ClinicalTrials.gg
CompletedNCT03381742Updated Sep 30, 2019Results posted

Efficacy and Safety of Low-dose Ticagrelor

A Phase 2/3 interventional study of Ticagrelor and ticagrelor in Coronary Artery Disease, sponsored by First Affiliated Hospital of Harbin Medical University. Completed at 1 site in China. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2019-09-30.

Sponsored by First Affiliated Hospital of Harbin Medical University · Phase 2/3, Interventional, and Treatment

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Phase
Phase 2/3
Study type
Interventional
Enrollment
3,043
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 78 studies testing ticagrelor in Coronary Artery Disease — 5 open to participants now, 5 under way, 2 of them phase 3. Ticagrelor · Coronary Artery Disease.

Enrollment
4th of 78
3,043 · median 80
Started
2017
with 8 others
Phase 2/3
5 of 78
none open now
Registered
56th of 78
by date
Lead sponsor
6 of 78
First Affiliated Hospital of Harbin Medical University

Among the 78 studies testing ticagrelor in Coronary Artery Disease, this one is the 4th largest by enrollment, is one of 9 that started in 2017, is one of 5 in phase 2/3, and was the 56th registered.

Coronary Artery Disease

4,861 studies on the registry are indexed under Coronary Artery Disease; 892 are open to participants now.

Browse Coronary Artery Disease studies →

Open to participants now

5 of the 78 studies testing ticagrelor in Coronary Artery Disease are open now, in 5 countries. Recruiting first, the newest first:

By country, each count listing its studies:

All 5 open studies →

About ticagrelor

Ticagrelor: first FDA approval 2011 (BRILINTA), first EMA approval 2010. What it is approved for, and how studies give it, is on its page →

Who these studies take

Of the 588 Coronary Artery Disease studies recruiting now, 403 (69%) set no upper age limit and 68 (12%) stop at 75 or younger; 38 take children under 18; 47 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 78 studies testing ticagrelor in Coronary Artery Disease, or all of them as a file.
02

Study summary

Guideline recommendations on the use of dual antiplatelet therapy have been formulated that ticagrelor 90 mg twice daily plus aspirin in preference to clopidogrel 75mg daily plus aspirin for ACS patients. Recent study found that ticagrelor 90mg twice a day orally could significantly reduce the occurrence of clopidogrel resistance and adverse cardiovascular events. The previous studies have reported that half-dose ticagrelor had the similar inhibitory effect on platelet aggregation as the standard-dose ticagrelor, which was significantly stronger than that in the clopidogrel group. One-quarter standard-dose ticagrelor provided greater degree of platelet inhibition than standard dose clopidogrel in Chinese patients with stable CAD. But large-scale clinical trials are still needed to confirm the effects of low-dose ticagrelor on platelet function in Chinese patients with coronary heart disease.

Read the detailed description

Dual Antiplatelet Therapy (DAPT) with aspirin and P2Y12 receptor inhibitor remains a cornerstone in the secondary prevention of coronary artery disease (CAD). Clopidogrel is one of the most commonly used antithrombotic agent that inhibits the platelet P2Y(12) adenosine diphosphate (ADP) receptor.

Ticagrelor is an oral, reversibly-binding, direct-acting P2Y12 receptor antagonist used clinically for the prevention of atherothrombotic events in patients with acute coronary syndromes (ACS). Guideline recommendations on the use of dual antiplatelet therapy have been formulated that ticagrelor 90 mg twice daily plus aspirin in preference to clopidogrel 75mg daily plus aspirin for ACS patients. Recent study found that ticagrelor 90mg twice a day orally could significantly reduce the occurrence of clopidogrel resistance and adverse cardiovascular events. The previous studies have reported that half-dose ticagrelor had the similar inhibitory effect on platelet aggregation as the standard-dose ticagrelor, which was significantly stronger than that in the clopidogrel group. One-quarter standard-dose ticagrelor provided greater degree of platelet inhibition than standard dose clopidogrel in Chinese patients with stable CAD. But large-scale clinical trials are still needed to confirm the effects of low-dose ticagrelor on platelet function in Chinese patients with coronary heart disease.

03

Conditions studied

  • Coronary Artery Disease
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients with coronary artery disease

Exclusion criteria

Exclusion Criteria:

  • younger than 18 years of age;
  • anti- therapy with clopidogrel or ticagrelor for less than 5 days;
  • previous or current treatment with any other potentially confounding drugs.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

05

Study design

Phase
Phase 2 / Phase 3
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
3,043 participants (actual)

Study arms

  • Experimental
    ticagrelor 45mg bidpo.

    To observe the efficacy and safety of ticagrelor 45mg bidpo. in patients with coronary artery disease.

    Drug: Ticagrelor

  • Experimental
    ticagrelor 90mg qdpo.

    To observe the efficacy and safety of ticagrelor 90mg qdpo. in patients with coronary artery disease.

    Drug: ticagrelor

  • Active comparator
    ticagrelor 90mg bidpo.

    To observe the efficacy and safety of ticagrelor 90mg bidpo. in patients with coronary artery disease.

    Drug: ticagrelor

  • Active comparator
    clopidogrel 75mg qdpo.

    To observe the efficacy and safety of clopidogrel 75mg qdpo. in patients with coronary artery disease.

    Drug: clopidogrel

Interventions

  • ticagrelor 45 mg twice daily for 5 consecutive days at least.

  • ticagrelor 90 mg once daily for 5 consecutive days at least.

  • ticagrelor 90 mg twice daily for 5 consecutive days at least.

  • clopidogrel 75 mg once daily for 5 consecutive days at least.

06

What researchers measure

Primary outcomes

  1. ADP-induced Inhibition of Platelet Aggregation

    The venous blood samples for platelet function test were drawn after an overnight fast, at 12 hours post-last study-drug dose for subjects receiving twice-daily administrations, and at 24 hours post-last study-drug dose for subjects treated with once-daily regimens. The blood was collected in an evacuated vacuum tube containing 3.2% trisodium citrate and lithium heparin. Then the samples were processed within two hours of blood draw according to standard operating procedure. The physical properties of samples were analyzed using Thromboelastography (TEG) Hemostasis Analyzer (CFMS LEPU-8800, Lepu Medical Technology Co., Ltd, Beijing, China) and automated analytical software. TEG test used four channels to detect the effects of anti-platelet therapy via the arachidonic acid (AA) and ADP pathways. TEG test results were expressed in terms of ADP-induced inhibition of platelet aggregation (IPA, range 0% - 100%), with higher values indicating greater platelet inhibition.

    Time frame: up to 5 days

  2. Number of Participants With Bleeding (Major or Minor Bleeding)

    Major bleeding was defined as type ≥ 3 and minor bleeding as types 1 and 2, in accordance to the Bleeding Academic Research Consortium classification. (Mehran R et al. Standardized bleeding definitions for cardiovascular clinical trials: a consensus report from the Bleeding Academic Research Consortium. Circulation. 2011 Jun 14;123(23):2736-47. doi: 10.1161/CIRCULATIONAHA.110.009449.)

    Time frame: up to 5 days

Secondary outcomes

  1. ADP-induced Platelet-fibrin Clot Strength (MA)

    The physical properties of samples were analyzed using Thromboelastography (TEG) Hemostasis Analyzer (CFMS LEPU-8800, Lepu Medical Technology Co., Ltd, Beijing, China) and automated analytical software. TEG test used four channels to detect the effects of anti-platelet therapy via the arachidonic acid (AA) and ADP pathways. TEG test results were expressed in terms of ADP-induced platelet-fibrin clot strength (MA). A MA\>47mm was shown to have a high predictive value for 3-year post-PCI ischemic events during dual antiplatelet therapy. Moreover, ROC curve and quartile analysis suggested MA\<31 mm as a predictive value for post-PCI bleeding events (J Am Coll Cardiol. 2013;62(24):2261-73. doi: 10.1016/j.jacc.2013.07.101.).

    Time frame: up to 5 days

  2. Number of Participants With High On-Treatment Platelet Reactivity (HTPR)

    HTPR was defined as IPA ≤ 30% and MA ≥ 47 mm.

    Time frame: up to 5 days

  3. Number of Participants With Cardiovascular Event (Cardiovascular Death, New-onset Myocardial Infarction, or Stroke)

    Cardiovascular death was defined as sudden cardiac death, fatal myocardial infarction, death due to heart failure, or death due to other cardiovascular causes. Stroke was defined as the focal loss of neurologic function caused by an ischemic or a hemorrhagic event with residual symptoms lasting at least 24 hours or eventually leading to death.

    Time frame: up to 5 days

  4. Number of Participants With New-onset Dyspnea

    New-onset dyspnea in patients without previous history of dyspnea

    Time frame: up to 5 days

07

Results

Posted Sep 30, 2019

Participant flow

3,737 CAD patients who received either clopidogrel or ticagrelor therapy and underwent TEG test from 11 medical centers. Among these patients, 1,725 subjects were treated with clopidogrel and 2,012 subjects were treated with different ticagrelor regimens.

Participant flow — Overall Study
MilestoneTicagrelor 45mg Bidpo.Ticagrelor 90mg Bidpo.Clopidogrel 75mg Qdpo.Ticagrelor 90mg Qdpo.
Started5255011511506
Completed5255011511506
Not completed0000

Outcome measures

PrimaryADP-induced Inhibition of Platelet Aggregation

The venous blood samples for platelet function test were drawn after an overnight fast, at 12 hours post-last study-drug dose for subjects receiving twice-daily administrations, and at 24 hours post-last study-drug dose for subjects treated with once-daily regimens. The blood was collected in an evacuated vacuum tube containing 3.2% trisodium citrate and lithium heparin. Then the samples were processed within two hours of blood draw according to standard operating procedure. The physical properties of samples were analyzed using Thromboelastography (TEG) Hemostasis Analyzer (CFMS LEPU-8800, Lepu Medical Technology Co., Ltd, Beijing, China) and automated analytical software. TEG test used four channels to detect the effects of anti-platelet therapy via the arachidonic acid (AA) and ADP pathways. TEG test results were expressed in terms of ADP-induced inhibition of platelet aggregation (IPA, range 0% - 100%), with higher values indicating greater platelet inhibition.

Time frame:
up to 5 days
Reported as:
Median · percentage of inhibition of platelet agg
ADP-induced Inhibition of Platelet Aggregation
percentage of inhibition of platelet aggClopidogrel 75mg Qdpo.Ticagrelor 90mg Bidpo.Ticagrelor 45mg Bidpo.Ticagrelor 90mg Qdpo.
ADP-induced Inhibition of Platelet Aggregation54.9 (31.9 to 79.1)80.6 (64.1 to 94)73.6 (52.6 to 93.7)66 (46.9 to 87)
PrimaryNumber of Participants With Bleeding (Major or Minor Bleeding)

Major bleeding was defined as type ≥ 3 and minor bleeding as types 1 and 2, in accordance to the Bleeding Academic Research Consortium classification. (Mehran R et al. Standardized bleeding definitions for cardiovascular clinical trials: a consensus report from the Bleeding Academic Research Consortium. Circulation. 2011 Jun 14;123(23):2736-47. doi: 10.1161/CIRCULATIONAHA.110.009449.)

Time frame:
up to 5 days
Reported as:
Count of participants · Participants
Number of Participants With Bleeding (Major or Minor Bleeding)
ParticipantsClopidogrel 75mg Qdpo.Ticagrelor 90mg Bidpo.Ticagrelor 45mg Bidpo.Ticagrelor 90mg Qdpo.
Minor bleeding1530149
Major bleeding0000
No bleeding1496471511497
SecondaryADP-induced Platelet-fibrin Clot Strength (MA)

The physical properties of samples were analyzed using Thromboelastography (TEG) Hemostasis Analyzer (CFMS LEPU-8800, Lepu Medical Technology Co., Ltd, Beijing, China) and automated analytical software. TEG test used four channels to detect the effects of anti-platelet therapy via the arachidonic acid (AA) and ADP pathways. TEG test results were expressed in terms of ADP-induced platelet-fibrin clot strength (MA). A MA\>47mm was shown to have a high predictive value for 3-year post-PCI ischemic events during dual antiplatelet therapy. Moreover, ROC curve and quartile analysis suggested MA\<31 mm as a predictive value for post-PCI bleeding events (J Am Coll Cardiol. 2013;62(24):2261-73. doi: 10.1016/j.jacc.2013.07.101.).

Time frame:
up to 5 days
Reported as:
Median · mm
ADP-induced Platelet-fibrin Clot Strength (MA)
mmClopidogrel 75mg Qdpo.Ticagrelor 90mg Bidpo.Ticagrelor 45mg Bidpo.Ticagrelor 90mg Qdpo.
ADP-induced Platelet-fibrin Clot Strength (MA)40.3 (27 to 51.6)28.4 (18.5 to 38.9)32.3 (19.5 to 43.9)34.05 (23.6 to 46.1)
SecondaryNumber of Participants With High On-Treatment Platelet Reactivity (HTPR)

HTPR was defined as IPA ≤ 30% and MA ≥ 47 mm.

Time frame:
up to 5 days
Reported as:
Count of participants · Participants
Number of Participants With High On-Treatment Platelet Reactivity (HTPR)
ParticipantsClopidogrel 75mg Qdpo.Ticagrelor 90mg Bidpo.Ticagrelor 45mg Bidpo.Ticagrelor 90mg Qdpo.
HTPR317132332
Non-HTPR1194488502474
SecondaryNumber of Participants With Cardiovascular Event (Cardiovascular Death, New-onset Myocardial Infarction, or Stroke)

Cardiovascular death was defined as sudden cardiac death, fatal myocardial infarction, death due to heart failure, or death due to other cardiovascular causes. Stroke was defined as the focal loss of neurologic function caused by an ischemic or a hemorrhagic event with residual symptoms lasting at least 24 hours or eventually leading to death.

Time frame:
up to 5 days
Reported as:
Count of participants · Participants
Number of Participants With Cardiovascular Event (Cardiovascular Death, New-onset Myocardial Infarction, or Stroke)
ParticipantsClopidogrel 75mg Qdpo.Ticagrelor 90mg Bidpo.Ticagrelor 45mg Bidpo.Ticagrelor 90mg Qdpo.
Participants with cardiovascular death0000
Participants without cardiovascular events1511501525506
Participants with new-onset myocardial infarction0000
Participants with stroke0000
SecondaryNumber of Participants With New-onset Dyspnea

New-onset dyspnea in patients without previous history of dyspnea

Time frame:
up to 5 days
Reported as:
Count of participants · Participants
Number of Participants With New-onset Dyspnea
ParticipantsClopidogrel 75mg Qdpo.Ticagrelor 90mg Bidpo.Ticagrelor 45mg Bidpo.Ticagrelor 90mg Qdpo.
Participants with new-onset dyspnea34293228
Participants without new-onset dyspne1477472493478

Adverse events

Collected over up to 5 days. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Clopidogrel 75mg Qdpo.0/1,511 (0%)0/1,511 (0%)0/1,511 (0%)
Ticagrelor 90mg Bidpo.0/501 (0%)0/501 (0%)0/501 (0%)
Ticagrelor 45mg Bidpo.0/525 (0%)0/525 (0%)0/525 (0%)
Ticagrelor 90mg Qdpo.0/506 (0%)0/506 (0%)0/506 (0%)

Baseline characteristics

Age, Continuous
Age, Continuous(years)Clopidogrel 75mg Qdpo.Ticagrelor 90mg Bidpo.Ticagrelor 45mg Bidpo.Ticagrelor 90mg Qdpo.Total
Median63 (55 to 69)61 (52 to 67)62 (55 to 69)62 (55 to 68)62 (55 to 69)
Sex: Female, Male
Sex: Female, Male(Participants)Clopidogrel 75mg Qdpo.Ticagrelor 90mg Bidpo.Ticagrelor 45mg Bidpo.Ticagrelor 90mg Qdpo.Total
Female5321592012371129
Male9793423242691914
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Clopidogrel 75mg Qdpo.Ticagrelor 90mg Bidpo.Ticagrelor 45mg Bidpo.Ticagrelor 90mg Qdpo.Total
American Indian or Alaska Native00000
Asian15115015255063043
Native Hawaiian or Other Pacific Islander00000
Black or African American00000
White00000
More than one race00000
Unknown or Not Reported00000
Region of Enrollment
Region of Enrollment(participants)Clopidogrel 75mg Qdpo.Ticagrelor 90mg Bidpo.Ticagrelor 45mg Bidpo.Ticagrelor 90mg Qdpo.Total
China15115015255063043
Weight
Weight(kg)Clopidogrel 75mg Qdpo.Ticagrelor 90mg Bidpo.Ticagrelor 45mg Bidpo.Ticagrelor 90mg Qdpo.Total
Median70 (63 to 78)70 (62 to 78)70 (60 to 75)70 (60 to 75)70 (62 to 78)
smoking
smoking(Participants)Clopidogrel 75mg Qdpo.Ticagrelor 90mg Bidpo.Ticagrelor 45mg Bidpo.Ticagrelor 90mg Qdpo.Total
Count of participants7362342262021398
Hypertension
Hypertension(Participants)Clopidogrel 75mg Qdpo.Ticagrelor 90mg Bidpo.Ticagrelor 45mg Bidpo.Ticagrelor 90mg Qdpo.Total
Count of participants8792433322871741
diabetes mellitus
diabetes mellitus(Participants)Clopidogrel 75mg Qdpo.Ticagrelor 90mg Bidpo.Ticagrelor 45mg Bidpo.Ticagrelor 90mg Qdpo.Total
Count of participants426126161117830

11 further baseline measures are reported on the registry.

08

Study locations

1 site
  • Thromboela-Stogram
    Beijing, 100001, China
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Dec 2017 to primary completion in Dec 2018, 12 months.

Results were first posted in Sep 2019, 9 months after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Dec 14, 2017
First posted
Dec 22, 2017
StartActual
Dec 13, 2017
Primary completionActual
Dec 13, 2018
CompletionActual
Feb 13, 2019
Results first posted
Sep 30, 2019
Last update
Sep 30, 2019
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 30, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03381742
Lead sponsor
First Affiliated Hospital of Harbin Medical University
Collaborators
Beijing Anzhen Hospital, The First Affiliated Hospital of Dalian Medical University, The Central Hospital of Jia Mu Si City, First Affiliated Hospital of Kunming Medical University, RenJi Hospital, Tianjin Medical University General Hospital, Weifang People's Hospital, Wuhan Union Hospital, China, Shengjing Hospital, Shaanxi Provincial People's Hospital
Responsible party
Sponsor
First posted
Dec 22, 2017
Start date
Dec 13, 2017
Primary completion
Dec 13, 2018
Completion
Feb 13, 2019
Results posted
Sep 30, 2019
Last update
Sep 30, 2019

Study contacts

Yue Li, MD
principal investigator · Cardiovascular Department, the First Affiliated Hospital of Harbin Medical University

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Ticagrelor

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