Primary Myelofibrosis

22

Review clinical trials related to Primary Myelofibrosis. Use filters to narrow results by trial status, phase, treatment, biological sex and sponsor.

Condition / disease
Location
Status: Recruiting

Research Platform Myelofibrosis and Anemia

The purpose of the project is to set up a national, prospective, longitudinal, multicenter cohort study, a tumor research platform, to document uniform data on characteristics, molecular diagnostics, treatment and course of disease and to collect patient-reported outcomes for patients with primary and secondary myelofibrosis and anemia in Germany.

Participants needed: 200
Trial details
Age: 18+Biological sex: AllType: ObservationalSponsor: iOMEDICO AGUpdated: Jun 5, 2026Locations: 1
Eligibility criteria

Confirmed diagnosis of primary or secondary (post-polycythemia vera or post-esse... [+5]

No systemic therapy for diagnosed primary or secondary MF. [+1]

Status: Recruiting

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)

To learn if tasquinimod either alone or in combination with ruxolitinib can help to control PMF, post-PV MF, or post-ET MF.

Participants needed: 33
Trial details
Phase: Phase 1, Phase 2Age: 18+Biological sex: AllType: InterventionalSponsor: M.D. Anderson Cancer CenterUpdated: May 26, 2026Locations: 1
Eligibility criteria

Must be diagnosed with treatment requiring PMF or post ET/PV MF diagnosed accord... [+12]

For women of childbearing potential, a documented negative serum or urine pregna... [+31]

Status: Recruiting

Study of DISC-0974 (RALLY-MF) in Participants With Myelofibrosis or Myelodysplastic Syndrome and Anemia

This phase 1b/2a open-label study will assess the safety, tolerability, pharmacokinetics and pharmacodynamics of DISC-0974 as well as categorize the effects on anemia response in subjects with myelofibrosis or myelodysplastic syndrome and anemia.

Participants needed: 150
Trial details
Phase: Phase 1, Phase 2Age: 18+Biological sex: AllType: InterventionalSponsor: Disc Medicine, IncUpdated: May 13, 2026Locations: 25
Eligibility criteria

Age 18 years or older at the time of signing the informed consent form (ICF). [+60]

Hereditary hemochromatosis [+55]

Status: Recruiting

A Phase 1 Study of AJ1-11095 in Patients With Primary Myelofibrosis (PMF), Post-Polycythemia Vera Myelofibrosis (PPV-MF), or Post-Essential Thrombocythemia Myelofibrosis (PET-MF) Who Have Been Failed by a Type I JAK2 Inhibitor (JAK2i)

AJX-101 is a first-in-human (FIH), phase 1, non-randomized, multi-center, open-label clinical trial designed to investigate the safety, tolerability, pharmacokinetics (PK), clinical activity and changes in biomarkers of an orally administered type II JAK2 inhibitor, AJ1-11095, in subjects with primary or secondary myelofibrosis previously treated with at least one type I JAK2 inhibitor.

Participants needed: 76
Trial details
Phase: Phase 1Age: 18+Biological sex: AllType: InterventionalSponsor: Ajax Therapeutics, Inc.Updated: May 12, 2026Locations: 21
Eligibility criteria

18 years of age or older. [+12]

Prior splenectomy. [+11]

Status: Recruiting

Study of Momelotinib in Combination With Luspatercept in Participants With Transfusion Dependent Myelofibrosis

The purpose of this Phase 2 study is to evaluate the efficacy and safety of momelotinib (MMB) in combination with luspatercept (LUSPA) in participants with transfusion dependence (TD) primary myelofibrosis (PMF) or Post-polycythemia vera (PV)/ essential thrombocythemia (ET) myelofibrosis (MF) who are either janus kinase (JAK) inhibitor (JAKi) naïve or experienced.

Participants needed: 68
Trial details
Phase: Phase 2Age: 18+Biological sex: AllType: InterventionalSponsor: GlaxoSmithKlineUpdated: Apr 20, 2026Locations: 33
Eligibility criteria

Is age ≥18 years. [+4]

History of intestinal disease, inflammatory bowel disease, major gastric surgery... [+29]

Status: Recruiting

UAB 2419-CD34 Selection Using the Automated CliniMACS Prodigy

Patients with graft failure or delayed engraftment may benefit from a hematopoietic stem cell boost or an additional hematopoietic stem cell transplantation procedure. In such settings standard immune suppression strategies are avoided due to their myelosuppressive nature. Therefore those patients are at increased risk of graft versus host disease, and the infusion of a CD34 selected graft would reduce such a risk. The infusion of CD34 selected graft using CliniMACS plus is currently FDA FDA-approved indication for acute myeloid leukemia. However, the use of the Prodigy would streamline the processing, in terms of hands-off procedure, allowing to provision of this product to the patients without strains on the cell therapy lab team. This procedure has been demonstrated safe and effective in several single-center studies and is currently in advanced phase investigation in several studies for malignant and non-malignant conditions.

Participants needed: 50
Trial details
Phase: Phase 1Age: 4-75Biological sex: AllType: InterventionalSponsor: University of Alabama at BirminghamUpdated: Apr 13, 2026Locations: 1
Eligibility criteria

AML in morphologic remission with intermediate/high-risk features or relapsed di... [+5]

Non-compliant patients. [+4]

Status: Recruiting

A Study to Evaluate Safety and Efficacy of Bomedemstat (MK-3543-017)

The primary purpose of the study is to transition participants into an extension study to collect long-term safety and efficacy data. The study will include participants who are safely tolerating bomedemstat, receiving clinical benefit from its use in estimation of the investigator, and have shown the following criteria: * Participants from the IMG-7289-202/MK-3543-005 (NCT05223920) study must have received at least 6 months of treatment with bomedemstat; * Essential thrombocythemia (ET) and polycythemia vera (PV) participants from studies other than IMG-7289-202/MK-3543-005 must have achieved confirmed hematologic remission. No hypothesis testing will be conducted in this study.

Participants needed: 400
Trial details
Phase: Phase 3Age: 18+Biological sex: AllType: InterventionalSponsor: Merck Sharp & Dohme LLCUpdated: Apr 2, 2026Locations: 21
Eligibility criteria

Is from a bomedemstat study sponsored by Imago BioSciences, Inc. (a subsidiary o... [+4]

Has received prohibited concomitant medications [+2]

Status: Recruiting

Decitabine With Ruxolitinib, Fedratinib or Pacritinib for the Treatment of Accelerated/Blast Phase Myeloproliferative Neoplasms

This phase II trial studies how well decitabine with ruxolitinib, fedratinib, or pacritinib works before hematopoietic stem cell transplant in treating patients with accelerated/blast phase myeloproliferative neoplasms (tumors). Drugs used in chemotherapy, such as decitabine, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Ruxolitinib, fedratinib, and pacritinib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Giving chemotherapy before a donor hematopoietic stem cell transplant helps stop the growth of cells in the bone marrow, including normal blood-forming cells (stem cells) and cancer cells. When the healthy stem cells from a donor are infused into the patient they may help the patient's bone marrow make stem cells, red blood cells, white blood cells, and platelets. The donated stem cells may also replace the patient's immune cells and help destroy any remaining cancer cells. Decitabine, with ruxolitinib, fedratinib, or pacritinib may work better than multi-agent chemotherapy or no pre-transplant therapy, in treating patients with accelerated/blast phase myeloproliferative neoplasms.

Participants needed: 25
Trial details
Phase: Phase 2Age: 18+Biological sex: AllType: InterventionalSponsor: University of WashingtonUpdated: Mar 16, 2026Locations: 1
Eligibility criteria

Age >= 18 years [+10]

Previous treatment with chemotherapy (e.g. hypomethylating agents or cytarabine-... [+8]

Status: Recruiting

Ruxolitinib Before, During and After Hematopoietic Cell Transplant in Older Patients With Myelofibrosis and Myelodysplastic Syndrome/Myeloproliferative Neoplasm Overlap Syndromes

This phase II trial tests the effect of adding ruxolitinib to standard graft versus host disease (GVHD) prevention in treating older patients with myelofibrosis (MF) or myelodysplastic syndrome/myeloproliferative neoplasm (MDS/MPN) overlap syndromes before, during, and after a donor (allogeneic) hematopoietic cell transplant (HCT). Allogeneic HCT is a procedure in which a person receives blood-forming stem cells (cells from which all blood cells develop) from a genetically similar, but not identical donor. Giving chemotherapy, such as cytoxan and busulfan or fludarabine and melphalan, before a donor transplant helps kill cancer cells in the body and helps make room in the patient's bone marrow for new blood-forming cells (stem cells) to grow. However, sometimes the transplanted cells from a donor can attack the body's normal cells (called GVHD). Giving standard prevention (prophylaxis) therapies, such as tacrolimus and methotrexate, after the transplant may stop this from happening. Methotrexate, a type of antifolate, is in a class of medications called antimetabolites. Methotrexate stops cells from using folic acid to make deoxyribonucleic acid and may kill cancer cells. Tacrolimus is used to help reduce the risk of rejection by the body of organ and bone marrow transplants. Ruxolitinib, a type of Janus-associated kinase (JAK) inhibitor, blocks a protein called JAK, which may help keep abnormal blood cells or cancer cells from growing. It may also lower the body's immune response and prevent the development of GVHD. Giving ruxolitinib before, during and after allogeneic HCT in addition to standard GVHD prophylaxis may be safe, tolerable and effective in preventing GVHD and improving outcomes in older patients with MF or MDS/MPN overlap syndrome.

Participants needed: 50
Trial details
Phase: Phase 2Age: 18-75Biological sex: AllType: InterventionalSponsor: Fred Hutchinson Cancer CenterUpdated: Feb 19, 2026Locations: 1
Eligibility criteria

PART 1 JAK INHIBITOR ADMINISTRATION: Age 18-75 years [+23]

PART 1 JAK INHIBITOR ADMINISTRATION: Contraindication to receiving ruxolitinib i... [+20]

Status: Recruiting

Reduced Intensity Haploidentical Transplantation for the Treatment of Primary or Secondary Myelofibrosis

This initial cohort of this phase II trial studied the outcomes of using a JAK inhibitor prior to reduced intensity haploidentical (Haplo) transplantation for the treatment of primary or secondary myelofibrosis (MF). The primary risk of using Haplo HCT in patients with MF is graft failure. In the first cohort, all patients engrafted. There were no instances of graft failure. However, a large number of patients did have graft versus host disease as a complication of their transplant. JAK inhibitors have since been approved for the indication of graft versus host disease treatment. And we are also using them for graft versus host disease prevention in a study of MF patients with sibling and unrelated donors. Therefore, we are opening a new cohort of the current study using the JAK inhibitor prior to, during and after Haplo transplant. Our goal is to decrease graft versus host disease in patients receiving a Haplo MF transplant without increasing the risk of graft failure.

Participants needed: 20
Trial details
Phase: Phase 2Age: 18-70Biological sex: AllType: InterventionalSponsor: Fred Hutchinson Cancer CenterUpdated: Jan 12, 2026Locations: 1
Eligibility criteria

PART 1: JAK INHIBITOR ADMINISTRATION INCLUSION CRITERIA [+20]

PART 1: JAK INHIBITOR ADMINISTRATION EXCLUSION CRITERIA [+14]

Status: Recruiting

Functional and Phenotypic Characterization of Monocytes in Myeloproliferative Syndromes

Prospective study for functional and phenotypic characterization of monocytes in philadelphia-negative myeloproliferative neoplasms

Participants needed: 70
Trial details
Age: 18+Biological sex: AllType: InterventionalSponsor: University Hospital, AngersUpdated: Dec 8, 2025Locations: 3
Eligibility criteria

Diagnosis of PV, ET, pre-myelofibrosis or primary myelofibrosis according to WHO... [+3]

Person not affiliated to a social security scheme or beneficiary of such a schem... [+3]

Status: Recruiting

Study of Navtemadlin add-on to Ruxolitinib in JAK Inhibitor-Naïve Patients With Myelofibrosis Who Have a Suboptimal Response to Ruxolitinib

This clinical trial is evaluating whether addition of navtemadlin to ruxolitinib treatment will provide more clinical benefit than ruxolitinib alone for patients with Myelofibrosis who have a suboptimal response to ruxolitinib treatment alone. Subjects will start by receiving ruxolitinib alone in the run-in period. Those who demostrate a suboptimal response from ruxolitinib alone will then be randomized 2:1 to receive navtemadlin or navtemadlin placebo as add-on treatment to their ongoing ruxolitinib. Randomized means that subjects will be assigned to a group by chance, like a flip of a coin. The study is blinded, meaning the subjects, doctors, central endpoint assessors and sponsor will not know which add on treatment (navtemadlin or navtemadlin placebo) the subject is receiving.

Participants needed: 600
Trial details
Phase: Phase 3Age: 18+Biological sex: AllType: InterventionalSponsor: Kartos Therapeutics, Inc.Updated: Sep 25, 2025Locations: 215
Eligibility criteria

Confirmed diagnosis of PMF, post-PV MF, or post-ET MF, as assessed by the treati... [+3]

Prior Splenectomy [+10]

Status: Recruiting

P1101 in Treating Patients With Early PMF or Overt PMF at Low or Intermediate-1 Risk

This is a phase 3 double-blind clinical trial arm to test Ropeginterferon alfa-2b (P1101) in adult patients with Primary Myelofibrosis (PMF) at early stage or low to medium risk. Participants will receive the study drug/placebo bi-weekly and have an assessment visit every 4 weeks. The ratio of study drug to placebo group is 2:1.

Participants needed: 150
Trial details
Phase: Phase 3Age: 18+Biological sex: AllType: InterventionalSponsor: PharmaEssentiaUpdated: Aug 13, 2025Locations: 1
Eligibility criteria

Male or female patients aged ≥18 years at the time of signing the informed conse... [+7]

Any known contraindications to interferon α or hypersensitivity to interferon α; [+8]

Status: Recruiting

Role of Mesenchymal Stromal Cell Derived Extracellular Vesicles of Primary Myelofibrosis Patients on CD34+ Cells

The aim of this study is to demonstrate that, in patients with myelofibrosis (PMF), a chronic neoplastic disease of the bone marrow, some of the cells that form the bone marrow microenvironment (mesenchymal stromal cells, MSCs) can send wrong messages to the CD34+ hematopoietic progenitor cells (HPCs). CD34+ HPCs in normal conditions reside in the bone marrow until complete maturation; in PMF they leave the bone marrow when they are still progenitor cells and frequently they express the V617F mutation on the JAK2 molecule. In previously published papers, the investigators demonstrated that the MSCs in the bone marrow of patients with PMF are different from those in healthy donors. In this study the investigators want to verify how this difference affects the maturation of CD34+ HPCs of healthy donors and of SET2 cells, a commercially available cell line characterized by the V617F mutation of the JAK2 molecule. In particular, the investigators will verify the effect of MSCs on signals that induce the activation of CD34+ cells, their survival or death, the production of harmful oxidative reagents and their clonal capacity. To obtain these data, the investigators will isolate MSCs from bone marrow blood samples of patients with PMF undergoing bone marrow biopsy for clinical reasons and from healthy subjects, donors of HPCs for transplant. Following a long culture MSCs will be stimulated to release small vescicles containing part of their nuclear and cytoplasmatic molecules. These vescicles will be cultured with CD34+ cells or SET2 cells and their effects will be evaluated. It has been shown that these small vescicles act exactly like MSCs, but they are easier to be used, and could become a very useful acellular drug in the near future.

Participants needed: 10
Trial details
Age: 18+Biological sex: AllType: ObservationalSponsor: Fondazione IRCCS Policlinico San Matteo di PaviaUpdated: Apr 2, 2025Locations: 1
Eligibility criteria

Patients with PMF [+3]

PMF combined to other pathologies [+2]

Status: Recruiting

68Ga-FAPI PET/CT Imaging for Diagnosis, Grading, and Efficacy Evaluation of Myelofibrosis.

To evaluate the diagnostic efficacy of 68Ga FAPI PET/CT in myelofibrosis and to identify fibrosis grades. To evaluate the diagnostic efficacy of 68Ga FAPIPET/CT imaging in patients with myelofibrosis, compared with conventional CT.

Participants needed: 90
Trial details
Age: 18+Biological sex: AllType: ObservationalSponsor: The First Affiliated Hospital of Xiamen UniversityUpdated: Feb 19, 2025Locations: 1
Eligibility criteria

Age ≥18 years old; [+5]

Known allergic history to 68Ga FAPI or its excipients; [+8]

Status: Recruiting

Ruxolitinib in Primary Myelofibrosis and Secondary to Essential Thrombocythemia or Polycythemia Vera

The study is observational multicenter retrospective and prospective cohort study of patients with primary or secondary myelofibrosis who have initiated therapy with ruxolitinib, prescribed as part of the normal course of care and completely independent of study participation. The primary purpose is to determine the impact of clinical and laboratory characteristics of myelofibrosis on the prognosis of patients treated with ruxolitinib, understood as long-term survival.

Participants needed: 1,055
Trial details
Age: 18+Biological sex: AllType: ObservationalSponsor: IRCCS Azienda Ospedaliero-Universitaria di BolognaUpdated: Dec 5, 2024Locations: 26Duration: 10 Years
Eligibility criteria

Age ≥ 18 years [+3]

None

Status: Recruiting

A Post-Marketing Surveillance Study to Assess the Safety of Fedratinib in Korean Patients With Myelofibrosis

The purpose of this study is to assess the real-world safety of fedratinib for the treatment of adult participants with primary myelofibrosis (PMF), post polycythemia vera myelofibrosis (post-PV MF), or post essential thrombocythemia myelofibrosis (post-ET MF) who were previously treated with ruxolitinib. Participants will represent the overall patient population with PMF, post-PV MF or post-ET MF who lost adequate response to and/or are intolerant to ruxolitinib. Inadequate response definitions will follow Ministry of Food and Drug Safety-approved label and reimbursement criteria of the Health Insurance Review \& Assessment Service.

Participants needed: 137
Trial details
Age: 19+Biological sex: AllType: ObservationalSponsor: Bristol-Myers SquibbUpdated: Nov 6, 2024Locations: 3
Eligibility criteria

Participants 19 years of age or older [+3]

Participants who have been prescribed fedratinib for an indication not approved... [+2]

Status: Recruiting

Myeloproliferative Neoplasms (MPNs) Patient Registry

The mandate of this MPN registry is to collect clinical information, including molecular results, from consenting patients with a variety of MPNs at different time points during the course of their disease.

Participants needed: 5,000
Trial details
Biological sex: AllType: ObservationalSponsor: University Health Network, TorontoUpdated: Aug 27, 2024Locations: 1Duration: 10 Years
Eligibility criteria

Atypical CML (aCML) [+11]

None

Status: Recruiting

Myeloproliferative Neoplastic Diseases Observatory From Brest

All patients diagnosed or followed in Brest University Hospital for Philadelphia negative myeloproliferative neoplasms will be included in this observational study. Myeloproliferative neoplasms recorded included: polycythemia vera, essential Thrombocythemia and Primary Myelofibrosis. This is a not interventional study. Alive patients need to sign a non-opposition consent form. Patients will be followed until last news (death, change of reference centre...).

Participants needed: 1,000
Trial details
Biological sex: AllType: ObservationalSponsor: University Hospital, BrestUpdated: Aug 12, 2024Locations: 1
Eligibility criteria

Patients with essentiel thrombocythemia, polycythemia vera or primary myelofibro... [+1]

None

Status: Recruiting

Pacritinib w/ Talazoparib in Pts w/ Myeloproliferative Neoplasms Unresponsive to JAK2 Inhibition

This is a prospective phase I dose-escalation study, with the primary objective to access the MTD and find the RP2D of talazoparib, given in combination with standard of care dosing of pacritinib.

Participants needed: 24
Trial details
Phase: Phase 1Age: 18+Biological sex: AllType: InterventionalSponsor: Fox Chase Cancer CenterUpdated: May 3, 2024Locations: 1
Eligibility criteria

Patients must have histologically or cytologically confirmed primary myelofibros... [+8]

Patients may not be receiving any other investigational agents [+6]

Status: Recruiting

Asian Myeloproliferative Neoplasm (MPN) Registry

This is a multinational, multicenter, prospective and retrospective, observational, cohort study of patients with myeloproliferative neoplasm.

Participants needed: 1,000
Trial details
Age: 18+Biological sex: AllType: ObservationalSponsor: The University of Hong KongUpdated: May 31, 2023Locations: 1Duration: 10 Years
Eligibility criteria

Age ≥ 18 years old at the time of diagnosis of MPN. [+8]

Status: Recruiting

Study of TL-895 Combined With Ruxolitinib in JAKi Treatment-Naïve MF Subjects and Subjects With MF Who Have a Suboptimal Response to Ruxolitinib

This study evaluates TL-895, a potent, orally-available and highly selective irreversible tyrosine kinase inhibitor for the treatment of Myelofibrosis. Participants must have MF (PMF, Post PV MF, or Post ET MF) who are JAKi treatment-naïve or those who have a suboptimal response to ruxolitinib.

Participants needed: 70
Trial details
Phase: Phase 1, Phase 2Age: 18+Biological sex: AllType: InterventionalSponsor: Telios Pharma, Inc.Updated: Feb 21, 2023Locations: 19
Eligibility criteria

Treatment with at a stable dose of ruxolitinib prior to study entry [+6]

Prior treatment with any JAKi [+3]