Comparative Bioavailability of Two Fixed Dose Combination (FDC) Formulations of Dutasteride and Tamsulosin Hydrochloride Relative to Co-administration of Dutasteride With Tamsulosin Hydrochloride in Healthy Male Subjects Under Fed and Fasted States

NCT ID: NCT02184585

Last Updated: 2018-06-19

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE1
• Total Enrollment: 84 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2014-07-10
• Study Completion Date: 2015-02-23

Brief Summary

This study will be an open-label, randomized, single dose, three way crossover study in healthy male subjects. The aim of the study is to evaluate the pharmacokinetic parameters of two formulations of a fixed dose combination (FDC) capsule of dutasteride and tamsulosin hydrochloride (HCl) (0.5 milligram [mg]/0.2 mg) relative to co-administration of dutasteride 0.5 mg capsules and tamsulosin hydrochloride 0.2 mg tablets in both the fed and fasted states. Approximately 84 healthy adult male subjects will be enrolled into the study and split into two cohorts (fed and fasted), allowing for approximately 36 subjects to complete each cohort. Subjects from both cohorts will receive single oral doses in 3 treatment periods and be randomized to one of six different treatment sequences (ABC, ACB, BAC, BCA, CAB, CBA) wherein A= FDC1: Dutasteride and tamsulosin HCl (0.5 mg/0.2 mg), B= FDC2: Dutasteride and tamsulosin HCl (0.5 mg/0.2 mg), C= Co-administration of commercial formulations of dutasteride(0.5mg) and tamsulosin HCl (0.2mg). Each treatment period will be separated by a minimum 28 day washout period. Blood samples for pharmacokinetic analysis will be taken at regular intervals after dosing. Safety will be assessed by measurement of blood pressure, heart rate and review of adverse events.

Conditions

Prostatic Hyperplasia

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: CROSSOVER
• Primary Study Purpose: OTHER
• Blinding Strategy: NONE

Study Groups

Cohort 1: Fasted state

Treatment will be administered orally to 42 subjects in the fasted state. Subjects will be required to fast overnight (minimum 10 hours) and for a minimum of 4 hours after each dose. Subjects will participate in 3 treatment periods and assigned to one of six treatment sequences (ABC, ACB, BAC, BCA, CAB, CBA) in accordance with the randomization schedule generated by Clinical Statistics. The three treatment periods will be separated by a minimum washout period of 28 days

Group Type: EXPERIMENTAL

Treatment sequence A

Intervention Type: DRUG

FDC 1 - Fixed dose combination capsule of dutasteride and tamsulosin hydrochloride (0.5 mg/0.2 mg). Each capsule will contain dutasteride (0.5 mg) (CJ) and tamsulosin pellets (0.2 mg) version 1.

Treatment sequence B

Intervention Type: DRUG

FDC 2 - Fixed dose combination capsule of dutasteride and tamsulosin hydrochloride (0.5 mg/0.2 mg). Each capsule will contain dutasteride (0.5 mg) (CL) and tamsulosin pellets (0.2 mg) version 2.

Treatment sequence C

Intervention Type: DRUG

Co-administration of dutasteride 0.5 mg capsule (Oblong, size 6, dull yellow capsules: Commercially available) and tamsulosin hydrochloride 0.2 mg tablet (White, round standard convex tablet: Commercially available).

Cohort 2 : Fed state

Treatment will be administered orally to 42 subjects in the fed state (high fat breakfast). Dosing will take place within 30 minutes of the start of the meal. Subjects will participate in 3 treatment periods and assigned to one of six treatment sequences (ABC, ACB, BAC, BCA, CAB, CBA) in accordance with the randomization schedule generated by Clinical Statistics. The three treatment periods will be separated by a minimum washout period of 28 days

Group Type: EXPERIMENTAL

Treatment sequence A

Intervention Type: DRUG

FDC 1 - Fixed dose combination capsule of dutasteride and tamsulosin hydrochloride (0.5 mg/0.2 mg). Each capsule will contain dutasteride (0.5 mg) (CJ) and tamsulosin pellets (0.2 mg) version 1.

Treatment sequence B

Intervention Type: DRUG

FDC 2 - Fixed dose combination capsule of dutasteride and tamsulosin hydrochloride (0.5 mg/0.2 mg). Each capsule will contain dutasteride (0.5 mg) (CL) and tamsulosin pellets (0.2 mg) version 2.

Treatment sequence C

Intervention Type: DRUG

Co-administration of dutasteride 0.5 mg capsule (Oblong, size 6, dull yellow capsules: Commercially available) and tamsulosin hydrochloride 0.2 mg tablet (White, round standard convex tablet: Commercially available).

Interventions

Treatment sequence A

FDC 1 - Fixed dose combination capsule of dutasteride and tamsulosin hydrochloride (0.5 mg/0.2 mg). Each capsule will contain dutasteride (0.5 mg) (CJ) and tamsulosin pellets (0.2 mg) version 1.

Intervention Type: DRUG

Treatment sequence B

FDC 2 - Fixed dose combination capsule of dutasteride and tamsulosin hydrochloride (0.5 mg/0.2 mg). Each capsule will contain dutasteride (0.5 mg) (CL) and tamsulosin pellets (0.2 mg) version 2.

Intervention Type: DRUG

Treatment sequence C

Co-administration of dutasteride 0.5 mg capsule (Oblong, size 6, dull yellow capsules: Commercially available) and tamsulosin hydrochloride 0.2 mg tablet (White, round standard convex tablet: Commercially available).

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

• Males aged between 18 and 65 years of age inclusive, at the time of signing the informed consent.

Exclusion Criteria

• Body weight >=50 kilogram (kg) and body mass index (BMI) within the range 18 - 32 kg/m^2 (square meter) (inclusive).
• Male subjects with female partners of child-bearing potential must agree to use a condom. This criterion must be followed from the time of the first dose of study medication until 50 days post-last dose.
• Capable of giving written informed consent, which includes compliance with the requirements and restrictions listed in the consent form.
• Able to swallow and retain oral medication.
• Aspartate aminotransferase (AST) and Alanine aminotransferase (ALT) <2x (Upper limit of normal) ULN; alkaline phosphatase and bilirubin <=1.5xULN (isolated bilirubin >1.5xULN is acceptable if bilirubin is fractionated and direct bilirubin <35%).
• Based on single or averaged corrected QT (QTc) values of triplicate electrocardiograms (ECGs) obtained over a brief recording period: QT duration corrected for heart rate by Fridericia's formula (QTcF) <450 milliseconds (msec)

Criteria Based Upon Medical Histories

• Current or chronic history of liver disease, or known hepatic or biliary abnormalities (with the exception of Gilbert's syndrome or asymptomatic gallstones).
• History of sensitivity to any of the study medications, or components thereof or a history of drug or other allergy that, in the opinion of the investigator or GlaxoSmithKline (GSK) Medical Monitor, contraindicates their participation.
• History of postural hypotension, dizziness, poor hydration, vertigo, vaso-vagal reactions or any other signs and symptoms of orthostasis, which in the opinion of the investigator could be exacerbated by tamsulosin and result in putting the subject at risk of injury.
• History of regular alcohol consumption within 6 months of the study defined for US sites as: an average weekly intake of >14 drinks for males or >7 drinks for females. One drink is equivalent to 12 gram (g) of alcohol: 12 ounces (360 millilitre [mL]) of beer, 5 ounces (150 mL) of wine or 1.5 ounces (45 mL) of 80 proof distilled spirits.
• History of diabetes or peptic ulcer disease which is uncontrolled by medical management.
• History of breast cancer or clinical breast examination finding suggestive of malignancy. History of malignancy within the past five years, except for basal cell carcinoma of the skin. Subjects with a prior malignancy who have had no evidence of disease for at least the past 5 years are eligible.
• Prior medical history or evidence of prostate cancer (e.g., positive biopsy, or suspicious ultrasound, or suspicious digital rectal examination [DRE]). Patients with suspicious ultrasound or DRE who have had a negative biopsy within the preceding 6 months and stable prostate specific antigen (PSA) are eligible for the study. Note: The investigator should make every appropriate effort to exclude the possibility of prostate cancer, including consideration of prostate biopsy in any subject with a known abnormal PSA.

Criteria Based Upon Diagnostic Assessments

• A positive pre-study Hepatitis B surface antigen or positive Hepatitis C antibody result within 3 months of screening;
• A positive pre-study drug/alcohol screen.
• A positive test for Human Immunodeficiency Virus (HIV) antibody. Other Criteria
• Where participation in the study would result in donation of blood or blood products in excess of 500 mL within a 56 day period.
• The subject has participated in a clinical trial and has received an investigational product within the following time period prior to the first dosing day in the current study: 30 days, 5 half-lives or twice the duration of the biological effect of the investigational product (whichever is longer).
• Exposure to more than four new chemical entities within 12 months prior to the first dosing day.
• Unable to refrain from the use of prescription or non-prescription drugs, including vitamins, herbal and dietary supplements (including St John's Wort) within 7 days (or 14 days if the drug is a potential enzyme inducer) or 5 half-lives (whichever is longer) prior to the first dose of study medication, unless in the opinion of the Investigator and GSK Medical Monitor the medication will not interfere with the study procedures or compromise subject safety.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 65 Years
• Eligible Sex: MALE
• Accepts Healthy Volunteers: Yes

Sponsors

GlaxoSmithKline

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

GSK Clinical Trials

Role: STUDY_DIRECTOR

GlaxoSmithKline

Locations

GSK Investigational Site

Baltimore, Maryland, United States

Countries

United States

References

Burns O, Zhu J, Manyak MJ, Ravindranath R, Koosha F, Haque N, Chung S. Relative Bioavailability of Fixed-Dose Combinations of Tamsulosin and Dutasteride: Results From 2 Randomized Trials in Healthy Male Volunteers. Clin Pharmacol Drug Dev. 2018 May;7(4):422-434. doi: 10.1002/cpdd.380. Epub 2017 Aug 11.

Reference Type: DERIVED

PMID: 28800206 (View on PubMed)

Study Documents

Document Type: Annotated Case Report Form

For additional information about this study please refer to the GSK Clinical Study Register

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Document Type: Dataset Specification

For additional information about this study please refer to the GSK Clinical Study Register

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Document Type: Clinical Study Report

For additional information about this study please refer to the GSK Clinical Study Register

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Document Type: Informed Consent Form

For additional information about this study please refer to the GSK Clinical Study Register

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Document Type: Study Protocol

For additional information about this study please refer to the GSK Clinical Study Register

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Document Type: Individual Participant Data Set

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Document Type: Statistical Analysis Plan

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Other Identifiers

117057

Identifier Type: -

Identifier Source: org_study_id