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Showing 1–24 of 29 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Fostamatinib 150 mg Clear all
Terminated Phase 2 Interventional Results available

Open-Label, Multicenter Extension Study for Patients Completing Treatment Phase of a Rigel-Sponsored R935788 Studies

NCT00805467
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
Fostamatinib Disodium (R935788)
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
624 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
35
States / cities
La Jolla, California • Palm Desert, California • Palo Alto, California + 32 more
Source: ClinicalTrials.gov public record
Updated Jun 24, 2014 · Synced Sep 17, 2026, 6:07 AM EDT
Terminated Phase 2 Interventional Results available

Fostamatinib as a Single Agent or in Combination With Ruxolitinib for Treatment of Patients With Myelofibrosis With Severe Thrombocytopenia

NCT04543279
View directory record Official record
Conditions
Myelofibrosis, Thrombocytopenia
Interventions
Fostamatinib, Ruxolitinib
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 14, 2023 · Synced Sep 17, 2026, 6:07 AM EDT
Completed Phase 1 Interventional Results available

Clinical Trial of Combined Fostamatinib and Paclitaxel in Ovarian Cancer

NCT03246074
View directory record Official record
Conditions
Ovarian Cancer
Interventions
Fostamatinib 100 mg bid and Paclitaxel, Fostamatinib 150 mg bid and Paclitaxel, Fostamatinib 200 mg bid and Paclitaxel
Drug
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Other
Eligibility
18 Years to 100 Years · Female only
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
3
States / cities
Washington D.C., District of Columbia • Baltimore, Maryland • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 23, 2024 · Synced Sep 17, 2026, 6:07 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effects of Administration of Fostamatinib on Blood Concentrations of Rifampicin in Healthy Subjects.

NCT01336218
View directory record Official record
Conditions
Rheumatoid Arthritis, Healthy Volunteers
Interventions
fostamatinib, rifampicin
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 55 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 21, 2011 · Synced Sep 17, 2026, 6:07 AM EDT
Completed Phase 3 Interventional Results available

Evaluation of Effectiveness of Two Dosing Regimens of Fostamatinib Compared to Placebo in Patients With Rheumatoid Arthritis (RA) Who Are Taking Disease Modifying Anti-rheumatic Drug (DMARD) But Not Responding.

NCT01197534
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
fostamatinib, placebo, fostamatinib
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
913 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
57
States / cities
Birmingham, Alabama • Glendale, Arizona • Mesa, Arizona + 54 more
Source: ClinicalTrials.gov public record
Updated Apr 16, 2014 · Synced Sep 17, 2026, 6:07 AM EDT
Completed Phase 2 Interventional Results available

Efficacy and Safety Study of R935788 Tablets to Treat Rheumatoid Arthritis

NCT00665925
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
Fostamatinib disodium (R935788), Placebo
Drug
Lead sponsor
Rigel Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
457 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
24
States / cities
La Jolla, California • Palm Desert, California • Hamden, Connecticut + 21 more
Source: ClinicalTrials.gov public record
Updated Sep 15, 2016 · Synced Sep 17, 2026, 6:07 AM EDT
Terminated Phase 2 Interventional Results available

Using Fostamatinib to Treat Post-Hematopoietic Stem Cell Transplant Immune-mediated Cytopenias

NCT05502783
View directory record Official record
Conditions
Immune Mediated Anemia, Immune Mediated Thrombocytopenia, Chronic GVHD
Interventions
fostamatinib
Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 75 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 4, 2025 · Synced Sep 17, 2026, 6:07 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of Fostamatinib in Subjects With Impaired Hepatic (Liver) Function

NCT01222455
View directory record Official record
Conditions
Hepatic Impairment, Healthy Volunteers, Pharmacokinetics, Amount of R406 in Blood
Interventions
Fostamatinib
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Jul 5, 2011 · Synced Sep 17, 2026, 6:07 AM EDT
Recruiting Phase 1 Interventional

Study to Evaluate the Safety and Tolerability of Escalating Doses of Fostamatinib in Subjects With Stable Sickle Cell Disease

NCT05904093
View directory record Official record
Conditions
Sickle Cell Disorders, Sickle Cell Disease, Hemoglobin S, Hb-SS Disease, Disease Sickle Cell Anemia
Interventions
Fostamatinib
Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 65 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 15, 2026 · Synced Sep 17, 2026, 6:07 AM EDT
Completed Phase 2 Interventional

A Safety and Efficacy Study of R935788 in the Treatment of Warm Antibody Autoimmune Hemolytic Anemia (AIHA)

NCT02612558
View directory record Official record
Conditions
Warm Antibody Autoimmune Hemolytic Anemia
Interventions
Fostamatinib 150 mg bid
Drug
Lead sponsor
Rigel Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
31
States / cities
Gilbert, Arizona • Tucson, Arizona • La Jolla, California + 27 more
Source: ClinicalTrials.gov public record
Updated Jul 20, 2021 · Synced Sep 17, 2026, 6:07 AM EDT
Completed Phase 2 Interventional Results available

Fostamatinib for Hospitalized Adults With COVID-19

NCT04579393
View directory record Official record
Conditions
Coronavirus Disease 2019
Interventions
Placebo, fostamatinib
Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years and older
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
2
States / cities
Bethesda, Maryland • Falls Church, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 1, 2022 · Synced Sep 17, 2026, 6:07 AM EDT
Withdrawn Phase 2 Interventional

Extension Study (Extended Access) of Syk-inhibition Using Fostamatinib to Treat Posttransplant Immune-mediated Cytopenias

NCT05509582
View directory record Official record
Conditions
Immune Mediated Anemia, Immune Mediated Thrombocytopenia, Chronic GVHD
Interventions
fostamatinib
Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 9, 2025 · Synced Sep 17, 2026, 6:07 AM EDT
Completed Phase 2 Interventional Results available

Safety and Efficacy Study of Fostamatinib to Treat Immunoglobin A (IgA) Nephropathy

NCT02112838
View directory record Official record
Conditions
IGA Nephropathy
Interventions
Fostamatinib 150 mg, Fostamatinib 100 mg, Placebo
Drug
Lead sponsor
Rigel Pharmaceuticals
Industry
Eligibility
18 Years to 70 Years
Enrollment
76 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
4
States / cities
Palo Alto, California • Augusta, Georgia • Columbus, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 26, 2019 · Synced Sep 17, 2026, 6:07 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Assess the Bioequivalence of R406 in Healthy Volunteers When Given 100mg and 150 mg of Fostamatinib

NCT01645085
View directory record Official record
Conditions
Healthy Volunteers
Interventions
MCC-based 13% drug loaded tablets, Mannitol-based 38% drug-loaded tablet
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 55 Years
Enrollment
88 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Mar 18, 2013 · Synced Sep 17, 2026, 6:07 AM EDT
Recruiting Phase 1 Interventional

Syk Inhibition in MItigating Lung Allograft Rejection (SIMILAR): A Trial to Evaluate the Safety and Tolerability of Fostamatinib in Lung Transplant Patients With Donor-Specific Antibodies

NCT06948097
View directory record Official record
Conditions
Lung Transplantation
Interventions
fostamatinib, Placebo
Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 99 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
4
States / cities
Stanford, California • Baltimore, Maryland • Salt Lake City, Utah + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 15, 2026 · Synced Sep 17, 2026, 6:07 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study in Healthy Males to Assess the Bioavailability of 4 Different Fostamatinib Tablets

NCT01387308
View directory record Official record
Conditions
Healthy
Interventions
Fostamatinib
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Oct 27, 2011 · Synced Sep 17, 2026, 6:07 AM EDT
Completed Phase 3 Interventional Results available

Evaluation of Effectiveness of Two Dosing Regimens of Fostamatinib Compared to Placebo in Patients With Rheumatoid Arthritis (RA) Who Are Taking Methotrexate But Not Responding.

NCT01197521
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
fostamatinib, placebo, fostamatinib
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
923 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
41
States / cities
Anniston, Alabama • Huntsville, Alabama • Tuscaloosa, Alabama + 38 more
Source: ClinicalTrials.gov public record
Updated Apr 6, 2014 · Synced Sep 17, 2026, 6:07 AM EDT
Completed Phase 3 Interventional

Double-Blind, Randomized, Placebo-Controlled, Multi-Center Phase 3 Study to Evaluate the Efficacy and Safety of Fostamatinib in COVID-19 Subjects

NCT04629703
View directory record Official record
Conditions
Covid19, SARS (Severe Acute Respiratory Syndrome), SARS Pneumonia, SARS-Associated Coronavirus as Cause of Disease Classified Elsewhere, Pneumonia, Pneumonia, Viral
Interventions
Fostamatinib, Placebo
Drug
Lead sponsor
Rigel Pharmaceuticals
Industry
Eligibility
18 Years to 100 Years
Enrollment
280 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
9
States / cities
Orange, California • Washington D.C., District of Columbia • Hialeah, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Aug 17, 2023 · Synced Sep 17, 2026, 6:07 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Assess Pharmacokinetics of Fostamatinib in Fed and Fasted State in Combination With Ranitidine to Assess Bioavailability

NCT01682408
View directory record Official record
Conditions
Pharmacokinetics
Interventions
Fostamatinib - 1 x 150mg mannitol-based 38% drug-loaded tablet(orange reference), Fostamatinib - 3 x 50mg microcrystalline cellulose-based 13% drug loaded tablets,(blue) fed, Fostamatinib - 1 x 150mg mannitol based 38% drug-loaded tablet (batch variant A), Fostamatinib - 1 x 150mg mannitol based 38% drug loaded tablet (batch variant B), Ranitidine
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 55 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Dec 27, 2012 · Synced Sep 17, 2026, 6:07 AM EDT
Completed Phase 3 Interventional Results available

Open Label Study of R788 in the Treatment of Persistent/Chronic Immune Thrombocytopenic Purpura (ITP)

NCT02077192
View directory record Official record
Conditions
Immune Thrombocytopenic Purpura
Interventions
Fostamatinib Disodium
Drug
Lead sponsor
Rigel Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
123 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
9
States / cities
Tucson, Arizona • Peoria, Illinois • Lafayette, Indiana + 5 more
Source: ClinicalTrials.gov public record
Updated Dec 10, 2023 · Synced Sep 17, 2026, 6:07 AM EDT
Completed Phase 3 Interventional Results available

A Phase 3, Multi-Center, Randomized, Double-Blind, Placebo-Controlled, Study of Fostamatinib Disodium in the Treatment of wAIHA

NCT03764618
View directory record Official record
Conditions
Warm Antibody Autoimmune Hemolytic Anemia
Interventions
Fostamatinib disodium, Placebo
Drug
Lead sponsor
Rigel Pharmaceuticals
Industry
Eligibility
18 Years to 100 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
26
States / cities
Gilbert, Arizona • Phoenix, Arizona • Tucson, Arizona + 22 more
Source: ClinicalTrials.gov public record
Updated May 24, 2023 · Synced Sep 17, 2026, 6:07 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of Fostamatinib in Subjects With Impaired Kidney Function

NCT01245790
View directory record Official record
Conditions
Rheumatoid Arthritis, Renal Impairment
Interventions
fostamatinib
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Jun 15, 2011 · Synced Sep 17, 2026, 6:07 AM EDT
Completed Phase 1 Interventional

Evaluation of Fostamatinib in Patients With cGVHD After Allogeneic Stem Cell Transplant

NCT02611063
View directory record Official record
Conditions
Hematological Malignancies
Interventions
fostamatinib
Drug
Lead sponsor
Stefanie Sarantopoulos, MD, PhD.
Other
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 16, 2023 · Synced Sep 17, 2026, 6:07 AM EDT
Enrolling by invitation Phase 3 Interventional

A Phase 3 Open Label Extension Study of Fostamatinib Disodium in the Treatment of Warm Antibody Autoimmune Hemolytic Anemia

NCT04138927
View directory record Official record
Conditions
Warm Antibody Autoimmune Hemolytic Anemia
Interventions
Fostamatinib disodium
Drug
Lead sponsor
Rigel Pharmaceuticals
Industry
Eligibility
18 Years to 100 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
8
States / cities
Los Angeles, California • Torrance, California • Washington D.C., District of Columbia + 5 more
Source: ClinicalTrials.gov public record
Updated Mar 16, 2022 · Synced Sep 17, 2026, 6:07 AM EDT