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KRT-232 in Subjects With Relapsed or Refractory Small Cell Lung Cancer

An Open-Label, Multicenter, Phase 2 Study of the Safety and Efficacy of KRT-232 in Subjects With Relapsed or Refractory Small Cell Lung Cancer (SCLC)

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05027867
Enrollment
3
Registered
2021-08-30
Start date
2021-12-06
Completion date
2022-08-26
Last updated
2023-08-16

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

Conditions

Small-cell Lung Cancer, Small Cell Lung Carcinoma, Small Cell Lung Cancer Extensive Stage, Small Cell Lung Cancer Recurrent

Keywords

navtemadlin

Brief summary

This study evaluates KRT-232, a novel oral small molecule inhibitor of MDM2, for the treatment of patients with relapsed or refractory small cell lung cancer. This study will be conducted in 2 parts. Part 1 will evaluate two treatment arms, each with a different KRT-232 dose. Part 2 will continue the evaluation of the selected treatment arms from Part 1.

Interventions

Administered by mouth

Sponsors

Kartos Therapeutics, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Histologically or cytologically confirmed diagnosis of SCLC documented as TP53WT * Disease must be measurable per RECIST Version 1.1 * Evidence of radiographic progression during or after at least one prior platinum-containing therapy with no curative therapy available. Subjects who have received only one prior line of therapy must not be candidates for platinum-based regimens at relapse. * Subjects must have received a checkpoint inhibitor (PD-1 or PD-L1) unless contraindicated if checkpoint inhibitors are approved and available. * ECOG ≤ 2

Exclusion criteria

* Symptomatic or uncontrolled central nervous system (CNS) metastases. * Prior treatment with MDM2 inhibitors * Chemotherapy, immune therapy, cytokine therapy, or any investigational therapy within 14 days prior to the first dose of study treatment * Grade 2 or higher QTc prolongation (\> 480 milliseconds per NCI-CTCAE criteria, version 5.0) * History of major organ transplant

Design outcomes

Primary

MeasureTime frameDescription
Objective response rate (ORR) of each arm24 weeksThe proportion of subjects achieving partial response or better per RECIST 1.1

Secondary

MeasureTime frameDescription
Duration of response (DOR) of each arm1 yearTime from initiation of response to disease progression or death
Progression-free survival (PFS) of each arm1 yearTime from first dose to disease progression or death
Overall survival (OS) of each arm1 yearTime from first dose to death
Disease control rate (DCR) of each arm24 weeksThe proportion of subjects achieving stable disease or better per RECIST 1.1

Countries

Australia, France, Germany, Hungary, South Korea, Spain, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 12, 2026