A phase 1, multicenter, open label, non-randomized dose escalation and dose expansion study to examine the maximum tolerated dose, (MTD), minimum effective dose (MED) and/or recommended dose for expansion (RDE) of intratumoral ONM-501 as monotherapy and in combination with a PD-1 checkpoint inhibitor in patients with advanced solid tumors and lymphomas.
This Phase 1, multi-center trial will consist of three parts: monotherapy dose escalation; combination therapy dose finding; and combination therapy dose expansion exploring two doses in specific tumor indication(s). Each dosing cycle of ONM-501 will be 21 days. ONM 501 will be administered as intratumoral injections once per week for three weeks (on Days 1, 8, and 15), followed by three weeks without ONM-501 administration. The monotherapy dose escalation will utilize an accelerated titration method. The combination agent will be administered according to standard protocol, once every three weeks. This phase will evaluate ONM-501 in combination with approved immune checkpoint inhibitor (ICI) cemiplimab. Enrollment in this phase will follow a "Rolling 6" or 6+0 methodology - up to 6 patients will be enrolled in a staggered format; dose escalation of ONM-501 will be permitted. Once the recommended doses for expansion (RDEs) are determined for ONM-501 + ICI combination or ONM-501 monotherapy, the expansion phase of this study will be initiated. The expansion phase will enroll patients in one to three indication-specific expansion cohorts.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
168
Intratumoral injection
Intravenous administration of 350 mg
California Research Institute
Los Angeles, California, United States
ACTIVE_NOT_RECRUITINGBRCR Global
Tamarac, Florida, United States
WITHDRAWNGabrail Cancer Center Research
Canton, Ohio, United States
COMPLETEDOhio State University
Columbus, Ohio, United States
COMPLETEDAllegheny Health Network
Pittsburgh, Pennsylvania, United States
COMPLETEDUPMC Hillman Cancer Center
Pittsburgh, Pennsylvania, United States
COMPLETEDUniversity of Texas Southwestern Medical Center
Dallas, Texas, United States
COMPLETEDMD Anderson Cancer Center
Houston, Texas, United States
ACTIVE_NOT_RECRUITINGVirginia Cancer Specialists, PC
Fairfax, Virginia, United States
COMPLETEDSt Vincent's Hospital
Darlinghurst, New South Wales, Australia
RECRUITING...and 6 more locations
Dose Escalation and Expansion Phases: Number of Participants Reporting one or More Treatment-emergent Adverse Events (TEAEs) and Based on TEAEs Severity
AE incidence will be coded using Medical Dictionary for Regulatory Activities (MedDRA) terminology. AE severity will be graded according to NCI CTCAE version 5.0 or later. Grade 1 scales as Mild (asymptomatic or mild symptoms; clinical or diagnostic observations only; intervention not indicated); Grade 2 scales as Moderate (minimal, local or noninvasive intervention indicated; limiting age-appropriate instrumental Activities of Daily Living \[ADL\]); Grade 3 scales as Severe (severe or medically significant but not immediately life threatening hospitalization or prolongation of hospitalization indicated; disabling; limiting self-care ADL); Grade 4 scales as Life-threatening consequences, urgent intervention indicated, and Grade 5 scales as Death related to Adverse Event (AE)
Time frame: Up to approximately 24 months
Dose Escalation and Expansion Phases: Number of Participants with Dose-Limiting Toxicities (DLTs)
DLT will be defined as the occurrence of any of the following events in the first 28 days of treatment in the dose escalation cohorts in Part 1 of the study or in the first 28 days of treatment for the first 6 patients at any dose in Part 1b (DLT observation periods). Any adverse event resulting in a dose hold or delay of ≥ 28 days will be considered a DLT. Toxicity will be evaluated according to NCI CTCAE version 5.0.
Time frame: Up to approximately 24 months
Dose Escalation and Expansion Phases: Number of Participants Reporting One or More Treatment Emergent Serious Adverse Event (SAEs)
AE incidence will be coded using Medical Dictionary for Regulatory Activities (MedDRA) terminology. AE severity will be graded according to NCI CTCAE version 5.0 or later.
Time frame: Up to approximately 24 months
Dose Escalation and Expansion Phases: Cmax
Cmax is defined as the Maximum Observed Plasma Concentration for ONM-501
Time frame: Dose Escalation and Expansion Phases: Cycle 1 Day 1 and Cycle 1 Day 8 (each cycle is 21 days): predose and at multiple timepoints (up to 24 hours).
Dose Escalation and Expansion Phases: t1/2z
t1/2z is defined as the Terminal Disposition Phase Half-life for ONM-501
Time frame: Dose Escalation and Expansion Phases: Cycle 1 Day 1 and Cycle 1 Day 8 (each cycle is 21 days): predose and at multiple timepoints (up to 24 hours).
Dose Escalation and Expansion Phases: Tmax
Tmax is defined as the Time to Reach the Maximum Plasma Concentration (Cmax) for ONM-501
Time frame: Dose Escalation and Expansion Phases: Cycle 1 Day 1 and Cycle 1 Day 8 (each cycle is 21 days): predose and at multiple timepoints (up to 24 hours).
Dose Escalation and Expansion Phases: AUCt
AUCt is defined as the Area Under the Concentration-time Curve from Time 0 to Time t for ONM-501
Time frame: Dose Escalation and Expansion Phases: Cycle 1 Day 1 and Cycle 1 Day 8 (each cycle is 21 days): predose and at multiple timepoints (up to 24 hours).
Dose Escalation and Expansion Phases: AUCinf
AUCinf is defined as the Area Under the Concentration-time Curve from Time 0 to Infinity for ONM-501
Time frame: Dose Escalation and Expansion Phases: Cycle 1 Day 1 and Cycle 1 Day 8 (each cycle is 21 days): predose and at multiple timepoints (up to 24 hours).
Dose Escalation and Expansion Phases: CL/F
CL/F is defined as the apparent clearance of ONM-501 (CL/F), where F is the fraction of the dose absorbed.
Time frame: Dose Escalation and Expansion Phases: Cycle 1 Day 1 and Cycle 1 Day 8 (each cycle is 21 days): predose and at multiple timepoints (up to 24 hours).
Dose Escalation and Expansion Phases: Vz/F
Vz/F is defined as the apparent volume of distribution of ONM-501 (CL/F), where F is the fraction of the dose absorbed.
Time frame: Dose Escalation and Expansion Phases: Cycle 1 Day 1 and Cycle 1 Day 8 (each cycle is 21 days): predose and at multiple timepoints (up to 24 hours).
Expansion Phase Only: Objective Response Rate (ORR)
Objective response will be defined as a best response of CR or PR. The objective response rate (ORR) will be calculated as the proportion of patients in the Efficacy Analysis Set who achieve an objective response. ORR will be assessed based on Response Evaluation Criteria in Solid Tumor (RECIST) version 1.1. Characterize the plasma pharmacokinetics (PK) of IT ONM-501 as monotherapy and in combination with cemiplimab Evaluate additional measures of clinical benefit including: Duration of Response (DOR), Progression Free Survival (PFS) by RECIST and Overall Survival
Time frame: Up to approximately 24 months
Expansion Phase Only: Duration of Response (DOR)
DOR analyses will be conducted for those patients in the Efficacy Analysis Set who achieve an objective response and is defined as the time from first objective status assessment of CR or PR until documentation of objective disease progression or death from any cause. Patients who do not progress and do not die will be censored on the date of last adequate tumor assessment. If no further adequate post-treatment tumor assessments were obtained for a patient, DOR will be censored at the date of the objective response (i.e., zero duration). DOR will be assessed based on RECIST v1.1.
Time frame: Up to approximately 24 months
Expansion Phase Only: Progression-Free Survival (PFS)
PFS is defined as the time from administration of the first dose of ONM-501 until documentation of objective disease progression or death from any cause. Patients who do not progress and do not die will be censored on the date of last adequate tumor assessment. If no adequate post treatment tumor assessments were obtained for a patient, PFS will be censored at Day 1 (i.e., zero duration). The PFS analysis will be conducted using the Safety Analysis Set. Assess the biological effects of IT ONM-501 demonstrated by changes in immune cells, immune cell markers, serum cytokines (such as TNF-⍺, IFN-⍺, IFN-β, and others consistent with activation of the cGAS-STING pathway) and gene expression patterns
Time frame: Up to approximately 24 months
Expansion Phase Only: Overall Survival (OS)
OS is defined as the time from the date of first dose administration to the date of death.
Time frame: Up to approximately 24 months
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