Recruiting
Phase 2

Decitabine with Ruxolitinib, Fedratinib, Pacritinib

Sponsor:

University of Washington

Code:

NCT04282187

Conditions

Acute Myeloid Leukemia

Essential Thrombocythemia

Myelodysplastic Syndrome

Myelodysplastic/Myeloproliferative Neoplasm

Myeloproliferative Neoplasm

Eligibility Criteria

Sex: All

Age: 18+

Healthy Volunteers: Not accepted

Interventions

Decitabine

Ruxolitinib

Fedratinib

Questionnaire Administration

Pacritinib

Study Details

Brief summary:

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.

Conditions

Acute Myeloid Leukemia

Essential Thrombocythemia

Myelodysplastic Syndrome

Myelodysplastic/Myeloproliferative Neoplasm

Myeloproliferative Neoplasm

Study ID

NCT04282187

Start date

Mar 24, 2020

Status verified date

Sep, 2026

Completion date

Nov 11, 2027

Anticipated

Primary completion date

Nov 11, 2027

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 18+

Healthy Volunteers: Not accepted

Inclusion Criteria:

  • Age >= 18 years
  • History of MPN as defined by the 2016 World Health Organization criteria, with now pathologically confirmed >= 5% blasts in the bone marrow or peripheral blood. Prior MPNs could include polycythemia vera, essential thrombocythemia, primary myelofibrosis, secondary myelofibrosis, MPN unclassifiable, MDS/MPN overlap
  • Outside diagnostic material is acceptable as long as peripheral blood and/or bone marrow slides are reviewed at the study institution by pathology. Flow cytometric analysis of peripheral blood and/or bone marrow should be performed according to institutional practice guidelines
  • Eastern Cooperative Oncology Group (ECOG) performance status 0-2 or Karnofsky >= 60%
  • Serum creatinine clearance >= 50 ml/min calculated by the Cockcroft-Gault Equation (assessed within 14 days of study day 1)
  • Total bilirubin =< 3 unless due to Gilbert's disease or hemolysis (total bilirubin > 3 is allowable if thought due to Gilbert's disease, hemolysis, or MPN disease) (assessed within 14 days of study day 1)
  • Aspartate aminotransferase (AST)/alanine aminotransferase (ALT) < 3 x upper limit of normal (ULN) unless thought to be due to MPN disease process (AST/ALT > 3 is allowable if thought due to MPN disease) (assessed within 14 days of study day 1)
  • For patient receiving fedratinib, thiamine level should be above the laboratory lower limit of normal (>= 70 nmol/L in the University of Washington \[UW\]/Seattle Cancer Care Alliance \[SCCA\] lab). If it is low, it may be repleted but should be rechecked and demonstrated to normalize prior to initiation of therapy
  • Patient is considered a potential transplant candidate. The attending/treating physician will determine transplant candidacy at the time of consent
  • The use of hydroxyurea prior to study registration is allowed. Patients with symptoms/signs of hyperleukocytosis, white blood count (WBC) > 100,000/uL, or with concern for other complications of high tumor burden or leukostasis (e.g. hypoxia, disseminated intravascular coagulation) can be treated with leukapheresis or may receive up to 2 doses of cytarabine (up to 500 mg/m\^2 /dose) anytime prior to enrollment
  • Capable of providing valid informed consent

Exclusion Criteria:

  • Previous treatment with chemotherapy (e.g. hypomethylating agents or cytarabine-based regimens) for MPN with >= 5% blasts in the blood or marrow. Prior temporary measures to control blood counts is allowed. Prior treatment with hydroxyurea, interferons or JAK inhibitor therapy is allowed
  • Active systemic fungal, bacterial, viral, or other infection, unless disease is under treatment with anti-microbials and/or controlled or stable (e.g. if specific, effective therapy is not available/feasible or desired \[e.g. chronic viral hepatitis, human immunodeficiency virus (HIV)\])
  • Known hypersensitivity to any study drug
  • Females who are pregnant or breastfeeding
  • Treatment with any other anti-MDS/leukemia investigational agent within 2 weeks of start of study drugs
  • For patients planning to receive fedratinib: concurrent use of strong and moderate CYP3A4 inducers or dual CYP3A4 and CYP2C19 inhibitors that cannot be discontinued
  • For patients planned to receive ruxolitinib AND platelets < 50,000/mm\^2: concurrent use of a strong CYP3A4 inhibitor that cannot be discontinued
  • For patients planned to receive pacritinib, corrected QT interval (QTc) > 480 msec (changing of medications/supplementing electrolytes is allowed to determine if this helps QTc reduce to < 480 msec)
  • For patients planned to receive pacritinib, concurrent use of medications that are CYP1A2, CYP3A4, P-gp, BCRP, OCT1 substrates that cannot be discontinued

Study Design

Enrollment

25 participants

Anticipated

Intervention Model

Single group

Primary purpose

Treatment

Interventions and Outcome Measures

Arms

experimental: Treatment (decitabine, ruxolitinib, fedratinib, pacritinib)

Patients receive decitabine IV QD over 1 hour on days 1-10, and either ruxolitinib PO BID, fedratinib PO daily, or pacritinib PO BID on days 1-28. Treatment repeats every 28 days for up to 6 cycles in the absence of disease progression or unacceptable toxicity. Patients also undergo collection of blood and bone marrow samples throughout the trial.

Interventions

Decitabine

Given IV

Ruxolitinib

Given PO

Fedratinib

Given PO

Questionnaire Administration

Ancillary studies

Pacritinib

Given PO

Biospecimen Collection

Undergo collection of blood and bone marrow samples

Primary outcome measure

  • Proportion of patients enrolled who receive hematopoietic stem cell transplantation (HCT) [ Time Frame: Up to 5 years ]

Central Contacts and Locations

Central contacts

Noah Pinke

206-606-4942ntpinke@fredhutch.org

Locations

Fred Hutch/University of Washington Cancer Consortium

Recruiting

Seattle, Washington, United States, 98109

Contacts

Noah Pinke

206-606-4942ntpinke@fredhutch.org

Principal Investigator:

Anna Halpern

More Information

Sponsor

University of Washington

Last update posted

Sep 17, 2026

Last verified

Sep, 2026

Keywords

  • Myeloid and Monocytic Leukemia
  • Other Hematopoietic

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-27. This information was provided to ClinicalTrials.gov by University of Washington on 2026-09-17. Recruitment status is synced daily from ClinicalTrials.gov and may not reflect the sponsor's current status. Confirm during your call.