At a glance
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An Open-Label, Four-Part, Phase I/II Study to Investigate the Safety, Pharmacokinetics, Pharmacodynamics, and Clinical Activity of the MEK Inhibitor GSK1120212, BRAF Inhibitor GSK2118436 and the Anti-EGFR Antibody Panitumumab in Combination in Subjects With BRAF-mutation V600E Positive Colorectal Cancer and in Subjects With CRC With Secondary Resistance to Prior Anti-EGFR Therapy
In Brief
A Phase 2 clinical trial evaluating Dabrafenib, Trametinib, and 2 other interventions for Cancer. Completed, enrolled 166 participants across 20 sites in 8 countries.
Detailed Summary
This was a four part, phase I/II study aimed to evaluate the safety, tolerability and efficacy of combination of an anti-EGFR antibody panitumumab (P) either with a BRAF inhibitor (dabrafenib (D); GSK2118436) alone or with the combination of a BRAF inhibitor and a MEK inhibitor (trametinib (T); GSK1120212) in patients with BRAF-mutant V600E advanced or mCRC. The goal was to: 1) Determine RP2R/MTD for doublet (D+P) and triplet (D+T+P) combinations in Part 1; 2) Assess clinical activity for these combinations in Part 2; 3) Determine RP2R/MTD for double (T+P) combination in Part 4A, and assess clinical activity of this combination in two patient populations in Part 4B (patients with BRAF-V600E mutation-positive advanced or metastatic CRC and patients with advanced or metastatic CRC with secondary resistance to anti-EGFR therapy).
Study Details
Timeline
Interventions
Each capsule contains 50 mg or 75 mg of GSK2118436; 50 mg strength capsules are Swedish orange (dark red) opaque hypromellose size 2 capsules and 75 mg strength capsules are pink opaque hypromellose size 1 capsules. The initial dosing regimen will be twice daily (BID) continuous oral daily dosing.
Each tablet contains 0.5mg or 2.0 mg GSK1120212; 0.5 mg is yellow modified oval biconvex film-coated tablets of size 4.8 mm X 8.9 mm and 2 mg as pink round biconvex film coated tablets;7.5 mm in diameter. The initial dosing regimen will be once daily continuous oral daily dosing.
Panitumumab is a sterile, colorless, translucent-to-white amorphous, proteinaceous powder available as 100 mg panitumumab in 5 mL (20 mg/mL) single-use vial; 200 mg panitumumab in 10 mL (20 mg/mL) single-use vial; 400 mg panitumumab in 20 mL (20 mg/mL) single-use vial; to be administered as an intravenous infusion over 60 minutes, every 14 days. Doses higher than 1000 mg should be administered over 90 minutes.
5-fluorouracil-based chemotherapy