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RecruitingNCT06235801Updated Nov 3, 2026

A Phase I/II Study of Gilteritinib and Momelotinib for Patients With Relapsed or Refractory FLT3-Mutated Acute Myeloid Leukemia

A Phase 1/2 interventional study of Gilteritinib and Momelotinib in Myeloid Leukemia, sponsored by M.D. Anderson Cancer Center. Recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-11-03.

Sponsored by M.D. Anderson Cancer Center · Phase 1/2, Interventional, and Treatment

From the registry’s dates

  • Started May 2024; still recruiting 2 years 5 months later.
Phase
Phase 1/2
Study type
Interventional
Enrollment
40
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

To learn the recommended dose of momelotinib that can be given in combination with gilteritinib to participants with AML.

Read the detailed description

Primary Objectives

  • Phase I: To establish the minimum safe and biologically-effective dose of momelotinib in combination with gilteritinib in relapsed/refractory FLT3-mutated AML
  • Phase II: To determine the modified CRc rate of the regimen, including complete remission (CR), CR with incomplete hematologic recovery (CRi) or morphologic leukemia free state (MLFS)

Secondary Objectives

  • To assess other efficacy endpoints (CR rate, measurable residual disease negativity by flow cytometry and FLT3 PCR, relapse-free survival, overall survival)
  • To assess proportion of participants proceeding to allogeneic hematopoietic stem cell transplantation
  • To determine the safety of the combination regimen

Exploratory Objectives

  • To evaluate the impact of baseline genomic alterations on response and survival of the combination regimen
  • To determine the impact of baseline FLT3 allelic ratio on response and survival
  • To evaluate the pharmacokinetics (e.g. AUC, Cmax, Tmax and half-life) of momelotinib in the combination regimen
  • To evaluate changes in circulating cytokine levels in response to treatment
  • To evaluate inhibition of FLT3 signaling and inhibition of JAK/STAT signaling pathways
  • To evaluate other biomarkers associated with response and resistance to the combination regimen
02

Conditions studied

  • Myeloid Leukemia

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03

In context

Leukemia, Myeloid

136 studies on the registry are indexed under Leukemia, Myeloid; 23 are open to participants now.

This study's planned enrollment of 40 is close to the median of 40 across 117 interventional studies indexed under Leukemia, Myeloid.

Browse Leukemia, Myeloid studies →

Lead sponsor

M.D. Anderson Cancer Center is the lead sponsor of 3,047 studies on the registry; 578 are open to participants now.

Of its 612 completed or terminated interventional studies of FDA-regulated products, 409 (67%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Diagnosis:

    a) Adults ≥18 years with FLT3-mutated AML. Participants with either FLT3-ITD or FLT3 D835/D836 mutations will be eligible

  2. Performance status ≤3 ( Scale).
  3. Adequate liver and renal function as defined by the following criteria:

    1. Total serum ≤ 2 x (ULN), unless due to Gilbert's syndrome, hemolysis or the underlying leukemia approved by the PI
    2. (ALT) or aspartate aminotransferase (AST) ≤ 3 x ULN, unless due to the underlying leukemia approved by the PI

    d) ≥ 30 mL/min

  4. Willingness to use adequate prior to study entry, for the duration of study participation, and for 4 months after completion of study participation. For women of , adequate methods of contraception include: complete abstinence, hormonal contraception (i.e. birth control pills, injection, implant, transdermal patch, vaginal ring), intrauterine device (IUD), tubal Ligation or hysterectomy, participants/partner post vasectomy, implantable or injectable contraceptives, and condoms plus spermicide
  5. Ability to understand and the willingness to sign a written document.

Exclusion criteria

Exclusion Criteria:

  1. Congenital long syndrome or QTcF >450 msec. Repeat EKGs after correction of electrolytes or discontinuation of QT prolonging medications are allowed to meet entry criteria. In cases where QTcF >450 msec is considered to be falsely increased due to inaccurate automated reading and not (e.g. due to bundle branch block), participants are still eligible if cardiologist reviews and documents that QTcF is ≤ 450 msec when manually measured.
  2. Active serious infection not controlled by oral or intravenous antibiotics (e.g. persistent fever or lack of improvement despite antimicrobial treatment).
  3. Active Class III-V cardiac failure as defined by the Functional Classification.
  4. Active central nervous system leukemia
  5. Child-Turcotte-Pugh class C cirrhosis
  6. Known (HIV) seropositive.
  7. Known surface antigen seropositive or known or suspected active infection Note: Participants who have isolated positive hepatitis B core antibody (ie, in the setting of negative hepatitis B surface antigen and negative hepatitis B surface antibody) must have an undetectable hepatitis B viral load. Participants who have positive hepatitis C antibody may be included if they have an undetectable hepatitis C viral load.
  8. Participants with a prior or concurrent whose natural history or treatment is not anticipated to interfere with the safety or efficacy assessment of the regimen may be included only after discussion with the PI
  9. Treatment with any investigational antileukemic agents or chemotherapy agents in the last 7 days before study entry, unless full recovery from side effects has occurred or participant has rapidly progressive disease judged to be life-threatening by the investigator.

    Prior recent treatment with , hydroxyurea and/or cytarabine (given for cytoreduction) permitted.

  10. Inability to swallow
  11. Unable or unwilling to sign
  12. Pregnant women will not be eligible; A female participant is eligible to participate if she is not pregnant or breastfeeding, and at least one of the following conditions applies: i. Is a woman of nonchildbearing potential (WONCBP), OR ii. Is a woman of (WOCBP) and using a method that is highly effective (with a failure rate of \<1% per year), with low user dependency, during the intervention period and for at least 4 month after the last dose of study drug.
  13. Participants with psychiatric illness/social situations that would limit compliance with study requirements.
  14. History of allergic reactions attributed to compounds of similar chemical or biologic composition to gilteritinib, momelotinib or other agents used in study.
Terms in these criteria, in plain language(18)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Relapsed and refractory

Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

Creatinine clearance (CrCl)

How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
40 participants (estimated)

Study arms

  • Experimental
    Dose Escalation Phase 1/Phase 2

    Participants who are enrolled in Part 1, the dose of momelotinib you receive will depend on when you join this study. Participants you are enrolled in Part 2, you will receive momelotinib at the recommended dose that was found in Part 1. All participants will receive the same dose level of gilteritinib. Cycle 1 will be 35 days in length. Momelotinib will be administered once daily by mouth on days 1-35. Gilteritinib will be administered once daily by mouth on days 8-35. Cycles 2 and beyond will be 28 days in length. Momelotinib and gilteritinib will be administered once daily by mouth on days 1-28.

    Drug: Gilteritinib · Drug: Momelotinib

Interventions

06

What researchers measure

Primary outcomes

  1. Safety and adverse events (AEs)

    Incidence of Adverse Events, Graded According to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) Version (v) 5.0

    Time frame: Through study completion; an average of 1 year

07

Study locations

1 of 1 sites recruiting
08

References and documents

09

Updates

1 registry update since Sep 25, 2026
Minor edits
Nothing that changes what the study is or who can join. Edited: verification date
1 update, last Nov 3, 2026
Show all 1 update
  1. Nov 3, 2026
    Minor edits only
    + 1 other change: verification date

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT06235801
Collaborators
GlaxoSmithKline
Responsible party
Sponsor
First posted
Feb 1, 2024
Start date
May 22, 2024
Primary completion
Oct 1, 2027 (estimated)
Completion
Oct 1, 2029 (estimated)
Last update
Nov 3, 2026

Study contacts

Nicholas Short, MD
Contact
nshort@mdanderson.org
(713) 563-4485
Nicholas Short, MD
principal investigator · MD Anderson Center

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drugs tested here: Gilteritinib · Momelotinib

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