Cangrelor vs. Ticagrelor for Early Platelet Inhibition in STEMI

Myocardial Infarction Clinical Trial

— CanTi  

Official title:

Cangrelor vs. Ticagrelor for Early Platelet Inhibition in ST-elevation Myocardial Infarction

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT03182855
• Other study ID #: 2016-003721-41
• Status: Not yet recruiting
• Phase: Phase 4
• Start date: September 1, 2018
• Est. completion date: August 1, 2019

Study information

• Verified date: June 2018
• Source: University of Aarhus
• Contact: Jacob T Sorensen, MD, PhD
• Phone: +4540143563
• Email: jacsoe[@]rm.dk
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This randomized, controlled trial compares the anti-thrombotic effect of cangrelor and ticagrelor on platelet activity in patients with acute ST-elevation myocardial infarction.

Patients will receive either prehospital ticagrelor (180 mg - crushed) or in-hospital cangrelor (bolus 30 μg/kg within 1 minute followed by infusion (4 μg/kg/minute) for two hours) followed by 180 mg ticagrelor.

The primary study end-point is platelet reactivity at sheath insertion, at the end of the PCI procedure (before sheath removal) and two hours after PCI is initiated. The secondary end-point is the proportion of patients with inappropriate or harmful P2Y12 administration.

Description:

In patients with ST-elevation myocardial infarction (STEMI) early restoration of blood flow in the culprit coronary artery is essential to reduce infarct size and thereby mortality and morbidity. The recommended method for achieving reperfusion is primary percutaneous coronary intervention (PPCI) (1,2). Early initiation of adjunctive antithrombotic therapy is important to prevent further thrombus formation and to facilitate PPCI.

International guidelines currently recommend immediate oral or intravenous administration of aspirin and intravenous administration of heparin in patients with suspected STEMI (1,2).

A second platelet inhibitor (of the P2Y12 family) is often added already in the ambulance. This enhances the antiplatelet effect, but also increases bleeding risk.

A recently introduced antithrombotic agent, that can be administered intravenously, can potentially achieve the same antithrombotic effect at the same time of the oral agent, with the added benefit, that administration can await coronary angiography. This would reduce the risk of administrating powerful antithrombotic medicine to patients with diagnosis other than STEMI.

In the ATLANTIC trial (3) prehospital administration was compared to in-hospital (catheterization laboratory) administration of ticagrelor. The trial indicated that ticagrelor could safely be administered in the ambulance, although there was no apparent effect on Thrombolysis in Myocardial Infarction (TIMI) flow in the culprit coronary artery and no effect on ST-segment resolution in the ECG. However, the median time difference between ticagrelor administration in the two groups was only 31 minutes. This might not leave enough time for adequate platelet inhibition in the prehospital group.

In patients with NSTEMI (Non-ST-elevation myocardial infarction), pretreatment with prasugrel has been shown to be associated with increased bleeding risk and confers no benefit on ischemic outcomes (4). Thus, there are indications that the addition of oral P2Y12 inhibitor can await the coronary angiography, thereby minimizing the risk of excessive platelet inhibition in patients with a high bleeding risk or a potentially lethal differential diagnosis such as aortic dissection (5). Previous studies document that approximately 15% of patients with suspected STEMI have a final diagnosis other than an acute coronary syndrome (6). There is a fine balance between the benefit and possible deleterious effects of early, aggressive oral platelet inhibition in patients with suspected STEMI.

Recently a novel, intravenous P2Y12 inhibitor - cangrelor - has been released. Cangrelor enables immediate inhibition of the platelet P2Y12 inhibitor. The drug has a short half-life, is reversible and is only effective during administration (7). This contrasts with the available oral P2Y12 inhibitors, which all induce inhibition of the platelets for several days. Although ticagrelor is reversible, the platelet inhibition induced by this widely used, potent drug lasts for at least 3 days (8). The effects of cangrelor on platelet inhibition and clinical outcome have been documented in three, large clinical randomized trials (9-11).

Currently it is unknown whether platelet inhibition achieved by cangrelor administered in the catheterization laboratory is more effective compared to ticagrelor administered in the ambulance in patients with suspected STEMI.

The objective of this trial is to compare the effect of oral ticagrelor vs. intravenous cangrelor on platelet inhibition in ST-elevation myocardial infarction.

Patients will be included in the ambulance and randomized to one of two treatment groups; either to receive oral ticagrelor or intravenous cangrelor.

The study randomization will not be blinded to either investigator or patient (Open label, randomized, controlled clinical trial).

The hypothesis is that platelet inhibition with cangrelor administered intravenously in the catheterization laboratory after coronary angiography, but before PPCI is as effective as platelet inhibition achieved by ticagrelor administered orally in the ambulance in patients with suspected STEMI.

It is also assumed that administration of a P2Y12 inhibitor after coronary angiography reduces the proportion of inappropriate administration due to a final diagnosis other than STEMI.

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 80
• Est. completion date: August 1, 2019
• Est. primary completion date: June 1, 2019
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 90 Years

Eligibility

Inclusion Criteria:

1. Patients triaged for PPCI due to suspicion of STEMI.

2. Symptom duration < 12 hours

Exclusion Criteria:

1. Previous inclusion in the study

2. Already in treatment with ticagrelor, prasugrel or clopidogrel

3. Treatment with oral anticoagulants (warfarin, coumarins, rivaroxaban, apixaban, dabigatran)

4. Adjunctive use of glycoprotein IIb/IIIa inhibitor during PCI

5. Active bleeding

6. Known, severe kidney failure (GFR < 30 ml/min) and/or liver disease

7. Women of child bearing ability who are not using contraceptive medication

8. Severe mental or psychiatric disease, altered mental state (including unconsciousness) making it impossible to achieve informed consent

Related Conditions & MeSH terms

• Acute Coronary Syndrome
• Infarction
• Myocardial Infarction
• ST Elevation Myocardial Infarction
• STEMI - ST Elevation Myocardial Infarction

Intervention

Drug:
• Ticagrelor
ADP-receptor blocker. Oral formulation. Standard Therapy in Acute Myocardial Infarction. Administered in the ambulance in arm 1 and in the hospital (catheterization laboratory) in arm 2.
• Cangrelor Tetrasodium
Intravenous ADP-receptor blocker. Administered after hospital arrival in the catheterization laboratory.

Locations

Country	Name	City	State
Denmark	Aarhus University Hospital	Aarhus

Sponsors (1)

Lead Sponsor	Collaborator
University of Aarhus

Country where clinical trial is conducted

Denmark, 

References & Publications (15)

Alexopoulos D, Xanthopoulou I, Mavronasiou E, Stavrou K, Siapika A, Tsoni E, Davlouros P. Randomized assessment of ticagrelor versus prasugrel antiplatelet effects in patients with diabetes. Diabetes Care. 2013 Aug;36(8):2211-6. doi: 10.2337/dc12-2510. Ep — View Citation

Angiolillo DJ, Firstenberg MS, Price MJ, Tummala PE, Hutyra M, Welsby IJ, Voeltz MD, Chandna H, Ramaiah C, Brtko M, Cannon L, Dyke C, Liu T, Montalescot G, Manoukian SV, Prats J, Topol EJ; BRIDGE Investigators. Bridging antiplatelet therapy with cangrelor — View Citation

Aradi D, Collet JP, Mair J, Plebani M, Merkely B, Jaffe AS, Möckel M, Giannitsis E, Thygesen K, ten Berg JM, Mueller C, Storey RF, Lindahl B, Huber K; Study Group on Biomarkers in Cardiology of the Acute Cardiovascular Care Association of the European Society of Cardiology; Working Group on Thrombosis of the European Society of Cardiology. Platelet function testing in acute cardiac care - is there a role for prediction or prevention of stent thrombosis and bleeding? Thromb Haemost. 2015 Feb;113(2):221-30. doi: 10.1160/TH14-05-0449. Epub 2014 Nov 20. — View Citation

Becker S, Chisholm G, Maeng M. Positive predictive value of clinically suspected ST-segment elevation myocardial infarction using angiographic verification. Am J Cardiol. 2013 Oct 1;112(7):923-7. doi: 10.1016/j.amjcard.2013.05.026. Epub 2013 Jun 14. — View Citation

Bhatt DL, Lincoff AM, Gibson CM, Stone GW, McNulty S, Montalescot G, Kleiman NS, Goodman SG, White HD, Mahaffey KW, Pollack CV Jr, Manoukian SV, Widimsky P, Chew DP, Cura F, Manukov I, Tousek F, Jafar MZ, Arneja J, Skerjanec S, Harrington RA; CHAMPION PLA — View Citation

Bhatt DL, Stone GW, Mahaffey KW, Gibson CM, Steg PG, Hamm CW, Price MJ, Leonardi S, Gallup D, Bramucci E, Radke PW, Widimský P, Tousek F, Tauth J, Spriggs D, McLaurin BT, Angiolillo DJ, Généreux P, Liu T, Prats J, Todd M, Skerjanec S, White HD, Harrington — View Citation

Gurbel PA, Bliden KP, Butler K, Tantry US, Gesheff T, Wei C, Teng R, Antonino MJ, Patil SB, Karunakaran A, Kereiakes DJ, Parris C, Purdy D, Wilson V, Ledley GS, Storey RF. Randomized double-blind assessment of the ONSET and OFFSET of the antiplatelet effe — View Citation

Hansson EC, Dellborg M, Lepore V, Jeppsson A. Prevalence, indications and appropriateness of antiplatelet therapy in patients operated for acute aortic dissection: associations with bleeding complications and mortality. Heart. 2013 Jan;99(2):116-21. doi: — View Citation

Harrington RA, Stone GW, McNulty S, White HD, Lincoff AM, Gibson CM, Pollack CV Jr, Montalescot G, Mahaffey KW, Kleiman NS, Goodman SG, Amine M, Angiolillo DJ, Becker RC, Chew DP, French WJ, Leisch F, Parikh KH, Skerjanec S, Bhatt DL. Platelet inhibition — View Citation

Montalescot G, Bolognese L, Dudek D, Goldstein P, Hamm C, Tanguay JF, ten Berg JM, Miller DL, Costigan TM, Goedicke J, Silvain J, Angioli P, Legutko J, Niethammer M, Motovska Z, Jakubowski JA, Cayla G, Visconti LO, Vicaut E, Widimsky P; ACCOAST Investigat — View Citation

Montalescot G, van 't Hof AW, Lapostolle F, Silvain J, Lassen JF, Bolognese L, Cantor WJ, Cequier A, Chettibi M, Goodman SG, Hammett CJ, Huber K, Janzon M, Merkely B, Storey RF, Zeymer U, Stibbe O, Ecollan P, Heutz WM, Swahn E, Collet JP, Willems FF, Bara — View Citation

O'Gara PT, Kushner FG, Ascheim DD, Casey DE Jr, Chung MK, de Lemos JA, Ettinger SM, Fang JC, Fesmire FM, Franklin BA, Granger CB, Krumholz HM, Linderbaum JA, Morrow DA, Newby LK, Ornato JP, Ou N, Radford MJ, Tamis-Holland JE, Tommaso JE, Tracy CM, Woo YJ, Zhao DX; CF/AHA Task Force. 2013 ACCF/AHA guideline for the management of ST-elevation myocardial infarction: executive summary: a report of the American College of Cardiology Foundation/American Heart Association Task Force on Practice Guidelines. Circulation. 2013 Jan 29;127(4):529-55. doi: 10.1161/CIR.0b013e3182742c84. Epub 2012 Dec 17. — View Citation

Parodi G, Valenti R, Bellandi B, Migliorini A, Marcucci R, Comito V, Carrabba N, Santini A, Gensini GF, Abbate R, Antoniucci D. Comparison of prasugrel and ticagrelor loading doses in ST-segment elevation myocardial infarction patients: RAPID (Rapid Activ — View Citation

Parodi G, Xanthopoulou I, Bellandi B, Gkizas V, Valenti R, Karanikas S, Migliorini A, Angelidis C, Abbate R, Patsilinakos S, Baldereschi GJ, Marcucci R, Gensini GF, Antoniucci D, Alexopoulos D. Ticagrelor crushed tablets administration in STEMI patients: — View Citation

Task Force on the management of ST-segment elevation acute myocardial infarction of the European Society of Cardiology (ESC), Steg PG, James SK, Atar D, Badano LP, Blömstrom-Lundqvist C, Borger MA, Di Mario C, Dickstein K, Ducrocq G, Fernandez-Aviles F, Gershlick AH, Giannuzzi P, Halvorsen S, Huber K, Juni P, Kastrati A, Knuuti J, Lenzen MJ, Mahaffey KW, Valgimigli M, van 't Hof A, Widimsky P, Zahger D. ESC Guidelines for the management of acute myocardial infarction in patients presenting with ST-segment elevation. Eur Heart J. 2012 Oct;33(20):2569-619. doi: 10.1093/eurheartj/ehs215. Epub 2012 Aug 24. — View Citation

* Note: There are 15 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Platelet reactivity 10 minutes PCI after is initiated	Platelet reactivity measured in platelet reactivity units (PRU) by the VerifyNow® assay 10 minutes after PCI is initiated.	10 minutes
Secondary	Platelet reactivity before and after PCI	Effect on platelet reactivity, measured by VerifyNow® after sheath insertion, at the end of the PCI procedure (before sheath removal) and two hours after PCI is initiated	2 hours
Secondary	Proportion of patients with inappropriate or harmful P2Y12 administration	This is defined as patients with a diagnosis other than acute myocardial infarction or patients where prehospital ticagrelor administration delays surgery (cardiac or other) due to excess bleeding risk.	4 hours