| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated | 
| Migraine with aura |  
| Migraine avec aura |  | 
| E.1.1.1 | Medical condition in easily understood language | 
| Migraine with aura |  
| Migraine avec aura |  | 
| E.1.1.2 | Therapeutic area | Not possible to specify | 
| MedDRA Classification | 
| E.1.2 Medical condition or disease under investigation | 
| 
| E.1.2 | Version | 20.0 |  
| E.1.2 | Level | PT |  
| E.1.2 | Classification code | 10027607 |  
| E.1.2 | Term | Migraine with aura |  
| E.1.2 | System Organ Class | 10029205 - Nervous system disorders |  | 
| E.1.3 | Condition being studied is a rare disease | No | 
| E.2 Objective of the trial | 
| E.2.1 | Main objective of the trial | 
| Evaluate the efficacy of amiloride (non-specific ASIC-1 channel blocker) in the prophylaxis of migraine with aura |  
| Evaluer l’efficacité de l’amiloride (bloqueur non spécifique des canaux ASIC-1) dans la prophylaxie de l’aura migraineuse |  | 
| E.2.2 | Secondary objectives of the trial | 
| - Evaluate the efficacy of amiloride in the prophylaxis of migraine headache - Evaluate the efficacy of amiloride by measuring the functional impact in migraine with aura prophylaxis
 - Evaluate the efficacy of amiloride by measuring the emotional impact in migraine with aura prophylaxis
 - Evaluate the efficacy of amiloride by measuring state of health in migraine with aura prophylaxis
 - Evaluate the safety use of amiloride in migraine with aura prophylaxis
 |  
| - Evaluer l’efficacité de l’amiloride dans la prophylaxie de la céphalée migraineuse - Evaluer l’efficacité de l’amiloride par la mesure du retentissement fonctionnel dans la prophylaxie de la migraine avec aura
 - Evaluer l’efficacité de l’amiloride par la mesure du retentissement émotionnel dans la prophylaxie de la migraine avec aura
 - Evaluer l’efficacité de l’amiloride  par la mesure de l’état de santé dans la prophylaxie de la migraine avec aura
 - Evaluer la sécurité d’emploi de l’amiloride dans la prophylaxie de la migraine avec aura
 |  | 
| E.2.3 | Trial contains a sub-study | No | 
| E.3 | Principal inclusion criteria | 
| - Subjects aged 18 to 80 years - Male or female
 - Diagnosis of migraine with aura code 1.2.1 according to ICHD-3 including codes 1.2.1.1.1 and 1.2.1.2
 - At least 1 crisis with aura per month in the 3 months prior to inclusion
 - No prophylactic migraine background treatment for at least 1 month before inclusion
 - For women of childbearing age, use of a reliable contraceptive method at least 3 months before and 1 month after the study
 - Signing of written informed consent
 - Patient affiliated to social security
 |  
| - Sujets âgés de 18 à 80 ans - Homme ou femme
 - Diagnostic de migraine avec aura code 1.2.1 selon l’ICHD-3  incluant les codes 1.2.1.1 et 1.2.1.2
 - Au moins 1 crise avec aura par mois dans les 3 mois précédant l’inclusion
 - Absence de traitement de fond prophylactique antimigraineux depuis au moins 1 mois avant l’inclusion
 - Pour les femmes en âge de procréer, utilisation d’une méthode contraceptive fiable au moins 3 mois avant et 1 mois après l’étude
 - Signature du consentement éclairé écrit
 - Patient affilié à la sécurité sociale
 |  | 
| E.4 | Principal exclusion criteria | 
| - Existence of contraindications to taking amiloride: - Known hypersensitivity to the molecule
 - Hyperkalemia
 - Use of another hyperkalemic diuretic or potassium salts
 - Renal insufficiency (clearance < 60 ml/min)
 - Severe hepatocellular insufficiency
 - Patient, who from the investigator's point of view would not be compliant with the study procedure
 - Pregnant or breastfeeding patient
 - Patient under guardianship, protected by law
 |  
| - Existence de contre-indication à la prise d’amiloride : - Hypersensibilité connue à la molécule
 - Hyperkaliémie
 - Utilisation d’un autre diurétique hyperkaliémiant ou de sels de potassium
 - Insuffisance rénale (clairance < 60 ml/min)
 - Insuffisance hépato cellulaire sévère
 - Patient, qui d’un point de vue de l’investigateur ne serait pas compliant à la procédure de l’étude
 - Patiente enceinte ou allaitante
 - Patient sous tutelle, sous curatelle, protégé par la loi
 |  | 
| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| Number of aura in the last 4 weeks of each therapeutic period |  
| Nombre d’aura au cours des 4 dernières semaines de chaque période thérapeutique |  | 
| E.5.1.1 | Timepoint(s) of evaluation of this end point |  | 
| E.5.2 | Secondary end point(s) | 
| - Analysis of the number of days with headache, with or without aura. - Impact score on the HIT-6 scale
 - Anxiety and depression score on the HAD scale
 - EQ-5D Scale Score
 - Occurrence or absence of significant or unknown adverse events
 |  
| - Analyse du nombre de jours avec céphalée, avec ou sans aura. - Score d’impact sur l’échelle HIT-6
 - Score d’anxiété et de dépression sur l’échelle HAD
 - Score de l’échelle EQ-5D
 - Survenue ou absence d’effets indésirables notables ou non connus
 |  | 
| E.5.2.1 | Timepoint(s) of evaluation of this end point |  | 
| E.6 and E.7 Scope of the trial | 
| E.6 | Scope of the trial | 
| E.6.1 | Diagnosis | No | 
| E.6.2 | Prophylaxis | Yes | 
| E.6.3 | Therapy | No | 
| E.6.4 | Safety | No | 
| E.6.5 | Efficacy | No | 
| E.6.6 | Pharmacokinetic | No | 
| E.6.7 | Pharmacodynamic | No | 
| E.6.8 | Bioequivalence | No | 
| E.6.9 | Dose response | No | 
| E.6.10 | Pharmacogenetic | No | 
| E.6.11 | Pharmacogenomic | No | 
| E.6.12 | Pharmacoeconomic | No | 
| E.6.13 | Others | No | 
| E.7 | Trial type and phase | 
| E.7.1 | Human pharmacology (Phase I) | No | 
| E.7.1.1 | First administration to humans | No | 
| E.7.1.2 | Bioequivalence study | No | 
| E.7.1.3 | Other | No | 
| E.7.1.3.1 | Other trial type description |  | 
| E.7.2 | Therapeutic exploratory (Phase II) | Yes | 
| E.7.3 | Therapeutic confirmatory (Phase III) | No | 
| E.7.4 | Therapeutic use (Phase IV) | No | 
| E.8 Design of the trial | 
| E.8.1 | Controlled | Yes | 
| E.8.1.1 | Randomised | Yes | 
| E.8.1.2 | Open | No | 
| E.8.1.3 | Single blind | No | 
| E.8.1.4 | Double blind | Yes | 
| E.8.1.5 | Parallel group | No | 
| E.8.1.6 | Cross over | Yes | 
| E.8.1.7 | Other | No | 
| E.8.2 | Comparator of controlled trial | 
| E.8.2.1 | Other medicinal product(s) | No | 
| E.8.2.2 | Placebo | Yes | 
| E.8.2.3 | Other | No | 
| E.8.2.4 | Number of treatment arms in the trial | 2 | 
| E.8.3 | The trial involves single site in the Member State concerned | No | 
| E.8.4 | The trial involves multiple sites in the Member State concerned | Yes | 
| E.8.4.1 | Number of sites anticipated in Member State concerned | 3 | 
| E.8.5 | The trial involves multiple Member States | No | 
| E.8.6 Trial involving sites outside the EEA | 
| E.8.6.1 | Trial being conducted both within and outside the EEA | No | 
| E.8.6.2 | Trial being conducted completely outside of the EEA | No | 
| E.8.7 | Trial has a data monitoring committee | No | 
| E.8.8 | Definition of the end of the trial and justification where it is not the last
                        visit of the last subject undergoing the trial |  | 
| E.8.9 Initial estimate of the duration of the trial | 
| E.8.9.1 | In the Member State concerned years |  | 
| E.8.9.1 | In the Member State concerned months | 24 | 
| E.8.9.1 | In the Member State concerned days |  |