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A Clinical Study to Evaluate the Pharmacokinetics and the Absolute Bioavailability of SRT2104 Given as a 250mg Oral Suspension and Intravenous Microdose of 100 µg Carbon-14 Radio-labeled SRT2104 in Healthy Male Subjects

This study has been completed.
Information provided by:
GlaxoSmithKline Identifier:
First received: July 9, 2009
Last updated: August 4, 2011
Last verified: August 2011

The primary objective of this study is to determine the absolute bioavailability of SRT2104 as a 250 mg suspension, and to define the intravenous pharmacokinetics of SRT2104.

The secondary objective of this study is to assess the potential systemic metabolite burden of SRT2104, and to provide plasma and urine samples for subsequent metabolite profiling and identification.

Condition Intervention Phase
Diabetes Mellitus, Type 2
Healthy Volunteer
Drug: 250 mg SRT2104 Suspension
Drug: Carbon-14 radio-labeled SRT2104
Phase 1

Study Type: Interventional
Study Design: Intervention Model: Crossover Assignment
Masking: Open Label
Primary Purpose: Basic Science
Official Title: Evaluation of the Pharmacokinetics and the Absolute Bioavailability of SRT2104 Given as a 250mg Oral Suspension and Intravenous Microdose of 100 µg Carbon-14 Radio-labeled SRT2104 in Healthy Male Subjects

Further study details as provided by GlaxoSmithKline:

Primary Outcome Measures:
  • Absolute bioavailability of SRT2104 250 mg suspension. [ Time Frame: Time points to measure the bioavailability of SRT2104 oral 250 mg suspension: 0, 1, 2, 3, 4, 5, 6, 8, 10, 12, 18, 24, 48, 72 hrs following administration. ]
  • Define the intravenous pharmacokinetics of SRT2104. [ Time Frame: Time points to define the IV PK of SRT2104: Just before infusion (0); During infusion (5, 10 min); Post infusion (5, 10, 20, 30, 45 min and 1, 2, 3, 4, 6, 8, 10, 12, 15, 21, 45, 69 hours). ]

Secondary Outcome Measures:
  • Potential systemic metabolite burden of SRT2104 following administration. [ Time Frame: At time points: Pre-dose; 0-12 hrs post dose; 12-24 hrs post dose). ]

Enrollment: 8
Study Start Date: November 2008
Study Completion Date: December 2008
Primary Completion Date: December 2008 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: SRT2104
Single arm with crossover from single dose of oral suspension formulation to single dose intravenous formulation.
Drug: 250 mg SRT2104 Suspension
Single 10 mL oral dose of 250 mg SRT2104 delivered as a suspension formulation.
Drug: Carbon-14 radio-labeled SRT2104
Single 10 mL IV dose containing 100 microgram (not more than 250 nCi, 9.25 kBq) Carbon-14 radio-labeled SRT2104, administered by IV infusion over 15 minutes, starting 2 hours and 45 minutes after the oral dose is administered.

Detailed Description:

This will be a single centre, combined IV and oral single dose, open-label study in healthy male volunteers.

Each subject will receive the following formulations on a single study day:

  1. Regimen A: A single 10 mL oral dose of 250 mg SRT2104 delivered as a suspension formulation;
  2. Regimen B: A single intravenous dose of 10 mL containing 100 µg (not more than 250 nCi, 9.25 kBq) Carbon-14 radio-labeled SRT2104 , administered by IV infusion over 15 minutes, starting 2 hours and 45 minutes after the oral dose.

Ages Eligible for Study:   18 Years to 65 Years   (Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Healthy males;
  • Aged 18-65 years;
  • Body Mass Index (BMI) of 18-35 kg/m2;
  • Willing and able to participate in the whole study and must provide written informed consent.

Exclusion Criteria:

  • Participation in a clinical research study involving investigational drugs or dosage forms within the previous 4 months;
  • Subjects who have previously been enrolled in this study;
  • Subjects who have ever sought advice from or been referred to a GP or counselor for abuse or misuse of alcohol, non medical drugs, medicinal drugs or other substance abuse e.g. solvents;
  • Subjects who admit to any current or previous use of Class A drugs such as opiates, cocaine, ecstasy, lysergic acid diethylamide (LSD) and intravenous amphetamines (Subjects who admit to occasional past use of cannabis will not be excluded as long as they have a negative drugs of abuse test and have been abstinent for at least 12 months;)
  • Positive drugs of abuse test result (Section 7.8);
  • Regular alcohol consumption in males >21 units per week (1 Unit = ½ pint beer, a 25 mL shot of 40% spirit or a 125 mL glass of wine);
  • Current smokers and those who have smoked within the last 12 months.
  • A breath carbon monoxide reading of greater than 10 ppm at screening;
  • Radiation exposure from clinical trials, including that from the present study and from diagnostic x rays but excluding background radiation, exceeding 5 mSv in the last twelve months or 10 mSv in the last five years. No occupationally exposed worker, as defined in the Ionising Radiation Regulations 1999, shall participate in the study;
  • Clinically significant abnormal biochemistry, haematology or urinalysis as judged by the PI (Section 7.8 )
  • History of adverse reaction or allergy to study drug or its excipients, e.g. lactose.
  • History of significant allergy. If subject suffers from hayfever they must not have or be expecting to have symptoms during the study period;
  • Donation of blood within the previous three months;
  • Subjects will be excluded from the study if they are considered by the PI to be at risk of transmitting, thorough blood or other body fluids, the agents responsible for acquired immunodeficiency syndrome (AIDS) or other sexually transmitted disease or hepatitis;
  • Positive HBV, HCV or HIV results;
  • Subjects receiving prohibited medication as described in Section 6.10;
  • Clinically significant medical history, examination finding or laboratory abnormality which in the opinion of the Investigator makes the subject unsuitable to include in the study;
  • Failure to satisfy the PI of fitness to participate for any other reason.
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Please refer to this study by its identifier: NCT00937872

United Kingdom
GSK Investigational Site
Nottingham, United Kingdom, NG11 6JS
Sponsors and Collaborators
Sirtris, a GSK Company
Study Director: GSK Clinical Trials GlaxoSmithKline
  More Information

Responsible Party: Cheri Hudson; Clinical Disclosure Advisor, GSK Clinical Disclosure Identifier: NCT00937872     History of Changes
Other Study ID Numbers: 113260
Study First Received: July 9, 2009
Last Updated: August 4, 2011

Additional relevant MeSH terms:
Diabetes Mellitus
Diabetes Mellitus, Type 2
Glucose Metabolism Disorders
Metabolic Diseases
Endocrine System Diseases processed this record on April 27, 2017