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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Thrombotic Microangiopathy Clear all
Completed Not applicable Interventional

Vaccine Response After Rituximab for Chronic, Severe Idiopathic Thrombocytopenic Purpura

NCT01713855
View directory record Official record
Conditions
Idiopathic Thrombocytopenic Purpura, Immune Thrombocytopenic Purpura
Interventions
Inactivated Trivalent Influenza vaccine
Biological
Lead sponsor
Neufeld, Ellis J, MD, PhD
Individual
Eligibility
18 Months to 18 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
3
States / cities
Los Angeles, California • Atlanta, Georgia • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 24, 2012 · Synced Jul 22, 2026, 2:21 AM EDT
Completed Phase 2 Interventional Results available

Low Dose Rituximab in Thrombotic Thrombocytopenic Purpura

NCT01554514
View directory record Official record
Conditions
Thrombotic Thrombocytopenic Purpura
Interventions
rituximab
Biological
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2020
U.S. locations
4
States / cities
Atlanta, Georgia • Boston, Massachusetts • St Louis, Missouri + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 16, 2021 · Synced Jul 22, 2026, 2:21 AM EDT
Terminated Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Safety and Tolerability of M254 in Healthy Volunteers and Immune Thrombocytopenic Purpura (ITP) Patients

NCT03866577
View directory record Official record
Conditions
Immune Thrombocytopenic Purpura (ITP)
Interventions
Biological: M254, Placebo, Intravenous immunoglobulin (IVIg)
Biological · Drug
Lead sponsor
Momenta Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
6
States / cities
Los Angeles, California • Whittier, California • Miami Lakes, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated May 27, 2025 · Synced Jul 22, 2026, 2:21 AM 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 20, 2012 · Synced Jul 22, 2026, 2:21 AM EDT
Active, not recruiting Phase 2 Interventional

A Study of Ianalumab (VAY736) in Patients With Primary Immune Thrombocytopenia (ITP) Previously Treated With at Least Two Lines of Therapies

NCT05885555
View directory record Official record
Conditions
Primary Immune Thrombocytopenia (ITP)
Interventions
Ianalumab
Biological
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 100 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Jul 22, 2026, 2:21 AM 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 5, 2018 · Synced Jul 22, 2026, 2:21 AM EDT
Terminated No phase listed Observational

Octaplas Adult TTP Trial

NCT01938404
View directory record Official record
Conditions
Thrombotic Thrombocytopenic Purpura
Interventions
Octaplas, Standard Plasma
Biological · Drug
Lead sponsor
Octapharma
Industry
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
2
States / cities
Manhasset, New York • Rochester, New York
Source: ClinicalTrials.gov public record
Updated Oct 13, 2019 · Synced Jul 22, 2026, 2:21 AM EDT
Completed No phase listed Observational

Cognitive Status, Fatigue and Inflammation in Patients With Immune Thrombocytopenia (ITP)

NCT06665308
View directory record Official record
Conditions
Chronic Immune Thrombocytopenia, Primary Immune Thrombocytopenia, Adult Immune Thrombocytopenia
Interventions
No intervention
Other
Lead sponsor
Sanofi
Industry
Eligibility
18 Years and older
Enrollment
97 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
3
States / cities
Los Angeles, California • Boston, Massachusetts • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 25, 2026 · Synced Jul 22, 2026, 2:21 AM EDT
Terminated No phase listed Observational

Observational Study of Fostamatinib as Second Line Therapy in Adult Patients With Immune Thrombocytopenia (ITP) and Insufficient Response to a Prior Therapy

NCT04904276
View directory record Official record
Conditions
ITP, Immune Thrombocytopenia
Interventions
Fostamatinib
Drug
Lead sponsor
Rigel Pharmaceuticals
Industry
Eligibility
18 Years to 100 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
14
States / cities
Tamarac, Florida • Springfield, Illinois • Kansas City, Kansas + 10 more
Source: ClinicalTrials.gov public record
Updated Mar 14, 2024 · Synced Jul 22, 2026, 2:21 AM EDT
Recruiting Phase 1 Interventional

Phase 1b Trial of RAY121 in Immunological Diseases (RAINBOW Trial)

NCT06371417
View directory record Official record
Conditions
Antiphospholipid Syndrome (APS), Bullous Pemphigoid (BP), Behçet's Syndrome (BS), Dermatomyositis (DM), Immune-mediated Necrotizing Myopathy (IMNM), Immune Thrombocytopenia (ITP)
Interventions
RAY121
Drug
Lead sponsor
Chugai Pharmaceutical
Industry
Eligibility
18 Years to 85 Years
Enrollment
144 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
11
States / cities
Orange, California • Baltimore, Maryland • Lake Success, New York + 8 more
Source: ClinicalTrials.gov public record
Updated Apr 1, 2026 · Synced Jul 22, 2026, 2:21 AM EDT
Not listed No phase listed Observational

Identifying Characteristics of Bone Marrow Failure Syndromes

NCT00315419
View directory record Official record
Conditions
Bone Marrow Failure Syndromes, Anemia, Aplastic, Myelodysplastic Syndromes, Hemoglobinuria, Paroxysmal, Red-Cell Aplasia, Pure, Purpura, Thrombocytopenic, Leukemia, Lymphocytic
Interventions
Not listed
Lead sponsor
Office of Rare Diseases (ORD)
NIH
Eligibility
11 Years and older
Enrollment
450 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
4
States / cities
Los Angeles, California • Tampa, Florida • Cleveland, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 20, 2010 · Synced Jul 22, 2026, 2:21 AM EDT
Withdrawn No phase listed Observational

The Role of Microparticles as a Biomarker

NCT02626663
View directory record Official record
Conditions
Atypical Hemolytic Uremic Syndrome, Thrombotic Thrombocytopenic Purpura, Microparticles, Microangiopathic Hemolytic Anemia
Interventions
Not listed
Lead sponsor
University of Rochester
Other
Eligibility
18 Years to 120 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Feb 18, 2019 · Synced Jul 22, 2026, 2:21 AM EDT
Completed Phase 2 Interventional Results available

Defibrotide TMA Prophylaxis Pilot Trial

NCT03384693
View directory record Official record
Conditions
Thrombotic Microangiopathies
Interventions
Defibrotide
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
Up to 30 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 15, 2021 · Synced Jul 22, 2026, 2:21 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 Jul 22, 2026, 2:21 AM 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 Oct 31, 2013 · Synced Jul 22, 2026, 2:21 AM EDT
Completed No phase listed Observational

A Retrospective Chart Review of Thirty Three Children Who Have Received Clinical Treatment With Either Romiplostim or Eltrombopag From 2009-2013

NCT01974232
View directory record Official record
Conditions
Immune Thrombocytopenia
Interventions
Not listed
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
19 Months to 21 Years
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 31, 2017 · Synced Jul 22, 2026, 2:21 AM EDT
Terminated Phase 3 Interventional Results available

A Study to Assess the Efficacy, Safety, and Tolerability of Rozanolixizumab in Adult Study Participants With Persistent or Chronic Primary Immune Thrombocytopenia (ITP)

NCT04224688
View directory record Official record
Conditions
Primary Immune Thrombocytopenia
Interventions
Rozanolixizumab, Placebo
Drug · Other
Lead sponsor
UCB Biopharma SRL
Industry
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
2
States / cities
St. Petersburg, Florida • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 7, 2023 · Synced Jul 22, 2026, 2:21 AM EDT
Terminated Phase 1Phase 2 Interventional

PRTX-100-202 Open-Label, Dose Escalation Study in Adult Patients With ITP

NCT02401061
View directory record Official record
Conditions
Immune Thrombocytopenia
Interventions
PRTX-100
Drug
Lead sponsor
Protalex, Inc.
Industry
Eligibility
18 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
6
States / cities
Los Angeles, California • Boston, Massachusetts • Farmington Hills, Michigan + 3 more
Source: ClinicalTrials.gov public record
Updated Jul 4, 2019 · Synced Jul 22, 2026, 2:21 AM EDT
Terminated Phase 3 Interventional Results available

Initial Treatment of Patients With Immune Thrombocytopenic Purpura

NCT00991939
View directory record Official record
Conditions
Immune Thrombocytopenic Purpura
Interventions
Dexamethasone USP Micronized, Prednisone
Drug
Lead sponsor
Carelon Research
Other
Eligibility
15 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
18
States / cities
New Orleans, Louisiana • Baltimore, Maryland • Boston, Massachusetts + 10 more
Source: ClinicalTrials.gov public record
Updated Feb 13, 2014 · Synced Jul 22, 2026, 2:21 AM EDT
Completed Phase 2 Interventional Results available

A Study of TAK-079 in Adults With Persistent/Chronic Primary Immune Thrombocytopenia

NCT04278924
View directory record Official record
Conditions
Primary Immune Thrombocytopenia
Interventions
Placebo, TAK-079
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
7
States / cities
Tucson, Arizona • Gainesville, Florida • Peoria, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 14, 2025 · Synced Jul 22, 2026, 2:21 AM EDT
Completed Phase 3 Interventional Results available

EXTEND (Eltrombopag Extended Dosing Study)

NCT00351468
View directory record Official record
Conditions
Purpura, Thrombocytopaenic, Idiopathic
Interventions
eltrombopag olamine (SB-497115-GR)
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
302 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2015
U.S. locations
23
States / cities
Huntsville, Alabama • Mobile, Alabama • Jonesboro, Arkansas + 20 more
Source: ClinicalTrials.gov public record
Updated Apr 16, 2017 · Synced Jul 22, 2026, 2:21 AM EDT
Recruiting Phase 2 Interventional

Safety and Efficacy Study of PF-06835375 in Primary Immune Thrombocytopenia

NCT05070845
View directory record Official record
Conditions
Primary Immune Thrombocytopenia
Interventions
PF-06835375
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 70 Years
Enrollment
91 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
1
States / cities
Greenville, North Carolina
Source: ClinicalTrials.gov public record
Updated May 11, 2026 · Synced Jul 22, 2026, 2:21 AM EDT
Completed Phase 3 Interventional

Safety and Efficacy Study of a 10% Intravenous Immune Globulin Solution in Subjects With Primary Immunodeficiency Disorders

NCT00157079
View directory record Official record
Conditions
Primary Immunodeficiency Diseases (PID), Immune Thrombocytopenic Purpura (ITP), Kawasaki Syndrome
Interventions
Immune Globulin Intravenous (Human), 10%
Biological
Lead sponsor
Baxalta now part of Shire
Industry
Eligibility
24 Months and older
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2003
U.S. locations
11
States / cities
Los Angeles, California • Stanford, California • Englewood, Colorado + 8 more
Source: ClinicalTrials.gov public record
Updated Aug 23, 2021 · Synced Jul 22, 2026, 2:21 AM EDT
Completed Phase 2 Interventional Results available

Safety and Efficacy of Eltrombopag at Escalated Doses

NCT01880047
View directory record Official record
Conditions
Immune Thrombocytopenia, Platelet Disorder
Interventions
Eltrombopag, Placebo
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
12 Years and older
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 10, 2019 · Synced Jul 22, 2026, 2:21 AM EDT