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.

Conditions

• Neoplasms

Interventions

DRUG

5-FU

5-FU at a dose level of 400 mg/m\^2 as intravenous (IV) injection followed by a dose of 2400 mg/m\^2 as IV infusion over 46 hrs will be administered on Day 1 of each 14-day cycle until disease progression or unacceptable toxicity.

DRUG

Docetaxel

Docetaxel will be administered at dose level of 75 mg/m\^2 as IV infusion over 1 hr on Day 1 of each 21-day cycle until disease progression or unacceptable toxicity.

DRUG

Enzalutamide

Enzalutamide will be administered orally at a dose level of 160 mg once daily continuously as per schedule defined in respective arm until disease progression or unacceptable toxicity.

DRUG

Ipatasertib

Ipatasertib will be administered orally (in escalating doses during Stage 1 followed by at a dose decided during Stage 1) as per schedule defined in the respective arms.

DRUG

Leucovorin

Leucovorin at a dose level of 400 mg/m\^2 as IV infusion over 2 hrs will be administered on Day 1 of each 14-day cycle until disease progression or unacceptable toxicity.

DRUG

Oxaliplatin

Oxaliplatin at a dose level of 85 mg/m\^2 as IV infusion over 2 hours will be administered on Day 1 of each 14-day cycle until disease progression or unacceptable toxicity.

DRUG

Paclitaxel

Paclitaxel at a dose of 90 mg/m\^2 as IV infusion over 1 hr will be administered on Days 1, 8, and 15 of each 28-day cycle until disease progression or unacceptable toxicity.

Sponsors & Collaborators

• Genentech, Inc.

  lead INDUSTRY

Principal Investigators

• Daniel Maslyar, M.D. · Genentech, Inc.

Study Design

Allocation

NON_RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Model

PARALLEL

Eligibility

Min Age

18 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2011-07-11

Primary Completion

2020-10-16

Completion

2020-10-16

Countries

• United States
• France
• Spain
• United Kingdom

Study Locations