Eisai

287 total trials 5 currently recruiting 243 completed

Eisai sponsors 287 registered US clinical trials on ClinicalTrials.gov, 5 of them currently recruiting, and 243 completed. 67 of these trials are in Phase 3-4 (later-stage) and 214 in Phase 1-2 (earlier-stage). The most-studied condition in this pipeline is Healthy Subjects, with 6 trials.

Trial Pipeline

287 total, page 5 of 6

COMPLETED Phase 2

Dose-Tolerability Titration Study to Evaluate The Efficacy And Safety Of Perampanel (E2007) In Patients With Post-Herpetic Neuralgia (PHN)

NCT00592774

COMPLETED Phase 4

The Effectiveness And Safety Of Donepezil Hydrochloride (E2020) In Subjects With Mild To Severe Alzheimer's Disease Residing In An Assisted Living Facility

NCT00571064

COMPLETED Phase 2

Evaluating E2007 (Perampanel) in Patients With Painful Diabetic Neuropathy (PDN) or Post-Herpetic Neuralgia (PHN)

NCT00592904

COMPLETED Phase 3

BLOSSOM: Behavioral Modification and Lorcaserin Second Study for Obesity Management

NCT00603902

COMPLETED Phase 3

Open-Label Extension Study of 23 mg Donepezil SR in Participants With Moderate to Severe Alzheimer's Disease

NCT00566501

COMPLETED Phase 2

Exploratory Study, Evaluating the Treatment Effect of Surgery Plus GLIADEL® Wafer in Patients With Metastatic Brain Cancer

NCT00525590

COMPLETED Phase 3

BLOOM-DM: Behavioral Modification and Lorcaserin for Overweight and Obesity Management in Diabetes Mellitus

NCT00603291

COMPLETED Phase 2

Evaluating The Efficacy And Safety Of Donepezil Hydrochloride (HCl) (Aricept) In Treating Cognitive Dysfunction Exhibited By Children With Down Syndrome

NCT00570128

COMPLETED Phase 2

Safety and Tolerability of E5555 and Its Effects on Markers of Intravascular Inflammation in Subjects With Acute Coronary Syndrome

NCT00548587

TERMINATED Phase 2

Assessment of Perampanel (E2007) on Synaptic Dopamine in Mild-moderate PD Patients: A Pilot Study With [^123I]-IBZM SPECT

NCT00566462

COMPLETED Phase 2

A Phase II Study of the Safety and Efficacy of E7820 Plus Cetuximab in Colorectal Cancer, Preceded by a Run-in Study in Advanced Solid Tumors

NCT00309179

COMPLETED Phase 2

Safety and Tolerability of E5555 and Its Effects on Markers of Intravascular Inflammation in Subjects With Coronary Artery Disease

NCT00312052

COMPLETED Phase 2

Paired-Comparison Study Evaluating the Efficacy and Safety of E6201 Versus Vehicle for the Treatment of Plaque-Type Psoriasis

NCT00539929

COMPLETED Phase 4

Neural Correlates In Mild Alzheimer's Disease

NCT00477659

COMPLETED Phase 3

Comparison of 23 mg Donepezil Sustained Release (SR) to 10 mg Donepezil Immediate Release (IR) in Patients With Moderate to Severe Alzheimer's Disease

NCT00478205

COMPLETED Phase 2

An Evaluation of the Efficacy and Safety of E2007 in Patients With Painful Diabetic Neuropathy

NCT00505284

COMPLETED Phase 2

Phase 2, Parallel Group, Rollover Study of AKR-501 in Patients With ChronicITP Who Completed 28 Days of Study Treatment in Protocol 501-CL-003

NCT00625443

TERMINATED Phase 3

Open-Label Extension Study of Rufinamide Given as Adjunctive Therapy in Patients With Refractory Partial Seizures

NCT00448539

COMPLETED Phase 2

Study of AKR-501 Tablets Taken Orally Once Daily for 28 Days in Patients With Chronic Idiopathic Thrombocytopenic Purpura (ITP)

NCT00441090

TERMINATED Phase 2

A Study of E2007 In Patients With Parkinson's Disease

NCT00427011

COMPLETED Phase 3

E7389 Versus Treatment of Physician's Choice in Patients With Locally Recurrent or Metastatic Breast Cancer

NCT00388726

COMPLETED Phase 1

A Study of ZYC300 Administered With Cyclophosphamide Pre-Dosing

NCT00381173

COMPLETED Phase 3

BLOOM: Behavioral Modification and Lorcaserin for Overweight and Obesity Management

NCT00395135

COMPLETED Phase 1

A Dose-Finding Study of E7389 in Combination With Carboplatin in Patients With Solid Tumors

NCT00268905

COMPLETED Phase 2

4-Year Open-Label Extension Phase of the Parallel-Group Study of E2007 in Patients With Refractory Partial Seizures

NCT00368472

TERMINATED Phase 1

A Clinical Trial of Decitabine in Patients With Myelodysplastic Syndrome

NCT00282399

COMPLETED Phase 3

E7389 Versus Capecitabine in Patients With Locally Advanced or Metastatic Breast Cancer Previously Treated With Anthracyclines and Taxanes

NCT00337103

COMPLETED Phase 3

Efficacy, Safety, and Tolerability of E2007 in Levodopa Treated Parkinson's Disease Patients With Motor Fluctuations

NCT00368108

COMPLETED Phase 3

ACCESS: A Controlled Comparison of Eritoran Tetrasodium and Placebo in Patients With Severe Sepsis

NCT00334828

COMPLETED Phase 1

A Phase I Open Label Study of E7974 Administered on a Day 1 of 21-Day Cycle In Patients With Advanced Solid Tumors

NCT00165802

COMPLETED Phase 2

A Safety Study of AQUAVAN® (Fospropofol Disodium) Injection for Sedation During Minor Surgical Procedures.

NCT00327392

COMPLETED Phase 3

An Effectiveness and Safety Study of AQUAVAN® Injection (Fospropofol Disodium) for Sedation During Flexible Bronchoscopy

NCT00306722

COMPLETED

A Study to Investigate Use Patterns and Safety in Simulated Actual Over-the-counter (OTC) Use of Rabeprazole Sodium for the Treatment of Heartburn Symptoms

NCT01286194

COMPLETED Phase 3

An Effectiveness and Safety Study of AQUAVAN® Injection (Fospropofol Disodium) for Sedation During Colonoscopy

NCT00261599

COMPLETED Phase 2

Safety and Efficacy Study for the Prevention of Nausea and Vomiting in Multiple Myeloma Patients Receiving Stem Cell Transplantation.

NCT00306735

COMPLETED Phase 3

Rufinamide Given as Adjunctive Therapy in Participants With Refractory Partial Seizures

NCT00334958

COMPLETED Phase 4

A 28-Week Open Label Extension Study Evaluating Safety and Tolerability of Donepezil Hydrochloride in Subjects With Mild Cognitive Impairment

NCT00934375

COMPLETED Phase 2

Evaluating E7389 in Patients With Hormone Refractory Prostate Cancer With Advanced and/or Metastatic Disease Stratified by Prior Chemotherapy

NCT00278993

COMPLETED Phase 1

A Phase 1 Open-Label Study of E7974 Administered on Days 1 and 15 of a 28-Day Cycle in Patients With Solid Malignancies

NCT00130169

COMPLETED Phase 4

EARTH 413: A Study of Aricept in Hispanic Patients With Mild to Moderate Alzheimer's Disease (AD)

NCT00230568

COMPLETED Phase 3

Trial of Decitabine in Patients With Acute Myeloid Leukemia

NCT00260832

COMPLETED Phase 3

E3810-A001-313: Efficacy and Safety of 10 mg Rabeprazole for Treating Heartburn in Frequent Sufferers

NCT00236184

COMPLETED Phase 3

E3810-A001-312: Efficacy and Safety of 10 mg Rabeprazole for Treating Heartburn in Frequent Sufferers

NCT00236197

COMPLETED Phase 2

A Phase II Study of E7389 in Patients With Breast Cancer, Previously Treated With Anthracycline, Taxane and Capecitabine

NCT00246090

COMPLETED Phase 2

A Study to Explore the Safety And Tolerability of Doses of E2007 Up to a Maximum of 8 mg In Patients With Parkinson's Disease Who Experience End-of-Dose Wearing Off Motor Fluctuations

NCT00165789

COMPLETED Phase 2

Treatment of Gastroesophageal Reflux Disease in 12-16 Year Old Patients With Rabeprazole

NCT00132496

COMPLETED Phase 2

A Study of Amolimogene (ZYC101a) in Patients With High Grade Cervical Intraepithelial Lesions of the Uterine Cervix

NCT00264732

COMPLETED Phase 1

A Phase I/Ib, Multicenter, Open-Label, Dose Escalation Study of E7080 in Patients With Solid Tumors and in Combination With Temozolomide in Patients With Advanced and/or Metastatic Melanoma

NCT00121680

COMPLETED Phase 2

GPI 15715 For Sedation in the Intensive Care Unit (ICU) Setting

NCT00125398

COMPLETED Phase 2

Study of AQUAVAN® Injection (AQUAVAN; Fospropofol Disodium) for Sedation During Colonoscopy

NCT00125424

← Previous Page 5 of 6 Next →

Phase Distribution

PhaseTrial count
Phase 1 122
Phase 2 92
Phase 3 52
Phase 4 15

What the Pipeline for Eisai Shows

According to the ClinicalTrials.gov registry, Eisai is linked to 287 US clinical trials across every stage of research activity. Of those, 5 studies are currently recruiting, about 2% of the sponsor's indexed portfolio, and 243 are already marked complete, representing roughly 85% of the total.

The phase mix for Eisai reports 67 late-stage studies (Phase 3 and Phase 4 combined) and 214 earlier-phase studies (Phase 1 and Phase 2).

The top therapeutic focus area indexed for Eisai is Healthy Subjects with 6 linked trials, and 9 other condition areas appear in the top list above.

How to read these pipeline numbers

Recruiting share is one of the more practical signals here: it reflects how much of a sponsor's research is presently open to new participants, while the completed share indicates the depth of finished work that has already contributed registry results. Both counts come directly from the public ClinicalTrials.gov dataset and are refreshed on the registry side; this page mirrors the latest data pull without altering it.

A portfolio weighted toward Phase 3 usually reflects an organization advancing candidates toward regulatory review, where the research centers on comparative efficacy and broader safety across larger populations. A heavier Phase 1 and Phase 2 tilt generally indicates exploratory work, safety, dosing, and early signal detection, and is common among research-forward sponsors that seed many early programs. Phase 4 entries, when present, track interventions already in real-world use and typically focus on long-term safety, effectiveness across subgroups, or formulation comparisons.

That distribution is a quick read of where the organization concentrates its research attention; it does not imply product availability, market share, or any clinical endorsement. All numbers on this page come from ClinicalTrials.gov maintained by the National Library of Medicine, and counts can shift as new studies are registered or existing ones update their status. This information is provided for reference and educational purposes only, not as medical, investment, or regulatory advice, verify current details directly with ClinicalTrials.gov before relying on any figure here.

Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainTrial

Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This page aggregates every registered trial from this sponsor, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.