This two-group study will investigate the effect of food (Group 1) and esomeprazole (Group 2) on the single oral dose pharmacokinetics of alectinib in healthy volunteers. Participants in Group 1 will be randomly assigned to a two period treatment sequence (AB or BA) in which they will receive a single, oral dose of alectinib per period separated by at least 10 days. Each participant will receive single, oral doses alectinib given under fasted conditions (Treatment A) or following the ingestion of a high fat, high calorie meal (Treatment B) as determined by their assigned sequence. Participants in Group 2 will be given a single, oral dose of alectinib following a standard meal. After a washout period of at least 10 days, they will receive an oral dose of esomeprazole (40 mg) once daily for 6 days. On the 6th day of esomeprazole administration, a single, oral dose alectinib will be given after ingestion of a standard meal. In all groups, pharmacokinetics will be assessed in the 4 days following alectinib administration.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
42
A single 600-mg oral dose of alectinib will be administered in a fasted or fed condition.
Esomeprazole 40 mg will be administered orally once daily for 6 days prior to alectinib administration.
High fat and calorie meal served prior to alectinib administration
Standard meal served prior to alectinib administration
Unnamed facility
Austin, Texas, United States
Maximum Observed Plasma Concentration (Cmax) of Alectinib: Group 1
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours after dosing in each treatment arm
Cmax of Alectinib: Group 2
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib dose in each treatment period
Area Under the Curve From Time Zero to Extrapolated Infinite Time (AUC0-inf) of Alectinib: Group 1
AUC (0-inf) = Area under the plasma concentration versus time curve from time zero (pre-dose) to extrapolated infinite time (0-inf). It is obtained from AUC (0 - t) plus AUC (t - inf).
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours after dosing in each treatment arm
AUC0-inf of Alectinib: Group 2
AUC (0-inf) = Area under the plasma concentration versus time curve from time zero (pre-dose) to extrapolated infinite time (0-inf). It is obtained from AUC (0 - t) plus AUC (t - inf).
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib dose in each treatment period
Cmax of RO5468924: Group 1
RO5468924 is M4 metabolite of alectinib.
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours after dosing in each treatment arm
Cmax of RO5468924: Group 2
RO5468924 is M4 metabolite of alectinib.
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib dose in each treatment period
AUC0-inf of RO5468924: Group 1
AUC (0-inf) = Area under the plasma concentration versus time curve from time zero (pre-dose) to extrapolated infinite time (0-inf). It is obtained from AUC (0 - t) plus AUC (t - inf). RO5468924 is M4 metabolite of alectinib.
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours after dosing in each treatment arm
AUC0-inf of RO5468924: Group 2
AUC (0-inf) = Area under the plasma concentration versus time curve from time zero (pre-dose) to extrapolated infinite time (0-inf). It is obtained from AUC (0 - t) plus AUC (t - inf). RO5468924 is M4 metabolite of alectinib.
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib dose in each treatment period
Metabolite/Parent Ratio for AUC0-inf: Group 1
AUC (0-inf) = Area under the plasma concentration versus time curve from time zero (pre-dose) to extrapolated infinite time (0-inf). It is obtained from AUC (0 - t) plus AUC (t - inf). RO5468924 is M4 metabolite of alectinib. The ratio is molecular weight adjusted.
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours after dosing in each treatment arm
Metabolite/Parent Ratio for AUC0-inf: Group 2
AUC (0-inf) = Area under the plasma concentration versus time curve from time zero (pre-dose) to extrapolated infinite time (0-inf). It is obtained from AUC (0 - t) plus AUC (t - inf). RO5468924 is M4 metabolite of alectinib. The ratio is molecular weight adjusted.
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib dose in each treatment period
Area Under the Curve From Time Zero to Last Quantifiable Concentration (AUClast) of Alectinib: Group 1
Area under the plasma concentration time-curve from zero to the last measured concentration (AUClast).
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours after dosing in each treatment arm
AUClast of Alectinib: Group 2
Area under the plasma concentration time-curve from zero to the last measured concentration (AUClast).
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib dose in each treatment period
AUClast of RO5468924: Group 1
Area under the plasma concentration time-curve from zero to the last measured concentration (AUClast). RO5468924 is M4 metabolite of alectinib.
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours after dosing in each treatment arm
AUClast of RO5468924: Group 2
Area under the plasma concentration time-curve from zero to the last measured concentration (AUClast). RO5468924 is M4 metabolite of alectinib.
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib dose in each treatment period
Time to Reach Maximum Observed Plasma Concentration (Tmax) of Alectinib: Group 1
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours after dosing in each treatment arm
Tmax of Alectinib: Group 2
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib dose in each treatment period
Tmax of RO5468924: Group 1
RO5468924 is M4 metabolite of alectinib.
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours after dosing in each treatment arm
Tmax of RO5468924: Group 2
RO5468924 is M4 metabolite of alectinib.
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib dose in each treatment period
Terminal Half-life (t1/2) of Alectinib: Group 1
Plasma decay half-life is the time measured for the plasma concentration to decrease by one half.
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours after dosing in each treatment arm
t1/2 of Alectinib: Group 2
Plasma decay half-life is the time measured for the plasma concentration to decrease by one half.
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib dose in each treatment period
t1/2 of RO5468924: Group 1
Plasma decay half-life is the time measured for the plasma concentration to decrease by one half. RO5468924 is M4 metabolite of alectinib.
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours after dosing in each treatment period
t1/2 of RO5468924: Group 2
Plasma decay half-life is the time measured for the plasma concentration to decrease by one half. RO5468924 is M4 metabolite of alectinib.
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib dose in each treatment period
Apparent Oral Clearance (CL/F) for Alectinib: Group 1
Clearance of a drug is a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. Clearance obtained after oral dose (apparent oral clearance) is influenced by the fraction of the dose absorbed. Drug clearance is a quantitative measure of the rate at which a drug substance is removed from the blood.
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours after dosing in each treatment arm
CL/F for Alectinib: Group 2
Clearance of a drug is a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. Clearance obtained after oral dose (apparent oral clearance) is influenced by the fraction of the dose absorbed. Drug clearance is a quantitative measure of the rate at which a drug substance is removed from the blood.
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib dose in each treatment period
Apparent Volume of Distribution (Vz/F) for Alectinib: Group 1
Volume of distribution is defined as the theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired plasma concentration of a drug. Vz/F is influenced by the fraction absorbed.
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours after dosing in each treatment arm
Vz/F for Alectinib: Group 2
Volume of distribution is defined as the theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired plasma concentration of a drug. Vz/F is influenced by the fraction absorbed.
Time frame: Predose (0 hours) and at 0.5, 1, 2, 4, 6, 8, 10, 12, 24, 36, 48, 72, and 96 hours post alectinib dose in each treatment period
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