This study is being done to find the best dose of an investigational drug called NBM-BMX for people with metastatic uveal melanoma, a type of eye cancer that has spread to other parts of the body. The study will help doctors learn about the side effects of NBM-BMX, how the drug is processed in the body, and whether it may slow down or shrink tumors. Participants will take NBM-BMX as a capsule by mouth twice daily on an empty stomach with at least six ounces (180 mL) of water. No food or drink (other than water) should be consumed for at least two hours after each dose. Participants will visit the clinic about once every week or two for exams and blood tests while taking NBM-BMX. After stopping treatment, a follow-up visit will occur about 30 days later. Treatment may continue as long as the cancer does not get worse and side effects remain manageable.
NBM-BMX will be administered orally twice daily (BID) at approximately 12 ± 2-hour intervals for 28 consecutive days per cycle, beginning on Day 1 of Cycle 1. Patients will continue treatment until disease progression, intolerable toxicity likely attributable to NBM-BMX, or voluntary withdrawal from the study. If disease progression is equivocal and, in the investigator's judgment, the patient appears to be benefiting, treatment may continue with close monitoring and re-evaluation at the next scheduled tumor assessment. The study drug will be provided in 100 mg dry powder hard gel capsules. All dosing will be performed on an outpatient basis. NBM-BMX must be taken on an empty stomach with at least six ounces (180 mL) of water. Patients should not eat food for at least 1 hour before and 2 hours after each dose of NBM-BMX. Only water is permitted during this fasting window. To minimize the risk of altered absorption, other oral medications should be taken at least 1 hour before or 2 hours after NBM-BMX administration, unless otherwise approved by the Investigator. Due to the pH-dependent solubility of NBM-BMX, acid-reducing agents (such as PPIs or H2 blockers) may reduce drug absorption. Patients must avoid taking these agents during the study. Local antacids may be taken at least 2 hours before or after dosing if clinically indicated. Compliance with these fasting instructions should be reinforced at each clinic visit and documented in the patient diary and/or source records. At each study visit, patients will be dispensed enough drug for daily dosing until the next visit, along with specific instructions on the number of capsules to take in the morning and evening. Drug accountability, including the number of capsules and containers dispensed, patient number, and date of dispensing, will be recorded in the Case Report Form. Patients must store the drug in the original container at room temperature (15 to 25°C) in a secure location away from excessive heat or moisture. Participants will be instructed not to remove or consume the desiccant included in each bottle. Prior to dispensing, all women of childbearing potential must have a negative pregnancy test, be counseled on the teratogenic potential of NBM-BMX, and agree to use two acceptable forms of contraception, including one barrier method. If pregnancy is suspected, dosing must be discontinued immediately. If pregnancy is confirmed by serum test, the patient will be withdrawn from the study and complete the early termination visit. If pregnancy is ruled out, treatment may be resumed. Patients will be instructed to complete a dosing diary, recording the date and time of each dose, any missed doses, and any symptoms or side effects experienced. Research staff will review the diary, address any concerns, and collect unused medication and empty containers at each study visit. Every effort will be made to retrieve all dispensed containers; if unsuccessful, the reason will be documented. If a patient misses a dose, participants should not attempt to make it up and should resume treatment at the next scheduled time. All missed doses must be documented in the dosing diary. SCREENING AND PRETREATMENT ASSESSMENTS Screening tests and evaluations will be used to determine the eligibility of each patient for study inclusion. All patients must provide written informed consent before any study-specific procedures and assessments are performed and any exclusionary medications are discontinued for the purposes of establishing eligibility. Screening evaluations will be performed within the 14 days preceding Day 1, unless otherwise specified. Results of tests or examinations performed as standard of care prior to obtaining informed consent and within 14 days prior to study entry may be used rather than repeating required tests. ASSESSMENTS DURING TREATMENT All visits must occur within ± 3 days from the scheduled date, unless otherwise noted. All assessments will be performed on the day of the specified visit unless a time window is specified. Assessments scheduled on the day of study drug administration (Day 1) of each cycle should be performed prior to study drug administration, unless otherwise noted. STUDY COMPLETION/EARLY TERMINATION VISIT Patients who discontinue from the study will be asked to return to the clinic within 30 days of the last dose of NBM-BMX for a follow-up visit. Assessments and Endpoints Safety will be assessed through adverse event monitoring, vital signs, physical examinations, ECGs, and clinical laboratory tests. Pharmacokinetics will be evaluated at predefined time points. Tumor response will be assessed using RECIST 1.1 criteria every 8 weeks during treatment. Expanded Access Information: An Expanded Access program for this investigational product (NBM-BMX) is available for eligible patients under FDA regulations. For more information, please contact expandedaccess@novelwisepharma.com or visit our website at www.novelwiseoncology.com/expanded-access
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
36
NBM-BMX is a small molecule inhibitor of HDAC8. The majority of metastasizing uveal melanoma (UM) cases are characterized by the presence of BAP1 mutations. However, as BAP1 mutations lead to a loss of function, therapeutic strategies have primarily focused on exploiting vulnerabilities resulting from BAP1 loss or targeting downstream effectors affected by the BAP1-deficient phenotype. In uveal melanocytes, the absence of BAP1 disrupts their differentiated cell identity, potentially contributing to the metastatic behavior observed in BAP1-mutant UM cells. This differentiation block in the melanocytic lineage is thought to be influenced, at least in part, by the activation of HDAC8 downstream, which leads to the repression of differentiation genes through acetylation of the histone H3K27 at the promoter and enhancers associated with these genes. Consequently, inhibiting HDAC8 could potentially reverse the differentiation block caused by the loss of BAP1.
Honor Health Resarch Institute
Scottsdale, Arizona, United States
RECRUITINGSarah Cannon Research Institute (SCRI) - Denver HealthONE Location
Denver, Colorado, United States
RECRUITINGSCRI Oncology Partners
Nashville, Tennessee, United States
RECRUITINGPhase Ib: Incidence of dose-limiting toxicities (DLTs)
Participants experiencing a DLT during Cycle 1 (28 days)
Time frame: Time Frame: Cycle 1 (up to 28 days)
Phase Ib: Maximum Tolerated Dose (MTD)
The highest dose level with ≤1 of 6 participants with a DLT, based on the incidence of DLTs at each dose level of NBM-BMX during Cycle 1 (28 days). MTD will inform the recommended Phase 2 dose (RP2D) of NBM-BMX
Time frame: Cycle 1 (up to 28 days)
Phase II: Objective Response Rate (ORR)
Proportion of patients with complete response (CR) + partial response (PR) determined per RECIST 1.1 while on NBM-BMX.
Time frame: Assessed every 8-12 weeks from first dose; up to ~24 months
Phase Ib: Safety and Tolerability
Incidence, severity, and type of adverse events graded per NCI CTCAE v5.0
Time frame: From first dose through 30 days after last dose (up to ~25 months)
Phase Ib: Objective Response Rate (ORR)
Percentage of participants with confirmed Complete Response (CR) or Partial Response (PR) per RECIST v1.1.
Time frame: Assessed every 8 -12 weeks from first dose; up to ~24 months
Phase Ib. PK: Maximum plasma concentration (Cmax)
Cmax of NBM-BMX from plasma concentration-time profile (suggested unit: ng/mL)
Time frame: Cycle 1 Day 1: pre-dose to 12 hours post-dose
Phase Ib. PK: Time to Cmax (Tmax)
Tmax of NBM-BMX from plasma concentration-time profile (unit: hours)
Time frame: Cycle 1 Day 1: pre-dose to 12 hours post-dose
Phase Ib. PK: Area under the curve (AUC 0-12)
AUC from 0 to 12 hours after the morning dose (unit: ng·h/mL)
Time frame: Cycle 1 Day 1: pre-dose to 12 hours post-dose
Phase Ib. PK: Elimination half-life (T½)
Terminal plasma half-life derived from concentration-time profile (unit: hours)
Time frame: Cycle 1 Day 1
Phase Ib. PK: Apparent oral clearance (CL/F)
CL/F from non-compartmental analysis (unit: L/h)
Time frame: Cycle 1 Day 1
Phase Ib. PK: Apparent volume of distribution (Vd/F)
Vd/F from non-compartmental analysis (unit: L)
Time frame: Cycle 1 Day 1
Phase II: 3-Month Progression-Free Survival (PFS) Rate
Proportion of participants alive and progression-free at 3 months per RECIST v1.1.
Time frame: 3 months from treatment initiation
Phase II: Overall Survival (OS)
Time from first dose to death from any cause
Time frame: Up to ~24 months
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