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Seizures clinical trials

The registry lists 766 studies for Seizures across more than 10 countries. 136 are recruiting or about to start. 262 of them are mainly about Seizures (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-09. Counting its 3 narrower conditions too, such as Status Epilepticus: 898 studies, 168 open.

ClinicalTrials.gov finds 1,472 studies for Seizures. How that becomes 766 here

This page counts the studies the registry files under Seizures, and those it files under no condition that list Seizuresthemselves. Each study its search finds is placed by how the registry filed it and by the conditions it lists. ClinicalTrials.gov counts as of Nov 8, 2026. How condition pages count

  1. 1,472Found by its condition searchIt reads the conditions a study lists and their synonyms, and also titles and keywords.
  2. −126Filed under a narrower condition, counted on its own pageStatus Epilepticus 91 · Seizures, Febrile 20 · Psychogenic Nonepileptic Seizures 13
  3. −93List Seizures as a condition, but the registry did not file them under itMost often written as “Epilepsy; Seizure” (17), “Seizure Disorder” (10), and “Neonatal Seizure” (8). The registry filed 2 of them under no condition at all, and the others under other conditions only, most often Epilepsy (65) and Epilepsies, Partial (8).
  4. −487Match it another way305 name it in the title, 62 in a keyword, and 120 by a synonym or other text the search reads.
  5. 766The count on this page52 of them list Seizures in their own words; the registry filed them under no condition.

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Status

Completed
441
Recruiting
94
Terminated
75
Status unknown
58
Not yet recruiting
30
Withdrawn
27

Phase

Phase 3
171
Phase 2
125
Phase 4
66
Phase 1
44
Early Phase 1
7

Where

United States
395
France
80
Spain
70
Germany
68
Italy
63
United Kingdom
62

Who runs them

National Institute of Neurological Disorders and Stroke (NINDS) (32) · Eisai Inc. (21) · Johnson & Johnson Pharmaceutical Research & Development, L.L.C. (19) · SK Life Science, Inc. (15) · UCB Pharma (14) · GlaxoSmithKline (14) · Assiut University (12) · Pfizer's Upjohn has merged with Mylan to form Viatris Inc. (12)

What is being tested here

Drugs under test in Seizures studies, those with the most open studies first. Medicines only given beside them are not counted. How drugs are counted

DrugOpenPhase 3All
Levetiracetam71948
RAP-219324
SPN-817303
Cannabidiol2512
Tranexamic Acid224
XEN1101233
Methylphenidate203
Clemizole hydrochloride222
Perampanel1417
Carisbamate199

Drug classes tested here Stimulants 2 open · Serotonin receptor agonists 1 open · Anxiolytics 16 · SSRIs 8

Coming up

28phase 3 studies under way
56studies finish main data collection within a year11 of them phase 3

Studies recruiting or running, from their records. “Main data collection” ends at the primary completion date, the sponsor’s own estimate, which often moves.

The 10 nearest, phase 3 first

Who these studies take

Of the 94 Seizures studies recruiting now, 36 (38%) set no upper age limit and 45 (48%) stop at 75 or younger. 39 (41%) take children under 18. 0 (0%) are for women only and 0 (0%) for men only; 18 (19%) take healthy volunteers.

Recruiting studies that take each age, of 94
AgeWomenMen
1027 (29%)27 (29%)
1879 (84%)79 (84%)
3075 (80%)75 (80%)
4076 (81%)76 (81%)
5076 (81%)76 (81%)
6569 (73%)69 (73%)
7558 (62%)58 (62%)
8547 (50%)47 (50%)

Across all 766 studies, recruiting or not: 51% stop at 75 or younger and 41% at 65; 53% take children; 2% are for women only and 1% for men only; 10% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Seizures studies take

Of 51 phase 3 interventional studies under Seizures, half reached primary completion within 54 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Phase 136 mo26–56 · 16 studies——
Phase 240 mo20–58 · 35 studies——
Phase 354 mo33–79 · 51 studies54 mo33–79 · 43 studies—
Phase 428 mo20–42 · 26 studies——
Interventional, no phase32 mo22–51 · 83 studies—33 mo22–53 · 74 studies
Observational38 mo18–96 · 80 studies29 mo18–39 · 27 studies70 mo18–… · 53 studies

Each figure is the month by which half the studies had reached primary completion, with the range in which the middle half did. Studies still running count until their last registry update; studies that stopped early are left out. Phase 1 includes early phase 1; observational means prospective or not stated, as retrospective and cross-sectional studies date a window of data rather than a study. How these figures are worked out

What changed recently

From the registry's own updates since Oct 11, 2026.

Started recruiting2

Results posted1

Stopped1

Newly registered1

Studies

Recruiting first, then most recently updated. Showing 50 of 766. Browse all 766 → or search them.