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Showing 1–12 of 12 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Avatrombopag tablets Clear all
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 Oct 31, 2013 · Synced Sep 6, 2026, 5:09 PM EDT
Completed Phase 2 Interventional

Avatrombopag vs. Placebo for CIT in GI Malignancies

NCT05772546
View directory record Official record
Conditions
Gastrointestinal Cancer, Gastrointestinal Neoplasms, Chemotherapy-Induced Thrombocytopenia
Interventions
Avatrombopag, Matching Placebo
Drug
Lead sponsor
Hanny Al-Samkari, MD
Other
Eligibility
18 Years and older
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
4
States / cities
Miami, Florida • Boston, Massachusetts • Portland, Oregon + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 30, 2026 · Synced Sep 6, 2026, 5:09 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 22, 2018 · Synced Sep 6, 2026, 5:09 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 15, 2018 · Synced Sep 6, 2026, 5:09 PM EDT
Completed Phase 4 Interventional Results available

Safety and Treatment Satisfaction in Adults With Chronic ITP After Switching to Avatrombopag From Eltrombopag or Romiplostim

NCT04638829
View directory record Official record
Conditions
Immune Thrombocytopenia
Interventions
Avatrombopag Oral Tablet
Drug
Lead sponsor
Sobi, Inc.
Industry
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
20
States / cities
Tucson, Arizona • Whittier, California • Washington D.C., District of Columbia + 17 more
Source: ClinicalTrials.gov public record
Updated Jan 15, 2025 · Synced Sep 6, 2026, 5:09 PM EDT
Completed Phase 3 Interventional Results available

Treatment of Thrombocytopenia in Patients With Chronic Liver DiseaseUndergoing an Elective Procedure

NCT01972529
View directory record Official record
Conditions
Thrombocytopenia Associated With Liver Disease
Interventions
avatrombopag (lower baseline platelet count), placebo (lower baseline platelet count), avatrombopag (higher baseline platelet count), placebo (higher baseline platelet count)
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
18 Years and older
Enrollment
231 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
21
States / cities
Lancaster, California • Long Beach, California • Los Angeles, California + 18 more
Source: ClinicalTrials.gov public record
Updated Feb 26, 2018 · Synced Sep 6, 2026, 5:09 PM EDT
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 30, 2013 · Synced Sep 6, 2026, 5:09 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 6, 2018 · Synced Sep 6, 2026, 5:09 PM EDT
Completed Phase 3 Interventional Results available

Avatrombopag for the Treatment of Chemotherapy-Induced Thrombocytopenia in Adults With Active Non-Hematological Cancers

NCT03471078
View directory record Official record
Conditions
Chemotherapy-induced Thrombocytopenia
Interventions
Avatrombopag, Placebo Oral Tablet
Drug
Lead sponsor
Sobi, Inc.
Industry
Eligibility
18 Years and older
Enrollment
122 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
14
States / cities
Anaheim, California • Bakersfield, California • Riverside, California + 11 more
Source: ClinicalTrials.gov public record
Updated Sep 27, 2023 · Synced Sep 6, 2026, 5:09 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 Oct 31, 2013 · Synced Sep 6, 2026, 5:09 PM EDT
Completed Phase 3 Interventional Results available

Treatment of Thrombocytopenia in Patients With Chronic Liver Disease Undergoing an Elective Procedure

NCT01976104
View directory record Official record
Conditions
Thrombocytopenia Associated With Liver Disease
Interventions
avatrombopag (lower baseline platelet count), placebo (lower baseline platelet count), avatrombopag (higher baseline platelet count), placebo (higher baseline platelet count)
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
18 Years and older
Enrollment
204 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
23
States / cities
Birmingham, Alabama • Phoenix, Arizona • Little Rock, Arkansas + 20 more
Source: ClinicalTrials.gov public record
Updated Feb 26, 2018 · Synced Sep 6, 2026, 5:09 PM EDT
Completed Phase 3 Interventional Results available

Avatrombopag for the Treatment of Thrombocytopenia in Pediatric Subjects With Immune Thrombocytopenia for ≥6 Months

NCT04516967
View directory record Official record
Conditions
Immune Thrombocytopenia
Interventions
Avatrombopag, Placebo
Drug
Lead sponsor
Sobi, Inc.
Industry
Eligibility
1 Year to 17 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
21
States / cities
Phoenix, Arizona • Long Beach, California • Orange, California + 18 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Sep 6, 2026, 5:09 PM EDT