This randomized, single center, adaptive single ascending dose (Part 1) and multiple ascending dose (Part 2) study is designed to assess the safety, tolerability, pharmacokinetic, and pharmacodynamics following an oral administration of RO6889450 versus placebo in healthy volunteers. The anticipated duration of this study is approximately 18 weeks.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
164
PRA Health Sciences Early Development Services
Zuidlaren, Netherlands
Percentage of Participants With Dose Limiting Toxicities After Single Ascending Dose (SAD) - Part 1
Time frame: up to 22 days
Area Under the Curve from Time Zero to end of dosing interval (AUCtau) After Multiple Oral Ascending Doses - Part 2
Time frame: Part 2: predose, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hr postdose on Day 1; predose on Days 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, predose, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hr postdose on Day 14, Days 15, 16, 17, 19, 20, 21
Percentage of Participants With Dose Limiting Toxicities After Multiple Oral Ascending Doses (MAD) - Part 2
Time frame: up to 35 days
Area Under the Curve From Time Zero to Extrapolated Infinite Time [AUC (0 to inf)] After Single Ascending Dose - Part 1
Time frame: Part 1: predose, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hours (hr) postdose on Day 1; Day 2, 3, 4, 6, 7, 8
RO6889450 Maximum Plasma Concentration (Cmax) After Single Oral Ascending Doses
Time frame: Part 1: predose and 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hours postdose on Day 1, Days 2, 3, 4, 6, 7, 8
RO6889450 Maximum Plasma Concentration (Cmax) After Multiple Oral Ascending Doses
Time frame: Part 2: predose, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hours postdose on Day 1, predose on Days 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, predose and 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hours postdose on Day 14, Days 15, 16, 17, 19, 20, 21
RO6889450 Minimum Observed Plasma Trough Concentration (Cmin)
Time frame: Part 2: predose on Days 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, predose and 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hours postdose on Day 14, Days 15
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Time to Reach Maximum Observed Plasma Concentration (Tmax) After Multiple Ascending Dose - Part 2
Time frame: predose, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hr postdose, Days 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, predose, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hr postdose on Day 14, Days 15, 16, 17, 19, 20, 21
Terminal Rate Constant After Multiple Ascending Dose - Part 2
Time frame: Part 2: predose, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hr postdose on Day 1, predose on Days 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, predose, 0.5,1,1.5, 2, 2.5, 3,4, 6, 8, 12, 16 hr postdose on Day 14, Days 15, 16, 17, 19, 20, 21
Apparent Terminal Half-Life (t1/2) After Multiple Ascending Dose - Part 2
Time frame: Part 2: predose, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hr postdose on Day 1, predose on Days 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, predose, 0.5, 1, 1.5, 2, 2.5, 3,4, 6, 8, 12, 16 hr postdose on Day 14, Days 15, 16, 17, 19, 20, 21
Apparent Oral Clearance (CL/F) After Multiple Ascending Dose - Part 2
Time frame: Part 2: predose, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hr postdose on Day 1, predose on Days 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, predose, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hr postdose on Day 14, Days 15, 16, 17, 19, 20, 21
Cumulative Amount Excreted Unchanged in Urine (Ae) After Multiple Ascending Dose - Part 2
Time frame: Part 2: predose, 0 to 6, 6 to 12, 12 to 24 hours postdose on Day 1, 14, 24 to 48 and 48 to 72 hours after Day 14 dosing
Renal Clearance (CLR) After Multiple Ascending Dose - Part 2
Time frame: Part 2: predose, 0 to 6, 6 to 12, 12 to 24 hours postdose on Day 1, 14, 24 to 48 and 48 to 72 hours after Day 14 dosing
Fasting Glucose Concentrations After Multiple Ascending Dose - Part 2
Time frame: Part 2: Baseline, Days 7, 15, 17
Plasma Concentration of Prolactin - Part 2
Time frame: Part 2: Day 1, 14, 15
Scotopic Pupil Diameter as Assessed by Pupillometer - Part 2
Time frame: Part 2: Day 1, 2, 14, 15
Time to Reach Maximum Observed Plasma Concentration (Tmax) After Single Ascending Dose - Part 1
Time frame: Part 1: predose, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hours (hr) postdose on Day 1, Days 2, 3, 4, 6, 7, 8
Last Measurable Concentration (Clast) After Single Ascending Dose - Part 1
Time frame: Part 1: predose and 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hours postdose on Day 1, Days 2, 3, 4, 6, 7, 8
Time to Last Measurable Concentration (Tlast) After Single Ascending Dose - Part 1
Time frame: Part 1: predose and 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hours postdose on Day 1, Days 2, 3, 4, 6, 7, 8
Terminal Rate Constant After Single Ascending Dose - Part 1
Time frame: Part 1: predose, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hr postdose on Day 1, Days 2, 3, 4, 6, 7, 8
Apparent Terminal Half-Life (t1/2) After Single Ascending Dose - Part 1
Time frame: Part 1: predose, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hr postdose on Day 1, Days 2, 3, 4, 6, 7, 8
Area Under the Plasma Concentration Versus Time Curve From Zero to 24 Hours Post-Dose (AUC0-24h) After Single Ascending Dose - Part 1
Time frame: Part 1: predose and 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hours postdose on Day 1, Days 2, 3, 4, 6, 7, 8
Area Under the Plasma Concentration Versus Time Curve up to the Last Measurable Concentration (AUC0-last) After Single Ascending Dose - Part 1
Time frame: Part 1: predose and 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hours postdose on Day 1, Days 2, 3, 4, 6, 7, 8
Apparent Oral Clearance (CL/F) After Single Ascending Dose - Part 1
Time frame: Part 1: predose, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hr postdose on Day 1, Days 2, 3, 4, 6, 7, 8
Cumulative Amount Excreted Unchanged in the Urine (Ae) After Single Ascending Dose - Part 1
Time frame: Part 1: predose, 0 to 6, 6 to 12, 12 to 24 hours postdose on Day 1, 24 to 48, 48 to 72 hours after Day 1 dosing
Renal Clearance (CLR) After Single Ascending Dose - Part 1
Time frame: Part 1: predose, 0 to 6, 6 to 12, 12 to 24 hours postdose on Day 1, 24 to 48, 48 to 72 hours after Day 1 dosing
Accumulation Ratio for AUCtau (RAUC), Calculated as Day 14 AUC0-tau/Day 1 AUC0-tau - Part 2
Time frame: predose, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16, 24 hours (hr) postdose on Day 1; predose, 0.5,1,1.5, 2, 2.5, 3,4, 6, 8, 12, 16, 24 hr postdose on Day 14
Accumulation Ratio for Cmax (RCmax), Calculated as Day 14 Cmax / Day 1 Cmax - Part 2
Time frame: predose, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hours (hr) postdose on Day 1; predose, 0.5,1,1.5, 2, 2.5, 3,4, 6, 8, 12, 16, 24 hr postdose on Day 14
Accumulation Ratio for Ctrough RCtrough, Calculated as Day 14 Ctrough / Day 1 Ctrough - Part 2
Time frame: predose, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16 hours (hr) postdose on Day 1; predose, 0.5,1,1.5, 2, 2.5, 3,4, 6, 8, 12, 16, 24 hr postdose on Day 14
Fasting Glucose Concentrations After Single - Part 1
Time frame: Part 1: Baseline, Day 4
Change From Baseline in Glucose Level at Day 14 - Part 2
Time frame: Baseline, Day 14
Change From Baseline in Insulin Level at Day 14 - Part 2
Time frame: Baseline, Day 14
Change From Baseline in C-peptide Level at Day 14 - Part 2
Time frame: Baseline, Day 14
Change From Baseline in Gastric Inhibitory Polypeptide (GIP) Level at Day 14 - Part 2
Time frame: Baseline, Day 14
Change From Baseline in Glucagon-like Peptide-1 (GLP-1) Level at Day 14 - Part 2
Time frame: Baseline, Day 14
Columbia Suicide-Severity Rating Scale (C-SSRS) Scores - Part 1
Time frame: Part 1: Day 4
Columbia Suicide-Severity Rating Scale (C-SSRS) Scores - Part 2
Time frame: Part 2: Day 15
Capillary Blood Glucose Levels - Part 1
Time frame: Part 1: Baseline through Day 4
Capillary Blood Glucose Levels - Part 2
Time frame: Part 2: Baseline through Day 17
Urine Concentration of Dopamine Metabolite - Part 2
Time frame: Baseline, Day 12, Day 13
Plasma Concentration of Prolactin - Part 1
Time frame: Part 1: Day 1, Day 2
Change From Baseline in Body Weight at Days 7 and 15 - Part 2
Time frame: Baseline, Day 7, 15
Addiction Research Center Inventory (ARCI-49) Questionnaire Score - Part 2
Time frame: Baseline, Day 1, 7, 14
Scotopic Pupil Diameter as Assessed by Pupillometer - Part 1
Time frame: Part 1: Day 1, 2
Change From Baseline in Regional Cerebral Blood Flow (CBF), as Assessed by Functional Magnetic Resonance Imaging (fMRI) at Days 7 or 8, 12 or 13
Time frame: Baseline, Day 7 or 8, 12 or 13
Facial Expression Recognition Task (FERT) Score, as Assessed by Emotional Test Battery (ETB) - Part 2
Time frame: Baseline, Day 12 or 13
Reward Learning Task Score, as Assessed by Effort-Based Paradigms - Part 2
Time frame: Baseline, Day 12 or 13