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ClinicalTrials.gov public records Last synced Jul 22, 2026, 2:00 PM EDT

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Showing 1–24 of 56 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: ET (Essential Thrombocythemia) Clear all
Active, not recruiting Phase 3 Interventional

Ropeginterferon Alfa-2b (P1101) vs. Anagrelide in Essential Thrombocythemia Patients With Hydroxyurea Resistance or Intolerance

NCT04285086
View directory record Official record
Conditions
Essential Thrombocythemia
Interventions
Ropeginterferon alfa-2b, Anagrelide
Biological · Drug
Lead sponsor
PharmaEssentia
Industry
Eligibility
18 Years and older
Enrollment
174 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2029
U.S. locations
4
States / cities
Scottsdale, Arizona • St Louis, Missouri • Houston, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Jul 22, 2026, 2:00 PM EDT
Active, not recruiting Phase 3 Interventional

A Study of Bomedemstat (IMG-7289/MK-3543) Compared to Best Available Therapy (BAT) in Participants With Essential Thrombocythemia and an Inadequate Response or Intolerance of Hydroxyurea (MK-3543-006)

NCT06079879
View directory record Official record
Conditions
Essential Thrombocythemia
Interventions
Bomedemstat, Anagrelide, Busulfan, Interferon alfa/pegylated interferon alfa 2a/pegylated interferon alfa 2b, Ruxolitinib
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years and older
Enrollment
340 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
16
States / cities
Glendale, Arizona • Glendale, California • Stanford, California + 13 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Jul 22, 2026, 2:00 PM EDT
Not listed Phase 2 Interventional

Study of KRT-232 or TL-895 in Janus Associated Kinase Inhibitor Treatment-Naïve Myelofibrosis

NCT04878003
View directory record Official record
Conditions
Primary Myelofibrosis (PMF), Post-Polycythemia Vera Myelofibrosis (Post-PV-MF), Post-Essential Thrombocythemia Myelofibrosis (Post-ET-MF)
Interventions
KRT-232, TL-895
Drug
Lead sponsor
Kartos Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
4
States / cities
Glendale, California • Whittier, California • Canton, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated May 8, 2022 · Synced Jul 22, 2026, 2:00 PM EDT
Completed No phase listed Observational

Myelofibrosis and Essential Thrombocythemia Observational Study (MOST)

NCT02953704
View directory record Official record
Conditions
MPN (Myeloproliferative Neoplasms)
Interventions
Not listed
Lead sponsor
Incyte Corporation
Industry
Eligibility
18 Years and older
Enrollment
1,469 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
114
States / cities
Huntsville, Alabama • Tempe, Arizona • Tucson, Arizona + 111 more
Source: ClinicalTrials.gov public record
Updated May 12, 2022 · Synced Jul 22, 2026, 2:00 PM EDT
Completed Phase 2 Interventional Results available

Study of SB939 in Subjects With Myelofibrosis

NCT01200498
View directory record Official record
Conditions
Myeloproliferative Disorders
Interventions
SB939
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 29, 2014 · Synced Jul 22, 2026, 2:00 PM EDT
Recruiting Phase 2 Interventional

MethoTRExATE in MyelOpRolifErative Neoplasms (TREATMORE) Trial

NCT06541249
View directory record Official record
Conditions
Polycythemia Vera (PV), Essential Thrombocythemia (ET), Myelofibrosis (MF)
Interventions
Methotrexate (MTX)
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 16, 2025 · Synced Jul 22, 2026, 2:00 PM EDT
Completed Phase 2 Interventional Results available

LCL161 in Treating Patients With Primary Myelofibrosis, Post-Polycythemia Vera Myelofibrosis, or Post-Essential Thrombocytosis Myelofibrosis

NCT02098161
View directory record Official record
Conditions
Polycythemia Vera, Post-Polycythemic Myelofibrosis Phase, Primary Myelofibrosis, Secondary Myelofibrosis
Interventions
Laboratory Biomarker Analysis, Questionnaire Administration, Smac Mimetic LCL161
Other · Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2022
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 5, 2023 · Synced Jul 22, 2026, 2:00 PM EDT
Completed Phase 2 Interventional

Study With SAR302503 in Patients With Polycythemia Vera or Essential Thrombocythemia

NCT01420783
View directory record Official record
Conditions
Hematopoietic Neoplasm
Interventions
SAR302503
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years and older
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
8
States / cities
Scottsdale, Arizona • La Jolla, California • Los Angeles, California + 5 more
Source: ClinicalTrials.gov public record
Updated Mar 4, 2025 · Synced Jul 22, 2026, 2:00 PM EDT
Recruiting Phase 1 Interventional

Mutant CALR-peptide Based Vaccine in Patients With Mutated CALR Myeloproliferative Neoplasm

NCT05025488
View directory record Official record
Conditions
Myelofibrosis, Essential Thrombocythemia, MPN
Interventions
Peptide-based vaccine, Poly ICLC
Drug
Lead sponsor
Marina Kremyanskaya
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 5, 2025 · Synced Jul 22, 2026, 2:00 PM EDT
Terminated Phase 1 Interventional

A Study of TAS1553 in Subjects With Relapsed or Refractory Acute Myeloid Leukemia (AML) and Other Myeloid Neoplasms

NCT04637009
View directory record Official record
Conditions
Acute Myeloid Leukemia, Myeloproliferative Neoplasm, Myelodysplastic/Myeloproliferative Neoplasm
Interventions
TAS1553
Drug
Lead sponsor
Astex Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
8
States / cities
Birmingham, Alabama • Scottsdale, Arizona • Los Angeles, California + 5 more
Source: ClinicalTrials.gov public record
Updated Aug 1, 2024 · Synced Jul 22, 2026, 2:00 PM EDT
Not listed Phase 2Phase 3 Interventional

KRT-232 Versus Best Available Therapy for the Treatment of Subjects With Myelofibrosis Who Are Relapsed or Refractory to JAK Inhibitor Treatment

NCT03662126
View directory record Official record
Conditions
Primary Myelofibrosis (PMF), Post-Polycythemia Vera MF (Post-PV-MF), Post-Essential Thrombocythemia MF (Post-ET-MF)
Interventions
KRT-232, Best Available Therapy (BAT)
Drug
Lead sponsor
Kartos Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
385 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
19
States / cities
Birmingham, Alabama • Los Angeles, California • Stanford, California + 14 more
Source: ClinicalTrials.gov public record
Updated Apr 27, 2023 · Synced Jul 22, 2026, 2:00 PM EDT
Terminated Early Phase 1 Interventional

CPAP in Treating Obstructive Sleep Apnea in Patients With Polycythemia Vera or Essential Thrombocythemia

NCT03972943
View directory record Official record
Conditions
CALR Gene Mutation, Essential Thrombocythemia, JAK2 Gene Mutation, MPL Gene Mutation, Obstructive Sleep Apnea Syndrome, Polycythemia Vera
Interventions
Continuous Positive Airway Pressure, Patient Observation, Questionnaire Administration
Procedure · Other
Lead sponsor
University of Utah
Other
Eligibility
30 Years to 85 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
2
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jan 7, 2024 · Synced Jul 22, 2026, 2:00 PM EDT
Completed Phase 2 Interventional

Open Label Study to Evaluate the Activity of Imetelstat in Patients With Essential Thrombocythemia or Polycythemia Vera

NCT01243073
View directory record Official record
Conditions
Essential Thrombocythemia, Polycythemia Vera
Interventions
Imetelstat
Drug
Lead sponsor
Geron Corporation
Industry
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
6
States / cities
Duarte, California • Orlando, Florida • Chicago, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Jan 25, 2016 · Synced Jul 22, 2026, 2:00 PM EDT
Terminated Phase 2 Interventional Results available

HSP90 Inhibitor, AUY922, in Patients With Primary Myelofibrosis (PMF), Post-Polycythemia Vera Myelofibrosis (Post-PV MF), Post-Essential Thrombocythemia Myelofibrosis (Post-ET MF), and Refractory PV/ET

NCT01668173
View directory record Official record
Conditions
Myeloproliferative Neoplasms
Interventions
AUY922
Drug
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 22, 2016 · Synced Jul 22, 2026, 2:00 PM EDT
Terminated Phase 2 Interventional Results available

A Study to Evaluate Safety and Efficacy of Panobinostat in Participants With Primary Myelofibrosis

NCT00931762
View directory record Official record
Conditions
Primary Myelofibrosis, Post-Polycythemia Vera, Post-Essential Thrombocytopenia
Interventions
Panobinostat
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
9
States / cities
Scottsdale, Arizona • Duarte, California • Stanford, California + 6 more
Source: ClinicalTrials.gov public record
Updated Jul 29, 2021 · Synced Jul 22, 2026, 2:00 PM EDT
Terminated Phase 2 Interventional Results available

Single-Arm Study of the Efficacy and Safety of Oral Rigosertib in Patients With Myelofibrosis (MF) and Anemia

NCT02730884
View directory record Official record
Conditions
Leukemia, Myelofibrosis, Anemia, Splenomegaly
Interventions
Rigosertib, Questionnaire
Drug · Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 6, 2020 · Synced Jul 22, 2026, 2:00 PM EDT
Active, not recruiting Phase 2 Interventional

Extended Access of Momelotinib in Adults With Myelofibrosis

NCT03441113
View directory record Official record
Conditions
Neoplasms, Post-polycythemia Vera Myelofibrosis (Post-PV MF), Primary Myelofibrosis (PMF), Post-essential Thrombocythemia Myelofibrosis (Post-ET MF), Primary Myelofibrosis
Interventions
MMB
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
237 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2026
U.S. locations
14
States / cities
Scottsdale, Arizona • Orange, California • Stanford, California + 11 more
Source: ClinicalTrials.gov public record
Updated Jun 17, 2026 · Synced Jul 22, 2026, 2:00 PM EDT
Completed Phase 3 Interventional Results available

A Study of Momelotinib Versus Danazol in Symptomatic and Anemic Myelofibrosis Participants (MOMENTUM)

NCT04173494
View directory record Official record
Conditions
Primary Myelofibrosis, Post-polycythemia Vera Myelofibrosis, Post-essential Thrombocythemia Myelofibrosis
Interventions
Momelotinib, Placebo to match danazol, Danazol, Placebo to match momelotinib
Drug
Lead sponsor
Sierra Oncology LLC - a GSK company
Industry
Eligibility
18 Years and older
Enrollment
195 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
17
States / cities
Phoenix, Arizona • Irvine, California • Los Angeles, California + 14 more
Source: ClinicalTrials.gov public record
Updated Oct 31, 2023 · Synced Jul 22, 2026, 2:00 PM EDT
Terminated Phase 1 Interventional

Evaluation of Ruxolitinib in Combination With PU-H71 for Treatment of Myelofibrosis

NCT03373877
View directory record Official record
Conditions
Myelofibrosis, Primary Myelofibrosis, Post-polycythemia Vera Myelofibrosis, Post-essential Thrombocythemia Myelofibrosis
Interventions
PU-H71, Ruxolitinib
Drug
Lead sponsor
Samus Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
10
States / cities
New Haven, Connecticut • New Orleans, Louisiana • Ann Arbor, Michigan + 7 more
Source: ClinicalTrials.gov public record
Updated Nov 14, 2022 · Synced Jul 22, 2026, 2:00 PM EDT
Terminated Phase 1 Interventional

Assess the Safety, Tolerability Oral PU-H71 in Subjects Taking Ruxolitinib

NCT03935555
View directory record Official record
Conditions
Primary Myelofibrosis (PMF), Post-Polycythemia Vera Myelofibrosis (Post-PV MF), Post-Essential Thrombocythemia Myelofibrosis (Post-ET MF)
Interventions
PU-H71
Drug
Lead sponsor
Samus Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
3
States / cities
Larkspur, California • Los Angeles, California • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 16, 2022 · Synced Jul 22, 2026, 2:00 PM EDT
Completed No phase listed Observational

Molecular Changes and Biomarkers in Chronic Myeloproliferative Disorders

NCT00433862
View directory record Official record
Conditions
Polycythemia Vera, Essential Thrombocytosis, Idiopathic Myelofibrosis, Neutrophils, Chronic Myeloproliferative Disorders
Interventions
Not listed
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
2
States / cities
Washington D.C., District of Columbia • Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 22, 2026, 2:00 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Safety and Tolerability Study of Oral NS-018 in Patients With Primary Myelofibrosis (MF), Post-polycythemia Vera MF or Post-essential Thrombocythemia MF

NCT01423851
View directory record Official record
Conditions
Primary Myelofibrosis, Post-Polycythemia Vera Myelofibrosis, Post-Essential Thrombocythemia Myelofibrosis
Interventions
NS-018
Drug
Lead sponsor
NS Pharma, Inc.
Industry
Eligibility
18 Years and older
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2020
U.S. locations
9
States / cities
Scottsdale, Arizona • San Diego, California • Jacksonville, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Mar 8, 2022 · Synced Jul 22, 2026, 2:00 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Open Label Ruxolitinib (INCB018424) in Patients With Myelofibrosis and Post Polycythemia Vera/Essential Thrombocythemia Myelofibrosis

NCT00509899
View directory record Official record
Conditions
Myelofibrosis, Polycythemia Vera, Thrombocytosis
Interventions
Ruxolitinib
Drug
Lead sponsor
Incyte Corporation
Industry
Eligibility
18 Years and older
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2017
U.S. locations
2
States / cities
Rochester, Minnesota • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 11, 2018 · Synced Jul 22, 2026, 2:00 PM EDT
Recruiting Phase 1Phase 2 Interventional

Open Label Phase 1/2 Study of Tasquinimod in Patients With Primary Myelofibrosis (PMF), Post-Polycythemia Vera Myelofibrosis (Post-PV MF), or Post-Essential Thrombocytosis Myelofibrosis (Post-ET MF)

NCT06327100
View directory record Official record
Conditions
Primary Myelofibrosis, Post-polycythemia Vera Myelofibrosis, Post-Essential Thrombocytosis Myelofibrosis
Interventions
Ruxolitinib, Tasquinimod
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2031
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 25, 2026 · Synced Jul 22, 2026, 2:00 PM EDT