Testing the Combination of Two Anti-cancer Drugs, Peposertib (M3814) and M1774 for Advanced Solid Tumors

Phase 1

Recruiting

• Conditions: Advanced Malignant Solid Neoplasm; Unresectable Malignant Solid Neoplasm; Metastatic Malignant Solid Neoplasm
• Interventions: Procedure: Biopsy; Procedure: Biospecimen Collection; Procedure: Computed Tomography; Procedure: Magnetic Resonance Imaging; Drug: Peposertib; Procedure: Positron Emission Tomography; Drug: Tuvusertib

• Registration Number: NCT05687136
• Lead Sponsor: National Cancer Institute (NCI)

Brief Summary

This phase I trial tests the safety, side effects and best dose of peposertib (M3814) in combination with tuvusertib (M1774) in treating patients with solid tumors that have spread to other places in the body (advanced). Peposertib and tuvusertib stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.

Detailed Description

PRIMARY OBJECTIVES:

I. To determine the safety and tolerability of peposertib (M3814) in combination with M1774. (DOSE ESCALATION AND EXPANSION COHORT) II. To determine the maximum tolerated dose (MTD) and recommended phase 2 dose (RP2D) of the combination of peposertib (M3814) and M1774. (DOSE ESCALATION COHORT)

SECONDARY OBJECTIVES:

I. To observe and record anti-tumor activity. II. To determine the pharmacokinetic (PK) profiles of peposertib (M3814) and M1774 when administered in combination.

EXPLORATORY OBJECTIVES:

I. To explore correlations between pharmacodynamic (PD) and predictive biomarkers (gammaH2AX, phospho-KAP1 and phospho-RPA) with clinical outcomes.

II. To explore correlations between baseline genomic alterations of ataxia-telangiectasia mutated (ATM) or markers of replicative stress, ATM expression by immunohistochemistry (IHC), RAD5' foci formation with clinical outcomes.

III. To determine metrics of anticancer activity including the objective response rate (ORR) and progression-free survival (PFS).

OUTLINE: This a dose-escalation study of peposertib and tuvusertib, followed by a dose-expansion study.

Patients receive peposertib orally (PO) in combination with tuvusertib PO once (QD) or twice (BID) daily on days 1-14 of each cycle. Cycles repeat every 28 days in the absence of disease progression, pregnancy, non-compliance, unacceptable toxicity, termination of the study or the study drug is no longer available. Patients also undergo tumor biopsy before cycle(C) 1 day (D)1, C1D10 and at progression and blood sample collection during prestudy and weeks 1, 2, 3, 4, 5, 6, and at progression. Patients additionally undergo positron emission tomography (PET), computed tomography (CT), and magnetic resonance imaging (MRI) at baseline and are repeated every 8 weeks for 24 weeks then every 12 weeks unless clinically indicated.

Study Timeline

• Study First Submitted: 2023-01-14
• Study First Submitted QC: 2023-01-14
• Study First Posted: 2023-01-18
• Study Start: 2024-06-07
• Status Verified: 2024-08
• Last Update Submitted: 2025-01-02
• Last Update Posted: 2025-01-03
• Primary Completion: 2026-08-31
• Study Completion: 2026-08-31

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 66

Inclusion Criteria

• Patients must have histologically confirmed solid malignancy that is metastatic or unresectable and for which standard curative or palliative measures do not exist or are no longer effective.

• For the dose escalation and dose expansion phases, patients must have genomic evidence of inactivating ATM mutations, amplification of MYC, mutation of FBXW7, CCNE1 amplification, SWI/SNF member mutation (ARID1A, PBRM1, SMARCA4, ARID2, ARID1b, SMARCA2, SS18), and ATRX/DAXX. Other SWI/SNF mutations may be considered after discussion with the principal investigator (PI).

• Progression on at least one prior standard therapy.

• Age >= 18 years. Because no dosing or adverse event data are currently available on the use of peposertib (M3814) in combination with M1774 in patients < 18 years of age, children are excluded from this study.

• Life expectancy > 3 months.

• Eastern cooperative oncology group (ECOG) performance status =< 2 (Karnofsky >= 60%).

• Measurable disease by response evaluation criteria in solid tumors (RECIST) 1.1 (RECIST) 1.1 non-measurable disease permitted for the dose escalation portion).

• Hemoglobin >= 9 g/dL.

• Absolute neutrophil count >= 1,500/mcL.

• Platelets >= 1000,000/mcL.

• Total bilirubin =< 1.5 x institutional upper limit of normal (ULN).

• Asparate aminotransferase (AST) (serum glutamic oxaloacetic transaminase [SGOT]/alanine aminotransferase (ALT)(serum glutamic pyruvic transaminase [SGPT]) =< 3 × institutional ULN or =< 5.0X the ULN if liver metastases are present.

• Glomerular filtration rate (GFR) >= 60 mL/min/1.73m^2.

• Human immunodeficiency virus (HIV)-infected patients on effective anti-retroviral therapy with undetectable viral load within 6 months are eligible for this trial. Anti-retroviral therapy agents must be considered for potential drug-drug interactions per exclusion.

• For patients with evidence of chronic hepatitis B virus (HBV) infection, the HBV viral load must be undetectable on suppressive therapy, if indicated.

• Patients with a history of hepatitis C virus (HCV) infection must have been treated and cured. For patients with HCV infection who are currently on treatment, they are eligible if they have an undetectable HCV viral load.

• Patients with a prior or concurrent malignancy whose natural history or treatment does not have the potential to interfere with the safety or efficacy assessment of the investigational regimen are eligible for this trial.

• Patients with known history or current symptoms of cardiac disease, or history of treatment with cardiotoxic agents, should have a clinical risk assessment of cardiac function using the New York Heart Association Functional Classification. To be eligible for this trial, patients should be class 2B or better.

• Able to swallow whole capsules or tablets.

• Willing to undergo paired biopsies (expansion arm).

• Female patients of childbearing potential must have a negative urine or serum pregnancy test within 72 hours prior to receiving the first dose of study medication. If the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required.

  • Female patients of childbearing potential must be willing to use an adequate method of contraception for the course of the study through 6 months after the last dose of study medication.
  • Male patients of reproductive potential must agree to avoid impregnating a partner while receiving study drug and for 3 months after the last dose of study drug by complying with adequate methods of contraception.
  • Note: Abstinence is acceptable if this is the usual lifestyle and preferred contraception for the patient.

• Ability to understand and the willingness to sign a written informed consent document. Participants with impaired decision-making capacity who have a legally-authorized representative (LAR) and/or family member available will also be eligible.

Read More

Exclusion Criteria

• Patients who have received immunotherapy within 21 days of Cycle 1 Day 1.

• Patients who have received therapeutic radiation therapy within 21 days, or palliative radiation therapy within 7 days, of Cycle 1 Day 1.

• Patients who have undergone major surgery within 21 days of Cycle 1 Day 1.

• Patients who have not recovered from adverse events due to prior anti-cancer therapy (i.e., have residual toxicities > Grade 1) with the exception of alopecia, controlled endocrine toxicity (e.g., hypothyroidism), and cutaneous toxicity which will be permitted at Grade 2.

• Patients who are receiving any other investigational agents.

• Patients with new or progressive brain metastases (active brain metastases) or leptomeningeal disease are eligible if the treating physician determines that immediate central nervous system (CNS) specific treatment is not required and is unlikely to be required during the first cycle of therapy.

• History of allergic reactions attributed to compounds of similar chemical or biologic composition to peposertib (M3814) and M1774.

• Patients who cannot discontinue concomitant medications or herbal supplements that are strong inhibitors or strong inducers of cytochrome P450 (CYP) isoenzymes CYP3A4/5, CYP2C19, and CYP2C9. Concomitant use of CYP3A4/5 substrates with a narrow therapeutic index are also excluded. Concomitant administration of sensitive substrates of P-gp, BCRP, OCT1, OATP1B1, and OATP1B3 should be avoided (if the use is unavoidable, carefully monitor patients for signs of increased toxicity). Patients may confer with the study doctor to determine if alternative medications can be used. The following categories of medications and herbal supplements must be discontinued for at least the specified period of time before the patient can be treated:

  • Strong inducers of CYP3A4/5,CYP2C19, and CYP2C9: >= 3 weeks prior to study treatment.
  • Strong inhibitors of CYP3A4/5, CYP2C19, and CYP2C9: >= 1 week prior to study treatment.
  • Substrates of CYP3A4/5, , P-gp, BCRP, OCT1, OATP1B1, and OATP1B3 with a narrow therapeutic index: >= 1 day prior to study treatment.

• Patients who cannot discontinue proton-pump inhibitors (PPIs). H-2-receptor antagonist should be held during the 2 weeks of concurrent dosing with M1774. There is no H-2-receptor antagonist restriction during the off weeks without M1774/peposertib (M3814) dosing.

• Patients who received hematopoietic growth factor (e.g., granulocyte colony-stimulating factor, erythropoietin) within 14 days prior to the first dose of study intervention.

• Patients with uncontrolled intercurrent illness including, but not limited to: ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or chronic indwelling drains.

• QTcF (using the Fridericia correction calculation) of > 470 msec

• Pregnant women and women who are breastfeeding are excluded from this study because the effects of the study drugs on the developing fetus are unknown.

• Patients with a prior or concurrent malignancy whose natural history or treatment does not have the potential to interfere with the safety or efficacy assessment of the investigational regimen as assessed by the treating investigator may be included with the approval of the sponsor-investigator.

Read More

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Treatment (peposertib, tuvusertib)	Biopsy	Patients receive peposertib PO in combination with tuvusertib PO QD or BID daily on days 1-14 of each cycle. Cycles repeat every 28 days in the absence of disease progression, pregnancy, non-compliance, unacceptable toxicity, termination of the study or the study drug is no longer available. Patients also undergo tumor biopsy before C1D1, C1D10 and at progression and blood sample collection during prestudy and weeks 1, 2, 3, 4, 5, 6, and at progression. Patients additionally undergo PET, CT, and MRI at baseline and are repeated every 8 weeks for 24 weeks then every 12 weeks unless clinically indicated.
Treatment (peposertib, tuvusertib)	Biospecimen Collection	Patients receive peposertib PO in combination with tuvusertib PO QD or BID daily on days 1-14 of each cycle. Cycles repeat every 28 days in the absence of disease progression, pregnancy, non-compliance, unacceptable toxicity, termination of the study or the study drug is no longer available. Patients also undergo tumor biopsy before C1D1, C1D10 and at progression and blood sample collection during prestudy and weeks 1, 2, 3, 4, 5, 6, and at progression. Patients additionally undergo PET, CT, and MRI at baseline and are repeated every 8 weeks for 24 weeks then every 12 weeks unless clinically indicated.
Treatment (peposertib, tuvusertib)	Computed Tomography	Patients receive peposertib PO in combination with tuvusertib PO QD or BID daily on days 1-14 of each cycle. Cycles repeat every 28 days in the absence of disease progression, pregnancy, non-compliance, unacceptable toxicity, termination of the study or the study drug is no longer available. Patients also undergo tumor biopsy before C1D1, C1D10 and at progression and blood sample collection during prestudy and weeks 1, 2, 3, 4, 5, 6, and at progression. Patients additionally undergo PET, CT, and MRI at baseline and are repeated every 8 weeks for 24 weeks then every 12 weeks unless clinically indicated.
Treatment (peposertib, tuvusertib)	Magnetic Resonance Imaging	Patients receive peposertib PO in combination with tuvusertib PO QD or BID daily on days 1-14 of each cycle. Cycles repeat every 28 days in the absence of disease progression, pregnancy, non-compliance, unacceptable toxicity, termination of the study or the study drug is no longer available. Patients also undergo tumor biopsy before C1D1, C1D10 and at progression and blood sample collection during prestudy and weeks 1, 2, 3, 4, 5, 6, and at progression. Patients additionally undergo PET, CT, and MRI at baseline and are repeated every 8 weeks for 24 weeks then every 12 weeks unless clinically indicated.
Treatment (peposertib, tuvusertib)	Peposertib	Patients receive peposertib PO in combination with tuvusertib PO QD or BID daily on days 1-14 of each cycle. Cycles repeat every 28 days in the absence of disease progression, pregnancy, non-compliance, unacceptable toxicity, termination of the study or the study drug is no longer available. Patients also undergo tumor biopsy before C1D1, C1D10 and at progression and blood sample collection during prestudy and weeks 1, 2, 3, 4, 5, 6, and at progression. Patients additionally undergo PET, CT, and MRI at baseline and are repeated every 8 weeks for 24 weeks then every 12 weeks unless clinically indicated.
Treatment (peposertib, tuvusertib)	Positron Emission Tomography	Patients receive peposertib PO in combination with tuvusertib PO QD or BID daily on days 1-14 of each cycle. Cycles repeat every 28 days in the absence of disease progression, pregnancy, non-compliance, unacceptable toxicity, termination of the study or the study drug is no longer available. Patients also undergo tumor biopsy before C1D1, C1D10 and at progression and blood sample collection during prestudy and weeks 1, 2, 3, 4, 5, 6, and at progression. Patients additionally undergo PET, CT, and MRI at baseline and are repeated every 8 weeks for 24 weeks then every 12 weeks unless clinically indicated.
Treatment (peposertib, tuvusertib)	Tuvusertib	Patients receive peposertib PO in combination with tuvusertib PO QD or BID daily on days 1-14 of each cycle. Cycles repeat every 28 days in the absence of disease progression, pregnancy, non-compliance, unacceptable toxicity, termination of the study or the study drug is no longer available. Patients also undergo tumor biopsy before C1D1, C1D10 and at progression and blood sample collection during prestudy and weeks 1, 2, 3, 4, 5, 6, and at progression. Patients additionally undergo PET, CT, and MRI at baseline and are repeated every 8 weeks for 24 weeks then every 12 weeks unless clinically indicated.

Primary Outcome Measures

Name	Time	Method
Incidence of adverse events	Up to week 12	Descriptive statistics will be used for safety in the Phase 1b escalation study. Patients will be included in this analysis if they receive at least one dose of any study treatment. For toxicity reporting, all adverse events will be graded and analyzed using Common Terminology Criteria for Adverse Events (CTCAE). Type of adverse events, intensity (grading), and attribution will be provided in a listing. All adverse events resulting in discontinuation, dose modification, and/or dosing interruption, and/or treatment delay of drug will also be summarized. Laboratory test results will be classified according to CTCAE.
Incidence of dose limiting toxicity	Up to 28 days

Secondary Outcome Measures

Name	Time	Method
Pharmacokinetic (PK) analysis	Pre, 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 24 hour (h) post dose on cycle (C)1 day (D)1, pre, 0.5, 1, 1.5, 2, 3, 4, 6, and 8 h post dose on C1D10 (dose-escalation); pre, 0.5, 1,1.5, 2, and 3 h post dose on C1D1 and C1D10 (dose-expansion)	Peposertib (M3814) and M1774 concentrations in these samples will be quantitatively measured using a liquid chromatography/tandem mass spectrometric method. The individual PK parameters will be derived: maximum concentration (Cmax), time to maximum concentration (Tmax), are under the curve (AUC), half life (T1/2), apparent oral clearance (Cl/F), and apparent volume of distribution in steady state (Vss/F) using non-compartmental methods with the software WinNonlin, as feasible. Advanced population PK methods may be employed to assess the link between drug exposure and biological effects and efficacy. The PK variables will be tabulated and descriptive statistics (e.g., geometric means and coefficients of variation) calculated for each dose level. PK parameters (e.g., T1/2, Cmax, Cl, and AUC) will be compared across dose level using nonparametric statistical testing techniques.

Trial Locations

Locations (6)

National Cancer Institute Developmental Therapeutics Clinic; 🇺🇸 Bethesda, Maryland, United States

National Institutes of Health Clinical Center; 🇺🇸 Bethesda, Maryland, United States

Massachusetts General Hospital Cancer Center; 🇺🇸 Boston, Massachusetts, United States

Dana-Farber Cancer Institute; 🇺🇸 Boston, Massachusetts, United States

NYU Langone Hospital - Long Island; 🇺🇸 Mineola, New York, United States

Laura and Isaac Perlmutter Cancer Center at NYU Langone; 🇺🇸 New York, New York, United States