing
Trough Concentration (C24) for Tacrolimus (Part A)
Time frame: Days 1, 7 and 28, 24 hours after dosing
Correlation between AUC24 & C24 (Part A)
Time frame: Days 1, 7 and 28 at predose, 1, 2, 4, 6, 12, 13, 14, 16, 18 and 24 hours postdose
Number of Participants with Acute Rejections (Part A + B)
Rejection episodes/acute rejections are indicated by clinical and/or laboratory signs, and are classified according to their rejection specific treatment: •Spontaneously Resolving Acute Rejection: not treated with new or increased corticosteroid medication, antibodies or any other medication and resolved, irrespective of any tacrolimus dose changes; •Corticosteroid Sensitive Acute Rejection: treated with new or increased corticosteroid medication only and which has resolved, irrespective of any tacrolimus dose changes; •Corticosteroid Resistant Acute Rejection: did not resolve following treatment with corticosteroids; - Resolved with further treatment: any acute rejection with an end date AND a treatment other than corticosteroid used; - Unresolved with further treatment: any acute rejection with no end date AND a treatment other than corticosteroid used; - Unresolved with no further treatment: any acute rejection with no end date AND ONLY corticosteroid treatment was used.
Time frame: Up to Week 52
Number of Participants with Biopsy-proven Acute Rejection Episodes (BPARs) (Part A + B)
BPAR episodes are defined as acute rejection episodes confirmed by biopsy, and are classified according to their rejection specific treatment: •Spontaneously Resolving Acute Rejection: not treated with new or increased corticosteroid medication, antibodies or any other medication and resolved, irrespective of any tacrolimus dose changes; •Corticosteroid Sensitive Acute Rejection: treated with new or increased corticosteroid medication only and which has resolved, irrespective of any tacrolimus dose changes; •Corticosteroid Resistant Acute Rejection: did not resolve following treatment with corticosteroids; - Resolved with further treatment: any acute rejection with an end date AND a treatment other than corticosteroid used; - Unresolved with further treatment: any acute rejection with no end date AND a treatment other than corticosteroid used; - Unresolved with no further treatment: any acute rejection with no end date AND ONLY corticosteroid treatment used.
Time frame: Up to Week 52
Severity of Biopsy Proven Acute Rejection Episodes (Part A + B)
The severity of BPARs is categorized with specific criteria by organ: For kidney transplant participants, according to Banff '97 Diagnostic categories for renal allograft biopsies - Banff '07 update (C4d deposition, Acute antibody-mediated rejection I, II, and III, Acute T cell mediated rejection IA, IB, IIA, IIB and III); for liver transplant participants, according to 1997 Banff Schema for Grading of Liver Allograft Rejection - Rejection Activity Index (mild, moderate, severe or indeterminate/borderline); for heart, according to Standardized Nomenclature of the International Society of Heart and Lung Transplantation - Standardised Cardiac Biopsy Grading: Acute Cellular Rejection 2004 (mild, moderate, severe).
Time frame: Up to Week 52
Patient Survival (Part A + B)
Patient survival is defined as the time from first dose of study drug to the date of death from any cause.
Time frame: Up to Week 52
Graft Survival (Part A + B)
Graft survival is defined as the time from the first dose of study drug to graft loss. Graft loss is defined as retransplantation, nephrectomy (in case of kidney transplantation), death or dialysis (in case of kidney transplantation) ongoing at end of study or at discontinuation, unless superseded by follow-up information.
Time frame: Up to Week 52
Efficacy Failure (Part A + B)
Efficacy failure is defined as the composite of the following: death, graft loss, BPAR and unknown outcome. A participant is considered to have an unknown outcome if he/she does not have the event of interest (death, graft loss, BPAR) or does not have a study assessment prior to day 335.
Time frame: Up to Week 52
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.