A Study to Test the Safety and Tolerability of Staccato Alprazolam in Study Participants 12 Years of Age and Older With Stereotypical Prolonged Seizures
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ClinicalTrials.gov Identifier: NCT05076617 |
Recruitment Status :
Enrolling by invitation
First Posted : October 13, 2021
Last Update Posted : May 26, 2023
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Condition or disease | Intervention/treatment | Phase |
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Stereotypical Prolonged Seizures | Drug: Staccato alprazolam | Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 300 participants |
Allocation: | N/A |
Intervention Model: | Single Group Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | An Open-Label, Multicenter, Outpatient Extension Study to Evaluate the Safety and Tolerability of Staccato Alprazolam in Study Participants 12 Years of Age and Older With Stereotypical Prolonged Seizures |
Actual Study Start Date : | February 3, 2022 |
Estimated Primary Completion Date : | May 22, 2026 |
Estimated Study Completion Date : | May 22, 2026 |

Arm | Intervention/treatment |
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Experimental: Staccato alprazolam
Participants will receive Staccato alprazolam by inhalation.
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Drug: Staccato alprazolam
Participants will receive Staccato alprazolam during the Treatment Period. Other Name: UCB7538 |
- Frequency of treatment-emergent adverse events (TEAEs) [ Time Frame: From Baseline up to the End of Study Visit (up to 48 months) ]An Adverse event (AE) is defined as any untoward medical occurrence, unintended disease or injury, or untoward clinical signs (including abnormal laboratory finding) in study participants, users, or other persons, whether or not related to the investigational medical product (IMP) and whether anticipated or unanticipated. A treatment-emergent adverse event (TEAE) is defined as any AE with a start date/time on or after the first IMP administration.
- Frequency of TEAEs leading to withdrawal from study [ Time Frame: From Baseline up to the End of Study Visit (up to 48 months) ]An Adverse event (AE) is defined as any untoward medical occurrence, unintended disease or injury, or untoward clinical signs (including abnormal laboratory finding) in study participants, users, or other persons, whether or not related to the investigational medical product (IMP) and whether anticipated or unanticipated. A treatment-emergent adverse event (TEAE) is defined as any AE with a start date/time on or after the first IMP administration.
- Frequency of serious TEAEs [ Time Frame: From Baseline up to the End of Study Visit (up to 48 months) ]
A serious adverse event (SAE) is any untoward medical occurrence that at any dose:
- Results in death
- Is life-threatening
- Requires inpatient hospitalisation or prolongation of existing hospitalisation
- Results in persistent or significant disability/incapacity, or
- Is a congenital anomaly/birth defect
- Other important medical events which based on medical or scientific judgement may jeopardize the patients, or may require medical or surgical intervention to prevent any of the above
- Treatment success after investigational medicinal product (IMP) administration for seizures occurring within the first 12 months [ Time Frame: From start of IMP treatment up to 12 months ]A responder after up to a maximum of 10 treated seizures will be defined as having a termination of seizure within 90 seconds after IMP dministration.
- Treatment success after IMP administration with no recurrence after 2 hours for seizures during the first 12 months [ Time Frame: From start of IMP treatment up to 12 months ]A responder after up to a maximum of 10 treated seizures will be defined as termination of seizure within 90 seconds after IMP administration and no recurrence of seizure(s) from IMP administration to 2 hours after IMP administration and no initiation of seizure rescue treatment from 90 seconds to 2 hours after IMP administration.
- Frequency of respiratory TEAEs [ Time Frame: From Baseline up to the End of Study Visit (up to 48 months) ]An Adverse event (AE) is defined as any untoward medical occurrence, unintended disease or injury, or untoward clinical signs (including abnormal laboratory finding) in study participants, users, or other persons, whether or not related to the investigational medical product (IMP) and whether anticipated or unanticipated. A treatment-emergent adverse event (TEAE) is defined as any AE with a start date/time on or after the first IMP administration.

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 12 Years and older (Child, Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion criteria:
- Participant must be ≥12 years of age at the time of signing informed consent
- Participant must have a study caregiver ≥18 years of age at the time of signing the informed consent; the study caregiver(s) must be able to recognize and observe the participant's seizures
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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:
- Generalized seizure episodes starting with a flurry of absence seizures or myoclonic seizures with a minimum total duration of 5 minutes
- Episodes of a focal seizure with a minimum duration of 3 minutes
- 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 completed a study using Staccato alprazolam (such as EP0162 (NCT05077904), ENGAGE-E-001 (NCT03478982), or UP0100 (NCT04857307))
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 investigational medicinal product (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 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). NOTE: Participants with mild asthma who qualify for inclusion in the are allowed to be enrolled even though they have known airway hypersensitivity
- 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 severe acute respiratory syndrome coronavirus 2 (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 a severe upper respiratory tract infection within 4 weeks or severe 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
- 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 or sedative hypnotics on a chronic basis
- Participant is taking nonselective beta blockers on a chronic basis

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05076617

Study Director: | UCB Cares | 001 844 599 2273 (UCB) |
Responsible Party: | UCB Biopharma SRL |
ClinicalTrials.gov Identifier: | NCT05076617 |
Other Study ID Numbers: |
EP0165 2021-002637-42 ( EudraCT Number ) |
First Posted: | October 13, 2021 Key Record Dates |
Last Update Posted: | May 26, 2023 |
Last Verified: | May 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Yes |
Plan Description: | Data from this trial may be requested by qualified researchers six months after product approval in the US and/or Europe, or global development is discontinued, and 18 months after trial completion. Investigators may request access to anonymized individual patient-level data and redacted trial documents which may include: analysis-ready datasets, study protocol, annotated case report form, statistical analysis plan, dataset specifications, and clinical study report. Prior to use of the data, proposals need to be approved by an independent review panel at www.Vivli.org and a signed data sharing agreement will need to be executed. All documents are available in English only, for a prespecified time, typically 12 months, on a password protected portal. This plan may change if the risk of reidentifying trial participants is determined to be too high after the trial is completed; in this case and to protect participants, individual patient-level data would not be made available. |
Supporting Materials: |
Study Protocol Statistical Analysis Plan (SAP) Clinical Study Report (CSR) |
Time Frame: | Data from this trial may be requested by qualified researchers six months after product approval in the US and/or Europe or global development is discontinued, and 18 months after trial completion. |
Access Criteria: | Qualified researchers may request access to anonymized IPD and redacted study documents which may include: raw datasets, analysis-ready datasets, study protocol, blank case report form, annotated case report form, statistical analysis plan, dataset specifications, and clinical study report. Prior to use of the data, proposals need to be approved by an independent review panel at www.Vivli.org and a signed data sharing agreement will need to be executed. All documents are available in English only, for a pre-specified time, typically 12 months, on a password protected portal. |
URL: | http://www.Vivli.org |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Product Manufactured in and Exported from the U.S.: | No |
Stereotypical prolonged seizures Phase 3 Staccato alprazolam |
Seizures Status Epilepticus Neurologic Manifestations Nervous System Diseases Alprazolam Hypnotics and Sedatives Central Nervous System Depressants Physiological Effects of Drugs |
Anti-Anxiety Agents Tranquilizing Agents Psychotropic Drugs GABA Modulators GABA Agents Neurotransmitter Agents Molecular Mechanisms of Pharmacological Action |