E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
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E.1.1.1 | Medical condition in easily understood language |
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E.1.1.2 | Therapeutic area | Diseases [C] - Blood and lymphatic diseases [C15] |
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 | 10040644 |
E.1.2 | Term | Sickle cell disease |
E.1.2 | System Organ Class | 100000004850 |
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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 determine the PK properties of ticagrelor after a single oral dose |
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E.2.2 | Secondary objectives of the trial |
- To determine the PK properties of the active metabolite (AR-C124910XX) after a single oral dose
- To assess the acceptability and the palatability of a single oral dose of ticagrelor
- To assess safety and tolerability of a single oral dose of ticagrelor |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1.Paediatric patients aged <24 months, diagnosed with homozygous sickle cell (HbSS) or sickle beta-zero-thalassemia (HbS/β0), as confirmed by high performance liquid chromatography or haemoglobin electrophoresis.
2.Body weight ≥5 kg at the time of screening.
3.If treated with an anti-sickling agent such as hydroxyurea, the weight-adjusted dose must be stable for 3 months before screening/enrolment.
4.Provision of signed and dated written informed consent from parents/legal guardians prior to any study specific procedures not part of standard medical care. |
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E.4 | Principal exclusion criteria |
1. History of transient ischaemic attack or cerebrovascular event/accident (ischaemic or haemorrhagic), severe head trauma, intracranial haemorrhage, intracranial neoplasm, arteriovenous malformation, aneurysm, or proliferative retinopathy.
2. Significantly underdeveloped with regards to height, weight or head circumference for age, as judged by the Investigator.
3. Severe developmental delay (eg, cerebral palsy or mental retardation).
4. Receiving chronic treatment (>3 days/week) with non-steroidal anti-inflammatory drugs (NSAIDs).
5. Receiving chronic treatment with anticoagulants or antiplatelet drugs that cannot be discontinued.
6. Moderate or severe hepatic impairment, defined as laboratory values of alanine aminotransferase (ALT) >2 × upper limit of normal (ULN), total bilirubin >2 × ULN (unless judged by the Investigator to be caused by haemolysis), albumin <35 g/L and international normalised ratio (INR) >1.4, or symptoms of liver disease (eg, ascites).
7. Renal failure requiring dialysis.
8. Active pathological bleeding or increased risk of bleeding complications according to the Investigator.
9. Haemoglobin <6 g/dL from test performed at Screening (Visit 1).
10. Platelets <100 × 10E9/L from test performed at Screening (Visit 1).
11. Patient considered to be at risk of bradycardic events (eg, known sick sinus syndrome or second or third degree atrioventricular block).
12. Concomitant oral or intravenous therapy with moderate or strong CYP3A4 inhibitors, CYP3A4 substrates with narrow therapeutic indices, or strong CYP3A4 inducers, that have not been stopped at least 5 half-lives before dose administration.
13. Patient breastfed by mother who is under treatment of strong CYP3A4 inhibitors, as defined in Appendix E of the protocol.
14. Active untreated malaria. Patients with suspected malaria at Screening (Visit 1) will be tested.
15. Surgical procedure planned to occur during the study including 5 days after ticagrelor administration.
16. Known hypersensitivity or contraindication to ticagrelor.
17. Concern for the inability of the patient or parents to comply with study procedures and/or follow-up.
18. Any condition which, in the opinion of the Investigator, would make it unsafe or unsuitable for the patient to participate in this study.
19. Previously administered ticagrelor in the present study.
20. Participation in another clinical study with an investigational medicinal product (IMP) or device during the last 30 days preceding screening/enrolment.
21. Involvement of member of patient’s family in planning and/or conduct of the study (applies to both AstraZeneca personnel and personnel at study centre). |
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E.5 End points |
E.5.1 | Primary end point(s) |
Observed ticagrelor plasma concentrations as well as PK parameters obtained using a population PK analysis approach, eg, CL/F (oral clearance), Cmax, and AUC |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
1, 2, 4 and 6 hours postdose |
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E.5.2 | Secondary end point(s) |
a- Observed plasma concentrations of the active metabolite (AR-C124910XX) as well as PK parameters obtained using a population PK analysis approach, eg, Cmax, and AUC
b- Observer assessment of acceptability and palatability |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
a - 1, 2, 4 and 6 hours postdose
b - during administration of dose |
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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 | No |
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) | Yes |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | Yes |
E.7.1.3.1 | Other trial type description |
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E.7.2 | Therapeutic exploratory (Phase II) | No |
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 | No |
E.8.1.1 | Randomised | No |
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 | No |
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) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 1 |
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 | 1 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 9 |
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 | No |
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 |
Belgium |
Egypt |
Ghana |
Italy |
Kenya |
Lebanon |
Spain |
United Kingdom |
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E.8.7 | Trial has a data monitoring committee | No |
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 | 2 |
E.8.9.1 | In the Member State concerned months | 1 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 2 |
E.8.9.2 | In all countries concerned by the trial months | 9 |
E.8.9.2 | In all countries concerned by the trial days | 0 |