This open-label, multicenter, Phase I, dose-escalation study will evaluate the safety, tolerability, and pharmacokinetics (PK) of GDC-0575 administered alone or in combination with gemcitabine in participants with refractory solid tumors or lymphoma. In Stage 1, cohorts of participants will receive multiple ascending oral doses of GDC-0575 alone or in combination with intravenous gemcitabine. In Stage 2, participants will receive GDC-0575 orally in combination with intravenous gemcitabine at or below the maximum tolerated dose determined in Stage 1. Anticipated time on study treatment is until disease progression or unacceptable toxicity occurs, up to approximately 5 years.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
104
Participants will receive GDC-0575 orally at a starting dose of 15 mg.
Participants will receive gemcitabine intravenously at a dose of 1000 mg/m\^2 and/or 500 mg/m\^2.
Yale Cancer Center
New Haven, Connecticut, United States
Dana Farber Cancer Institute
Boston, Massachusetts, United States
Karmanos Cancer Institute
Detroit, Michigan, United States
University of Oklahoma Health Sciences Center
Oklahoma City, Oklahoma, United States
The Sarah Cannon Research Inst
Nashville, Tennessee, United States
Institut Bergonie; Oncologie
Bordeaux, France
Institut Gustave Roussy; Departement Oncologie Medicale
Villejuif, France
Percentage of Participants With Adverse Events (AEs)
Time frame: Baseline up to approximately 5 years
Percentage of Participants With Dose-Limiting Toxicities (DLTs)
Time frame: Stage 1 Arm 1: Day 1 up to Day 21. Stage 1 Arm 2: Day 1 up to Day 22 or 29
Maximum Tolerated Dose (MTD) of GDC-0575
Time frame: Stage 1 Arm 1: Day 1 up to Day 21. Stage 1 Arm 2: Day 1 up to Day 22 or 29
Recommended Phase II Dose of GDC-0575
Time frame: Stage 1 Arm 1: Day 1 up to Day 21. Stage 1 Arm 2: Day 1 up to Day 22 or 29
Area Under the Curve From Time Zero to Extrapolated Infinite Time (AUC0-inf) of GDC-0575
Stage 1 Arm 1, Cycle 1 of 21 days: predose (5 to 30 minutes) on Days 1, 2, 3, 8, 15; 0.5, 1, 1.5, 2, 4, 6, 8 hours (h) postdose on Days 1, 3; 2, 4h postdose on Days 2, 15; 2h postdose on Day 8; on Days 4, 5. Stage 1 Arm 2 and Stage 2, Cycle 1 of 21 days: predose (5 minutes), 0.5, 1, 1.5, 2, 4, 6h postdose on Day 2 (additionally at 8h postdose on Day 2 for Arm 2a only); predose (0.5h), 2h postdose on Day 9
Time frame: Stage 1 Arm 1, Cycle 1 of 21 days: predose on Days 1, 2, 3, 8, 15; postdose on Days 1, 2, 3, 4, 5, 8, 15. Stage 1 Arm 2 and Stage 2, Cycle 1 of 21 days: predose and postdose on Days 2, 9 (detailed timeframe is provided in outcome measure description)
Area Under the Curve From Time Zero to End of Dosing Interval (AUCtau)
Stage 1 Arm 1, Cycle 1 of 21 days: predose (5 to 30 minutes) on Days 1, 2, 3, 8, 15; 0.5, 1, 1.5, 2, 4, 6, 8 h postdose on Days 1, 3; 2, 4h postdose on Days 2, 15; 2h postdose on Day 8; on Days 4, 5. Stage 1 Arm 2 and Stage 2, Cycle 1 of 21 days: predose (5 minutes), 0.5, 1, 1.5, 2, 4, 6h postdose on Day 2 (additionally at 8h postdose on Day 2 for Arm 2a only) ; predose (0.5h), 2h postdose on Day 9
Time frame: Stage 1 Arm 1, Cycle 1 of 21 days: predose on Days 1, 2, 3, 8, 15; postdose on Days 1, 2, 3, 4, 5, 8, 15. Stage 1 Arm 2 and Stage 2, Cycle 1 of 21 days: predose and postdose on Days 2, 9 (detailed timeframe is provided in outcome measure description)
Maximum Observed Plasma Concentration (Cmax) GDC-0575
Stage 1 Arm 1, Cycle 1 of 21 days: predose (5 to 30 minutes) on Days 1, 2, 3, 8, 15; 0.5, 1, 1.5, 2, 4, 6, 8 h postdose on Days 1, 3; 2, 4h postdose on Days 2, 15; 2h postdose on Day 8; on Days 4, 5. Stage 1 Arm 2 and Stage 2, Cycle 1 of 21 days: predose (5 minutes), 0.5, 1, 1.5, 2, 4, 6h postdose on Day 2 (additionally at 8h postdose on Day 2 for Arm 2a only) ; predose (0.5h), 2h postdose on Day 9
Time frame: Stage 1 Arm 1, Cycle 1 of 21 days: predose on Days 1, 2, 3, 8, 15; postdose on Days 1, 2, 3, 4, 5, 8, 15. Stage 1 Arm 2 and Stage 2, Cycle 1 of 21 days: predose and postdose on Days 2, 9 (detailed timeframe is provided in outcome measure description)
Minimum Observed Plasma Trough Concentration (Cmin) of GDC-0575
Time frame: Stage 1 Arm 1, Cycle 1 of 21 days: predose (5 to 30 minutes) on Days 1, 2, 3, 8, 15; Stage 1 Arm 2 and Stage 2, Cycle 1 of 21 days: predose (5 minutes) on Day 2; predose (0.5h) on Day 9
Time to Reach Maximum Observed Plasma Concentration (Tmax) of GDC-0575
Stage 1 Arm 1, Cycle 1 of 21 days: predose (5 to 30 minutes) on Days 1, 2, 3, 8, 15; 0.5, 1, 1.5, 2, 4, 6, 8 h postdose on Days 1, 3; 2, 4h postdose on Days 2, 15; 2h postdose on Day 8; on Days 4, 5. Stage 1 Arm 2 and Stage 2, Cycle 1 of 21 days: predose (5 minutes), 0.5, 1, 1.5, 2, 4, 6h postdose on Day 2 (additionally at 8h postdose on Day 2 for Arm 2a only) ; predose (0.5h), 2h postdose on Day 9
Time frame: Stage 1 Arm 1, Cycle 1 of 21 days: predose on Days 1, 2, 3, 8, 15; postdose on Days 1, 2, 3, 4, 5, 8, 15. Stage 1 Arm 2 and Stage 2, Cycle 1 of 21 days: predose and postdose on Days 2, 9 (detailed timeframe is provided in outcome measure description)
Apparent Terminal Half-Life (t1/2) of GDC-0575
Stage 1 Arm 1, Cycle 1 of 21 days: predose (5 to 30 minutes) on Days 1, 2, 3, 8, 15; 0.5, 1, 1.5, 2, 4, 6, 8 h postdose on Days 1, 3; 2, 4h postdose on Days 2, 15; 2h postdose on Day 8; on Days 4, 5. Stage 1 Arm 2 and Stage 2, Cycle 1 of 21 days: predose (5 minutes), 0.5, 1, 1.5, 2, 4, 6h postdose on Day 2 (additionally at 8h postdose on Day 2 for Arm 2a only) ; predose (0.5h), 2h postdose on Day 9
Time frame: Stage 1 Arm 1, Cycle 1 of 21 days: predose on Days 1, 2, 3, 8, 15; postdose on Days 1, 2, 3, 4, 5, 8, 15. Stage 1 Arm 2 and Stage 2, Cycle 1 of 21 days: predose and postdose on Days 2, 9 (detailed timeframe is provided in outcome measure description)
Apparent Oral Clearance (CL/F) of GDC-0575
Stage 1 Arm 1, Cycle 1 of 21 days: predose (5 to 30 minutes) on Days 1, 2, 3, 8, 15; 0.5, 1, 1.5, 2, 4, 6, 8 h postdose on Days 1, 3; 2, 4h postdose on Days 2, 15; 2h postdose on Day 8; on Days 4, 5. Stage 1 Arm 2 and Stage 2, Cycle 1 of 21 days: predose (5 minutes), 0.5, 1, 1.5, 2, 4, 6h postdose on Day 2 (additionally at 8h postdose on Day 2 for Arm 2a only) ; predose (0.5h), 2h postdose on Day 9
Time frame: Stage 1 Arm 1, Cycle 1 of 21 days: predose on Days 1, 2, 3, 8, 15; postdose on Days 1, 2, 3, 4, 5, 8, 15. Stage 1 Arm 2 and Stage 2, Cycle 1 of 21 days: predose and postdose on Days 2, 9 (detailed timeframe is provided in outcome measure description)
Accumulation Ratio (Rac) of GDC-0575
Stage 1 Arm 1, Cycle 1 of 21 days: predose (5 to 30 minutes) on Days 1, 2, 3, 8, 15; 0.5, 1, 1.5, 2, 4, 6, 8 h postdose on Days 1, 3; 2, 4h postdose on Days 2, 15; 2h postdose on Day 8; on Days 4, 5. Stage 1 Arm 2 and Stage 2, Cycle 1 of 21 days: predose (5 minutes), 0.5, 1, 1.5, 2, 4, 6h postdose on Day 2 (additionally at 8h postdose on Day 2 for Arm 2a only) ; predose (0.5h), 2h postdose on Day 9
Time frame: Stage 1 Arm 1, Cycle 1 of 21 days: predose on Days 1, 2, 3, 8, 15; postdose on Days 1, 2, 3, 4, 5, 8, 15. Stage 1 Arm 2 and Stage 2, Cycle 1 of 21 days: predose and postdose on Days 2, 9 (detailed timeframe is provided in outcome measure description)
PK-dose Proportionality as Assessed With Cmax of GDC-0575
Stage 1 Arm 1, Cycle 1 of 21 days: predose (5 to 30 minutes) on Days 1, 2, 3, 8, 15; 0.5, 1, 1.5, 2, 4, 6, 8 h postdose on Days 1, 3; 2, 4h postdose on Days 2, 15; 2h postdose on Day 8; on Days 4, 5. Stage 1 Arm 2 and Stage 2, Cycle 1 of 21 days: predose (5 minutes), 0.5, 1, 1.5, 2, 4, 6h postdose on Day 2 (additionally at 8h postdose on Day 2 for Arm 2a only) ; predose (0.5h), 2h postdose on Day 9
Time frame: Stage 1 Arm 1, Cycle 1 of 21 days: predose on Days 1, 2, 3, 8, 15; postdose on Days 1, 2, 3, 4, 5, 8, 15. Stage 1 Arm 2 and Stage 2, Cycle 1 of 21 days: predose and postdose on Days 2, 9 (detailed timeframe is provided in outcome measure description)
PK-dose Proportionality as Assessed With AUC of GDC-0575
Stage 1 Arm 1, Cycle 1 of 21 days: predose (5 to 30 minutes) on Days 1, 2, 3, 8, 15; 0.5, 1, 1.5, 2, 4, 6, 8 h postdose on Days 1, 3; 2, 4h postdose on Days 2, 15; 2h postdose on Day 8; on Days 4, 5. Stage 1 Arm 2 and Stage 2, Cycle 1 of 21 days: predose (5 minutes), 0.5, 1, 1.5, 2, 4, 6h postdose on Day 2 (additionally at 8h postdose on Day 2 for Arm 2a only) ; predose (0.5h), 2h postdose on Day 9
Time frame: Stage 1 Arm 1, Cycle 1 of 21 days: predose on Days 1, 2, 3, 8, 15; postdose on Days 1, 2, 3, 4, 5, 8, 15. Stage 1 Arm 2 and Stage 2, Cycle 1 of 21 days: predose and postdose on Days 2, 9 (detailed timeframe is provided in outcome measure description)
Phospho-Cyclin-Dependent Kinase 2 (pCdk2) Levels in Fresh Tumor
Stage 1 Arm 1: Screening (Day -21 to -1), Cycle 1 Day 4 (Cycle length=21 days). Stage 1 Arm 2a: Screening (Day -21 to -1), Days 3 and 10 of Cycle 2. Stage 1 Arm 2b: Screening (Day -21 to -1), Day 3 of Weeks 4 and 5. Stage 2: Screening (Day -21 to -1), Day 3 of Weeks 1 and 2
Time frame: Stage 1 Arm 1: Screening (Day -21 to -1), Cycle 1 Day 4 (Cycle length=21 days). Stage 1 Arm 2a: Screening (Day -21 to -1), Days 3, 10 of Cycle 2. Stage1 Arm2b, Stage 2: Screening (Day -21 to -1), Day 3 of Weeks 4, 5 (Stage1 Arm2b), Weeks 1, 2 (Stage 2)
Phospho-Cyclin-Dependent Kinase 2 (pCdk2) Levels in Skin Tissue
Stage 1 Arm 1: Screening (Day -21 to -1), Cycle 1 Day 4 (Cycle length=21 days). Stage 1 Arm 2a: Screening (Day -21 to -1), Days 3 and 10 of Cycle 2. Stage 1 Arm 2b: Screening (Day -21 to -1), Day 3 of Weeks 4 and 5. Stage 2: Screening (Day -21 to -1), Day 3 of Weeks 1 and 2
Time frame: Stage 1 Arm 1: Screening (Day -21 to -1), Cycle 1 Day 4 (Cycle length=21 days). Stage 1 Arm 2a: Screening (Day -21 to -1), Days 3, 10 of Cycle 2. Stage1 Arm2b, Stage 2: Screening (Day -21 to -1), Day 3 of Weeks 4, 5 (Stage1 Arm2b), Weeks 1, 2 (Stage 2)
Gamma-H2Ax (γ-H2Ax) Levels in Fresh Tumor
Stage 1 Arm 1: Screening (Day -21 to -1), Cycle 1 Day 4 (Cycle length=21 days). Stage 1 Arm 2a: Screening (Day -21 to -1), Days 3 and 10 of Cycle 2. Stage 1 Arm 2b: Screening (Day -21 to -1), Day 3 of Weeks 4 and 5. Stage 2: Screening (Day -21 to -1), Day 3 of Weeks 1 and 2
Time frame: Stage 1 Arm 1: Screening (Day -21 to -1), Cycle 1 Day 4 (Cycle length=21 days). Stage 1 Arm 2a: Screening (Day -21 to -1), Days 3, 10 of Cycle 2. Stage1 Arm2b, Stage 2: Screening (Day -21 to -1), Day 3 of Weeks 4, 5 (Stage1 Arm2b), Weeks 1, 2 (Stage 2)
Gamma-H2Ax (γ-H2Ax) Levels in Skin Tissue
Stage 1 Arm 1: Screening (Day -21 to -1), Cycle 1 Day 4 (Cycle length=21 days). Stage 1 Arm 2a: Screening (Day -21 to -1), Days 3 and 10 of Cycle 2. Stage 1 Arm 2b: Screening (Day -21 to -1), Day 3 of Weeks 4 and 5. Stage 2: Screening (Day -21 to -1), Day 3 of Weeks 1 and 2
Time frame: Stage 1 Arm 1: Screening (Day -21 to -1), Cycle 1 Day 4 (Cycle length=21 days). Stage 1 Arm 2a: Screening (Day -21 to -1), Days 3, 10 of Cycle 2. Stage1 Arm2b, Stage 2: Screening (Day -21 to -1), Day 3 of Weeks 4, 5 (Stage1 Arm2b), Weeks 1, 2 (Stage 2)
Percentage of Participants With Objective Response as Determined Using Response Evaluation Criteria in Solid Tumors (RECIST) v1.1
Time frame: Baseline until disease progression or death (up to approximately 5 years)
Progression-Free Survival (PFS) as Determined Using RECIST v1.1
Time frame: Baseline until disease progression or death (up to approximately 5 years)
Duration of Objective Response as Determined Using RECIST v1.1
Time frame: Baseline until disease progression or death (up to approximately 5 years)
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