Phase 1b/2a, open-label, sequential dose escalation and expansion study of AMG 232 in combination with trametinib and dabrafenib in subjects with metastatic melanoma followed by a direct comparison of AMG 232 combined with trametinib and dabrafenib versus trametinib combined with dabrafenib alone.
The study will be conducted in 3 parts: Part 1 - Dose Escalation, Part 2 - Dose Expansion and Part 3, a randomized Phase 2a. In both part 1 and 2, subjects will be enrolled open-label into 1 of 2 arms. For both Arm 1 and Arm 2, the part 1 dose escalation is aimed at determining an AMG 232 maximum tolerated dose (MTD) with a fixed dose of the combination drug(s) and evaluating safety, tolerability, pharmacokinetics and pharmacodynamics of each combination. Part 2 dose expansion will enroll subjects to receive therapy with a dose and schedule of AMG 232 selected from the corresponding part 1 dose escalation. In part 2 subjects will be enrolled to confirm safety and tolerability and to assess clinical activity prior to proceeding to Part 3, Phase 2a. In Phase 2a, Subjects will be randomized open-label in a 1:1 ratio to receive AMG 232 in combination with trametinib plus dabrafenib versus trametinib plus dabrafenib alone. Only Part 1 of the study was enrolled and the study did not proceed into Phase 2.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
31
Given as an oral tablet in escalating doses
Trametinib is an anti-cancer agent
Dabrafenib is an anti-cancer agent
Research Site
Los Angeles, California, United States
Research Site
Aurora, Colorado, United States
Research Site
Boston, Massachusetts, United States
Research Site
Chapel Hill, North Carolina, United States
Subject incidence of treatment-emergent adverse events, Results of safety laboratory tests, vital sign measurements, ECG measurements, PK parameters; Progression-free Survival Rate
Incidence and grade of treatment-emergent adverse events, including dose-limiting toxicities; AMG 232, trametinib, dabrafenib, and metabolite PK parameters; progression-free Survival
Time frame: 36 months
Time to and duration of overall response and duration of stable disease measured by CT or MRI and assessed per Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1, Progression-free and Overall Survival
Objective Tumor Response
Time frame: 36 months
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Research Site
Nashville, Tennessee, United States
Research Site
North Sydney, New South Wales, Australia
Research Site
Melbourne, Victoria, Australia