This Will be an Open-label, Three-period, Fixed-sequence Study to Evaluate the Drug-drug Interaction, Pharmacokinetics and Safety of Dutasteride and Tamsulosin When Administered Alone and In-combination in Chinese Healthy Male Volunteers. The Study Will Last Approximately Eleven Weeks. Blood Samples
This will be an open-label, three-period, fixed-sequence study to evaluate the drug-drug interaction, pharmacokinetics and safety of dutasteride and tamsulosin when administered alone and in-combination in Chinese healthy male volunteers.
|Study Design:||Endpoint Classification: Pharmacokinetics Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||An Open Label, Single Sequence, Three Period, Drug-Drug Interaction Study To Examine The Pharmacokinetics Of Dutasteride And Tamsulosin And Their Interactions In Chinese Male Healthy Volunteers|
- To evaluate the pharmacokinetics of dutasteride and tamsulosin when dosed alone and in combination [ Time Frame: Pre-dose (within 10 minutes of the dutasteride administration), 0.25, 0.5, 1, 2, 3, 4, 6, 8, 12, 16, 24, 48 and 72 hours post dose.Pre-dose (within 10 minutes of tamsulosin administration) on Day 1, Day 2 and Day 3 and pre-dose, 0.25, 0.5, 1, 2, 3, 4, 6, ] [ Designated as safety issue: No ]Serum dutasteride AUC (0-t), Cmax, tmax, following 0.5mg single dose administration with and without tamsulosin 0.2mg q24h. Serum tamsulosin AUC(0-τ), Cmax, tmax, Cτ and CL/F following 0.2mg q24h administration with and without dutasteride 0.5mg single dose.
- To evaluate the safety and tolerability of dutasteride and tamsulosin when administered alone and in combination. [ Time Frame: 11 Weeks ] [ Designated as safety issue: Yes ]AEs, SAEs, concurrent medication, changes in clinical laboratory values, ECG, and vital signs assessments.
|Study Start Date:||October 2013|
|Study Completion Date:||January 2014|
|Primary Completion Date:||January 2014 (Final data collection date for primary outcome measure)|
Experimental: Dutasteride with/ without Tamsulosin
All subjects will be assigned to the same treatment group
Drug: Dutasteride and Tamsulosin
0.5mg dutasteride once a day on Day 1 Period A , and Day 5 Period C,0.2mg Tamsulosin once a day on Day 1 to Day 7 in Period B and Period C
This will be an open-label, three-period, fixed-sequence study to evaluate the drug-drug interaction, pharmacokinetics and safety of dutasteride and tamsulosin when administered alone and in-combination in Chinese healthy male volunteers. The study will last approximately eleven weeks. Blood samples for pharmacokinetic analysis will be taken at pre-specified times. Safety will be assessed by measurement of concurrent medication,changes in clinical laboratory values, ECG, vital signs, and collection of adverse events.Approximately 24 healthy adult males will be enrolled such that approximately 18 subjects complete dosing and critical assessments.This will be an open label, single sequence, three-period study. Approximately 24 healthy male volunteers will be enrolled. At the first study period, the subjects will receive 0.5mg of dutasteride (Dut) as a single dose (SD) under fed conditions. Serum sampling will take place pre-dose and over the next 72 hours post dose (Per. A). After a 28-30 days washout, the subjects will be brought in and be given 0.2mg tamsulosin as Harnal D tablet for 7 days with the morning meal. Serum sampling for pharmacokinetics of tamsulosin will take place at day 1, day 2 and day 3 pre-dose and at days 4 for 24 hours (Per. B). On the next day (Day 5), the subjects will be given both 0.2mg tamsulosin Harnal D tablet and 0.5mg of dutasteride. Serum sampling will take place at Day 5 pre-dose and followed for 72 hours (Per. C) for both dutasteride and tamsulosin. Subjects will participate in a follow-up visit approximately 2 weeks after the last dose of study drug.
Please refer to this study by its ClinicalTrials.gov identifier: NCT01957189
|GSK Investigational Site|
|Shanghai, China, 200030|
|Study Director:||GSK Clinical Trials||GlaxoSmithKline|