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Adding Itacitinib to Cyclophosphamide and Tacrolimus for the Prevention of Graft Versus Host Disease in Patients Undergoing Hematopoietic Stem Cell Transplants

Single Center Pilot Study to Investigate the Efficacy of Adding Itacitinib to Post-Transplant Cyclophosphamide as Graft-Versus-Host Disease Prophylaxis After Reduced Intensity Conditioning Matched Donor Hematopoietic Cell Transplantation With Peripheral Blood Stem Cells as Graft Source

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05364762
Enrollment
20
Registered
2022-05-06
Start date
2022-11-23
Completion date
2027-03-25
Last updated
2026-06-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Acute Lymphoblastic Leukemia, Acute Myeloid Leukemia, Chronic Myelomonocytic Leukemia, Myelodysplastic Syndrome, Myeloproliferative Neoplasm, Primary Myelofibrosis, Secondary Myelofibrosis

Brief summary

This clinical trial evaluates the safety and effectiveness of adding itacitinib to cyclophosphamide and tacrolimus for the prevention of graft versus host disease (GVHD) in patients undergoing hematopoietic stem cell transplant. Itacitinib is an enzyme inhibitor that may regulate the development, proliferation, and activation of immune cells important for GVHD development. Cyclophosphamide and tacrolimus are immunosuppressive agents that may prevent GVHD in patients who receive stem cell transplants. Giving itacitinib in addition to cyclophosphamide and tacrolimus may be more effective at preventing GVHD in patients receiving hematopoietic stem cell transplants.

Detailed description

PRIMARY OBJECTIVES: I. Safety lead-in: Determine if shortening tacrolimus administration period to 60 days (day +65 post-hematopoietic cell transplantation \[HCT\]), when combined with post-transplant cyclophosphamide (PTCy) and itacitinib at a fixed dose level as graft-versus-host disease (GVHD) prophylaxis, is safe and effective after mobilized peripheral blood stem cell (PBSC) allogeneic hematopoietic cell transplantation (HCT) from a matched related/unrelated donor, as assessed by grade 3-4 GVHD as dose limiting toxicity. II. Following the safety lead-in, evaluate the efficacy of PTCy, itacitinib and tacrolimus GVHD prophylaxis, as assessed by 1-year GVHD-free relapse-free survival (GRFS). SECONDARY OBJECTIVES: I. Evaluate the safety of this regimen by assessing: Ia. Adverse events: type, frequency, severity, attribution, time course, duration. Ib. Complications including acute and chronic GVHD, infections and delayed engraftment. II. Estimate overall survival (OS), progression-free survival (PFS), cumulative incidences of relapse/disease progression, and non-relapse mortality (NRM) at 100 days, and 1-year post-transplant. III. Estimate rates of acute and chronic GvHD, infections, and neutrophil recovery. EXPLORATORY OBJECTIVES: I. Donor cell engraftment will be assessed by count monitoring and short tandem repeat (STR) chimerism analysis on days +30 and day +100. II. Describe the kinetics of immune cell recovery. III. Evaluate patient's quality of life on day +100, 6 months and one-year post-HCT. IV. Pharmacokinetics: serial blood sampling will be done to evaluate the steady-state pharmacokinetics of itacitinib after PTCy. V. Describe the kinetics of GVHD biomarkers, JAK-related inflammatory cytokines and STAT phosphorylation. VI. Evaluate and describe the cytokine release syndrome (CRS) post-HCT by assessing the incidence, frequency, and severity of CRS. VII. Obtain a preliminary estimate of gut microbiome diversity at baseline (preferably before fludarabine administration), and then on days +14, +30, and +100. OUTLINE: Patients undergo peripheral blood stem cell infusion on day 0. Patients receive cyclophosphamide intravenously (IV) once daily (QD) on days 3 and 4, itacitinib orally (PO) QD on days 5-100, and tacrolimus IV or PO on days 6-65. After completion of study treatment, patients are followed up at day 180 and 1 year.

Interventions

DRUGCyclophosphamide

Given IV

DRUGItacitinib

Given PO

PROCEDUREPeripheral Blood Stem Cell Transplantation

Undergo peripheral blood stem cell infusion

OTHERQuality-of-Life Assessment

Ancillary studies

DRUGTacrolimus

Given IV or PO

Sponsors

City of Hope Medical Center
Lead SponsorOTHER
National Cancer Institute (NCI)
CollaboratorNIH

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
PREVENTION
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
No minimum to 80 Years
Healthy volunteers
No

Inclusion criteria

* Documented informed consent of the participant and/or legally authorized representative * Assent, when appropriate, will be obtained per institutional guidelines * Agreement to allow the use of archival tissue from diagnostic tumor biopsies * If unavailable, exceptions may be granted with study principal investigator (PI) approval * Age: =\< 80 years * Note: Patients \> 70 years of age must have Karnofsky performance status \>= 80 and HCT-comorbidity index (CI) =\< 2 * Karnofsky performance status \>= 70% * Patients with the following diagnosis, eligible to undergo allogeneic HCT from an 8/8 match related/unrelated donor (A, B, C, DR by high resolution typing) * Acute leukemias (acute myeloid leukemia \[AML\] or acute lymphoblastic leukemia \[ALL\]) in complete remission with bone marrow (BM) blast of \< 5% * Myelofibrosis (MF): Primary or secondary with high- or intermediate-2 risk per Dynamic International Prognostic Scoring System (DIPSS) * Myelodysplastic syndrome (blast \< 10%) * Myeloproliferative neoplasm (MPN) other than MF needing HCT * Chronic myelomonocytic leukemia (CMML) * Total bilirubin =\< 2 x upper limit of normal (ULN) (unless has Gilbert's disease) (within 30 days prior to day 1 of protocol therapy unless otherwise stated) * Serum glutamic-oxaloacetic transaminase (SGOT) and serum glutamate pyruvate transaminase (SGPT) \< 5 x ULN (within 30 days prior to day 1 of protocol therapy unless otherwise stated) * Creatinine clearance of \>= 60 mL/min per 24 hour urine test or the Cockcroft-Gault formula (within 30 days prior to day 1 of protocol therapy unless otherwise stated) * Left ventricular ejection fraction (LVEF) \>= 50% * Note: To be performed within 30 days prior to day 1 of protocol therapy * If able to perform pulmonary function tests: forced expiratory volume in 1 second (FEV1), forced vital capacity (FVC) and diffusion capacity of the lungs for carbon monoxide (DLCO) (diffusion capacity) \>= 50% of predicted (corrected for hemoglobin) (within 30 days prior to day 1 of protocol therapy) * If unable to perform pulmonary function tests: O2 saturation \> 92% on room air (within 30 days prior to day 1 of protocol therapy) * Seronegative for human immunodeficiency virus (HIV) antigen (Ag)/antibody (Ab) combo, hepatitis C virus (HCV), active hepatitis B virus (HBV) (surface antigen negative), and syphilis rapid plasma reagin (RPR) (within 30 days prior to day 1 of protocol therapy) * If positive, hepatitis C ribonucleic acid (RNA) quantitation must be performed OR * If seropositive for HIV, HCV or HBV, nucleic acid quantitation must be performed. Viral load must be undetectable * Meets other institutional and federal requirements for infectious disease titer requirements * Note: Infectious disease testing to be performed within 28 days prior to day 1 of protocol therapy * Women of childbearing potential (WOCBP): negative urine or serum pregnancy test (within 30 days prior to day 1 of protocol therapy) * If the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required * Agreement by females and males of childbearing potential to use an effective method of birth control or abstain from heterosexual activity for the course of the study through at least 6 months after the last dose of protocol therapy * Childbearing potential defined as not being surgically sterilized (men and women) or have not been free from menses for \> 1 year (women only)

Exclusion criteria

* Prior allogeneic HCT * Chemotherapy, radiation therapy, biological therapy, immunotherapy within 21 days prior to day 1 of protocol therapy * Note: Conditioning regimen within 21 days prior to day 1 of protocol therapy is not considered as an exclusion criterion. Patients on maintenance chemotherapy are not excluded * Other investigational drugs for treatment of GVHD * History of allergic reactions attributed to compounds of similar chemical or biologic composition to study agents * Psychological issues, no appropriate caregivers identified, or non-compliant to medication * Clinically significant uncontrolled illness * Uncontrolled infection (bacterial, viral, fungal) * Other active malignancy * Females only: Pregnant or breastfeeding * Any other condition that would, in the investigator's judgment, contraindicate the patient's participation in the clinical study due to safety concerns with clinical study procedures * Prospective participants who, in the opinion of the investigator, may not be able to comply with all study procedures (including compliance issues related to feasibility/logistics)

Design outcomes

Primary

MeasureTime frameDescription
Number of participants with Grade III-IV acute graft versus host disease (GVHD)By day 100Acute GVHD will be graded and staged according to Mount Sinai Acute GVHD International Consortium (MAGIC) criteria.
GVHD-free relapse-free survival rateFrom start of hematopoietic cell transplantation to grade III-IV acute GvHD, chronic GvHD requiring systemic treatment, relapse, or death (from any cause), whichever occurs first, assessed at 1 yearWill be calculated using the Kaplan-Meier method.

Secondary

MeasureTime frameDescription
Incidence of adverse eventsUp to 2 yearsThe toxicity/adverse event information recorded on each subject will include type, severity, duration, and attribution/ association with the study regimen. Tables will be constructed to summarize the observed incidence, severity and type of toxicity, including infection.
Overall survivalDay of stem cell infusion (day 0) until death or last follow-up, assessed at 100 daysWill be calculated using the Kaplan-Meier method.
Progression free survivalFrom the date of stem cell infusion to the date of death, disease relapse/progression, or last follow-up, assessed at 100 daysWill be calculated using the Kaplan-Meier method.
Relapse/progressionDay 0 to relapse/progression, assessed at 100 daysThe cumulative incidence will be calculated using the competing risk method.
Non-relapse mortalityDay 0 until non-disease related death or last follow-up, assessed at 100 daysThe cumulative incidence will be calculated using the competing risk method.
Rate of acute GVHDOn day 100Acute GVHD will be graded and staged according to MAGIC criteria. The first day of acute GVHD onset at a certain grade will be used to calculate the cumulative incidence (grades II-IV). The endpoint will be evaluated from day 0 through 100 days post-transplant. The cumulative incidence will be calculated using the competing risk method.
Rate of chronic GVHDFrom day 80 through 1 year post-transplantChronic graft versus host disease will be evaluated and scored according to National Institutes of Health Consensus Staging. The first day of chronic GVHD onset will be used to calculate the cumulative incidence. The cumulative incidence will be calculated using the competing risk method.
Rate of infectionDay -7 to day 120Microbiologically documented infections will be reported by site of disease, date of onset, severity and resolution, if any. This data will be captured via case report form and will be collected from day -7 to day 120 post-transplant and will follow the same data collection intervals as the toxicity and adverse event data.
Rate of hematologic recoveryUp to 2 yearsAbsolute neutrophil count \>= 0.5 x 10\^3/uL achieved and sustained for 3 consecutive lab values on different days with no subsequent decline. Platelets \>= 20 K/uL independent of platelet transfusion support (date should reflect no transfusions in previous 7 days, and the first of 3 consecutive lab values on different days).
Incidence of cytokine release syndromeUp to 2 yearsDefined and graded per American Society for Transplantation and Cellular Therapy criteria.
Gut microbiome assessmentUp to 2 yearsGut microbiome diversity will be assessed by the inverse Simpson Index and compared among CBM588-treated/untreated patients; the inverse Simpson index is an ecological measure of α microbial diversity calculated by the inverse of the expected probability of 2 randomly selected bacterial sequences as belonging to the same operational taxonomic unit.

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORMonzr M Al Malki

City of Hope Medical Center

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 4, 2026