MyelofibrosisHHMNCT06674382
Haplo-HSCT for Myelofibrosis
A study testing Haploidentical hematopoietic stem cell transplantation in people with Myelofibrosis, run by Peking University People's Hospital at 1 site in China.
Trial summary
Myelofibrosis (MF) is a myeloproliferative neoplasm causing bone marrow failure and high risk of leukemia transformation. JAK2 inhibitors improve symptoms but do not cure MF. Allogeneic stem cell transplantation (allo-HSCT) is the only potential cure, though limited donor availability restricts access. Read more about this study
- Who is it for?
- Any age
- Conditions the study is for
- Myelofibrosis
- What is being tested?
- Haploidentical hematopoietic stem cell transplantation
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 39 participants
- Where
- 1 siteChina
- Study dates
- 1 Jan 2024to 31 Dec 2027
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Who may be able to join
- Primary disease type: Myelofibrosis (including primary myelofibrosis and myelofibrosis secondary to polycythemia vera or essential thrombocythemia).
- No matched sibling donor or unrelated donor, with the availability of a haploidentical donor.
- Signed informed consent.
Who cannot join
- Active infection
- Very poor performance status (ECOG score > 2)
- Estimated survival time < 30 days
- Patient or family unable to cooperate
- Considered unsuitable after discussion
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
China1 site, 1 recruiting
- Recruiting
Peking University People's Hospital
Beijing
Yuqian Sun, MD
About this study
Official title: Haploidentical Hematopoietic Stem Cell Transplantation for the Treatment of Myelofibrosis: A Prospective, Single-center Study
Myelofibrosis (MF) is a myeloproliferative neoplasm causing bone marrow failure and high risk of leukemia transformation. JAK2 inhibitors improve symptoms but do not cure MF. Allogeneic stem cell transplantation (allo-HSCT) is the only potential cure, though limited donor availability restricts access. Haploidentical transplantation shows promise but associated with higher graft failure and treatment related mortality. We recently developed a novel regimen of haplo-SCT for MF. This study aims to investigate this novel protocol in a prospective trial to improve MF outcomes.
Read the detailed description
Myelofibrosis (MF) is a myeloproliferative neoplasm characterized by clonal proliferation of hematopoietic stem cells, reactive hyperplasia of bone marrow stromal cells, and secondary inflammation and fibrosis, leading to progressive bone marrow failure and a high risk of acute myeloid leukemia transformation, with a median survival of about 6 years. While JAK2 inhibitors like ruxolitinib have been approved to improve symptoms and survival in MF patients, they do not provide a cure. Allogeneic stem cell transplantation (allo-HSCT) remains the only potential cure, but limited availability of matched sibling and unrelated donors often prevents patients from receiving this treatment. Haploidentical stem cell transplantation has shown good efficacy in leukemia but is less studied in MF, possibly due to concerns about graft failure, complications, and high transplant-related mortality. Our team has applied a novel haploidentical transplantation protocol for treating MF, which has shown promising results in preliminary observations. This study aims to further validate the effectiveness of this protocol through a prospective clinical trial, potentially establishing an effective approach for HSCT in MF and improving overall transplant outcomes.
- Conditions
- Myelofibrosis
- Being tested
- Haploidentical hematopoietic stem cell transplantation
- Keywords
- Haplo-HSCT, myelofibrosis, MF
- Medical subject headings
- Primary Myelofibrosis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Haploidentical hematopoietic stem cell transplantationProcedure or surgery
This is a single-arm study in which all patients will undergo haploidentical hematopoietic stem cell transplantation for the treatment of myelofibrosis.
Pre-transplant Evaluation:
Evaluation includes status of primary Disease, donor specific antibodies (DSA), organ function (assessments for heart, liver, lungs, kidneys, and the nervous system), and Spleen size.
Transplantation Protocol:
Conditioning Regimen:
Dac/TT/Bu/Flu/ATG regimen:
Decitabine 100 mg/m², on day -12. Thiotepa (TT) 5 mg/kg/day, on days -11 and -10. Busulfan 0.8 mg/kg body weight, every 6 hours, on days -8 to -6. Fludarabine 30 mg/m², once daily, on days -6 to -2. Anti-thymocyte globulin (ATG) 2.5 mg/kg body weight, once daily, on days -5 to -2.
Transplant Donor: Haploidentical donor. GVHD (Graft-versus-Host Disease) Prophylaxis Regimen: Cyclosporine, mycophenolate mofetil, and short-course methotrexate for GVHD prevention.
Graft:
Target MNC (Mononuclear Cells): 6-8 × 10⁸/kg. Target CD34+ stem cells: 5 × 10⁶/kg
| Study group | Role | What they receive |
|---|---|---|
| Haplo-SCT group | Experimental | Patients in this group will undergo haploidentical hematopoietic stem cell transplantation for the treatment of myelofibrosis. Receives: Procedure: Haploidentical hematopoietic stem cell transplantation |
What is being measured
The primary outcome is the main question the study is designed to answer.
Cumulative incidence of Good graft function at day 60
The cumulative incidence of achieving both neutrophil engraftment and platelet engraftment at day 60 after Hematopoietic stem cell transplantation, independent of transfusion and granulocyte growth factor support, using competing risk model.
Measured: Assessment at 60 days post-transplantation
Secondary outcomes (11)
Transplant-related mortality
TRM is defined as death due to any transplantation-related cause other than disease relapse. Transplant-related mortality will be calculated using a competing risks model.
Measured: From baseline assessment at enrollment to the follow-up assessment at 36 months post-treatment.
overall survival
The time from hematopoietic stem cell transplantation to death from any cause in patients with myelofibrosis. Overall survival will be calculated using the Kaplan-Meier method.
Measured: From baseline assessment at enrollment to the follow-up assessment at 36 months post-treatment.
Cumulative Incidence of Relapse
Relapse was defined as disease recurrence. The criteria for relapse include:
- Increase in age-adjusted cellularity and abnormal M: E ratio.
- Megakaryocytic abnormalities typical of MF (pleomorphism, hyperchromatic, cloud-like nuclei and megakaryocytic clusters).
- Increase in grade of reticulin/collagen fibrosis (it should be borne in mind that the previously formed new bone usually takes a long time to be resorbed/resolved and that this should not therefore be used in grading post-transplant unless its density is significantly greater than the pre-transplant biopsy or there is active evidence of continuing new bone deposition).
Measured: From baseline assessment at enrollment to the follow-up assessment at 36 months post-treatment.
Incidence of GVHD
The incidence refers to the rate at which new cases of GVHD occur within a timeframe. Acute GVHD was classified as symptom presentation before 100 days after alloHCT and chronic GVHD was classified as symptom presentation >100 days after alloHCT. Each organ (skin, liver, and gut) was staged 1 through 4 for Acute (a) GVHD according to modified criteria based on the schema of the Mount Sinai Acute GVHD International Consortium (MAGIC), and patients were also assigned a grade of acute GVHD (I through IV) based on overall severity. Chronic (c) GVHD was graded in accordance with the National Institutes of Health (NIH) Chronic Graft-versus-Host Disease Consensus Criteria.
Measured: From baseline assessment at enrollment to the follow-up assessment at 36 months post-treatment.
Disease-free survival
The time from hematopoietic stem cell transplantation to the first occurrence of disease relapse, progression, or death from any cause in patients with myelofibrosis.
Measured: From baseline assessment at enrollment to the follow-up assessment at 36 months post-treatment.
Neutrophil Engraftment
The time to neutrophil engraftment was defined as the first of three consecutive days with an ANC > 0.5 × 109/L.
Measured: From baseline assessment at enrollment to the follow-up assessment at 60 days post-treatment.
Platelet Engraftment
The time to platelet engraftment was defined as the first of seven consecutive days with a platelet count >20 × 109/L without transfusion support.
Measured: From baseline assessment at enrollment to the follow-up assessment at 60 days post-treatment.
Graft failure
Primary GF is defined by an ANC<0.5×109/l by day +28 following stem cell infusion, Hb <80 g/L and platelets <20×109 /L.Secondary GF is currently defined by EBMT criteria as the presence of an ANC<0.5×109/L occurring after initial engraftment and not related to relapse, infection or drug toxicity.
Measured: From baseline assessment at enrollment to the follow-up assessment at 28 days post-treatment.
Toxicity of conditioning
Toxicity of conditioning within 30 days of Hematopoietic Stem Cell Transplantation (HSCT) can be graded according to Common Terminology Criteria for Adverse Events (CTCAE):
- Grade 1: Mild toxicity that does not require medical intervention.
- Grade 2: Moderate toxicity that may require medical intervention.
- Grade 3: Severe toxicity that requires significant medical intervention, hospitalization, or results in lasting effects.
- Grade 4: Life-threatening toxicity, potentially requiring intensive care.
- Grade 5: Death caused by the toxicity reaction.
Measured: From baseline assessment at enrollment to the follow-up assessment at 30 days post-treatment.
Grade of Bone Fibrosis
The degree of bone marrow fibrosis as assessed by histopathological examination, categorized according to The European Consensus on grading of bone marrow fibrosis in patients with myelofibrosis after hematopoietic stem cell transplantation.
Measured: From baseline assessment at enrollment to the follow-up assessment at 12 months post-treatment.
Spleen Response
The change in spleen size, typically measured by imaging (e.g., ultrasound, CT scan), after hematopoietic stem cell transplantation, categorized as complete response, partial response, or no response according to the response criteria of IWG-MRT and ELN:
- Complete Response (CR): The spleen is no longer palpable or measurable by imaging after treatment, indicating a full resolution of splenomegaly.
- Partial Response (PR): A significant reduction in spleen size, typically defined as a reduction of at least 35% in spleen volume or a decrease in palpable spleen size.
- No Response (NR): No reduction in spleen size, or the spleen size remains stable or worsens.
- Progressive Disease (PD): The spleen increases in size after treatment, indicating worsening of splenomegaly.
Measured: From baseline assessment at enrollment to the follow-up assessment at 12 months post-treatment.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted5 Nov 2024
- Study start1 Jan 2024
- Primary completion31 Dec 2027 (estimated)
- Study completion31 Dec 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (3)Papers the sponsor has linked to this study.
- Other trials for MyelofibrosisStudies of the same condition, open and under way.
- More trials run by Peking University People's HospitalThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 39 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Peking University People's Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Sun Yuqian, Peking University People's Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06674382
- Sponsor's protocol ID
- 2024PHB400-001
- Other IDs
- Peking University
- Acronym
- HHM
- Status last verified
- Sep 2026
- First submitted
- 3 Nov 2024
- Last updated
- 14 Sep 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Polverelli N, Hernandez-Boluda JC, Czerw T, Barbui T, D'Adda M, Deeg HJ, Ditschkowski M, Harrison C, Kroger NM, Mesa R, Passamonti F, Palandri F, Pemmaraju N, Popat U, Rondelli D, Vannucchi AM, Verstovsek S, Robin M, Colecchia A, Grazioli L, Damiani E, Russo D, Brady J, Patch D, Blamek S, Damaj GL, Hayden P, McLornan DP, Yakoub-Agha I. Splenomegaly in patients with primary or secondary myelofibrosis who are candidates for allogeneic hematopoietic cell transplantation: a Position Paper on behalf of the Chronic Malignancies Working Party of the EBMT. Lancet Haematol. 2023 Jan;10(1):e59-e70. doi: 10.1016/S2352-3026(22)00330-1. Epub 2022 Dec 6.
PubMed 36493799Cervantes F, Dupriez B, Passamonti F, Vannucchi AM, Morra E, Reilly JT, Demory JL, Rumi E, Guglielmelli P, Roncoroni E, Tefferi A, Pereira A. Improving survival trends in primary myelofibrosis: an international study. J Clin Oncol. 2012 Aug 20;30(24):2981-7. doi: 10.1200/JCO.2012.42.0240. Epub 2012 Jul 23.
PubMed 22826273Gangat N, Tefferi A. Myelofibrosis biology and contemporary management. Br J Haematol. 2020 Oct;191(2):152-170. doi: 10.1111/bjh.16576. Epub 2020 Mar 20.
PubMed 32196650
Study at a glance
From the registry record, last updated by the sponsor on 14 Sep 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Haploidentical Hematopoietic Stem Cell Transplantation for the Treatment of Myelofibrosis: A Prospective, Single-center Study
- ClinicalTrials.gov ID
- NCT06674382
- Acronym / sponsor ID
- HHM / 2024PHB400-001
- Conditions
- Myelofibrosis
- Keywords
- Haplo-HSCT, myelofibrosis, MF
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 39 participants (estimated)
- Lead sponsor
- Peking University People's HospitalUniversity, hospital or other
- Study start
- 1 Jan 2024 (actual)
- Primary completion
- 31 Dec 2027 (estimated)
- Study completion
- 31 Dec 2027 (estimated)
- First posted
- 5 Nov 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Myelofibrosis (MF) is a myeloproliferative neoplasm causing bone marrow failure and high risk of leukemia transformation. JAK2 inhibitors improve symptoms but do not cure MF. Allogeneic stem cell transplantation (allo-HSCT) is the only potential cure, though limited donor availability restricts access. Haploidentical transplantation shows promise but associated with higher graft failure and treatment related mortality. We recently developed a novel regimen of haplo-SCT for MF. This study aims to investigate this novel protocol in a prospective trial to improve MF outcomes.
Detailed description
Myelofibrosis (MF) is a myeloproliferative neoplasm characterized by clonal proliferation of hematopoietic stem cells, reactive hyperplasia of bone marrow stromal cells, and secondary inflammation and fibrosis, leading to progressive bone marrow failure and a high risk of acute myeloid leukemia transformation, with a median survival of about 6 years. While JAK2 inhibitors like ruxolitinib have been approved to improve symptoms and survival in MF patients, they do not provide a cure. Allogeneic stem cell transplantation (allo-HSCT) remains the only potential cure, but limited availability of matched sibling and unrelated donors often prevents patients from receiving this treatment. Haploidentical stem cell transplantation has shown good efficacy in leukemia but is less studied in MF, possibly due to concerns about graft failure, complications, and high transplant-related mortality. Our team has applied a novel haploidentical transplantation protocol for treating MF, which has shown promising results in preliminary observations. This study aims to further validate the effectiveness of this protocol through a prospective clinical trial, potentially establishing an effective approach for HSCT in MF and improving overall transplant outcomes.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Haplo-SCT group | Experimental | Procedure: Haploidentical hematopoietic stem cell transplantationPatients in this group will undergo haploidentical hematopoietic stem cell transplantation for the treatment of myelofibrosis. |
Who may qualify
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (3 listed)
- Primary disease type: Myelofibrosis (including primary myelofibrosis and myelofibrosis secondary to polycythemia vera or essential thrombocythemia).
- No matched sibling donor or unrelated donor, with the availability of a haploidentical donor.
- Signed informed consent.
Key exclusion criteria (5 listed)
- Active infection
- Very poor performance status (ECOG score > 2)
- Estimated survival time < 30 days
- Patient or family unable to cooperate
- Considered unsuitable after discussion
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Haploidentical hematopoietic stem cell transplantationThis is a single-arm study in which all patients will undergo haploidentical hematopoietic stem cell transplantation for the treatment of myelofibrosis. Pre-transplant Evaluation: Evaluation includes status of primary Disease, donor specific antibodies (DSA), organ function (assessments for heart, liver, lungs, kidneys, and the nervous system), and Spleen size. Transplantation Protocol: Conditioning Regimen: Dac/TT/Bu/Flu/ATG regimen: Decitabine 100 mg/m², on day -12. Thiotepa (TT) 5 mg/kg/day, on days -11 and -10. Busulfan 0.8 mg/kg body weight, every 6 hours, on days -8 to -6. Fludarabine 30 mg/m², once daily, on days -6 to -2. Anti-thymocyte globulin (ATG) 2.5 mg/kg body weight, once daily, on days -5 to -2. Transplant Donor: Haploidentical donor. GVHD (Graft-versus-Host Disease) Prophylaxis Regimen: Cyclosporine, mycophenolate mofetil, and short-course methotrexate for GVHD prevention. Graft: Target MNC (Mononuclear Cells): 6-8 × 10⁸/kg. Target CD34+ stem cells: 5 × 10⁶/kg | Procedure or surgery | Haplo-SCT group |
Primary outcome
Cumulative incidence of Good graft function at day 60
Time frame: Assessment at 60 days post-transplantation
The cumulative incidence of achieving both neutrophil engraftment and platelet engraftment at day 60 after Hematopoietic stem cell transplantation, independent of transfusion and granulocyte growth factor support, using competing risk model.
11 secondary outcomes
Transplant-related mortality
Time frame: From baseline assessment at enrollment to the follow-up assessment at 36 months post-treatment.
overall survival
Time frame: From baseline assessment at enrollment to the follow-up assessment at 36 months post-treatment.
Cumulative Incidence of Relapse
Time frame: From baseline assessment at enrollment to the follow-up assessment at 36 months post-treatment.
Incidence of GVHD
Time frame: From baseline assessment at enrollment to the follow-up assessment at 36 months post-treatment.
Disease-free survival
Time frame: From baseline assessment at enrollment to the follow-up assessment at 36 months post-treatment.
Neutrophil Engraftment
Time frame: From baseline assessment at enrollment to the follow-up assessment at 60 days post-treatment.
Platelet Engraftment
Time frame: From baseline assessment at enrollment to the follow-up assessment at 60 days post-treatment.
Graft failure
Time frame: From baseline assessment at enrollment to the follow-up assessment at 28 days post-treatment.
Toxicity of conditioning
Time frame: From baseline assessment at enrollment to the follow-up assessment at 30 days post-treatment.
Grade of Bone Fibrosis
Time frame: From baseline assessment at enrollment to the follow-up assessment at 12 months post-treatment.
Spleen Response
Time frame: From baseline assessment at enrollment to the follow-up assessment at 12 months post-treatment.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 14 Sep 2026.
- Results publication: PubMed 36493799Polverelli N, Hernandez-Boluda JC, Czerw T, Barbui T, D'Adda M, Deeg HJ, Ditschkowski M, Harrison C, Kroger NM, Mesa R, Passamonti F, Palandri F, Pemmaraju N, Popat U, Rondelli D, Vannucchi AM, Verstovsek S, Robin M, Colecchia A, Grazioli L, Damiani E, Russo D, Brady J, Patch D, Blamek S, Damaj GL, Hayden P, McLornan DP, Yakoub-Agha I. Splenomegaly in patients with primary or secondary myelofibrosis who are candidates for allogeneic hematopoietic cell transplantation: a Position Paper on behalf of the Chronic Malignancies Working Party of the EBMT. Lancet Haematol. 2023 Jan;10(1):e59-e70. doi: 10.1016/S2352-3026(22)00330-1. Epub 2022 Dec 6.
- Results publication: PubMed 22826273Cervantes F, Dupriez B, Passamonti F, Vannucchi AM, Morra E, Reilly JT, Demory JL, Rumi E, Guglielmelli P, Roncoroni E, Tefferi A, Pereira A. Improving survival trends in primary myelofibrosis: an international study. J Clin Oncol. 2012 Aug 20;30(24):2981-7. doi: 10.1200/JCO.2012.42.0240. Epub 2012 Jul 23.
- Results publication: PubMed 32196650Gangat N, Tefferi A. Myelofibrosis biology and contemporary management. Br J Haematol. 2020 Oct;191(2):152-170. doi: 10.1111/bjh.16576. Epub 2020 Mar 20.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Haploidentical hematopoietic stem cell transplantation in people with Myelofibrosis, run by Peking University People's Hospital at 1 site in China.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 14 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Sun Yuqian (861088326666, sunyuqian83@hotmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Cumulative incidence of Good graft function at day 60 (time frame: Assessment at 60 days post-transplantation). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT06674382, which also lists 3 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 14 Sep 2026.