New inhaler aims to halt seizures in seconds
NCT ID NCT05077904
First seen Jun 27, 2026 · Last updated Sep 11, 2026 · Updated 7 times
Summary
This Phase 3 trial tests a single inhaled dose of alprazolam (a fast-acting sedative) to stop prolonged seizures in people aged 12 and older. The goal is to see if it can end a seizure within 90 seconds and prevent it from coming back for at least 2 hours. About 350 participants will receive either the drug or a placebo inhaler.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- alprazolam (inhaled)
- What this could lead to
- If it works, this could provide a fast-acting, easy-to-use treatment to stop prolonged seizures at home, reducing emergency visits.
- What could go wrong
- This is still experimental. The trial is testing a single dose, and it may not work better than placebo. Side effects or lack of long-term data are also unknowns.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 3
Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.
- Participants
-
About 350 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Dec 2021
- Expected to finish
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Sep 2026
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
12 years and older
- Sex
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Anyone
- Healthy volunteers
-
Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
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: 1. Generalized seizure episodes starting with a flurry of absence seizures or myoclonic seizures with a minimum total duration of 5 minutes 2. Episodes of a focal seizure with a minimum duration of 3 minutes 3. 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: 1. A male participant must agree to use contraception during the Outpatient Treatment Period and for at least 7 days after IMP administration and refrain from donating sperm during this period 2. 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 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 iPMP 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 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 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 ≥220 msec, 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; diastolic BP: 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
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for Epilepsy are added.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
126 sites in 13 countries. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Ep0162 20022
RECRUITINGHangzhou, China
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Ep0162 20025
RECRUITINGWenzhou, China
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Ep0162 20070
RECRUITINGHachioji-shi, Japan
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Ep0162 20119
RECRUITINGSuzhou, China
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Ep0162 20123
WITHDRAWNShanghai, China
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Ep0162 20124
RECRUITINGGuangzhou, China
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Ep0162 20128
WITHDRAWNBeijing, China
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Ep0162 20133
RECRUITINGChengdu, China
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Ep0162 20137
RECRUITINGChengdu, China
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Ep0162 20143
RECRUITINGKodaira, Japan
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Ep0162 20147
RECRUITINGKyoto, Japan
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Ep0162 20179
RECRUITINGFuzhou, China
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Ep0162 20235
RECRUITINGNagoya, Japan
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Ep0162 20236
RECRUITINGHōfu, Japan
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Ep0162 20237
WITHDRAWNHamamatsu, Japan
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Ep0162 20238
RECRUITINGNiigata, Japan
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Ep0162 20239
RECRUITINGItami, Japan
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Ep0162 20240
RECRUITINGShizuoka, Japan
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Ep0162 20241
RECRUITINGŌmura, Japan
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Ep0162 20242
RECRUITINGSuita, Japan
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Ep0162 20243
COMPLETEDNagakute, Japan
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Ep0162 20244
RECRUITINGYamagata, Japan
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Ep0162 20246
RECRUITINGBeijing, China
-
Ep0162 20248
RECRUITINGFukuoka, Japan
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Ep0162 20249
RECRUITINGHiroshima, Japan
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Ep0162 20250
WITHDRAWNChongqing, China
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Ep0162 20251
RECRUITINGZhengzhou, China
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Ep0162 20252
WITHDRAWNWuhan, China
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Ep0162 20253
WITHDRAWNNanchang, China
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Ep0162 20255
WITHDRAWNYinchuan, China
-
Ep0162 20257
RECRUITINGTianjin, China
-
Ep0162 20258
RECRUITINGLanzhou, China
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Ep0162 20260
COMPLETEDGuangzhou, China
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Ep0162 20261
RECRUITINGChangchun, China
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Ep0162 20262
RECRUITINGZhanjiang, China
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Ep0162 20264
COMPLETEDGuangzhou, China
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Ep0162 20266
RECRUITINGTōon, Japan
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Ep0162 20267
RECRUITINGNanjing, China
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Ep0162 20268
COMPLETEDBeijing, China
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Ep0162 20269
RECRUITINGGuangzhou, China
-
Ep0162 20289
RECRUITINGShijiazhuang, China
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Ep0162 20292
RECRUITINGShanghai, China
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Ep0162 20297
RECRUITINGShinjuku-ku, Japan
-
Ep0162 20299
RECRUITINGBeijing, China
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Ep0162 20300
RECRUITINGGuangzhou, China
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Ep0162 20302
RECRUITINGOsaka, Japan
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Ep0162 20315
RECRUITINGKoshi-shi, Japan
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Ep0162 20316
RECRUITINGSapporo, Japan
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Ep0162 20320
RECRUITINGKunming, China
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Ep0162 20331
RECRUITINGNanning, China
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Ep0162 20332
WITHDRAWNShenzhen, China
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Ep0162 20333
RECRUITINGQingdao, China
-
Ep0162 20334
RECRUITINGChongqing, China
-
Ep0162 20337
RECRUITINGShimotsuga-gun, Japan
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Ep0162 30016
RECRUITINGFitzroy, Australia
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Ep0162 30027
WITHDRAWNMelbourne, Australia
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Ep0162 30030
RECRUITINGHerston, Australia
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Ep0162 30031
ACTIVE_NOT_RECRUITINGSouth Brisbane, Australia
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Ep0162 40019
WITHDRAWNParis, France
-
Ep0162 40023
RECRUITINGErlangen, Germany
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Ep0162 40063
COMPLETEDPrague, Czechia
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Ep0162 40091
RECRUITINGNowa Sól, Poland
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Ep0162 40108
RECRUITINGSalford, United Kingdom
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Ep0162 40130
WITHDRAWNMarseille, France
-
Ep0162 40144
RECRUITINGMilan, Italy
-
Ep0162 40153
WITHDRAWNPoznan, Poland
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Ep0162 40157
RECRUITINGL'Hospitalet de Llobregat, Spain
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Ep0162 40160
RECRUITINGBarcelona, Spain
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Ep0162 40163
RECRUITINGOxford, United Kingdom
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Ep0162 40199
RECRUITINGStrasbourg, France
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Ep0162 40201
RECRUITINGRennes, France
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Ep0162 40219
WITHDRAWNKrakow, Poland
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Ep0162 40230
RECRUITINGValencia, Spain
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Ep0162 40257
RECRUITINGRoma, Italy
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Ep0162 40300
WITHDRAWNCardiff, United Kingdom
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Ep0162 40352
RECRUITINGPamplona, Spain
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Ep0162 40453
RECRUITINGTerrassa, Spain
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Ep0162 40477
RECRUITINGPavia, Italy
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Ep0162 40502
COMPLETEDKrakow, Poland
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Ep0162 40529
RECRUITINGMarburg, Germany
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Ep0162 40540
RECRUITINGMadrid, Spain
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Ep0162 40577
WITHDRAWNAachen, Germany
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Ep0162 40645
RECRUITINGFrankfurt am Main, Germany
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Ep0162 40650
RECRUITINGBlagoevgrad, Bulgaria
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Ep0162 40651
COMPLETEDSofia, Bulgaria
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Ep0162 40653
RECRUITINGDebrecen, Hungary
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Ep0162 40665
COMPLETEDPleven, Bulgaria
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Ep0162 40666
RECRUITINGBalassagyarmat, Hungary
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Ep0162 40667
COMPLETEDValladolid, Spain
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Ep0162 40668
RECRUITINGSeville, Spain
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Ep0162 40670
RECRUITINGBrno, Czechia
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Ep0162 40671
RECRUITINGPrague, Czechia
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Ep0162 40672
RECRUITINGOstrava - Poruba, Czechia
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Ep0162 40673
RECRUITINGBudapest, Hungary
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Ep0162 40674
RECRUITINGGenova, Italy
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Ep0162 40675
RECRUITINGRoma, Italy
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Ep0162 40676
COMPLETEDLublin, Poland
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Ep0162 40677
RECRUITINGGdansk, Poland
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Ep0162 40678
COMPLETEDŚwidnik, Poland
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Ep0162 40680
WITHDRAWNDijon, France
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Ep0162 40681
RECRUITINGBron, France
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Ep0162 40682
RECRUITINGParis, France
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Ep0162 40683
RECRUITINGBerlin, Germany
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Ep0162 40685
RECRUITINGBielefeld, Germany
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Ep0162 40686
RECRUITINGBirmingham, United Kingdom
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Ep0162 40688
WITHDRAWNBron, France
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Ep0162 40689
COMPLETEDKehl-kork, Germany
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Ep0162 40690
WITHDRAWNCatanzaro, Italy
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Ep0162 40704
RECRUITINGBudapest, Hungary
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Ep0162 40707
RECRUITINGBydgoszcz, Poland
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Ep0162 40708
RECRUITINGPazardzhik, Bulgaria
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Ep0162 40709
COMPLETEDPleven, Bulgaria
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Ep0162 40714
RECRUITINGPrague, Czechia
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Ep0162 40724
WITHDRAWNMünchen, Germany
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Ep0162 40735
RECRUITINGGlasgow, United Kingdom
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Ep0162 40833
RECRUITINGLondon, United Kingdom
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Ep0162 40842
RECRUITINGKrakow, Poland
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Ep0162 50034
RECRUITINGRochester, New York, 14642, United States
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Ep0162 50047
COMPLETEDBoston, Massachusetts, 02215, United States
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Ep0162 50088
RECRUITINGWashington D.C., District of Columbia, 20037, United States
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Ep0162 50089
RECRUITINGPhiladelphia, Pennsylvania, 19140, United States
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Ep0162 50093
WITHDRAWNBaltimore, Maryland, 21287, United States
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Ep0162 50096
RECRUITINGPhiladelphia, Pennsylvania, 19104, United States
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Ep0162 50103
RECRUITINGNashville, Tennessee, 37232, United States
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Ep0162 50110
COMPLETEDAnn Arbor, Michigan, 48109, United States
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Ep0162 50118
RECRUITINGDowney, California, 90242, United States
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Ep0162 50199
RECRUITINGMiami, Florida, 33136, United States
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Ep0162 50298
RECRUITINGNew York, New York, 10016, United States
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Ep0162 50299
RECRUITINGNew Brunswick, New Jersey, 08901, United States
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Ep0162 50308
RECRUITINGTampa, Florida, 33606, United States
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Ep0162 50323
RECRUITINGHonolulu, Hawaii, 96817, United States
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Ep0162 50342
RECRUITINGJacksonville, Florida, 32224-1865, United States
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Ep0162 50364
RECRUITINGPhiladelphia, Pennsylvania, 19107, United States
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Ep0162 50367
COMPLETEDNew Haven, Connecticut, 06519, United States
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Ep0162 50371
WITHDRAWNAkron, Ohio, 44308, United States
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Ep0162 50375
WITHDRAWNSpringfield, Illinois, 62702, United States
-
Ep0162 50395
WITHDRAWNNew Orleans, Louisiana, 70121, United States
-
Ep0162 50416
RECRUITINGLa Jolla, California, 92037, United States
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Ep0162 50473
RECRUITINGSalt Lake City, Utah, 84132, United States
-
Ep0162 50487
WITHDRAWNCharlotte, North Carolina, 28207, United States
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Ep0162 50488
WITHDRAWNBethesda, Maryland, 20817, United States
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Ep0162 50490
RECRUITINGNew York, New York, 10029, United States
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Ep0162 50491
RECRUITINGPittsburgh, Pennsylvania, 15213, United States
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Ep0162 50492
COMPLETEDOrange, California, 92868, United States
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Ep0162 50493
RECRUITINGChicago, Illinois, 60611, United States
-
Ep0162 50494
COMPLETEDLittle Rock, Arkansas, 72205, United States
-
Ep0162 50496
WITHDRAWNRound Rock, Texas, 78681, United States
-
Ep0162 50497
RECRUITINGBuffalo, New York, 14221, United States
-
Ep0162 50499
WITHDRAWNLas Vegas, Nevada, 89128, United States
-
Ep0162 50504
RECRUITINGFort Wayne, Indiana, 46804, United States
-
Ep0162 50505
WITHDRAWNLos Angeles, California, 90095, United States
-
Ep0162 50506
RECRUITINGPhoenix, Arizona, 85004, United States
-
Ep0162 50507
RECRUITINGSt Louis, Missouri, 63110, United States
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Ep0162 50508
RECRUITINGJacksonville, Florida, 32209-6533, United States
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Ep0162 50509
COMPLETEDOrlando, Florida, 32806, United States
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Ep0162 50510
WITHDRAWNPortland, Oregon, 97239-3098, United States
-
Ep0162 50511
RECRUITINGPittsburgh, Pennsylvania, 15212, United States
-
Ep0162 50512
RECRUITINGBoise, Idaho, 83702, United States
-
Ep0162 50513
RECRUITINGMemphis, Tennessee, 38103-2800, United States
-
Ep0162 50514
RECRUITINGCharlotte, North Carolina, 28204, United States
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Ep0162 50515
COMPLETEDGulf Breeze, Florida, 32561, United States
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Ep0162 50517
RECRUITINGNew Orleans, Louisiana, 70122, United States
-
Ep0162 50518
RECRUITINGNew York, New York, 10075, United States
-
Ep0162 50525
RECRUITINGHouston, Texas, 77459, United States
-
Ep0162 50528
WITHDRAWNCleveland, Ohio, 44195, United States
-
Ep0162 50561
WITHDRAWNLexington, Kentucky, 40536, United States
-
Ep0162 50615
RECRUITINGBoston, Massachusetts, 02118, United States
-
Ep0162 50625
COMPLETEDNew Hyde Park, New York, 11042, United States
-
Ep0162 50626
WITHDRAWNNeptune City, New Jersey, 07753, United States
-
Ep0162 50676
RECRUITINGMiami, Florida, 33176, United States
-
Ep0162 50700
RECRUITINGChattanooga, Tennessee, 37403, United States
-
Ep0162 50701
RECRUITINGPortland, Oregon, 97239, United States
-
Ep0162 50702
RECRUITINGLong Beach, California, 90806, United States
-
Ep0162 50703
RECRUITINGRockledge, Florida, 32955, United States
-
Ep0162 50714
RECRUITINGHouston, Texas, 77030, United States
-
Ep0162 50715
RECRUITINGDurham, North Carolina, 27705, United States
-
Ep0162 50716
RECRUITINGSacramento, California, 95817, United States
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Ep0162 50720
RECRUITINGScottsdale, Arizona, 85253, United States
-
Ep0162 50721
WITHDRAWNBoca Raton, Florida, 33486, United States
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Ep0162 50722
WITHDRAWNPoway, California, 92064, United States
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Ep0162 50724
COMPLETEDPortland, Oregon, 97227, United States
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Ep0162 50726
RECRUITINGWinchester, Virginia, 22601, United States
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Ep0162 50731
RECRUITINGAustin, Texas, 78749, United States
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