The purpose of the phase 1 portion of the study is to determine the maximally tolerated dose (MTD) or recommended dose (RD) and the safety/tolerability of PX-866 in combination vemurafenib in patients with any advanced BRAF-mutant cancer. The purpose of the phase 2 portion of the study is to compare progression free survival (PFS), antitumor activity (response rate), disease control rate (DCR), and the safety and tolerability of PX-866 in combination with vemurafenib vs. vemurafenib alone in patients with advanced BRAF-mutant melanoma at the doses recommended from Phase 1.
Name: PX-866
Description: Phase 1 dose escalation: PX-866 in combination administered orally every day in 28-day cycles until progression or unacceptable toxicity. Phase 2 combination: PX-866 and vemurafenib administered every day in 28 day cycles until progression or unacceptable toxicity. Phase 2 single-agent: vemurafenib administered orally at labeled dose every day in 28 day cycles until progression or unacceptable toxicity.Type: DrugPhase 1 Dose Escalation of PX-866 + vemurafenib Phase 2 Combination PX-866 + vemurafenib
Name: vemurafenib
Description: vemurafenib is a B-Raf enzyme inhibitorType: DrugPhase 1 Dose Escalation of PX-866 + vemurafenib Phase 2 Combination PX-866 + vemurafenib Phase 2 Single-agent vemurafenib
Allocation: Randomized
Parallel Assignment
There are 2 SNPs
Inclusion Criteria: - ≥ 18 years at time of consent - If a sexually active male or a sexually active female of child-bearing potential, agrees to use a highly effective form of contraception (including birth control pills, barrier device, or intrauterine device)from the time of consent 90 days following the last dose of study drug - If female of child-bearing potential, negative pregnancy test - For Phase 1: must have histologically or cytologically-confirmed advanced cancer that is BRAF mutation-positive (V600E or V600K) for which there is no remaining standard therapy with curative potential. --- V600E ---
For Phase 2: must have histologically or cytologically-confirmed BRAF mutation-positive (V600E or V600K) advanced (defined as unresectable Stage IIIC or IV) melanoma that has not been treated with a selective BRAF inhibitor - For Phase 1: must have measurable or non-measurable disease. --- V600E ---
These patients must have undergone appropriate imaging studies and currently be on a stable, lowest possible dose of steroids - History of allergic reactions attributed to compounds of similar chemical or biologic composition to PX-866 or vemurafenib - Uncontrolled intercurrent illness including, but not limited to: ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements - Uncorrectable electrolyte abnormalities or long QT syndrome - Poorly controlled diabetes mellitus - Pregnant, breastfeeding, or planning to become pregnant - Known to be human immunodeficiency virus (HIV)-positive - Inability to swallow pills - Previous treatment with a phosphatidylinositol-3-kinase (PI-3K) inhibitor - Any other significant medical or psychiatric condition that in the opinion of the investigator renders the patient inadequate for participation Inclusion Criteria: - ≥ 18 years at time of consent - If a sexually active male or a sexually active female of child-bearing potential, agrees to use a highly effective form of contraception (including birth control pills, barrier device, or intrauterine device)from the time of consent 90 days following the last dose of study drug - If female of child-bearing potential, negative pregnancy test - For Phase 1: must have histologically or cytologically-confirmed advanced cancer that is BRAF mutation-positive (V600E or V600K) for which there is no remaining standard therapy with curative potential. --- V600E ---
Inclusion Criteria: - ≥ 18 years at time of consent - If a sexually active male or a sexually active female of child-bearing potential, agrees to use a highly effective form of contraception (including birth control pills, barrier device, or intrauterine device)from the time of consent 90 days following the last dose of study drug - If female of child-bearing potential, negative pregnancy test - For Phase 1: must have histologically or cytologically-confirmed advanced cancer that is BRAF mutation-positive (V600E or V600K) for which there is no remaining standard therapy with curative potential. --- V600E --- --- V600K ---
For Phase 2: must have histologically or cytologically-confirmed BRAF mutation-positive (V600E or V600K) advanced (defined as unresectable Stage IIIC or IV) melanoma that has not been treated with a selective BRAF inhibitor - For Phase 1: must have measurable or non-measurable disease. --- V600E --- --- V600K ---
These patients must have undergone appropriate imaging studies and currently be on a stable, lowest possible dose of steroids - History of allergic reactions attributed to compounds of similar chemical or biologic composition to PX-866 or vemurafenib - Uncontrolled intercurrent illness including, but not limited to: ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements - Uncorrectable electrolyte abnormalities or long QT syndrome - Poorly controlled diabetes mellitus - Pregnant, breastfeeding, or planning to become pregnant - Known to be human immunodeficiency virus (HIV)-positive - Inability to swallow pills - Previous treatment with a phosphatidylinositol-3-kinase (PI-3K) inhibitor - Any other significant medical or psychiatric condition that in the opinion of the investigator renders the patient inadequate for participation Inclusion Criteria: - ≥ 18 years at time of consent - If a sexually active male or a sexually active female of child-bearing potential, agrees to use a highly effective form of contraception (including birth control pills, barrier device, or intrauterine device)from the time of consent 90 days following the last dose of study drug - If female of child-bearing potential, negative pregnancy test - For Phase 1: must have histologically or cytologically-confirmed advanced cancer that is BRAF mutation-positive (V600E or V600K) for which there is no remaining standard therapy with curative potential. --- V600E --- --- V600K ---