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ClinicalTrials.gov public records Last synced Oct 20, 2026, 8:55 PM EDT

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Showing 1–11 of 11 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: E5501 Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

A Open-label, Three-period, Partial-replicate Design Study to Evaluate the Inter- and Intrasubject Variability of the Avatrombopag To-be-marketed Formulation Administered as Single Doses of 40 mg to Healthy Subjects Receiving a Low-fat Meal

NCT01759394
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Avatrombopag maleate 40 mg
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Oct 31, 2013 · Synced Oct 20, 2026, 8:55 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Single-Center, Open-Label, Randomized, 3-Treatment Crossover Bioavailability Study of Single Oral Doses of E5501 Old Tablet Formulation Under Fasted Conditions and a New Tablet Formulation Under Fed and Fasted Conditions in Healthy Subjects

NCT01260155
View directory record Official record
Conditions
Healthy Subjects
Interventions
E5501
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
18 Years to 45 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Nov 1, 2013 · Synced Oct 20, 2026, 8:55 PM EDT
Completed Phase 2 Interventional Results available

Chronic Hepatitis C Virus Related Thrombocytopenia to Evaluate the Effects of E5501

NCT01355289
View directory record Official record
Conditions
Thrombocytopenia
Interventions
Avatrombopag, Placebo, Pegylated interferon (PEG-IFN), Telaprevir, Ribavirin
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
18 Years and older
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
2
States / cities
Los Angeles, California • Fairfax, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 22, 2018 · Synced Oct 20, 2026, 8:55 PM EDT
Completed Phase 2 Interventional Results available

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

NCT00441090
View directory record Official record
Conditions
Chronic Idiopathic Thrombocytopenic Purpura, Purpura, Thrombocytopenic, Idiopathic
Interventions
Placebo, Avatrombopag tablets
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
18 Years and older
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
25
States / cities
Anaheim, California • Bakersfield, California • Concord, California + 21 more
Source: ClinicalTrials.gov public record
Updated Mar 7, 2018 · Synced Oct 20, 2026, 8:55 PM EDT
Completed Phase 2 Interventional Results available

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
View directory record Official record
Conditions
Idiopathic Thrombocytopenic Purpura
Interventions
Blinded (placebo), Open Label (Avatrombopag tablets), Blinded (Avatrombopoag tablets)
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
18 Years and older
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
12
States / cities
Anaheim, California • Bakersfield, California • Manchester, Connecticut + 8 more
Source: ClinicalTrials.gov public record
Updated Mar 16, 2018 · Synced Oct 20, 2026, 8:55 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Assess Pharmacokinetic Drug-Drug Interaction Between Avatrombopag When Co-Administered With Fluconazole, Itraconazole, or Rifampin in Healthy Subjects

NCT02809768
View directory record Official record
Conditions
Healthy Participants
Interventions
Avatrombopag, Fluconazole, Itraconazole, Rifampin
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Mar 9, 2017 · Synced Oct 20, 2026, 8:55 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pharmacokinetic and Pharmacodynamic Study in Healthy Subjects Comparing the Interactions Between E5501 and Verapamil and Cyclosporine.

NCT01437384
View directory record Official record
Conditions
Idiopathic Thrombocytopenic Purpura (ITP)
Interventions
E5501
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2011
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated May 21, 2012 · Synced Oct 20, 2026, 8:55 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate the Relative Bioavailability and Intra-Subject Variability of Two Lots of E5501 40 mg Tablets Administered Twice as Single Oral Doses to Healthy Subjects

NCT01289509
View directory record Official record
Conditions
Idiopathic Thrombocytopenia Purpura
Interventions
E5501, Drug: E5501
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated Nov 1, 2013 · Synced Oct 20, 2026, 8:55 PM EDT
Completed Phase 2 Interventional Results available

Once-Daily Oral Avatrombopag Tablets Used in Subjects With Chronic Liver Diseases and Thrombocytopenia Prior to Elective Surgical or Diagnostic Procedures

NCT00914927
View directory record Official record
Conditions
Thrombocytopenia Related to Chronic Liver Disease
Interventions
Avatrombopag, Placebo
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
18 Years and older
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Jan 23, 2018 · Synced Oct 20, 2026, 8:55 PM EDT
Terminated Phase 3 Interventional Results available

A Phase 3, Multicenter, Randomized, Double-blind,Active-controlled, Parallel-group Trial With an Open-labelExtension Phase to Evaluate the Efficacy and Safety of OralE5501 Versus Eltrombopag, in Adults With Chronic ImmuneThrombocytopenia (Idiopathic Thrombocytopenic Purpura)

NCT01433978
View directory record Official record
Conditions
Idiopathic Thrombocytopenic Purpura
Interventions
Eltrombopag, Avatrombopag, Standard of care
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
18 Years to 99 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Watertown, South Dakota
Source: ClinicalTrials.gov public record
Updated Feb 6, 2018 · Synced Oct 20, 2026, 8:55 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Single and Multiple Dose Asian Bridging Study

NCT01251731
View directory record Official record
Conditions
Healthy Subjects
Interventions
E5501
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
20 Years to 45 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2010
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 6, 2012 · Synced Oct 20, 2026, 8:55 PM EDT