Dose-finding Study of GSK2636771 When Administered in Combination With

Status Completed

Clinical Trial Summary

This Phase I, open-label, dose-finding, multicenter study is designed to determine the recommended Phase II dose (RP2D) for the combination of an orally administered Phosphatidylinositol-4,5-bisphosphate 3-kinase beta (PI3K-beta) inhibitor (GSK2636771) with enzalutamide. Subjects with phosphatase and tensin homolog (PTEN)-deficient metastatic castration-resistant prostate cancer (mCRPC) who are receiving a stable dose of enzalutamide with a recently demonstrated progression (either by RECIST [Response Evaluation Criteria In Solid Tumors] version 1.1, prostate-specific antigen [PSA] progression, and/or progression in bone) per the Prostate Cancer Working Group 2 (PCWG2) criteria will be enrolled. Eligible subjects will be enrolled in the Dose-Escalation Phase to determine the maximum tolerated dose (MTD) of the combination therapy using a modified 3+3 dose escalation procedure. The safety, pharmacokinetics (PK) and clinical efficacy will also be assessed to guide the selection of the RP2D. The starting dose will be GSK2636771 300 mg once daily in combination with the recommended dose (160 milligram [mg] once daily) of oral enzalutamide. Once the RP2D has been established, additional subjects will be enrolled in the Dose Expansion Phase to further evaluate the safety, PK and preliminary clinical activity. Safety assessments will be performed throughout the study including physical examinations, vital signs, clinical laboratory tests, 12 lead electrocardiograms and monitoring of adverse events. Blood samples will be collected for pharmacokinetic analysis. Subjects will continue treatment until an unacceptable toxicity, disease progression, withdrawal of consent or death occurs. A post-treatment follow-up visit will be performed within 30 days of the last dose of study treatment. Xtandi is a registered trademark of Astellas Pharma Inc

Clinical Trial Description

n/a

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT02215096
Study type	Interventional
Source	GlaxoSmithKline
Contact
Status	Completed
Phase	Phase 1
Start date	November 13, 2014
Completion date	October 3, 2019

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Dose-finding Study of GSK2636771 When Administered in Combination With Enzalutamide in Male Subjects With Metastatic Castration-Resistant Prostate Cancer

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms