A Study of GDC-0919 and Atezolizumab Combination Treatment in Participants With Locally Advanced or Metastatic Solid Tumors

Genentech, Inc.158 enrolled

Overview

This study will evaluate the safety, tolerability, and pharmacokinetics of the combination of GDC-0919 and atezolizumab in participants with locally advanced, recurrent, or metastatic incurable solid malignancy that has progressed after available standard therapy or for which standard therapy is ineffective, intolerable, or inappropriate. Participants will be enrolled in two stages, including a dose-escalation stage and an expansion stage.

Study Type

INTERVENTIONAL

Allocation

NON_RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Enrollment

158

Conditions

Solid Tumor

Interventions

AtezolizumabDRUG

Participants will receive atezolizumab at a fixed dose of 1200 milligrams (mg) via intravenous (IV) infusion on Day 1 of each 21-day cycle with the exception of biopsy cohort A, where atezolizumab administration will start on Cycle 2 Day 1.

GDC-0919DRUG

Participants will receive GDC-0919 by mouth (PO) twice daily (BID), specifically every 12 hours. During the dose-escalation stage, the first cohort will receive GDC-0919 at a starting dose of 50 mg PO BID. Dosing will commence on Day -1 for Cycle 1 and follow subsequent 21-day (Days 1 to 21) dosing cycles. The dose will be modified based upon evaluation of DLTs, with single dose escalations not to exceed 2.5-fold of the previous dose. The proposed dosages for evaluation are 50, 100, 200, 400, 600, and 1000 mg PO BID. During the expansion stage, selected solid tumor types will be treated at the MTD or MAD as determined during the dose-escalation stage.

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 * Life expectancy at least 12 weeks * Adequate hematologic and end organ function * Negative pregnancy test and willingness to utilize contraception among women of childbearing potential * Locally advanced, recurrent, or metastatic incurable solid malignancy with measurable disease per RECIST v1.1 * Progression following at least one standard therapy; or standard therapy considered ineffective, intolerable, or inappropriate; or use of an investigational agent recognized as a standard of care * For the expansion stage, histologically confirmed renal cell cancer (RCC), urothelial bladder cancer (UBC), triple-negative breast cancer (TNBC), non-small cell lung cancer (NSCLC), melanoma, head and neck squamous cell carcinoma (HNSCC), gastric cancer, ovarian cancer, cervical cancer, endometrial cancer, or Merkel cell cancer * For the expansion stage, evaluable for PD-L1 expression * Anti PD-1/PD-L1 relapsed cohorts (I and II), participants whose most recent anti-cancer therapy consisted of single-agent PD-1/PD-L1 blockade will be enrolled Exclusion Criteria: * Significant cardiovascular or liver disease * Major surgery within 28 days of study drug * Any anti-cancer therapy within 3 weeks of study drug * Malabsorption syndrome or poor upper gastrointestinal integrity * Primary central nervous system (CNS) malignancy or active metastases within 5 years * Uncontrolled tumor pain * Autoimmune disease other than stable hypothyroidism or vitiligo * Human immunodeficiency virus (HIV), active hepatitis B or C, or tuberculosis * Signs/symptoms of infection, or use of antibiotics within 2 weeks of study drug * Live attenuated vaccine within 4 weeks of study drug * Known history or predisposition to QT interval prolongation * Prior cancer immunotherapy, specifically indoleamine 2,3-dioxygenase (IDO) or tryptophan 2,3-dioxygenase (TDO) inhibitors, T-cell costimulatory receptor agonist antibodies, or checkpoint inhibitors among certain participants

Locations (18)

HonorHealth Research Institute - Bisgrove

Scottsdale, Arizona, United States

The Angeles Clinic and Research Institute, Santa Monica Office

Santa Monica, California, United States

Outcomes

Primary Outcomes

Percentage of Participants With Dose-limiting Toxicities (DLTs)

Time frame: From Day -1 to 21 of Cycle 1 (each cycle is 21 days)

Percentage of Participants With Adverse Events

Time frame: From Screening until new anti-cancer therapy or up to 60 days after last dose (up to approximately 3 years)

Secondary Outcomes

Maximum Tolerated Dose (MTD) of GDC-0919

Time frame: From Day -1 to 21 of Cycle 1 (each cycle is 21 days)

Recommended Phase II Dose (RP2D) for GDC-0919

Time frame: From Day -1 to 21 of Cycle 1 (each cycle is 21 days)

Number of Treatment Cycles Received With GDC-0919 and Atezolizumab

Time frame: From Day -1 of Cycle 1 (each cycle is 21 days) until treatment discontinuation (up to approximately 3 years)

Dose Intensity of GDC-0919 and Atezolizumab

Time frame: From Day -1 of Cycle 1 (each cycle is 21 days) until treatment discontinuation (up to approximately 3 years)

Percentage of Participants With Anti-therapeutic Antibody (ATA) Response to Atezolizumab

Time frame: Pre-dose from Day 1 of Cycle 1 (each cycle is 21 days) up to 120 days after last dose of atezolizumab (up to approximately 3 years)

Plasma Maximum Concentration (Cmax) of GDC-0919

Time frame: Post-dose on Day -1 of Cycle 1 (each cycle is 21 days) and Day 1 of Cycle 2

Plasma Minimum Concentration (Cmin) of GDC-0919

Time frame: Pre-dose from Day -1 of Cycle 1 (each cycle is 21 days) through Day 1 of Cycle 8

Data from ClinicalTrials.gov

This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.