Study of Navtemadlin Plus Pembrolizumab as Maintenance Therapy in Locally Advanced and Metastatic Non-Small Cell Lung Cancer

Sponsor
Kartos Therapeutics, Inc. (Industry)
Overall Status
Not yet recruiting
CT.gov ID
NCT05705466
Collaborator
(none)
92
2
54

Study Details

Study Description

Brief Summary

This study evaluates Navtemadlin (KRT-232) in combination with Pembrolizumab as a maintenance therapy in patients with locally advanced and metastatic non small cell lung cancer.

Condition or Disease Intervention/Treatment Phase
Phase 1/Phase 2

Detailed Description

This is a 2 part, phase 1b/2, maintenance study for patients who have achieved a partial response (PR) or complete response (CR) after completion of up to 4 cycles of a combination platinum-based chemotherapy plus CPI regimen.

Phase 1b is a 3+3 dose escalation design that will be used to determine the maximum tolerated dose (MTD) and/or the recommended phase 2 dose (RP2D) of navtemadlin in combination with pembrolizumab. A Safety Review Committee (SRC) will review the safety data during the dose escalation to decide on dose escalation and/or exploration of intermediate doses.

Phase 2 will evaluate the efficacy and safety of the RP2D of navtemadlin plus pembrolizumab compared to navtemadlin placebo plus pembrolizumab. Each Arm will have approximately 40 subjects enrolled for a total of approximately 80 subjects. Eligible subjects will be randomized 1:1. This part of the study has a randomized, controlled, double-blind design. A stratified, permuted-block randomization scheme will be used for treatment allocation.

Study Design

Study Type:
Interventional
Anticipated Enrollment :
92 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Masking:
Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose:
Treatment
Official Title:
A Two-Part, Phase 1b/2, Multicenter, Open-Label, Dose Escalation and Double-Blind, Randomized, Placebo-Controlled, Dose Expansion Study of the Safety, Efficacy and Pharmacokinetics of Navtemadlin Plus Pembrolizumab as Maintenance Therapy in Subjects With Locally Advanced and Metastatic Non-Small Cell Lung Cancer
Anticipated Study Start Date :
Jun 1, 2023
Anticipated Primary Completion Date :
Dec 1, 2025
Anticipated Study Completion Date :
Dec 1, 2027

Arms and Interventions

Arm Intervention/Treatment
Experimental: Navtemadlin in combination with pembrolizumab

Navtemadlin will be administered orally, once daily (QD), on days 1-7 in a 21-day cycle. Pembrolizumab will be administered intravenously on Day 1 of a 21-day cycle.

Drug: Navtemadlin
Navtemadlin is an experimental MDM2 anticancer drug taken by mouth.
Other Names:
  • KRT-232
  • Drug: Pembrolizumab
    Pembrolizumab is a humanized antibody used in cancer immunotherapy that will be administered intravenously
    Other Names:
  • Keytruda
  • Placebo Comparator: Navtemadlin placebo in combination with pembrolizumab

    Navtemadlin placebo will be administered orally, once daily (QD), on days 1-7 in a 21-day cycle. Pembrolizumab will be administered intravenously on Day 1 of a 21-day cycle.

    Drug: Navtemadlin Placebo
    Navtemadlin placebo is a placebo that is the same in appearance to navtemadlin drug taken by mouth.

    Drug: Pembrolizumab
    Pembrolizumab is a humanized antibody used in cancer immunotherapy that will be administered intravenously
    Other Names:
  • Keytruda
  • Outcome Measures

    Primary Outcome Measures

    1. Phase 1b- To determine the recommended Phase 2 dose (RP2D) [21 days]

      The Safety Review Committee will determine the RP2D based on safety data of the combination of navtemadlin and pembrolizumab.

    2. Phase 2- To assess the treatment effect of navtemadlin plus pembrolizumab treatment on PFS compared with the treatment effect of navtemadlin placebo plus pembrolizumab treatment. [64 Months]

      PFS is defined as the time from randomization date to disease progression (assessed by the Independent Review Committee [IRC] per RECIST v1.1) or death, whichever occurs first

    Secondary Outcome Measures

    1. Phase 1b- To characterize the pharmacokinetic (PK) profile of navtemadlin [1 day]

      Will determine the Maximum observed concentration (Cmax) on Cycle 1 Day 1

    2. Phase 1b- To characterize the pharmacokinetic (PK) profile of navtemadlin [1 day]

      Will determine the area under the plasma concentration versus time curve (AUC) on Cycle 1 Day 1

    3. Phase 1b- To characterize the pharmacokinetic (PK) profile of navtemadlin [1 day]

      Will determine the time of maximum plasma concentration (Tmax) on Cycle 1 Day 1

    4. Phase 1b- To assess the treatment effect on progression-free survival (PFS) [64 Months]

      PFS is defined as the time from first dose date to disease progression (assessed by the IRC and Investigator per RECIST v1.1) or death, whichever occurs first

    5. Phase 2- To assess the treatment effect of navtemadlin plus pembrolizumab treatment on PFS compared with the treatment effect of navtemadlin placebo plus pembrolizumab treatment. [64 Months]

      PFS is defined as the time from randomization date to disease progression (assessed by the Investigator per RECIST v1.1) or death, whichever occurs first

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    18 Years and Older
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    No
    Inclusion Criteria:
    • ECOG 0-1

    • Histologically or cytologically confirmed diagnosis of NSCLC documented as TP53WT

    • Locally advanced or metastatic disease; must have completed up to 4 cycles of platinum-based chemo plus CPI and achieved a CR or PR per RECIST V1.1

    • Adequate hematologic, hepatic and renal function (within 14 days)

    Exclusion Criteria:
    • Symptomatic or uncontrolled central nervous system (CNS) metastases

    • Prior treatment with a MDM2 inhibitor

    • Grade 2 or higher QTc prolongation (>480 msec per NCI-CTCAE criteria version 5.0)

    • History of bleeding diathesis; major hemorrhage or intracranial hemorrhage within 24 weeks

    • History of major organ transplant

    • Active pneumonitis or known history of interstitial lung disease, drug-related pneumonitis, or radiation pneumonitis

    • Prior radiotherapy, cytoreductive therapy, cytokine therapy or any investigational therapy within 28 days

    • Medical condition, serious intercurrent illness, psychiatric condition or other circumstance that, in the Investigator's judgment could jeopardize the subject's safety, or that could interfere with study objectives

    Contacts and Locations

    Locations

    No locations specified.

    Sponsors and Collaborators

    • Kartos Therapeutics, Inc.

    Investigators

    None specified.

    Study Documents (Full-Text)

    None provided.

    More Information

    Publications

    None provided.
    Responsible Party:
    Kartos Therapeutics, Inc.
    ClinicalTrials.gov Identifier:
    NCT05705466
    Other Study ID Numbers:
    • KRT-232-119
    First Posted:
    Jan 30, 2023
    Last Update Posted:
    Jan 30, 2023
    Last Verified:
    Jan 1, 2023
    Studies a U.S. FDA-regulated Drug Product:
    Yes
    Studies a U.S. FDA-regulated Device Product:
    No
    Keywords provided by Kartos Therapeutics, Inc.
    Additional relevant MeSH terms:

    Study Results

    No Results Posted as of Jan 30, 2023