E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
We will study in healthy volunteers the effect of ticagrelor on the vasodilator effect of dipyridamole |
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E.1.1.1 | Medical condition in easily understood language |
We will study in healthy volunteers the effect of ticagrelor on the vasodilator effect of dipyridamole |
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E.1.1.2 | Therapeutic area | Body processes [G] - Circulatory and Respiratory Physiological Phenomena [G09] |
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 |
To investigate whether ticagrelor increases adenosine receptor stimulation in humans in vivo by ENT inhibition. |
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E.2.2 | Secondary objectives of the trial |
- To investigate whether the administration of ticagrelor potentiates the forearm vasodilator response to the intrabrachial administration of dipyridamole.
- To study whether ticagrelor inhibits the ex vivo adenosine uptake in isolated erythrocytes.
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
In order to be eligible to participate in this study, a subject must meet all of the following criteria:
- Male sex
- Age 18-40 years
- Healthy
- Written informed consent
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E.4 | Principal exclusion criteria |
A potential subject who meets any of the following criteria will be excluded from participation in this study:
- Smoking
- Hypertension (Blood pressure >140 mmHg and/or >90 mmHg – SBP/DBP-)
- Diabetes Mellitus (fasting glucose > 7.0 mmol/L or random > 11.0 mmol/L)
- History of any cardiovascular disease
- History of chronic obstructive pulmonary disease (COPD) or asthma
- Bleeding tendency
- Concomitant use of medication
- Renal dysfunction (MDRD < 60 ml/min)
- Liver enzyme abnormalities (ALAT > twice upper limit of normality)
- Thrombocytopenia (<150*109/ml)
- Second/third degree AV-block on electrocardiography
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E.5 End points |
E.5.1 | Primary end point(s) |
Forearm blood flow response to the intrabrachial administration of adenosine and to 2 and 5 minutes of forearm ischemia (i.e. post-occlusive reactive hyperemia). |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
2 hours after ingestion of a single dose of the study drug or placebo |
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E.5.2 | Secondary end point(s) |
Forearm blood flow response to the intrabrachial administration of dipyridamole.
Transport characteristics of the ENT transporter, determined ex vivo on isolated erythrocytes.
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
2 hours after intake of the single dose of the study drug or placebo |
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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 | No |
E.6.5 | Efficacy | No |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | Yes |
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) | No |
E.7.4 | Therapeutic use (Phase IV) | Yes |
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 | No |
E.8.1.6 | Cross over | Yes |
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 | 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
| Yes |
E.8.4 | The trial involves multiple sites in the Member State concerned | No |
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 | 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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End of the trial is after the last measurement on the day of the second experiment |
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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 | 0 |
E.8.9.1 | In the Member State concerned months | 6 |
E.8.9.1 | In the Member State concerned days | 0 |