E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Brain injury in neonates with critical congenital heart disease requiring cardiac surgery with cardiopulmonary bypass. |
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E.1.1.1 | Medical condition in easily understood language |
Brain injury by insufficient oxygen and blood supply to the brain in neonates with critical congenital heart disease. |
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E.1.1.2 | Therapeutic area | Diseases [C] - Congenital, Hereditary, and Neonatal Diseases and Abnormalities [C16] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10010495 |
E.1.2 | Term | Congenital heart disease NOS |
E.1.2 | System Organ Class | 100000004850 |
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E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10067967 |
E.1.2 | Term | Brain injury |
E.1.2 | System Organ Class | 10029205 - Nervous system disorders |
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E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To evaluate whether in newborns with critical congenital heart disease, early postnatal (after birth) and perioperative (around cardiac surgery with cardiopulmonary bypass) allopurinol compared to placebo (mannitol) administration reduces relevant (moderate/severe) parenchymatous brain injury on postoperative MRI. |
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E.2.2 | Secondary objectives of the trial |
To evaluate the effect of allopurinol on: - Brain injury severity score and volume of hypoxic-ischemic injury (MRI). - Brain function (amplitude integrated electroenchepalogram) and oxygenation (near-infrared spectroscopy). - Cardiac function (echocardiography). - Neurodevelopmental outcome (general movements, Bayley scales of infant development and executive functioning). - Quality of life. - Cost-effectiveness of allopurinol. |
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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 |
Pharmacokinetics of allopurinol. Pharmacokinetic evaluation of allopurinol will take place in a subpopulation of the first 24 patients, including allopurinol, oxypurinol, hypoxanthine, xanthine and uric acid levels postnatally and perioperatively.
Inflammatory biomarkers. Blood samples will be taken postnatally and perioperatively in a subpopulation of 40 patients for analysis of inflammasome-mediated cytokines (as interleukines and TNF-alpha) and endothelial factors (as VEGF and others). Aim is to answer the question if allopurinol treatment affects inflammasome activation and neuroendothelial function early after birth and around cardiac surgery with cardiopulmonary bypass.
Cardiac MRI. Cardiac MRI will be performed prenatally, postnatally and postoperatively in a subpopulation of 50 patients. Cardiac MRI is of great importance for a better understanding of cardiac function and physiology in relation to brain development and injury in neonates with duct-dependent congenital heart disease (heart-brain-axis). |
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E.3 | Principal inclusion criteria |
Neonates with a prenatally (before birth) or postnatally (after birth) confirmed diagnosis of critical congenital heart disease requiring (anticipated) cardiac surgery with cardiopulmonary bypass (within the first 4 weeks of life).
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E.4 | Principal exclusion criteria |
- Inability to enroll the patient before the start of delivery in case of prenatal diagnosis, or 24 hours before surgery in case of postnatal diagnosis. - Gestational age below 36 weeks and/or birth weight less than 2000 gram. - Surgery not requiring cardiopulmonary bypass. - Patient considered “moribund”. - Decision for “comfort care only”. |
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E.5 End points |
E.5.1 | Primary end point(s) |
Primary outcome is a composite endpoint of relevant (moderate/severe) parenchymatous brain injury on postoperative MRI or too instable for postoperative MRI or mortality |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Primary endpoint will be measured at postoperative MRI. The postoperative MRI takes place 5 to 10 days (and at least within 1 month) after cardiac surgery with cardiopulmonary bypass, which is usually within the neonatal period (first month of life). |
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E.5.2 | Secondary end point(s) |
Secondary outcome measures are: - Brain injury severity score and volume of hypoxic-ischemic brain injury (pre- and postoperative MRI) - Brain function: background pattern and seizure activity (postnatal and perioperative amplitude integrated electroenchepalogram). - Brain oxygenation (postnatal and perioperative near-infrared spectroscopy). - Cardiac function (pre- and postoperative echocardiography). - Neurodevelopmental outcome (general movements at 3 months and Bayley scales of infant development and executive functioning testing at 24 months). - Quality of Life (TNO-TAPQOL at 24 months). - Cost-effectiveness of allopurinol (questionnaires during hospital stay, at 3 and 24 months). - Pharmacokinetics of allopurinol (substudy: postnatally, perioperatively).
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Timepoints of each endpoint evaluation are mentioned in E.5.2. All endpoints will be expected within the neonatal period (first month of life) except neurodevelopmental outcome assessment and quality of life and cost-effectiveness questionnaires which takes place (also) at 3 and 24 months of age. |
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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 | Yes |
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 | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
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 | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | Yes |
E.8.1.7.1 | Other trial design description |
Group sequential analysis with 1 interim (n=94) for prenatal diagnosis group |
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E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
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 | 7 |
E.8.5 | The trial involves multiple Member States | No |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | No |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
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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The inclusion period is 2.5 years (including primary outcome assessment with postoperative brain MRI). The total duration of the trial is 4.5 years (including neurodevelopmental follow-up at 24 months of age). |
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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 | |
E.8.9.1 | In the Member State concerned months | 54 |
E.8.9.1 | In the Member State concerned days | |