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Clinical Trial Summary

This phase I trial studies the side effects and best dose of navtemadlin in treating patients with glioblastoma (brain cancer) that is newly diagnosed or has come back (recurrent). Navtemadlin may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.


Clinical Trial Description

PRIMARY OBJECTIVES: I. Determine the concentration and variability in concentration of navtemadlin (AMG 232 [KRT 232]) in brain and brain-associated tissue in patients with recurrent glioblastoma (GBM). (Part 1) II. Determine the maximum tolerated dose (MTD) of AMG 232 (KRT 232) given in combination with standard radiation following surgery for patients with newly diagnosed GBM harboring unmethylated MGMT promoters and wild-type TP53. (Part 2) SECONDARY OBJECTIVES: I. Determine the safety and toxicity of AMG 232 (KRT 232) in patients with recurrent GBM. (Part 1) II. Assess the variability of AMG 232 (KRT 232) concentration in tumor enhancing versus (vs.) infiltrative tissue. (Part 1) III. Assess the pharmacodynamic effect of AMG 232 (KRT 232) on p21 elevation. (Part 1) IV. Determine the safety of AMG 232 (KRT 232) given concurrently with radiation therapy (RT) and adjuvantly as monotherapy for patients with newly diagnosed GBM harboring unmethylated MGMT promoters and wild-type TP53. (Part 2) V. Assess AMG 232 (KRT 232) exposure and correlations with pharmacodynamic (PD) effect on p21 elevation. (Part 2) VI. Assess PD effect on MIC-1 elevation in serum. (Part 2) OUTLINE: This is a phase 0, intratumoral pharmacokinetic (PK)/PD study of navtemadlin followed by a phase I dose-escalation study. PART I: Patients with recurrent glioblastoma receive navtemadlin (KRT-232) orally (PO) once daily (QD) for 2 days. Within 3-6 hours of the last dose, patients undergo standard-of-care surgery. Upon recovery (within 45 days), patients with TP53 wild-type tumors continue to receive navtemadlin (KRT-232) PO QD on days 1-7. Cycles repeat every 21 days in the absence of disease progression or unacceptable toxicity. Patients also undergo magnetic resonance imaging (MRI) at baseline as well as on study and/or end of treatment and collection of blood and tissue samples at baseline and on study. PART II: Within 6 weeks of standard-of-care surgery, patients with newly diagnosed glioblastoma undergo radiation therapy daily during weeks 1-6. Patients also receive navtemadlin (KRT-232) PO 1 time weekly (day 2), 2 times weekly (days 2, 4), 3 times weekly (days 2, 3, 5), 4 times weekly (days 2, 3, 4, 5), or 5 times weekly (days 1-5) for 6 weeks during radiation therapy. Patients also undergo MRI at baseline and end of treatment and collection of blood samples at baseline and on study. PART II (EXPANSION COHORT): Patients receive navtemadlin (KRT-232) PO QD on days 1-7. Cycles repeat every 21 days in the absence of disease progression or unacceptable toxicity. Patients also undergo MRI at baseline, on study, and end of treatment. After completion of study treatment, patients are followed every 2 months for the first two years from the off-treatment date, and then every 6 months until 5 years. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03107780
Study type Interventional
Source National Cancer Institute (NCI)
Contact
Status Recruiting
Phase Phase 1
Start date July 9, 2018
Completion date December 31, 2024

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