Acid-Sensing Ion Channel and Migraine Disease Proof of Concept Study on the Efficacy of Amiloride in the Prophylaxis of Migraine Aura (APAM)

November 27, 2025 updated by: Centre Hospitalier Universitaire de Nice
Recent data suggest involvement of Acid-Sensing Ion Channel channels in the pathophysiology of migraine making these channels a therapeutic target of migraine disease. The implication of Acid-Sensing Ion Channels is discussed through Acid-Sensing Ion Channel-1 which is the most expressed Acid-Sensing Ion Channel channel subtype in the central nervous system. In a mouse model, cortical spreading depression is inhibited by different Acid-Sensing Ion Channel blockers including amiloride which is a non-selective blocker of the Acid-Sensing Ion Channel-1 channel. From a translational perspective, an efficacy of amiloride on a series of migraine patients suffering from severe aura in open conditions. The APAM study is a proof-of-concept study that aims to evaluate the effect of amiloride in the prophylaxis of migraine with aura. This is a randomized crossover study versus placebo conducted in 3 French headache centers.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
40

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • France
      • Bron, France
        • Not yet recruiting
        • Hopital Pierre Wertheimer
        • Contact:
          • Geneviève DEMARQUAY, Dr
      • Clermont-Ferrand, France
        • Not yet recruiting
        • Chu Gabriel Montpied
        • Contact:
          • Xavier MOISSET, Dr
      • Marly, France
        • Recruiting
        • AP-HM
        • Contact:
          • Anne DONNET, Dr
      • Montpellier, France
        • Recruiting
        • CHU de Montpellier
        • Contact:
          • Anne DUCROS, Pr
      • Nice, France
        • Recruiting
        • CHU de Nice
        • Contact:
          • Michel LANTERI-MINET, Dr

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Diagnosis of migraine with aura code
  • At least 1 aura with aura per month in the 3 months prior to inclusion
  • No prophylactic antimigraine treatment for at least 1 month prior to inclusion
  • For women of childbearing age, use of a reliable contraceptive method at least 3 months before and 1 month after the study
  • Signature of written informed consent
  • Patient affiliated with Social Security

Exclusion Criteria:

  • Existence of contraindication to taking amiloride:

    • Known hypersensitivity to the molecule
    • Hyperkalemia (potassium level (> 5.5 mmol / l))
    • Use of another hyperkalemic diuretic or potassium salts
    • Renal insufficiency (clearance <60 ml / min)
    • Severe hepatocellular insufficiency
    • In combination with lithium, converting enzyme inhibitors, angiotensin II inhibitors (except if there is hypokalemia), ciclosporin, tacrolimus, non-antiarrhythmic drugs giving torsades de pointes
  • Cardiovascular and renal history, for subjects over 75 years old
  • Patient, who from an investigator's point of view would not be compliant to the procedure of the study
  • Pregnant or lactating patient
  • Patient under trusteeship, under guardianship, protected by law

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Other: placebo-amiloride
Patients will be treated for 12 weeks with placebo and then after a 4 week wash-out period, will be treated for 12 weeks with amiloride.
Drug: Amiloride
Treatment by Amiloride vs placebo in crossover
Drug: Placebos
Treatment by Amiloride vs placebo in crossover
Other: amiloride -placebo
Patients will be treated for 12 weeks with amiloride and then after a 4 week wash-out period, will be treated for 12 weeks with placebo.
Drug: Amiloride
Treatment by Amiloride vs placebo in crossover
Drug: Placebos
Treatment by Amiloride vs placebo in crossover

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Number of attacks with aura, with or without headache.
Time Frame: 12 weeks
12 weeks

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Number of days with migraine headache, with or without aura
Time Frame: 12 weeks
12 weeks
Functional repercussion
Time Frame: 12 weeks
Anxiety and depression score on the Hospital Anxiety and Depression scale scale
12 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Centre Hospitalier Universitaire de Nice

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Michel LANTERI-MINET, Dr, Centre Hospitalier Universitaire de Nice

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 11, 2020

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
August 19, 2019

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 19, 2019

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 21, 2019

Study Record Updates

Last Update Posted (Estimated)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
December 4, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 27, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 16-API-01

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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