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CompletedNCT04442919METHANEUpdated Mar 12, 2024

Influence of METHoxyflurane on ANtiplatelet Effect of Ticagrelor in Patients With Unstable Angina Pectoris

A Phase 4 interventional study of Ticagrelor followed with Methoxyflurane and Ticagrelor followed with Morphine in Unstable Angina, sponsored by Collegium Medicum w Bydgoszczy. Completed at 1 site in Poland. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2024-03-12.

Sponsored by Collegium Medicum w Bydgoszczy · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
72
Allocation
Randomized
Ages
18 Years to 80 Years
Sex
All
01

Study summary

The purpose of this study is to evaluate differences in the pharmacokinetics and pharmacodynamics of ticagrelor and its active metabolite in patients who received ticagrelor followed with methoxyflurane versus ticagrelor followed with morphine or ticagrelor alone due to unstable angina pectoris

Read the detailed description

Results of the IMPRESSION trial published in 2015 proved that morphine use in patients with acute coronary syndromes (ACS) is associated with undesirable impact on pharmacokinetics (PK) and pharmacodynamics (PD) of ticagrelor. Despite that, morphine is still a standard analgesic treatment in ACS patients and it should not be routinely withdrawn. Based on contemporary knowledge, morphine, acting via mi-opioid receptors, was found to inhibit gastrointestinal motility or induce adverse effects such as nausea or vomiting.

We decided to design a clinical study aiming to evaluate the impact of methoxyflurane on PD of ticagrelor in patients diagnosed with unstable angina pectoris (UA). Methoxyflurane is an inhaled anesthetic, registered in Poland in emergency medicine for pain alleviation in trauma patients. The drug was widely used in 1960s to induce general anesthesia, however its clinical utility was reduced with the development of novel anesthetic agents. Taking into account its different mechanism of action, it can be presumed that, contrary to morphine, no respiratory depression should be observed as well as no attenuation or delay of antiaggregatory effect of ticagrelor should occur, as no interaction with mi-receptor in gastrointestinal tract is related to activity of methoxyflurane.

Patients will be randomized in a 1:1:1 ratio into the study arms as follows: 1) 180 mg ticagrelor (2 integral tablets of 90 mg ticagrelor) followed by 3 mg inhaled methoxyflurane, 2) 180 mg ticagrelor followed by 5 mg intravenous morphine, 3) 180 mg ticagrelor alone

02

Conditions studied

  • Unstable Angina

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03

In context

Angina, Unstable

328 studies on the registry are indexed under Angina, Unstable; 42 are open to participants now.

This study's enrollment of 72 is below the median of 208 across 198 interventional studies indexed under Angina, Unstable.

Browse Angina, Unstable studies →

Lead sponsor

Collegium Medicum w Bydgoszczy is the lead sponsor of 26 studies on the registry; 4 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 80 Years
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

  • Provision of prior to any study specific procedures
  • Diagnosis of unstable angina
  • Male or non-pregnant female, aged 18-80 years
  • Provision of informed consent for angiography and PCI
  • GRACE score \<140 pts

Exclusion criteria

Exclusion Criteria:

  • Treatment with ticlopidine, clopidogrel, prasugrel or ticagrelor within 14 days before the study enrollment
  • Current treatment with morphine or any opioid "mi" receptor agonist
  • to ticagrelor
  • Current treatment with oral anticoagulant or chronic therapy with low-molecular-weight heparin
  • Active bleeding
  • History of intracranial hemorrhage
  • Recent gastrointestinal bleeding (within 30 days)
  • History of coagulation disorders
  • count less than \<100 x10\^3/mcl
  • concentration less than 10.0 g/dl
  • History of moderate or severe hepatic impairment
  • History of major surgery or severe trauma (within 3 months)
  • Risk of bradycardic events as judged by the investigator
  • Second- or third-degree atrioventricular block during screening for eligibility
  • History of asthma or severe
  • Kidney disease requiring dialysis
  • Manifest infection or inflammatory state
  • Killip class III or IV during screening for eligibility
  • Respiratory failure
  • History of severe chronic heart failure ( class III or IV)
  • Concomitant therapy with strong inhibitors (ketoconazole, itraconazole, voriconazole, telithromycin, clarithromycin, nefazadone, ritonavir, saquinavir, nelfinavir, indinavir, atazanavir) or strong CYP3A inducers (rifampicin, phenytoin, carbamazepine, dexamethasone, phenobarbital) within 14 days and during study treatment
  • Body weight below 50 kg
Terms in these criteria, in plain language(7)

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.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

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.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

COPD

Chronic obstructive pulmonary disease: long-term lung disease that makes it hard to breathe out, including emphysema and chronic bronchitis.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

CYP3A (CYP3A4) inhibitors and inducers

CYP3A is a group of enzymes, mainly CYP3A4, in the liver and gut that break down many medicines. Some medicines, supplements and foods (grapefruit, St John’s wort) slow them down or speed them up, which changes how much of a study drug stays in the body.

Studies list them so they can be avoided or switched; bring a list of everything you take, including supplements.

05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
72 participants (actual)

Study arms

  • Experimental
    Ticagrelor followed with methoxyflurane

    patients who received ticagrelor followed with inhaled methoxyflurane due to unstable angina

    Drug: Ticagrelor followed with Methoxyflurane

  • Active comparator
    Ticagrelor followed with morphine

    patients who received ticagrelor followed with intravenous morphine due to unstable angina

    Drug: Ticagrelor followed with Morphine

  • Active comparator
    Ticagrelor

    patients who received ticagrelor without any analgesia due to unstable angina

    Drug: Ticagrelor alone

Interventions

  • DrugTicagrelor followed with Methoxyflurane

    patients who received ticagrelor followed with inhaled methoxyflurane due to unstable angina

    Also known as: Brilique + Penthrox

  • DrugTicagrelor followed with Morphine

    patients who received ticagrelor followed with intravenous morphine due to unstable angina

    Also known as: Brilique + Morphine

  • patients who received ticagrelor without any analgesia due to unstable angina

    Also known as: Brilique

06

What researchers measure

Primary outcomes

  1. Mean platelet reactivity between the study arms

    Mean platelet reactivity between the study arms, assessed using the Multiplate Analyzer

    Time frame: 6 hours

Secondary outcomes

  1. The percentage of high platelet reactivity patients (HPR) throughout the study period

    the percentage of patients with high platelet reactivity throughout the study period

    Time frame: 6 hours

  2. Mean time to achieve platelet reactivity below the threshold for HPR

    Mean time required for patients to receive low platelet reactivity in each study arm

    Time frame: 6 hours

  3. area under the plasma concentration-time curve for ticagrelor and its active metabolite between the study arms

    area under the plasma concentration-time curve for ticagrelor and its active metabolite between the study arms

    Time frame: 6 hours

07

Study locations

1 site
  • Cardiology Department, Dr. A. Jurasz University Hospital
    Bydgoszcz, Kujawsko-Pomorskie 85-094, Poland
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 12, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04442919
Lead sponsor
Collegium Medicum w Bydgoszczy
Responsible party
Jacek Kubica (Professor, Collegium Medicum w Bydgoszczy) — Principal investigator
First posted
Jun 23, 2020
Start date
Jun 1, 2020
Primary completion
Jan 31, 2024
Completion
Feb 29, 2024
Last update
Mar 12, 2024

Study contacts

Jacek Kubica, Professor
principal investigator · Collegium Medicum w Bydgoszczy

Oversight

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

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This study is completed, as verified in Mar 2024. You cannot join it, but the record below documents what was studied.

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