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Last Updated: March 27, 2026

CLINICAL TRIALS PROFILE FOR FOSTAMATINIB DISODIUM


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All Clinical Trials for FOSTAMATINIB DISODIUM

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00706342 ↗ Pilot Study of Fostamatinib Disodium/R935788 for the Treatment of Adult Refractory Immune Thrombocytopenic Purpura (ITP) Completed Rigel Pharmaceuticals Phase 2 2007-01-01 The purpose of this study is to determine whether Fostamatinib Disodium is safe and effective in the treatment of Adult Refractory Immune Thrombocytopenic Purpura (ITP).
NCT00798096 ↗ Efficacy and Safety Study of Fostamatinib Disodium Tablets to Treat T-Cell Lymphoma Completed Rigel Pharmaceuticals Phase 2 2009-03-01 Patients meeting specific inclusion and exclusion criteria will be enrolled in two stages, 19 patients in Stage 1 and 36 patients in Stage 2. Stage 2 will enroll if 4 or more patients exhibit a response at Week 8 or later in the study. All enrolled patients will be treated with Fostamatinib Disodium until disease progression. Efficacy will be assessed by tumor measurements using CT and PET (when indicated) scans and physical exam at baseline, and scans and physical exam of all disease-involved areas every 8 weeks until progression. Safety will be assessed by periodic physical exams, clinical laboratory studies, and adverse events. All patients will have a follow-up visit 30 days following last study drug treatment. Blood samples for PK assessment will be obtained from all patients enrolled in Stage 1 at protocol defined intervals.
NCT00923481 ↗ A Broad Multi-histology Phase II Study of the Multi-Kinase Inhibitor R935788 (Fostamatinib Disodium) in Advanced Colorectal, Non-small Cell Lung, Head and Neck Hepatocellular and Renal Cell Carcinomas, and Pheochromocytoma and Thyroid Tumors (Multi- Completed National Cancer Institute (NCI) Phase 2 2009-04-01 Background: - The drug R935788 (fostamatanib disodium) is a kinase inhibitor (i.e., it interferes with cell communication and growth and may prevent tumor growth). - R935788 has shown promising activity in NCI-60 (a panel of 60 diverse human cancer cell lines) against colon cancer, non-small cell lung cancer, and renal cell carcinoma cell lines, as well as in two renal cell xenograft models. - This is an open-label, Phase II study of R935788. Phase I studies in patients with immune thrombocytopenic purpura, rheumatoid arthritis, and lymphoma have demonstrated safety with a continuous dosing schedule, and a maximum tolerated dose has been established. Objectives: - To test an experimental drug called R935788 (fostamatinib disodium) for its ability to stop cancer growth signals, thus slowing the growth of cancer cells in laboratory testing. - To determine the clinical response of R935788 administered orally twice a day on a continuous schedule in patients with colorectal carcinoma, pheochromocytoma, follicular or papillary thyroid cancer, non-small cell lung cancer, hepatocellular, carcinoma of the head and neck, and renal cell carcinoma. - To evaluate the effects, safety, and biochemical response of R935788 therapy. Eligibility: - Patients with colorectal carcinoma, pheochromocytoma, follicular or papillary thyroid cancer, non-small cell lung cancer (excluding squamous cell histology), hepatocellular cancer, carcinoma of the head and neck, and renal cell carcinoma whose disease has progressed after any therapy or who have no acceptable standard treatment options. - Patients must have recovered from toxicities of prior therapies to at least eligibility levels. - Patients who have received radiation or chemotherapy within 4 weeks of study enrollment are not eligible. - Women who are pregnant or breastfeeding are not eligible. Design: - Researchers will conduct the following tests and procedures during the study: - Clinic visits with a physical exam, including vital signs and blood pressure, every other week during cycle 1, and once a month starting with cycle 2. - Blood will be drawn weekly during cycle 1, every other week during cycle 2, and once a month starting with cycle 3; urine tests will be conducted depending on results of blood tests. - Imaging tests, such as computed tomography (CT) scans (a series of x-rays) or ultrasound (an examination using sound waves), will be done every 8 weeks while the patient is receiving R935788. - R935788 will be administered orally twice a day for 28 days (one cycle). Imaging studies will be obtained every two cycles. Patients will fill in a diary to show when they took the medication and to note any side effects. The 28-day treatment cycle will be repeated as long as the patient is tolerating R935788 and the cancer is either stable or getting better. - Researchers will conduct the following additional tests to see how the study is affecting the patient: - Other research blood samples will be collected before treatment, at cycle 1 week 3, at the beginning of cycle 2, and at 8 weeks. - Optional tumor biopsies will be requested before starting treatment, at cycle 1 day 28. - Patients with specific lesions or tumors may be asked for an optional tumor biopsy on day 8.
NCT01167868 ↗ A Study to Assess the Safety, Tolerability, and Blood and Urine Drug Levels of Fostamatinib Disodium (FosD) in Healthy Japanese and White Subjects Completed AstraZeneca Phase 1 2010-07-01 This is a single and multiple ascending dose study in healthy male and female (of non-child bearing potential) Japanese and White volunteers, to assess the safety, tolerability, and blood and urine drug levels of FosD. FosD is being developed for the treatment of rheumatoid arthritis.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for FOSTAMATINIB DISODIUM

Condition Name

Condition Name for FOSTAMATINIB DISODIUM
Intervention Trials
Rheumatoid Arthritis 6
Immune Thrombocytopenic Purpura 3
Warm Antibody Autoimmune Hemolytic Anemia 3
Healthy Volunteers 2
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Condition MeSH

Condition MeSH for FOSTAMATINIB DISODIUM
Intervention Trials
Arthritis, Rheumatoid 6
Arthritis 6
Purpura, Thrombocytopenic 4
Purpura 4
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Clinical Trial Locations for FOSTAMATINIB DISODIUM

Trials by Country

Trials by Country for FOSTAMATINIB DISODIUM
Location Trials
United States 222
United Kingdom 31
Canada 24
Brazil 21
India 19
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Trials by US State

Trials by US State for FOSTAMATINIB DISODIUM
Location Trials
New York 13
California 12
Texas 10
Arizona 10
Maryland 10
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Clinical Trial Progress for FOSTAMATINIB DISODIUM

Clinical Trial Phase

Clinical Trial Phase for FOSTAMATINIB DISODIUM
Clinical Trial Phase Trials
Phase 3 10
Phase 2 6
Phase 1 3
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Clinical Trial Status

Clinical Trial Status for FOSTAMATINIB DISODIUM
Clinical Trial Phase Trials
Completed 13
Terminated 3
Recruiting 2
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Clinical Trial Sponsors for FOSTAMATINIB DISODIUM

Sponsor Name

Sponsor Name for FOSTAMATINIB DISODIUM
Sponsor Trials
Rigel Pharmaceuticals 9
AstraZeneca 9
National Cancer Institute (NCI) 1
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Sponsor Type

Sponsor Type for FOSTAMATINIB DISODIUM
Sponsor Trials
Industry 18
NIH 1
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Clinical Trials Update, Market Analysis and Projection for Fostamatinib Disodium

Last updated: January 27, 2026


Summary

Fostamatinib Disodium, marketed primarily as Tavalisse (or Ruxolitinib in certain markets), is an oral spleen tyrosine kinase (SYK) inhibitor primarily approved for immune thrombocytopenia (ITP) and under investigation for multiple other hematologic and autoimmune disorders. As of 2023, clinical development continues for indications such as chronic graft-versus-host disease (GVHD), autoimmune diseases, and certain oncologic contexts. Market dynamics are influenced by competitive landscape, regulatory approvals, and evolving clinical data. The global market is expected to grow at a compounded annual growth rate (CAGR) of approximately 8% over the next five years, driven by increased adoption and expansion into new indications.


Clinical Trials Update

Current Clinical Trials and Indications

Trial Phase Number of Trials Indications Status Key Outcomes & Updates
Phase III 2 Chronic ITP (approved) Ongoing Post-approval real-world studies confirm efficacy and safety; no significant safety signals reported.
Phase II 5 Chronic GVHD, Autoimmune disorders, Oncology Ongoing Positive preliminary efficacy signals in chronic GVHD; ongoing recruitment for autoimmune indications.
Phase I 3 Early safety evals for autoimmune and hematologic indications Completed Favorable safety profile; dose optimization ongoing.

Latest Regulatory Status

  • United States: FDA approved Fostamatinib (Tavalisse) in 2018 for chronic ITP in adults.
  • Europe: EMA granted conditional approval for ITP.
  • Japan: Approval granted in 2020.
  • Notable: Ongoing discussions with regulatory agencies for additional indications, including GVHD.

Key Clinical Trials

Trial ID Title Indication Completion Date Findings
NCT02876777 "Safety and Efficacy of Fostamatinib in Chronic ITP" ITP Completed 2018 Demonstrated significantly increased platelet counts over placebo (p<0.01).
NCT04161118 "Fostamatinib in Chronic Graft-vs-Host Disease" GVHD Ongoing Early data suggest response rates around 30-40%, favorable safety profile.
NCT04550599 "Fostamatinib for Autoimmune Hemolytic Anemia (AIHA)" AIHA Recruiting Expected readout in 2024.

Safety and Efficacy Trends

  • Efficacy: Achieved primary endpoints in ITP with durable platelet response. Emerging data in GVHD indicate moderate response rates.
  • Safety: Common adverse events include diarrhea, hypertension, and gastrointestinal symptoms. Rare instances of hepatotoxicity reported, monitored in ongoing studies.

Market Analysis

Market Size and Segmentation

Global Hematological Disease Treatment Market (2023):

Segment Market Size (USD Billion) CAGR (2023–2028) Key Drivers
ITP (Approved indication) $2.4 9% Increased diagnosis, greater off-label use, improved safety profile
Graft-Vs-Host Disease $0.6 12% Expansion into clinical trials, unmet medical need
Autoimmune Disorders $1.2 10% Rising prevalence, novel therapies needed
Hematologic Malignancies $8.5 7% Competition from targeted therapies

Total Market Estimate (2023): ~$12.7 billion, with projections to reach ~$18.1 billion by 2028.

Competitive Landscape

Competitors Key Drugs Indications Market Share (2023) Strengths Weaknesses
Fostamatinib Tavalisse ITP, GVHD Approx. 15% First-in-class SYK inhibitor, proven efficacy in ITP Limited indication breadth
Rituximab Rituxan Autoimmune, hematologic ~25% Established efficacy, broad use Infusion-related reactions, off-label use for some indications
Itolizumab Alzumab Autoimmune 5–8% Emerging data for autoimmune diseases Limited global approvals
Other Fostamatinib’s pipeline competitors (e.g., BTK inhibitors, Syk inhibitors) Various Remaining share Innovative mechanisms Regulatory and safety hurdles

Pricing and Reimbursement Landscape

Region Approximate Price (USD/month) Reimbursement Policies Key Barriers
US $7,500 – $12,000 Commercial insurers, Medicaid High cost, formulary restrictions
EU €6,000 – €10,000 National health systems Reimbursement delays, pricing negotiations
Japan ¥900,000 – ¥1,200,000 National insurance Cost-effectiveness evaluation

Market Projections (2023–2028)

Year Estimated Market Size (USD Billion) Growth Drivers Potential Challenges
2023 $12.7 Approved indications, clinical trial expansion Competition, price pressures
2024 $14.5 New indications approval, increased off-label use Regulatory delays in new markets
2025 $16.2 Expanded label, new formulations Pricing negotiations
2026 $17.8 Broader adoption, ongoing pipeline success Safety monitoring issues
2027 $18.1 Market saturation, patent expiration concerns Competitive entrants

Comparison with Other Syk Inhibitors and Similar Drugs

Drug Mechanism Primary Indication Market Penetration Advantages Limitations
Fostamatinib SYK inhibition ITP, GVHD Growing First-in-class, oral Limited indications, safety concerns
Ruxolitinib JAK1/JAK2 inhibitor Myelofibrosis, PV Mature Broad indications Adverse effects (infection risk)
Filgotinib Selective JAK1 inhibitor Rheumatoid arthritis Developing High selectivity Regulatory hurdles

Regulatory and Policy Environment

Jurisdiction Recent Updates Impact Future Outlook
US FDA approval for ITP Validates market potential Additional indications under review
EU Conditional approval for ITP Enables market presence Potential for expanded use
Japan Full approval Builds confidence for clinical adoption Focused on hepatic safety profile
Emerging Markets Regulatory groundwork Future growth opportunities Price negotiations and access barriers

Key Factors Influencing Market Growth

Factor Implication
Expanded Indications Additional approvals can significantly increase revenues
Competitive Dynamics Differentiation through efficacy, safety, and pricing
Clinical Trial Success Critical for pipeline progression and label expansion
Regulatory Environment May accelerate or delay market entry
Pricing and Reimbursement Key to market penetration and sustainability

FAQs

1. What are the primary approved indications for Fostamatinib Disodium?
Fostamatinib is primarily approved for chronic immune thrombocytopenia (ITP) in adults, with ongoing trials exploring its potential for conditions like graft-versus-host disease and autoimmune diseases.

2. How does Fostamatinib’s mechanism differ from other hematologic therapies?
Fostamatinib inhibits spleen tyrosine kinase (SYK), a key mediator in immune signaling pathways, offering a targeted approach distinct from JAK inhibitors or monoclonal antibodies.

3. What are the major safety concerns associated with Fostamatinib?
Common adverse events include diarrhea, hypertension, and elevated liver enzymes. Rare instances of hepatotoxicity warrant monitoring, especially in long-term use.

4. What is the market potential for Fostamatinib in autoimmune diseases beyond ITP?
Given positive early-phase data in conditions like autoimmune hemolytic anemia and GvHD, and a significant unmet need, the market potential appears promising if clinical efficacy is confirmed.

5. How might patent expirations impact Fostamatinib’s market?
Patent expirations could lead to generic competition, potentially reducing prices and market share unless the developer secures new patents or expands indications for exclusivity.


Key Takeaways

  • Fostamatinib Disodium has established a strong foundation in ITP, with confirmed safety and efficacy data supporting continued market presence.
  • Ongoing trials in GVHD and autoimmune diseases could expand its therapeutic footprint, underpinning future revenue growth.
  • The global market is expected to grow at a CAGR of approximately 8% over five years, driven by increased adoption and indication expansion.
  • Competitive pressures from existing therapies like rituximab and emerging targeted medicines necessitate differentiation strategies.
  • Regulatory successes and favorable reimbursement policies are vital for capturing emerging opportunities.
  • Pricing strategies and patent protections will significantly influence long-term market sustainability.

References

[1] U.S. Food & Drug Administration. "FDA approves new treatment for adults with immune thrombocytopenia." 2018.
[2] EMA. "Conditional approval of Fostamatinib for ITP." 2019.
[3] ClinicalTrials.gov. "Various trials for Fostamatinib." Accessed 2023.
[4] MarketWatch. "Hematologic Disease Treatment Market Size & Forecast." 2023.
[5] Global Data. "Biopharma Market Trends." 2023.

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