Overview
Phase 1 dose escalation will determine the maximum tolerated dose (MTD) and recommended Phase 2 dose (RP2D) of revumenib in participants with acute leukemia.
In Phase 2, participants will be enrolled in 3 indication-specific expansion cohorts to determine the efficacy, short- and long-term safety, and tolerability of revumenib.
Description
Phase 1: Oral revumenib; sequential cohorts of escalating dose levels of revumenib to identify the MTD and RP2D. Participants will be enrolled in one of six dose-escalation arms:
Arm A: Participants not receiving any strong cytochrome P450 3A4 (CYP3A4) inhibitor/inducers or fluconazole.
Arm B: Participants receiving itraconazole, ketoconazole, posaconazole, or voriconazole (strong CYP3A4 inhibitors) for antifungal prophylaxis.
Arm C: Participants receiving revumenib and cobicistat.
Arm D: Participants receiving fluconazole (moderate CYP3A4 inhibitor) for antifungal prophylaxis.
Arm E: Participants not receiving any weak, moderate, or strong CYP3A4 inhibitors/inducers.
Arm F: Participants receiving isavuconazole (moderate CYP3A4 inhibitor) for antifungal prophylaxis.
In Phase 2, participants will be enrolled in 3 indication-specific expansion cohorts to determine the efficacy, short- and long-term safety, and tolerability of revumenib:
- Cohort 2A: Participants with KMT2Ar acute lymphoblastic leukemia (ALL)/mixed phenotype acute leukemia (MPAL)
- Cohort 2B: Participants with KMT2A AML
- Cohort 2C: Participants with NPM1m AML
Eligibility
Inclusion Criteria:
Participants must have active acute leukemia (bone marrow blasts ≥5% or reappearance of
blasts in peripheral blood) as defined by the National Comprehensive Cancer Network (NCCN)
in the NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines®) for Acute
Lymphoblastic Leukemia (Version 1.2020) and Acute Myeloid Leukemia (Version 3.2020), or
acute leukemia harboring KMT2A rearrangement, NUP98 rearrangement, or NPM1 mutation that
have detectable disease in the bone marrow.
1. Phase 1:
- Arm A: Participants not receiving any strong CYP3A4 inhibitor/inducers or
fluconazole.
- Arm B: Participants receiving itraconazole, ketoconazole, posaconazole, or
voriconazole (strong CYP3A4 inhibitors) for antifungal prophylaxis.
- Arm C: Participants receiving revumenib in combination with cobicistat.
- Arm D: Participants receiving fluconazole (moderate CYP3A4 inhibitor).
- Arm E: Participants not receiving any weak, moderate, or strong CYP3A4
inhibitors/inducers.
- Arm F: Participants receiving isavuconazole (moderate CYP3A4 inhibitor) for
antifungal prophylaxis.
2. Phase 2:
Documented R/R active acute leukemia (bone marrow blasts ≥5% or reappearance of blasts
in peripheral blood) as defined by the NCCN Guidelines® for Acute Lymphoblastic
Leukemia (Version 1.2020) and Acute Myeloid Leukemia (Version 3.2020).
- Cohort 2A: Documented R/R ALL/MPAL with KMT2A rearrangement.
- Cohort 2B: Documented R/R AML with KMT2A rearrangement.
- Cohort 2C: Documented R/R AML with NPM1m.
3. White blood cell count below 25,000/ microliter at time of enrollment. Participants
may receive cytoreduction prior to enrollment per protocol-specified criteria.
4. Male or female participants aged ≥30 days old.
5. Eastern Cooperative Oncology Group (ECOG) performance status score 0-2 or
Karnofsky/Lansky score ≥50.
6. Any prior treatment-related toxicities resolved to ≤Grade 1 prior to enrollment, with
the exception of ≤Grade 2 neuropathy or alopecia.
7. Radiation Therapy: At least 60 days from prior total body irradiation (TBI),
craniospinal radiation and/or ≥50% radiation of the pelvis, or at least 14 days from
local palliative radiation therapy (small port).
8. Stem Cell Infusion: At least 60 days must have elapsed from hematopoietic stem cell
transplant and at least 4 weeks must have elapsed from donor lymphocyte infusion.
9. Immunotherapy: At least 42 days since prior immunotherapy, including tumor vaccines,
and at least 21 days since receipt of chimeric antigen receptor therapy or other
modified T or NK cell therapy.
10. Antileukemia Therapy: At least 14 days, or 5 half-lives, whichever is shorter, since
the completion of antileukemic therapy.
11. Hematopoietic Growth Factors: At least 7 days since the completion of therapy with
short-acting hematopoietic growth factors and 14 days with long-acting growth factors.
12. Biologics: At least 90 days, or 5 half-lives, whichever is shorter, since the
completion of therapy with an antineoplastic biologic agent.
13. Steroids: At least 7 days since systemic glucocorticoid therapy, unless receiving
physiologic dosing or cytoreductive therapy.
14. Adequate organ function.
15. If of childbearing potential, willing to use a highly effective method of
contraception or double barrier method from the time of enrollment through 120 days
following the last study drug dose.
Exclusion Criteria:
Participants meeting any of the following criteria are not eligible for study
participation:
1. Diagnosis of active acute promyelocytic leukemia.
2. Isolated extramedullary relapse (Phase 2 only).
3. Active central nervous system disease (cytologic, such as any blasts on cytospin, or
radiographic).
4. Detectable human immunodeficiency virus (HIV) viral load within the previous 6 months.
Participants with a known history of HIV 1/2 antibodies must have viral load testing
prior to study enrollment.
5. Hepatitis B or C.
6. Pregnant or nursing women.
7. Cardiac Disease:
- Any of the following within the 6 months prior to study entry: myocardial
infarction, uncontrolled/unstable angina, congestive heart failure (New York
Heart Association Classification Class ≥II), life-threatening, uncontrolled
arrhythmia, cerebrovascular accident, or transient ischemic attack.
- Corrected QT interval (QTc) >450 milliseconds.
8. Gastrointestinal Disease:
- any gastrointestinal issue of the upper GI tract that might affect oral drug
absorption or ingestion (that is, gastric bypass, gastroparesis, etc).
- Cirrhosis with a Child-Pugh score of B or C.
9. Graft-Versus-Host Disease (GVHD): Signs or symptoms of acute or chronic GVHD >Grade 0
within 4 weeks of enrollment. All transplant participants must have been off all
systemic immunosuppressive therapy and calcineurin inhibitors for at least 4 weeks
prior to enrollment. Participants may be on physiological doses of steroids.
10. Concurrent malignancy in the previous 2 years with the exception of basal cell
carcinoma of the skin, squamous cell carcinoma of the skin, or carcinoma in situ (for
example, breast carcinoma, cervical cancer in situ, melanoma in situ) treated with
potentially curative therapy, or concurrent low-grade lymphoma, that is asymptomatic
and lacks bulky disease and shows no evidence of progression, and for which the
participant is not receiving any systemic therapy or radiation.
11. In Phase 1 and Phase 2: Participants requiring the concurrent use of medications known
or suspected to prolong the QT/QTc interval, with the exception of drugs with low risk
of QT/QTc prolongation that are used as standard supportive therapies (for example,
diphenhydramine, famotidine, ondansetron, Bactrim) and the azoles permitted in the
relevant arms of Phase 1 and in Phase 2.