Safety and Clinical Pharmacology of GDC-0068 in Combination With Docetaxel, Fluoropyrimidine Plus Oxaliplatin, Paclitaxel, or Enzalutamide in Participants With Advanced Solid Tumors

Summary

This is an open-label, multicenter, Phase Ib, dose-escalation study designed to assess the safety, tolerability, and pharmacokinetics of oral ipatasertib (GDC-0068) administered in combination with either docetaxel (Arm A), or oxaliplatin, leucovorin, 5-fluorouracil (5-FU) (mFOLFOX6 chemotherapy) (Arm B), or paclitaxel (Arm C), in participants with advanced or metastatic solid tumors for which standard therapy either does not exist or has proven ineffective or intolerable. Arm D will assess the safety, tolerability, and pharmacokinetics of ipatasertib administered in combination with enzalutamide in participants with metastatic castration-resistant prostate cancer (CRPC). There will be two stages within each arm of this study: a dose-escalation stage (Stage 1) and a cohort-expansion stage (Stage 2). In Stage 1, approximately 3 to 6 cohorts in Arms A and B and 1 to 2 cohorts in Arms C and D will be evaluated to determine the maximum tolerated dose (MTD) of ipatasertib in a given combination. Additional participants will be enrolled in Stage 2 (cohort expansion), to further characterize the safety and tolerability of ipatasertib in these combinations and to confirm a potential recommended Phase II dose of ipatasertib for each regimen. NOTE: Arms A, B, and C are closed.

Timeline

Start

2011-07-11

Primary completion

2020-10-16

Completion

2020-10-16

Publications

• Isakoff SJ, Tabernero J, Molife LR, Soria JC, Cervantes A, Vogelzang NJ, Patel MR, Hussain M, Baron A, Argiles G, Conkling PR, Sampath D, Maslyar D, Patel P, Chan W, Gendreau S, Musib L, Xu N, Ma H, Lin K, Bendell J. Antitumor activity of ipatasertib combined with chemotherapy: results from a phase Ib study in solid tumors. Ann Oncol. 2020 May;31(5):626-633. doi: 10.1016/j.annonc.2020.02.007. Epub 2020 Feb 20.

Drugs

Indications