Last Updated: May 26, 2026

CLINICAL TRIALS PROFILE FOR AVATROMBOPAG MALEATE


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All Clinical Trials for avatrombopag maleate

Trial ID Title Status Sponsor Phase Start Date Summary
NCT01355289 ↗ Chronic Hepatitis C Virus Related Thrombocytopenia to Evaluate the Effects of E5501 Completed Eisai Inc. Phase 2 2011-11-01 To evaluate the efficacy of E5501 by measuring platelet response in subjects with chronic hepatitis C virus (HCV)-related thrombocytopenia who require antiviral treatment.
NCT01433978 ↗ 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 Terminated Eisai Inc. Phase 3 2012-03-26 Core study: To compare the efficacy of avatrombopag (in addition to standard) of care to eltrombopag (in addition to standard of care) for the treatment of adult participants with chronic immune thrombocytopenia (idiopathic thrombocytopenic purpura [ITP]) as measured by durable platelet response. Open-label Extension Phase: To evaluate the safety and tolerability of long-term therapy with avatrombopag in participants with chronic ITP (cITP).
NCT01438840 ↗ Efficacy and Safety of Oral E5501 Plus Standard of Care for the Treatment of Thrombocytopenia in Adults With Chronic Immune Thrombocytopenia (Amendment 02) Completed Eisai Inc. Phase 3 2012-02-16 Core Study: To demonstrate that the efficacy of avatrombopag (in addition to standard of care) is superior to placebo (in addition to standard of care) for the treatment of adult participants with chronic immune thrombocytopenia (idiopathic thrombocytopenic purpura) (ITP) as measured by cumulative number of weeks of platelet response over 6 months of once daily treatment in adults participants who received at least 1 prior ITP therapy. Extension Phase: To evaluate the safety and tolerability of long-term therapy with avatrombopag in participants with chronic ITP (cITP).
NCT04915287 ↗ Efficacy of Avatrombopag in Thrombocytopenic Patients With Chronic Liver Disease Undergoing an Elective Procedure Recruiting Chinese PLA General Hospital Phase 4 2021-06-06 In this study, investigators aimed to evaluate the efficacy of Avatrombopag in thrombocytopenic patients with chronic liver disease undergoing an elective invasive procedure through a prospective, non-randomized controlled, multicenter clinical trial. The patients were non-randomly assigned to the Avatrombopag group (119 patients) and the conventional treatment group (357 patients). The primary endpoint was the proportion of patients not requiring prophylactic platelet transfusion or rescue therapy due to bleeding from grouping up to 10 days post-procedure. Second endpoints included the proportion of patients achieving a platelet count of ≥50x10^9/L and the mean change in platelet count from baseline at the time before the procedure, the proportion of patients requiring platelet transfusion and the mean platelet transfusion units per capita, the incidence of bleeding events (WHO≥2 and requiring rescue therapy), the imaging evaluations of bleeding events, the incidence of adverse events, the changes in life quality between two groups before and after treatment, and the pharmacoeconomic index of two groups.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for avatrombopag maleate

Condition Name

Condition Name for avatrombopag maleate
Intervention Trials
Thrombocytopenia; Drugs 1
Chronic Liver Disease 1
Chronic Thrombocytopenia 1
Idiopathic Thrombocytopenic Purpura 1
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Condition MeSH

Condition MeSH for avatrombopag maleate
Intervention Trials
Thrombocytopenia 4
Purpura, Thrombocytopenic, Idiopathic 2
Purpura 1
Hepatitis, Chronic 1
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Clinical Trial Locations for avatrombopag maleate

Trials by Country

Trials by Country for avatrombopag maleate
Location Trials
United States 3
Ukraine 1
Belgium 1
Czechia 1
Poland 1
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Trials by US State

Trials by US State for avatrombopag maleate
Location Trials
South Dakota 1
Virginia 1
California 1
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Clinical Trial Progress for avatrombopag maleate

Clinical Trial Phase

Clinical Trial Phase for avatrombopag maleate
Clinical Trial Phase Trials
Phase 4 1
Phase 3 2
Phase 2 1
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Clinical Trial Status

Clinical Trial Status for avatrombopag maleate
Clinical Trial Phase Trials
Completed 2
Terminated 1
Recruiting 1
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Clinical Trial Sponsors for avatrombopag maleate

Sponsor Name

Sponsor Name for avatrombopag maleate
Sponsor Trials
Eisai Inc. 3
Chinese PLA General Hospital 1
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Sponsor Type

Sponsor Type for avatrombopag maleate
Sponsor Trials
Industry 3
Other 1
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Last updated: May 25, 2026

Avatrombopag Maleate Clinical Trials Update, Market Analysis, and Revenue Projection (2026–2035)

Executive summary: Avatrombopag maleate (Doptelet; Dova Pharmaceuticals/Astellas) is a small-molecule thrombopoietin receptor agonist with two FDA-approved U.S. indications: (1) chronic immune thrombocytopenia (ITP) in adults with insufficient response to prior treatment and (2) thrombocytopenia in patients with chronic liver disease undergoing procedures. Post-approval trial activity is concentrated in label-supportive studies (ITP subpopulations, long-term safety), peri-procedural use expansion work, and comparative/combination research. Near-term commercial outlook depends on procedure volume, penetration against standard-of-care (platelet transfusion, rescue steroids, and thrombopoietin analogs), payer restrictions tied to evidence and dosing rules, and any incremental label expansion. Without current, verifiable counts of ongoing Phase 1–3 trials by country, recruitment status, and endpoints, an evidence-based, source-cited projection cannot be produced to the standard required for licensing, investment, or litigation use.

What clinical trials are ongoing for avatrombopag maleate and what results matter?

Featured snippet answer: The clinically relevant “update” for avatrombopag is the status of Phase 3 and label-supportive studies for ITP and chronic liver disease procedural thrombocytopenia, plus long-term extension safety and any new-combination or peri-procedural expansions.

ITP trials: what endpoints are tracked

For ITP, the commercial and regulatory relevance typically centers on:

  • Durable platelet response rates (overall response, sustained response windows).
  • Time to platelet response and need for rescue therapy.
  • Long-term safety in chronic dosing patterns (thrombosis, marrow effects).
  • Subgroup performance by baseline platelet count and prior ITP therapies.

Chronic liver disease procedure trials: what endpoints drive adoption

For chronic liver disease, adoption depends on:

  • Platelet count thresholds achieved by procedure day.
  • Reduction in platelet transfusions and bleeding events.
  • Peri-procedural usability (dosing window logistics and adherence).
  • Comparative outcomes versus platelet transfusion and other hemostatic strategies.

What to treat as “decision-grade” clinical updates

Decision-grade updates for market projections are:

  • FDA label changes or supplemental approvals tied to new endpoints or broader populations.
  • Trial readouts that change payer policies (e.g., stronger bleeding-risk reduction, simplified dosing schedules).
  • Evidence that shifts positioning against competing thrombopoietin receptor agonists.

How big is the avatrombopag maleate market and where is demand concentrated?

Featured snippet answer: Demand is concentrated in (1) adult chronic ITP management in patients who have insufficient response to prior treatment and (2) peri-procedural thrombocytopenia management in chronic liver disease where the goal is to avoid platelet transfusion.

Demand drivers

  • Volume of procedures in chronic liver disease (endoscopy, biopsy, interventions) that create platelet-count management needs.
  • ITP treatment patterns for adult refractory or later-line settings.
  • Guideline alignment and payer coverage criteria requiring documentation of prior therapy or procedure timing.
  • Switch behavior among thrombopoietin receptor agonists.

Supply and access dynamics

  • Formulary coverage and prior authorization restrictions.
  • Specialty pharmacy distribution and patient support programs.
  • Local availability versus competitors that may have preferential coverage.

Key buying centers

  • Hematology practices for chronic ITP.
  • Hepatology and gastroenterology procedure centers for chronic liver disease.

Which companies compete with avatrombopag in ITP and chronic liver disease procedures?

Featured snippet answer: Avatrombopag competes within thrombopoietin receptor agonist and supportive-care strategies. Primary competitive pressure comes from other thrombopoietin receptor agonists and competing peri-procedural thrombocytopenia management approaches.

Competitive set to benchmark

  • Other thrombopoietin receptor agonists for ITP (e.g., eltrombopag, romiplostim).
  • Peri-procedural platelet management alternatives (platelet transfusion, other hemostatic strategies, local standard-of-care pathways).
  • Emerging agents or new data that shift guideline recommendations.

Competitive positioning that affects uptake

  • Evidence quality for platelet response durability and clinically meaningful bleeding endpoints.
  • Dosing simplicity and operational alignment with procedure scheduling.
  • Safety profile in real-world refractory ITP populations.

When does avatrombopag lose exclusivity and what patent estate risks exist?

Featured snippet answer: Loss of exclusivity is driven by the specific U.S. patent term and any pediatric exclusivity or market exclusivity tied to the NDA/BLA, plus any expiration of formulation, method, and use patents. A complete, source-cited timeline and patent risk map is not deliverable here without current Orange Book and patent-listing facts.

What would be needed for an exclusivity timeline

A decision-grade exclusivity and generic-risk view requires:

  • Orange Book patent numbers, claim types, and expiration dates.
  • Related method-of-use and formulation patent coverage.
  • Any FDA exclusivity (5-year new chemical entity, 3-year new clinical investigation, pediatric extensions).

What is the Orange Book status of avatrombopag maleate?

Featured snippet answer: The Orange Book status (listed patents, expiration dates, and exclusivity codes) determines the timing and likelihood of Paragraph IV filings. A compliant, accurate Orange Book status summary cannot be produced without the patent and exclusivity listing records.

What patent litigation affects avatrombopag maleate and biosimilar or generic entry risks?

Featured snippet answer: Litigation risk for a small-molecule like avatrombopag is primarily driven by Paragraph IV ANDA filings challenging Orange Book-listed patents and any related district court outcomes. A compliant litigation and settlement risk map requires verified docket and settlement data, which is not present in the input.

How strong is the patent estate for avatrombopag maleate (formulations, methods, and uses)?

Featured snippet answer: The strength of the patent estate is assessed across:

  • Method-of-use patents for ITP and chronic liver disease procedural indications.
  • Formulation/polymorph and dosage form patents.
  • Manufacturing/process patents if present.

A quantified strength view, including claim scope and likely design-around pathways, is not possible without the exact patent list and claim coverage.

Clinical pipeline: what future studies could expand the indications or expand share?

Featured snippet answer: The highest-impact pipeline updates are studies that broaden adult eligibility, improve peri-procedural predictability, or demonstrate advantage over standard-of-care bleeding management.

Potential expansion categories

  • Earlier-line or broader refractory definitions in ITP.
  • Alternative procedure types in chronic liver disease.
  • Combination regimens or reduced rescue therapy strategies.
  • Real-world evidence studies that reduce payer friction.

What is the revenue projection for avatrombopag maleate from 2026 to 2035?

Featured snippet answer: A credible revenue projection requires current, source-cited baseline revenue, market size, trial milestones that affect uptake, and payer or guideline changes. Those inputs are not available in the provided material.

Projection framework that investment committees use

A robust projection model typically ties:

  • Diagnosed population sizes (ITP, chronic liver disease with planned procedures).
  • Eligible fraction under labeling criteria.
  • Share captured versus competing agents.
  • Treatment duration and dosing adherence.
  • Price net of rebates and payer coverage changes.
  • Competitive erosion from other thrombopoietin receptor agonists and any generic entry timing.

Why a projection cannot be completed here

This response cannot provide source-cited numeric forecasts without verifiable inputs for (a) current sales baseline and (b) exclusivity/patent timeline that determines generic pressure.

Key Takeaways

  • Avatrombopag’s commercial demand is driven by adult chronic ITP management and peri-procedural thrombocytopenia in chronic liver disease.
  • The decision-grade clinical updates for market impact are label-supportive readouts, long-term safety, and data that reduce bleeding risk or platelet transfusion need.
  • A source-cited market sizing, exclusivity timeline, litigation risk, and 2026–2035 revenue projection cannot be produced to a business-usable standard without Orange Book and current clinical pipeline status data.

FAQs

  1. What patient populations are most likely to be eligible for avatrombopag in chronic ITP?
  2. How does avatrombopag dosing align with procedure scheduling in chronic liver disease?
  3. Which thrombopoietin receptor agonists most directly compete with avatrombopag for ITP share?
  4. What payer criteria usually determine access to avatrombopag maleate for peri-procedural use?
  5. What trial endpoints best predict long-term utilization of avatrombopag in adult ITP?

References

  1. FDA Orange Book database (Drug Products)
  2. ClinicalTrials.gov records for avatrombopag maleate (status, results, and study phases)

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