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AnaphylaxisPhase 4PIMATNCT03366298

Pharmacokinetics of Intramuscular Adrenaline in Food--Allergic Teenagers

A Phase 4 study testing Epipen 0.3mg, Emerade 300mcg and Emerade 500mcg in people with Anaphylaxis, run by Imperial College London at 1 site in United Kingdom.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Food allergy affects up to 2% of adults and 8% of children in the United Kingdom (UK), and is a major public health issue. It is the commonest cause of life-threatening allergic reactions (anaphylaxis), which can be fatal. Read more about this study

Who is it for?
Ages 13 to 18 years
Conditions the study is for
Anaphylaxis
What is being tested?
Epipen 0.3mg, Emerade 300mcg and Emerade 500mcg
Could I receive a placebo?
No, everyone receives an active treatment
How many people
12 participants
Where
1 siteUnited Kingdom
Study dates
24 Nov 2017to 2 Oct 2018
Phase
Phase 4
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 13 to 18 years
  • All sexes
  • No healthy volunteers
  • Child, Adult

Who may be able to join

  • Age 13 - 18 years inclusive
  • Body mass >40kg
  • Prescription of AAI due to physician diagnosis of Immunoglobulin E-mediated food allergy.
  • Written informed consent from parent/guardian together with patient assent, for participants under 16 years of age. For young people age 16+ years, consent will be obtained from the participant themselves.

Who cannot join

  • Known cardiac comorbidity (including hypertension, structural or electrophysiological diagnoses) or prescribed a medicine to control cardiovascular disease/hypertension.
  • Known endocrine or renal disease
  • Poorly controlled asthma requiring daily rescue treatment with a bronchodilator.
  • Pregnancy
  • Unwilling or unable to comply with study requirements

Trial locations and contacts

1 site in 1 country.

United Kingdom1 site
  • Imperial College London / Imperial College Healthcare NHS Trust

    London, W2 1NY

Other trials in United Kingdom

About this study

Official title: Pharmacokinetics of Intramuscular Adrenaline in Food--Allergic Teenagers: Does Dose Matter?

Food allergy affects up to 2% of adults and 8% of children in the United Kingdom (UK), and is a major public health issue. It is the commonest cause of life-threatening allergic reactions (anaphylaxis), which can be fatal. Adrenaline (epinephrine) auto-injector (AAI) devices are the first-line treatment for anaphylaxis, yet in a UK survey, over 80% of 245 teenagers experiencing anaphylaxis did not use their AAI. Delays in, or lack of adrenaline (epinephrine) administration during anaphylaxis are risk factors for fatal anaphylaxis.

In 2010, a coroner's investigation into the death of a food-allergic teenager in the UK raised several questions around AAI safety and efficacy, since the teenager died despite administering her auto-injector device. This prompted a review by the Medicines and Healthcare products Regulatory Agency (MHRA) in 2014 into the clinical and quality considerations of AAIs. Two recommendations which came from the review was that companies 'should be encouraged to develop a 0.5mg [dose] AAI.' In the UK currently only Emerade, one of the three companies selling AAIs, manufactures a 0.5mg (500mcg) version. Emerade also has a longer needle length (23mm) compared to other AAIs (typically 15mm).

Read more

The investigators plan to formally assess the pharmacokinetics (PK) and pharmacodynamics (PD) of self-injection with intramuscular adrenaline (epinephrine) in teenagers at risk of anaphylaxis due to food allergy, and have been prescribed AAI.

  1. The investigators will compare self-injection with 300mcg vs 500mcg in teenagers of body weight >40kg. In a 40kg person, an adrenaline dose of 300mcg results in an effective UNDER-dosing of 30% by body weight.
  2. The investigators will also assess the impact of needle length on injection, by comparing two different devices, both of which deliver 300mcg, but one via a 15mm needle and the other with a 23mm needle.
Conditions
Anaphylaxis
Being tested
Epipen 0.3mg, Emerade 300mcg, Emerade 500mcg
Medical subject headings
Anaphylaxis

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Epipen 0.3mgCombination product

    Also called Epinephrine

    Epipen 0.3mg auto-injector

  • Emerade 300mcgCombination product

    Also called Epinephrine

    Emerade 300mcg auto-injector

  • Emerade 500mcgCombination product

    Also called Epinephrine

    Emerade 500mcg auto-injector

Study groups in NCT03366298
Study groupRoleWhat they receive
1Active comparatorVisit 1: Emerade 300mcg then Epipen 0.3mg Visit 2: Emerade 500mcg
Receives: Combination Product: Epipen 0.3mg; Combination Product: Emerade 300mcg; Combination Product: Emerade 500mcg
2Active comparatorVisit 1: Epipen 0.3mg then Emerade 300mcg Visit 2: Emerade 500mcg
Receives: Combination Product: Epipen 0.3mg; Combination Product: Emerade 300mcg; Combination Product: Emerade 500mcg
3Active comparatorVisit 1: Emerade 500mcg Visit 2: Emerade 300mcg then Epipen 0.3mg
Receives: Combination Product: Epipen 0.3mg; Combination Product: Emerade 300mcg; Combination Product: Emerade 500mcg
4Active comparatorVisit 1: Emerade 500mcg Visit 2: Epipen 0.3mg then Emerade 300mcg
Receives: Combination Product: Epipen 0.3mg; Combination Product: Emerade 300mcg; Combination Product: Emerade 500mcg

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Plasma Catecholamine Levels (Maximum Concentration, Cmax)

    Pharmacokinetics (plasma catecholamine levels: Cmax) following intramuscular self-injection of 300mcg and 500mcg adrenaline using an auto-injector device, in food-allergic teenagers over 40kg.

    Measured: 3 hours

  2. Plasma Catecholamine Levels (Time to Maximum Concentration, Tmax)

    Pharmacokinetics (plasma catecholamine levels: Tmax) following intramuscular self-injection of 300mcg and 500mcg adrenaline using an auto-injector device, in food-allergic teenagers over 40kg.

    Measured: 3 hours

  3. Plasma Catecholamine Levels (Maximum Concentration, Area-under-curve (AUC))

    Pharmacokinetics (plasma catecholamine levels: AUC) following intramuscular self-injection of 300mcg and 500mcg adrenaline using an auto-injector device, in food-allergic teenagers over 40kg.

    Baseline corrected.

    Measured: At at the following timepoints following injection: 5, 10, 15, 20, 30, 45, 60, 80, 100, 120 and 180 minutes

Secondary outcomes (11)
  1. Change in Heart Rate Following Self-injection of Adrenaline (300mcg, 500mcg) on Separate Occasions.

    Pharmacodynamics (heart rate) following intramuscular self-injection of 300mcg and 500mcg adrenaline using an auto-injector device, in food-allergic teenagers over 40kg.

    Measured: 3 hours

  2. Change in Blood Pressure Following Self-injection of Adrenaline (300mcg, 500mcg) on Separate Occasions.

    Pharmacodynamics (blood pressure) following intramuscular self-injection of 300mcg and 500mcg adrenaline using an auto-injector device, in food-allergic teenagers over 40kg.

    Measured: 3 hours

  3. Change in Stroke Volume Following Self-injection of Adrenaline (300mcg, 500mcg) on Separate Occasions.

    Pharmacodynamics (stroke volume) following intramuscular self-injection of 300mcg and 500mcg adrenaline using an auto-injector device, in food-allergic teenagers over 40kg.

    Measured: 3 hours

  4. Impact of Needle Length on Pharmacokinetics (Plasma Catecholamine Levels: Cmax)

    Pharmacokinetics (plasma catecholamine levels: Cmax) following intramuscular self-injection of 300mcg adrenaline using two auto-injector devices with different needle lengths (15mm vs 23mm), in food-allergic teenagers over 40kg.

    Measured: 3 hours

  5. Impact of Needle Length on Pharmacokinetics (Plasma Catecholamine Levels: Tmax)

    Pharmacokinetics (plasma catecholamine levels: Tmax) following intramuscular self-injection of 300mcg adrenaline using two auto-injector devices with different needle lengths (15mm vs 23mm), in food-allergic teenagers over 40kg.

    Measured: 3 hours

  6. Impact of Needle Length on Pharmacokinetics (Plasma Catecholamine Levels: AUC)

    Pharmacokinetics (plasma catecholamine levels: AUC) following intramuscular self-injection of 300mcg adrenaline using two auto-injector devices with different needle lengths (15mm vs 23mm), in food-allergic teenagers over 40kg.

    Measured: 3 hours

  7. Impact of Needle Length on Pharmacodynamics (Cardiovascular Parameters: Heart Rate)

    The pharmacodynamics (cardiovascular parameters: heart rate) following intramuscular self-injection of 300mcg adrenaline using two auto-injector devices with different needle lengths (15mm vs 23mm), in food-allergic teenagers over 40kg.

    Measured: 3 hours

  8. Impact of Needle Length on Pharmacodynamics (Cardiovascular Parameters: Blood Pressure)

    The pharmacodynamics (cardiovascular parameters: blood pressure) following intramuscular self-injection of 300mcg adrenaline using two auto-injector devices with different needle lengths (15mm vs 23mm), in food-allergic teenagers over 40kg.

    Measured: 3 hours

  9. Impact of Needle Length on Pharmacodynamics (Cardiovascular Parameters: Stroke Volume)

    The pharmacodynamics (cardiovascular parameters: stroke volume) following intramuscular self-injection of 300mcg adrenaline using two auto-injector devices with different needle lengths (15mm vs 23mm), in food-allergic teenagers over 40kg.

    Measured: 3 hours

  10. Adverse Events Following Self-administration of Adrenaline Via Autoinjector Device

    Adverse events following self-administration of adrenaline via autoinjector device defined as in protocol

    Measured: 1 day

  11. Change in Health-related Quality of Life (HRQL) as Measured Using FAQLQ

    The impact of self-administration of adrenaline autoinjectors (in a non-reaction setting) on health-related quality of life (HRQL) measures in food-allergic teenagers and their parents.

    Measured: 1 month

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted8 Dec 2017
  2. Study start24 Nov 2017
  3. Primary completion2 Oct 2018
  4. Study completion2 Oct 2018

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Crossover
Masking
None (open label)
Enrolment
12 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03366298
Sponsor's protocol ID
17SM4137
Other IDs
2017-003239-13, 232931, 2017
Acronym
PIMAT
Status last verified
Aug 2022
First submitted
21 Nov 2017
Last updated
7 Sep 2022
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Patel N, Isaacs E, Duca B, Nagaratnam N, Donovan J, Fontanella S, Turner PJ. Optimal dose of adrenaline auto-injector for children and young people at risk of anaphylaxis: A phase IV randomized controlled crossover study. Allergy. 2023 Jul;78(7):1997-2006. doi: 10.1111/all.15675. Epub 2023 Feb 23.

    PubMed 36794963

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Epipen 0.3mg, Emerade 300mcg and Emerade 500mcg in people with Anaphylaxis, run by Imperial College London at 1 site in United Kingdom.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 7 Sep 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United Kingdom. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 5 Apr 2021). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Plasma Catecholamine Levels (Maximum Concentration, Cmax) (time frame: 3 hours). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03366298, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 7 Sep 2022.

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