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A Study of 14C-Bleximenib (Radiolabeled) in Participants With Acute Leukemia

An Open-Label Study to Investigate the Absorption, Metabolism, And Excretion (AME) Of 14C-Bleximenib (JNJ-75276617) in Participants With Acute Leukemia

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07295951
Enrollment
10
Registered
2025-12-22
Start date
2025-11-18
Completion date
2026-07-13
Last updated
2026-03-13

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

Conditions

Acute Lymphoblastic Leukemia, Acute Leukemias, Acute Myeloid Leukemia

Brief summary

The purpose of this study is to assess how the body absorbs, breaks down (metabolism), and removes (excretes) radiolabeled bleximenib (a drug molecule that has been chemically bonded with a radioactive isotope which emits radiation making it easier to track in the body) in participants with acute leukemia (highly aggressive blood cancer typically characterized by large numbers of immature white blood cells in the bone marrow).

Interventions

DRUG14C-bleximenib

14C-bleximenib will be administered orally.

Non-radiolabeled bleximenib will be administered orally.

Sponsors

Janssen Research & Development, LLC
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Body weight greater than or equal to (\>=) 40 kilograms (kg) * Relapsed or refractory (R/R) acute leukemia harboring histone-lysine N-methyltransferase 2A (KMT2A), nucleophosmin 1 (NPM1), nucleoporin 98 (NUP98) or nucleoporin 214 (NUP214) gene alterations, and has exhausted, or is ineligible for available therapeutic options * Eastern cooperative oncology group (ECOG) performance status grade of 0 or 1 * Regular bowel movements (that is \[i.e.\], average production of at least one stool every 2 days) * A woman of childbearing potential must have a negative highly sensitive serum beta-human chorionic gonadotropin at screening and within 48 hours prior to the first dose of study treatment

Exclusion criteria

* Acute promyelocytic leukemia or diagnosis of Down syndrome associated leukemia, according to world health organization (WHO) 2016 criteria * Active central nervous system (CNS) disease * Recipient of solid organ transplant * Any toxicity (except for alopecia, stable peripheral neuropathy, thrombocytopenia, neutropenia, anemia) from previous anticancer therapy that has not resolved to baseline or to Grade 1 or less * Major surgery (e.g., requiring general anesthesia) within 2 weeks prior to first dose of study treatment or has not recovered from surgery or has major surgery planned during the time the participant is receiving study treatment

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Dose Excreted in Urine (feu)Up to Day 28Total amount excreted into the urine, expressed as a percentage of the administered dose will be reported.
Percentage of Dose Excreted in Feces (fef)Up to Day 28Total amount excreted into the feces expressed as a percentage of the administered dose will be reported.
Amount Excreted in Urine (Aeu)Up to Day 28Aeu defined as the total amount of bleximenib and radioactivity excreted into the urine will be reported.
Amount Excreted in Feces (Aef)Up to Day 28Aef defined as the total amount of bleximenib and radioactivity excreted into the feces will be reported.
Area Under the Concentration-Time Curve from Time 0 to the Last Measurable Concentration (AUC0-t)Cycle 1 Day 1, and Cycle 1 Day 2 (Cycle duration=28 days)AUC0-t in whole blood and plasma will be reported.
Maximum Observed Concentration (Cmax)Cycle 1 Day 1, and Cycle 1 Day 2 (Cycle duration=28 days)Maximum observed concentration in whole blood and plasma will be determined.

Secondary

MeasureTime frameDescription
Number of Participants with Adverse Events (AEs) and Serious Adverse Events (SAEs)Up to 58 daysAn AE is any untoward medical occurrence in a clinical study participant administered a pharmaceutical (investigational or non investigational) product. An AE does not necessarily have a causal relationship with the study treatment. A SAE is any untoward medical occurrence that at any dose: results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect, is a suspected transmission of any infectious agent via a medicinal product and is medically important.

Countries

United Kingdom

Contacts

CONTACTStudy Contact
Participate-In-This-Study1@its.jnj.com844-434-4210
STUDY_DIRECTORJanssen Research & Development, LLC Clinical Trial

Janssen Research & Development, LLC

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 14, 2026