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A study to determine how much ticagrelor needs to be given to children and adolescents with a central venous catheter.

A multicenter, double-blind, placebo-controlled, pharmacokinetic, pharmacodynamic, safety and tolerability study in patients aged 12 to <18 years of age with a central venous catheter to support prediction of the age appropriate dose of ticagrelor with similar levels of inhibition of platelet aggregation to 90 mg bd in adults - NA

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2012-002896-32-HU
Enrollment
18
Registered
2012-11-15
Start date
2013-01-16
Completion date
Unknown
Last updated
2025-02-03

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

Conditions

Thrombosis, thromboembolism MedDRA version: 14.1 Level: PT Classification code 10050661 Term: Platelet aggregation inhibition System Organ Class: 10005329 - Blood and lymphatic system disorders

Interventions

Product Name: ticagrelor 45 mg, tablets Product Code: AZD6140 Pharmaceutical Form: Film-coated tablet INN or Proposed INN: Ticagrelor CAS Number: 274693-5 Current Sponsor code: AZD6140 Other descripti

Sponsors

AstraZeneca AB
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Written informed consent for study participation must be obtained prior to any study related procedures being performed and according to international guidelines and/or applicable EU guidelines Patients aged 12 to =65 years) no F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: Sign or suspicion of extra-vascular bleeding in connection with placement of the CVC (>24 hours need to have elapsed since any sign or suspicion of ongoing bleeding, in order to allow randomisation of the patient). Patients who have an ongoing bleeding, risk of bleeding, previous intracranial haemorrhage, or platelet count <100,000 x 109/L. Surgery within 7 days unless judged to be a low risk for bleeding and at least 24 hours after surgery. Patients who are taking aspirin or other non-steroidal anti-inflammatory drugs within a week before randomisation and during the study period. Patients who are taking ADP receptor blockers (eg, clopidogrel, prasugrel,ticlopidine), dipyridamole, and cilostazol within a week before randomisation and during the study period.

Design outcomes

Primary

MeasureTime frame
Main Objective: To assess the pharmacodynamics of ticagrelor (45 mg bd), measured as the final extent of inhibition of platelet aggregation in paediatric patients aged from 12 to <18 years of age.;Secondary Objective: To examine the pharmacokinetic profile of ticagrelor in paediatric patients 12 to <18 years of age. To evaluate the relationship between ticagrelor exposure and platelet aggregation inhibition. To assess the safety and tolerability of ticagrelor in patients aged 12 to <18 years of age with a central venous catheter by evaluation of adverse events, including bleeding events. To evaluate the relationship between inhibition of platelet aggregation and platelet reactivity index by determining the platelet reactivity index. ;Primary end point(s): Pharmacodynamics of ticagrelor:Final extent of inhibition of platelet aggregation(IPA). IPA will be assessed via light transmission aggregometry of platelet rich plasma with 3.2% sodium citrate as the anticoagulant and 20 umol/L of ADP as the agonist. ;Timepoint(s) of evaluation of this end point: On days 1 and 5 as well as after 2 day's follow-up

Secondary

MeasureTime frame
Secondary end point(s): #1) To examine the pharmacokinetic profile of ticagrelor by assessment of maximum concentration, time to maximum concentration, area under the plasma time concentration curve and accumulation ratio #2) To evaluate the relationship between ticagrelor exposure and platelet aggregation inhibition (IPA) #3) To assess the safety and tolerability ticagrelor by assessment of adverse events (AEs) including bleeding, laboratory values, physical examination, vital signs and ECG #4) To evaluate the relationship between inhibition of platelet aggregation (IPA) and platelet reactivity index (PRI). PRI will be determined by measurement of vasodilator-stimulated phosphoprotein phosphorylation (VASP-P);Timepoint(s) of evaluation of this end point: #1) On days 1 and 5 #2) On days 1 and 5 #3) AEs during the study, lab and vital signs at baseline, day 5 and 2 day's follow-up, phys exam at baseline and 2 days' follow-up, ECG at baseline, days 1 and 5, 2 day's follow-up #4) On days 1 and 5 as well as after 2 day's follow-up

Countries

Canada, Czech Republic, France, Germany, Hungary

Contacts

Public ContactInformation Center

AstraZeneca

information.center@astrazeneca.com

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026