This open-label, multi-center, dose-escalation study will evaluate the safety, pharmacokinetics, and therapeutic activity of RO6895882 in participants with Carcinoembryonic Antigen (CEA)-positive solid tumors who have progressed on the standard of care therapy. The study will be conducted in 3 parts. Part 1 will be a single ascending dose study in single participant cohort at low RO6895882 dose (less than or equal to \[\</=\] 6 milligrams \[mg\]). Part 2 will be a dose-escalation study of RO6895882 monotherapy given every week (qw), every 2 weeks (q2w), and possibly every 3 weeks (q3w). Part 3 will be an expansion phase of the qw, q2w, and possibly q3w at maximum tolerated dose (MTD) (as determined in Part 2). Part 3 will only be conducted if the risk/benefit assessment, as evaluated by the Sponsor and the investigators, is in favor of the participants. Participants will be treated until disease progression, unacceptable toxicity or withdrawal from treatment for other reasons or death for a maximum duration of 24 months.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
110
Participants will receive RO6895882 at different dose levels and schedules defined in respective arms as IV infusion.
Memorial Sloan Kettering Cancer Center
New York, New York, United States
Rigshospitalet, Onkologisk Klinik
København Ø, Denmark
Helsinki University Central Hospital; Dept of Oncology
Helsinki, Finland
Institut Gustave Roussy; Departement Oncologie Medicale
Villejuif, France
Antoni van Leeuwenhoek Ziekenhuis
Amsterdam, Netherlands
VU MEDISCH CENTRUM; Dept. of Medical Oncology
Amsterdam, Netherlands
Clinica Universitaria de Navarra; Servicio de oncología
Pamplona, Navarre, Spain
Hospital Univ Vall d'Hebron; Servicio de Oncologia
Barcelona, Spain
CHUV; Departement d'Oncologie
Lausanne, Switzerland
Oxford University Hospitals NHS Trust - Churchill Hospital
Oxford, United Kingdom
Part 2: Percentage of Participants With Dose-Limiting Toxicity (DLT)
Time frame: Part 2: within 21 days after the highest dose administration
Part 2: MTD of RO6895882
Time frame: Part 2: within 21 days after the highest dose administration
Percentage of Participants With Adverse Events
Time frame: Day 1 up to 28 days after last dose of study drug (up to approximately 25 months)
Percentage of Participants With Anti-drug Antibodies (ADAs) Against RO6895882
Part 1: Predose (Hour \[Hr\] 0). Part 2/3: qw schedule (1 cycle = 1 week): Predose in Cycle 1, 4, 5, 6, thereafter every 2 months; Part 2/3: q2w schedule (1 cycle = 2 weeks): Predose in Cycle 1, 4, 6, thereafter every 8 weeks. Part 2/3: q3w schedule (1 cycle = 3 weeks): Predose in Cycle 1, 2, 3, 4, 6, thereafter every 9 weeks. Additionally at treatment discontinuation or at 28-days after last dose (up to approximately 25 months)
Time frame: Baseline up to 28-days after last dose (up to approximately 25 months) (please see outcome measure description for detailed time frame)
Area Under the Serum Concentration-Time Curve (AUC) of RO6895882
Predose (Hr 0), 1 hr post start of infusion (SoI), at end of infusion (EoI), 2, 4, 24, 72, 96, 216 hrs post Day 1 dose. Part 2/3: qw schedule (1 cycle = 1 week): Predose, 1 hr post SoI, at EoI, 2, 4 hrs after EoI, 24, 72, 96 hrs postdose in Cycle 1, 5 (include 120 hrs postdose); Predose, 24, 96 hrs postdose in Cycle 2, 3, 4; Predose in any later cycle. Part 2/3: q2w schedule (1 cycle = 2 weeks): Predose, 1 hr post SoI, at EoI, 2, 4, 24, 72, 96, 120, 168, 312 hrs postdose in Cycle 1, 4 (exclude 312 hrs postdose); Predose, 24, 96, 168 hrs postdose in Cycle 2; Predose in all later cycles. Part 2/3: q3w schedule (1 cycle = 3 weeks): Predose, 1 hr post SoI, at EoI, 2, 4, 24, 72, 96, 120, 168, 312, 480 hrs postdose in Cycle 1; Predose, 24, 96, 312 hrs postdose in Cycle 2; Predose, at EoI, 1, 2, 4 hrs post EoI, 24, 72, 96, 120, 168, 312 hrs postdose in Cycle 3; Predose, 24, 72, 120, 312 hrs postdose in Cycle 4; Predose in all later cycles. Maximum infusion length = 2 hrs.
Time frame: Baseline up to 28-days after last dose (up to approximately 25 months) (please see outcome measure description for detailed time frame)
Minimum Observed Serum Concentration (Cmin) of RO6895882
Time frame: Part 1/2/3: Predose (Hr 0) in all cycles (maximum up to 25 months) (cycle length = 1, 2, or 3 weeks, respectively)
Maximum Observed Serum Concentration (Cmax) of RO6895882
Part 1: Predose (Hr 0), 1 hr post SoI, at EoI, 2, 4, 24, 72, 96, 216 hrs post Day 1 dose. Part 2/3: qw schedule (1 Cycle = 1 week): Predose, 1 hr post SoI, at EoI, 2, 4 hrs after EoI, 24, 72, 96 hrs postdose in Cycle 1, 5 (include 120 hrs postdose); Predose, 24, 96 hrs postdose in Cycle 2, 3, 4; Predose in any later cycle. Part 2/3: q2w schedule (1 Cycle = 2 weeks): Predose, 1 hr post SoI, at EoI, 2, 4, 24, 72, 96, 120, 168, 312 hrs postdose in Cycle 1, 4 (exclude 312 hrs postdose); Predose, 24, 96, 168 hrs postdose in Cycle 2; Predose in all later cycles. Part 2/3: q3w schedule (1 Cycle = 3 weeks): Predose, 1 hr post SoI, at EoI, 2, 4, 24, 72, 96, 120, 168, 312, 480 hrs postdose in Cycle 1; Predose, 24, 96, 312 hrs postdose in Cycle 2; Predose, at EoI, 1, 2, 4 hrs post EoI, 24, 72, 96, 120, 168, 312 hrs postdose in Cycle 3; Predose, 24, 72, 120, 312 hrs postdose in Cycle 4; Predose in all later cycles. Maximum infusion length = 2 hrs.
Time frame: Baseline up to 28-days after last dose (up to approximately 25 months) (please see outcome measure description for detailed time frame)
Clearance (CL) of RO6895882
Part 1: Predose (Hr 0), 1 hr post SoI, at EoI, 2, 4, 24, 72, 96, 216 hrs post Day 1 dose. Part 2/3: qw schedule (1 Cycle = 1 week): Predose, 1 hr post SoI, at EoI, 2, 4 hrs after EoI, 24, 72, 96 hrs postdose in Cycle 1, 5 (include 120 hrs postdose); Predose, 24, 96 hrs postdose in Cycle 2, 3, 4; Predose in any later cycle. Part 2/3: q2w schedule (1 Cycle = 2 weeks): Predose, 1 hr post SoI, at EoI, 2, 4, 24, 72, 96, 120, 168, 312 hrs postdose in Cycle 1, 4 (exclude 312 hrs postdose); Predose, 24, 96, 168 hrs postdose in Cycle 2; Predose in all later cycles. Part 2/3: q3w schedule (1 Cycle = 3 weeks): Predose, 1 hr post SoI, at EoI, 2, 4, 24, 72, 96, 120, 168, 312, 480 hrs postdose in Cycle 1; Predose, 24, 96, 312 hrs postdose in Cycle 2; Predose, at EoI, 1, 2, 4 hrs post EoI, 24, 72, 96, 120, 168, 312 hrs postdose in Cycle 3; Predose, 24, 72, 120, 312 hrs postdose in Cycle 4; Predose in all later cycles. Maximum infusion length = 2 hrs.
Time frame: Baseline up to 28-days after last dose (up to approximately 25 months) (please see outcome measure description for detailed time frame)
Volume of Distribution at Steady State (Vss) of RO6895882
Part 1: Predose (Hr 0), 1 hr post SoI, at EoI, 2, 4, 24, 72, 96, 216 hrs post Day 1 dose. Part 2/3: qw schedule (1 Cycle = 1 week): Predose, 1 hr post SoI, at EoI, 2, 4 hrs after EoI, 24, 72, 96 hrs postdose in Cycle 1, 5 (include 120 hrs postdose); Predose, 24, 96 hrs postdose in Cycle 2, 3, 4; Predose in any later cycle. Part 2/3: q2w schedule (1 Cycle = 2 weeks): Predose, 1 hr post SoI, at EoI, 2, 4, 24, 72, 96, 120, 168, 312 hrs postdose in Cycle 1, 4 (exclude 312 hrs postdose); Predose, 24, 96, 168 hrs postdose in Cycle 2; Predose in all later cycles. Part 2/3: q3w schedule (1 Cycle = 3 weeks): Predose, 1 hr post SoI, at EoI, 2, 4, 24, 72, 96, 120, 168, 312, 480 hrs postdose in Cycle 1; Predose, 24, 96, 312 hrs postdose in Cycle 2; Predose, at EoI, 1, 2, 4 hrs post EoI, 24, 72, 96, 120, 168, 312 hrs postdose in Cycle 3; Predose, 24, 72, 120, 312 hrs postdose in Cycle 4; Predose in all later cycles. Maximum infusion length = 2 hrs.
Time frame: Baseline up to 28-days after last dose (up to approximately 25 months) (please see outcome measure description for detailed time frame)
Half-life (t1/2) of RO6895882
Part 1: Predose (Hr 0), 1 hr post SoI, at EoI, 2, 4, 24, 72, 96, 216 hrs post Day 1 dose. Part 2/3: qw schedule (1 Cycle = 1 week): Predose, 1 hr post SoI, at EoI, 2, 4 hrs after EoI, 24, 72, 96 hrs postdose in Cycle 1, 5 (include 120 hrs postdose); Predose, 24, 96 hrs postdose in Cycle 2, 3, 4; Predose in any later cycle. Part 2/3: q2w schedule (1 Cycle = 2 weeks): Predose, 1 hr post SoI, at EoI, 2, 4, 24, 72, 96, 120, 168, 312 hrs postdose in Cycle 1, 4 (exclude 312 hrs postdose); Predose, 24, 96, 168 hrs postdose in Cycle 2; Predose in all later cycles. Part 2/3: q3w schedule (1 Cycle = 3 weeks): Predose, 1 hr post SoI, at EoI, 2, 4, 24, 72, 96, 120, 168, 312, 480 hrs postdose in Cycle 1; Predose, 24, 96, 312 hrs postdose in Cycle 2; Predose, at EoI, 1, 2, 4 hrs post EoI, 24, 72, 96, 120, 168, 312 hrs postdose in Cycle 3; Predose, 24, 72, 120, 312 hrs postdose in Cycle 4; Predose in all later cycles. Maximum infusion length = 2 hrs.
Time frame: Baseline up to 28-days after last dose (up to approximately 25 months) (please see outcome measure description for detailed time frame)
Count of Cluster of Differentiation (CD) 4+ Cells Analyzed by Flow Cytometry
Part 1: Predose (Hr 0), at EoI, Day (D) 2. Part 2/3: qw schedule (1 cycle = 1 week): Cycle (C) 1: Predose, at EoI, D2, D5; C2: Predose, at EoI, D2; C3: Predose, at EoI; C4: Predose. Part 2/3: q2w schedule (1 cycle = 2 weeks): C1, C4: Predose, at EoI, D2, D5, C2: Predose, at EoI, D2; C3: Predose, at EoI. Part 2/3: q3w schedule (1 cycle = 3 weeks): C1: Predose, at EoI, Day 2, 5, 14; C3: Predose, at EoI, Day 2, 5; C2, C4: Predose, at EoI, Day 2. Maximum infusion length = 2 hrs.
Time frame: Baseline up to 28-days after last dose (up to approximately 25 months) (please see outcome measure description for detailed time frame)
Count of CD8+ Cells Analyzed by Flow Cytometry
Part 1: Predose (Hr 0), at EoI, Day (D) 2. Part 2/3: qw schedule (1 cycle = 1 week): Cycle (C) 1: Predose, at EoI, D2, D5; C2: Predose, at EoI, D2; C3: Predose, at EoI; C4: Predose. Part 2/3: q2w schedule (1 cycle = 2 weeks): C1, C4: Predose, at EoI, D2, D5, C2: Predose, at EoI, D2; C3: Predose, at EoI. Part 2/3: q3w schedule (1 cycle = 3 weeks): C1: Predose, at EoI, Day 2, 5, 14; C3: Predose, at EoI, Day 2, 5; C2, C4: Predose, at EoI, Day 2. Maximum infusion length = 2 hrs.
Time frame: Baseline up to 28-days after last dose (up to approximately 25 months) (please see outcome measure description for detailed time frame)
Count of B Lymphocyte Cells Analyzed by Flow Cytometry
Part 1: Predose (Hr 0), at EoI, Day (D) 2. Part 2/3: qw schedule (1 cycle = 1 week): Cycle (C) 1: Predose, at EoI, D2, D5; C2: Predose, at EoI, D2; C3: Predose, at EoI; C4: Predose. Part 2/3: q2w schedule (1 cycle = 2 weeks): C1, C4: Predose, at EoI, D2, D5, C2: Predose, at EoI, D2; C3: Predose, at EoI. Part 2/3: q3w schedule (1 cycle = 3 weeks): C1: Predose, at EoI, Day 2, 5, 14; C3: Predose, at EoI, Day 2, 5; C2, C4: Predose, at EoI, Day 2. Maximum infusion length = 2 hrs
Time frame: Baseline up to 28-days after last dose (up to approximately 25 months) (please see outcome measure description for detailed time frame)
Count of Natural Killer (NK) Cells Analyzed by Flow Cytometry
Part 1: Predose (Hr 0), at EoI, Day (D) 2. Part 2/3: qw schedule (1 cycle = 1 week): Cycle (C) 1: Predose, at EoI, D2, D5; C2: Predose, at EoI, D2; C3: Predose, at EoI; C4: Predose. Part 2/3: q2w schedule (1 cycle = 2 weeks): C1, C4: Predose, at EoI, D2, D5, C2: Predose, at EoI, D2; C3: Predose, at EoI. Part 2/3: q3w schedule (1 cycle = 3 weeks): C1: Predose, at EoI, Day 2, 5, 14; C3: Predose, at EoI, Day 2, 5; C2, C4: Predose, at EoI, Day 2. Maximum infusion length = 2 hrs
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Time frame: Baseline up to 28-days after last dose (up to approximately 25 months) (please see outcome measure description for detailed time frame)
Count of Monocytes Cells Analyzed by Flow Cytometry
Part 1: Predose (Hr 0), at EoI, Day (D) 2. Part 2/3: qw schedule (1 cycle = 1 week): Cycle (C) 1: Predose, at EoI, D2, D5; C2: Predose, at EoI, D2; C3: Predose, at EoI; C4: Predose. Part 2/3: q2w schedule (1 cycle = 2 weeks): C1, C4: Predose, at EoI, D2, D5, C2: Predose, at EoI, D2; C3: Predose, at EoI. Part 2/3: q3w schedule (1 cycle = 3 weeks): C1: Predose, at EoI, Day 2, 5, 14; C3: Predose, at EoI, Day 2, 5; C2, C4: Predose, at EoI, Day 2. Maximum infusion length = 2 hrs.
Time frame: Baseline up to 28-days after last dose (up to approximately 25 months) (please see outcome measure description for detailed time frame)
Percentage of Participants With Objective Response Assessed According to Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.1 (v 1.1)
Time frame: From Screening until disease progression or death (up to approximately 25 months)
Percentage of Participants With Stable Disease Assessed According to RECIST v 1.1
Time frame: From Screening until disease progression or death (up to approximately 25 months)
Percentage of Participants With Disease Control Assessed According to RECIST v 1.1
Time frame: From Screening until disease progression or death (up to approximately 25 months)
Progression-Free Survival Assessed According to RECIST v 1.1
Time frame: From Screening until disease progression or death (up to approximately 25 months)