A Study to Estimate the Effect of Formulation on the Relative Absorption of SB-751689 Administered to Healthy Women

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00540878
Recruitment Status : Completed
First Posted : October 8, 2007
Last Update Posted : May 18, 2009
Information provided by:

October 4, 2007
October 8, 2007
May 18, 2009
April 2007
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AUC and CMAX after a single dose. [ Time Frame: after a single dose ]
Same as current
Complete list of historical versions of study NCT00540878 on Archive Site
Safety and tolerability after single dose. [ Time Frame: after a single dose ]
Same as current
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A Study to Estimate the Effect of Formulation on the Relative Absorption of SB-751689 Administered to Healthy Women
An Open-Label, Randomized, Five Period Crossover Study to Estimate the Relative Bioavailability of Five Formulations of 400mg SB-751689 (a Calcium-Sensing Receptor Antagonist) Administered as a Single Oral Dose to Healthy Postmenopausal Females
This study will examine the effects of formulation on the relative bioavailability of SB-751689 (400 mg) administered to healthy postmenopausal women. Subjects will receive a single oral dose of each formulation, with five formulations of SB-751689 tested in total. Blood samples will be taken up to 24 hours postdose after each dose administration. This study will provide information for future possible formulation development of SB-751689 for Phase III.
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Phase 1
Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Drug: SB-751689 oral tablets (400 mg)
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*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Same as current
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Inclusion criteria:

  • Healthy postmenopausal women; 40 and 65 years of age, inclusive
  • Non-smokers (as defined in exclusion criteria 6 below)
  • Body weight > or = 50 kg and BMI within the range 19-32 kg/m2
  • Capable of giving written informed consent and complying with the requirements and restrictions listed in the consent form

Exclusion criteria:

  • Any clinically relevant biological or physical abnormality found or reported at screening which, in the opinion of the investigator, is clinically significant and would preclude safe participation in this study
  • A QTc interval of > 450 msec at screening
  • Positive urine drug screen at screening
  • Positive urine test for alcohol at pre-dose
  • Positive for HIV or hepatitis B or C virus at screening
  • Urinary cotinine levels indicative of smoking at screening
  • History of smoking or use of nicotine containing products within one year of the study or >10 pack-year history of smoking overall
  • History of regular alcohol consumption exceeding 7 units/week (1 unit = 5 ounces of wine or 12 ounces of beer or 1.5 ounces of hard liquor) within 6 months of screening
  • History of drug abuse within 6 months of the study
  • Participation in a clinical study and received a drug or a new chemical entity with 30 days or 5 half-lives, or twice the duration of the biological effect of any drug (whichever is longer) prior to the first dose of the current study medication.
  • Exposure to more than four new chemical entities within 12 months prior to the first dosing day.
  • Use of prescription or non-prescription drugs
  • Consumption of red wine, grapefruit, grapefruit juice or grapefruit containing products within 14 days prior to the first dose of study medication
  • Donation of blood in excess of 500 mL within 56 days prior to dosing
  • Evidence of renal, hepatic or biliary impairment
  • History of serious gastrointestinal disease
  • 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 physician responsible, contraindicates their participation.
  • History of clinically significant cardiovascular disease
  • Medical conditions that might alter bone metabolism
  • Serum parathyroid hormone (iPTH) test levels outside the reference range at screening
  • Liver function tests, parathyroid hormone test or CPK outside the reference range at screening
Sexes Eligible for Study: Female
40 Years to 65 Years   (Adult, Older Adult)
Contact information is only displayed when the study is recruiting subjects
United States
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Study Director, GSK
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Study Director: GSK Clinical Trials, M.D. GlaxoSmithKline
May 2009

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP