E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Treatment of stereotypical prolonged seizure |
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E.1.1.1 | Medical condition in easily understood language |
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E.1.1.2 | Therapeutic area | Diseases [C] - Nervous System Diseases [C10] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10076333 |
E.1.2 | Term | Prolonged seizure |
E.1.2 | System Organ Class | 100000004852 |
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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 |
Comparison of the success of a single administration of Staccato alprazolam compared with placebo both in rapidly terminating a seizure episode within 90 seconds and with no recurrence of seizure(s) up to 2 hours after investigational medicinal product (IMP) administration. |
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E.2.2 | Secondary objectives of the trial |
- Comparison of the success of a single administration of Staccato alprazolam compared with placebo both in rapidly terminating a seizure episode within 90 seconds and with no recurrence of seizure(s) up to 4 hours after IMP administration - Comparison of the success of a single administration of Staccato alprazolam compared with placebo both in rapidly terminating a seizure episode within 90 seconds and with no recurrence of seizure(s) up to 6 hours after IMP administration - Comparison of the time from IMP administration to cessation of the treated seizure between Staccato alprazolam and placebo - Evaluate the pulmonary safety of a single dose of Staccato alprazolam compared with placebo - Comparison of the occurrence of subsequent seizure(s) up to 2 hours after IMP administration between Staccato alprazolam and placebo |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
- Participant must be ≥12 years of age at the Baseline/Randomization Visit - Participant must have a study caregiver ≥18 years of age at the Screening Visit; the study caregiver(s) must be a relative, partner, friend, or legally authorized representative (LAR) of the participant, or a person who provides daily care to the participant and has a significant personal relationship with the participant; the study caregiver(s) must be able to recognize and observe the participant’s seizures - Participants with an established diagnosis of focal or generalized epilepsy or combined focal and generalized epilepsy with a documented history of stereotypical episodes of prolonged seizures that includes at least 1 of the following: a) Generalized seizure episodes starting with a flurry of absence seizures or myoclonic seizures with a minimum total duration of 5 minutes b) Episodes of a focal seizure with a minimum duration of 3 minutes c) Episodes of a focal seizure or a flurry of myoclonic seizures for at least 90 seconds followed by a generalized/bilateral tonic-clonic seizure with a minimum total duration of 3 minutes - Prior to the Screening Visit, participant has experienced ≥4 stereotypical episodes of prolonged seizures in the past 6 months, and the last 2 stereotypical episodes of prolonged seizures must have occurred within the 3 months prior to the Screening Visit - Participant has had a documented brain computerized tomography or magnetic resonance imaging review, performed after diagnosis of epilepsy and within the 5 years prior to the Screening Visit, that confirms the absence of a progressive neurological disorder - Participant is receiving a regimen of antiseizure medications (ASMs) that has been stable (ie, no addition or removal of ASM[s]; dose adjustments are permitted to ASM[s]; dose adjustments are not permitted for benzodiazepines) for 30 days prior to the Screening Visit - Male and female participants: a) A male participant must agree to use contraception during the Outpatient Treatment Period and for at least 7 days after investigational medicinal product (IMP) administration and refrain from donating sperm during this period b) A female participant is eligible to participate if she is not pregnant, not breastfeeding, and at least 1 of the following conditions applies: i) Not a woman of childbearing potential (WOCBP) OR ii) A WOCBP who agrees to follow the contraceptive guidance during the Outpatient Treatment Period and for at least 30 days after IMP administration - Participant is capable of giving signed informed consent (or giving assent, where required), which includes compliance with the requirements and restrictions listed in the informed consent form (ICF), the protocol, and the individualized participant management plan (iPMP). The informed consent form (ICF), or a specific assent form, where required, will be signed and dated by minors - The participant’s study caregiver(s) must be capable of giving signed informed consent), which includes compliance with the requirements and restrictions listed in the ICF, the protocol, and the individualized participant management plan (iPMP) |
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E.4 | Principal exclusion criteria |
- Participant has a current history of alcohol or drug use disorder, as defined in the Diagnostic and Statistical Manual of Mental Disorders 5, within the previous 1 year - Participant has a known hypersensitivity to any components of the IMP or comparable drugs (and/or an investigational device) as stated in this protocol or to albuterol (or similar bronchospasm rescue medication if needed to meet country-specific requirements) - Participant has a diagnosis of atrial fibrillation or mitral stenosis - Participant has a history of convulsive (generalized tonic-clonic) status epilepticus in the 8 weeks prior to the Screening Visit - Participant has a history or presence of known nonepileptic seizures which cannot be distinguished from qualifying epileptic seizures - Participant has a clinically significant known airway hypersensitivity (eg, bronchospasm to known allergens, such as pollen, animals, or food) and/or acute respiratory signs/symptoms (eg, shortness of breath, wheezing on lung auscultation) - Participant has a clinically significant chronic pulmonary disorder other than mild asthma (eg, chronic obstructive pulmonary disease, restrictive lung diseases [including idiopathic pulmonary fibrosis]) and/or recent history or presence of hemoptysis or pneumothorax - Participant has had a positive antigen test for SARS-CoV-2 and experienced moderate to severe signs/symptoms of respiratory distress necessitating hospitalization or outpatient treatment such as ambulatory oxygen, extensive treatment with inhaler medications, and/or oral medications for a duration of 4 weeks or more, unless full resolution occurred at least 6 months prior to Screening - Participant has experienced an upper respiratory tract infection within 4 weeks or bronchitis/pneumonia within 3 months before the Screening Visit - Participant has a history or presence of acute narrow-angle glaucoma - Participant has a condition for which oral alprazolam is contraindicated (eg, myasthenia gravis, severe respiratory insufficiency, and sleep apnea syndrome) - Participant has a history or presence of long QT syndrome, a family history of sudden death due to long QT syndrome, or unexplained syncope - Chronic use of benzodiazepines for more than 3 days within a period of 7 days will be allowed for approximately 30 % of study participants - Participant is taking any drug that is a strong CYP3A4 inhibitor, including azole antifungal agents (ketoconazole and itraconazole) and nefazodone - Participant is taking any opioids(eg, fentanyl, oxycodone, morphine) or sedative hypnotics on a chronic basis - Participant is taking nonselective beta blockers on a chronic basis - Participant is taking pharmacotherapy for an active major psychiatric disorder where major changes in regimen are needed or anticipated during the study - Participant has been treated with vagal nerve stimulation (VNS) for less than 6 months or VNS settings have changed within 30 days before the Screening Visit - Participant has a clinically significant laboratory abnormality that may increase the risk associated with study participation or may interfere with the interpretation of study results, according to the judgment of the Investigator - Participant has an oxygen saturation <95 % (or less than normal in regions of altitude >2500 meters) for greater than 30 seconds during the Screening Visit. In case of an out-of-range result, 1 repeat will be allowed. If the readings are out of range again, the study participant will be excluded - Participant has >2.0x upper limit of normal (ULN) of any of the following: alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), or >1.0xULN total bilirubin (≥1.5xULN total bilirubin if known Gilbert’s syndrome or >2.0xULN total bilirubin for liver impairment) - Participant has current unstable liver or biliary disease per Investigator assessment defined by the presence of ascites, encephalopathy, coagulopathy, hypoalbuminemia, esophageal or gastric varices, persistent jaundice, or cirrhosis - Participant has a QT interval corrected for heart rate (QTc) >450 msec (males), QTc interval >470 msec (females), or QTc interval >480 msec (participants with bundle branch block), PR interval ≥220msec, or any other clinically significant electrocardiogram (ECG) abnormality according to the Investigator i) The QTc is the QT interval corrected for heart rate according to Fridericia’s formula (QTcF). It is either machine-read or manually over-read - Participant has a positive urine screen for drugs of abuse at the Screening Visit - Participant has a blood pressure (BP) or heart rate (HR) outside the following range after 5 minutes rest: systolic BP: 90 mmHg to 150 mmHg; diastolicBP: 4 0mmHg to 95 mmHg; HR: 50 bpm to 100 bpm. In case of an out-of-range result, 1 repeat will be allowed. If the readings are out of range again, the study participant will be excluded
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E.5 End points |
E.5.1 | Primary end point(s) |
Treatment success for the treated seizure with no recurrence after 2 hours |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
From start of IMP treatment through 2 hours |
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E.5.2 | Secondary end point(s) |
1. Treatment success for treated seizure with no recurrence after 4 hours 2. Treatment success for treated seizure with no recurrence after 6 hours 3. Time from IMP administration to cessation of the treated seizure 4. Frequency of respiratory treatment emergent adverse events (TEAEs) 5. Number of subsequent seizure(s) up to 2 hours after IMP administration 6. Time to first subsequent seizure up to 2 hours after IMP administration |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
1: From start of IMP treatment through 4 hours 2&3: From start of IMP treatment through 6 hours 4: From start of IMP treatment up to the Safety Follow-up Visit (Week 19) 5&6: From start of IMP treatment through 2 hours |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
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 | Yes |
E.6.13.1 | Other scope of the trial description |
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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) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
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 | Yes |
E.8.1.6 | Cross over | No |
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 | 5 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 43 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Australia |
China |
Japan |
United States |
France |
Poland |
Bulgaria |
Spain |
Czechia |
Germany |
Italy |
Hungary |
Ukraine |
United Kingdom |
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E.8.7 | Trial has a data monitoring committee | Yes |
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
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 1 |
E.8.9.1 | In the Member State concerned months | 5 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 1 |
E.8.9.2 | In all countries concerned by the trial months | 7 |
E.8.9.2 | In all countries concerned by the trial days | 21 |