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Study Evaluating Bazedoxifene Acetate In Osteoporosis In Postmenopausal Women

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT00205777
First Posted: September 20, 2005
Last Update Posted: April 10, 2013
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.
Information provided by (Responsible Party):
Pfizer
  Purpose
The purpose of this study is to determine whether bazedoxifene acetate is safe and effective in the treatment of osteoporosis in postmenopausal women.

Condition Intervention Phase
Osteoporosis Drug: Bazedoxifene Acetate Other: Placebo Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Official Title: Fracture Incidence Reduction And Safety Of TSE-424 (Bazedoxifene Acetate) Compared To Placebo And Raloxifene In Osteoporotic Postmenopausal Women

Resource links provided by NLM:


Further study details as provided by Pfizer:

Primary Outcome Measures:
  • Percentage of Participants With New Vertebral Fractures Through Month 36 [ Time Frame: Baseline through Month 36 ]
    New vertebral fracture: decrease in anterior, mid, or posterior vertebral (vt) height of approximately 20% and 4 millimeter (mm) or more from baseline (base) to end of study confirmed by measurement of involved vt body, a semi-quantitative grade change of 1 from base for any vertebra from fourth thoracic to fourth lumbar vertebra (T4 to L4), provided vertebra was not fractured at base. Participant was counted only once irrespective of how many new vt fractures were diagnosed. Stratification factor was base fracture status, categorized as no prevalent fracture and at least 1 prevalent fracture.

  • Percentage of Participants With New Vertebral Fractures Through Month 60 [ Time Frame: Baseline through Month 60 ]
    New vertebral fracture: decrease in anterior, mid, or posterior vt height of approximately 20% and 4 millimeter (mm) or more from baseline (base) to end of study confirmed by measurement of involved vt body, a semi-quantitative grade change of 1 from base for any vertebra from fourth thoracic to fourth lumbar vertebra (T4 to L4), provided vertebra was not fractured at base. Participant was counted only once irrespective of how many new vt fractures were diagnosed. Stratification factor was base fracture status, categorized as no prevalent fracture and at least 1 prevalent fracture.

  • Percentage of Participants With New Vertebral Fractures Through Month 84 [ Time Frame: Baseline through Month 84 ]
    New vertebral fracture: decrease in anterior, mid, or posterior vt height of approximately 20% and 4 millimeter (mm) or more from baseline (base) to end of study confirmed by measurement of involved vt body, a semi-quantitative grade change of 1 from base for any vertebra from fourth thoracic to fourth lumbar vertebra (T4 to L4), provided vertebra was not fractured at base. Participant was counted only once irrespective of how many new vt fractures were diagnosed. Stratification factor was base fracture status, categorized as no prevalent fracture and at least 1 prevalent fracture.


Secondary Outcome Measures:
  • Incidence of Breast Cancer Through Month 36 [ Time Frame: Baseline through Month 36 ]
    Incidence of breast cancer was defined as the number of participants with breast cancer diagnosis by the time point of interest divided by the number of participants included in the analysis. The reported rate was rescaled to reflect average follow-up time per 1000 women (1000 multiplied by number of cases divided by total follow-up time).

  • Incidence of Breast Cancer Through Month 60 [ Time Frame: Baseline through Month 60 ]
    Incidence of breast cancer was defined as the number of participants with breast cancer diagnosis by the time point of interest divided by the number of participants included in the analysis. The reported rate was rescaled to reflect average follow-up time per 1000 women (1000 multiplied by number of cases divided by total follow-up time).

  • Incidence of Breast Cancer Through Month 84 [ Time Frame: Baseline through Month 84 ]
    Incidence of breast cancer was defined as the number of participants with breast cancer diagnosis by the time point of interest divided by the number of participants included in the analysis. The reported rate was rescaled to reflect average follow-up time per 1000 women (1000 multiplied by number of cases divided by total follow-up time).

  • Percentage of Participants With New Clinical Vertebral Fractures Through Month 36 [ Time Frame: Baseline through Month 36 ]
    A new clinical vertebral fracture was defined as a new fracture found at any time because of back pain suggestive of fracture(s). New Clinical vertebral fractures were verified with radiographic assessment using both semi-quantitative and quantitative morphometric assessment: decrease in anterior, mid, or posterior vt height of approximately 20% and 4 mm or more from base to end of study confirmed by measurement of involved vt body, a semi-quantitative grade change of 1 from base for any vertebra from T4 to L4, provided vertebra was not fractured at base.

  • Percentage of Participants With New Clinical Vertebral Fractures Through Month 60 [ Time Frame: Baseline through Month 60 ]
    A new clinical vertebral fracture was defined as a new fracture found at any time because of back pain suggestive of fracture(s). New Clinical vertebral fractures were verified with radiographic assessment using both semi-quantitative and quantitative morphometric assessment: decrease in anterior, mid, or posterior vt height of approximately 20% and 4 mm or more from base to end of study confirmed by measurement of involved vt body, a semi-quantitative grade change of 1 from base for any vertebra from T4 to L4, provided vertebra was not fractured at base.

  • Percentage of Participants With New Clinical Vertebral Fractures Through Month 84 [ Time Frame: Baseline through Month 84 ]
    A new clinical vertebral fracture was defined as a new fracture found at any time because of back pain suggestive of fracture(s). New Clinical vertebral fractures were verified with radiographic assessment using both semi-quantitative and quantitative morphometric assessment: decrease in anterior, mid, or posterior vt height of approximately 20% and 4 mm or more from base to end of study confirmed by measurement of involved vt body, a semi-quantitative grade change of 1 from base for any vertebra from T4 to L4, provided vertebra was not fractured at base.

  • Number of Participants With Worsening Vertebral Fractures Through Month 36 [ Time Frame: Baseline through Month 36 ]
    A worsening vertebral fracture was defined as a decrease in anterior, mid, or posterior vertebral height of at least 20% and at least 4 mm as evaluated by quantitative morphometric assessment, and a grade change of at least 1 as rated by a radiologist using the semi-quantitative rating scale. It can occur only in a vertebra that was fractured at baseline.

  • Number of Participants With Worsening Vertebral Fractures Through Month 60 [ Time Frame: Baseline through Month 60 ]
    A worsening vertebral fracture was defined as a decrease in anterior, mid, or posterior vertebral height of at least 20% and at least 4 mm as evaluated by quantitative morphometric assessment, and a grade change of at least 1 as rated by a radiologist using the semi-quantitative rating scale. It can occur only in a vertebra that was fractured at baseline.

  • Number of Participants With Worsening Vertebral Fractures Through Month 84 [ Time Frame: Baseline through Month 84 ]
    A worsening vertebral fracture was defined as a decrease in anterior, mid, or posterior vertebral height of at least 20% and at least 4 mm as evaluated by quantitative morphometric assessment, and a grade change of at least 1 as rated by a radiologist using the semi-quantitative rating scale. It can occur only in a vertebra that was fractured at baseline.

  • Percentage of Participants With Non-vertebral Fractures Through Month 36 [ Time Frame: Baseline through Month 36 ]
    Non-vertebral fractures were determined by direct questioning at each clinic visit after medication therapy begins. Osteoporosis-related, hip and wrist fractures were summarized.

  • Percentage of Participants With Non-vertebral Fractures Through Month 60 [ Time Frame: Baseline through Month 60 ]
    Non-vertebral fractures were determined by direct questioning at each clinic visit after medication therapy begins. Osteoporosis-related, hip and wrist fractures were summarized.

  • Percentage of Participants With Non-vertebral Fractures Through Month 84 [ Time Frame: Baseline through Month 84 ]
    Non-vertebral fractures were determined by direct questioning at each clinic visit after medication therapy begins. Osteoporosis-related, hip and wrist fractures were summarized.

  • Change From Baseline in Height at Month 36 [ Time Frame: Baseline, Month 36 ]
    Height was measured 3 times using standardized Harpenden stadiometer (height based on the middle stadiometer reading was recorded).

  • Change From Baseline in Height at Month 60 [ Time Frame: Baseline, Month 60 ]
    Height was measured 3 times using standardized Harpenden stadiometer (height based on the middle stadiometer reading was recorded).

  • Change From Baseline in Height at Month 84 [ Time Frame: Baseline, Month 84 ]
    Height (cm) was measured 3 times using standardized Harpenden stadiometer (height based on the middle stadiometer reading was recorded).

  • Percent Change From Baseline in Bone Mineral Density (BMD) at Month 6, 12, 18, 24 and 36 [ Time Frame: Baseline, Months 6, 12, 18, 24, 36 ]
    BMD of lumbar spine (Lu Sp) and hip (total hip [Tl Hp], femoral neck [Fe Ne] and femur trochanter [Fe Tr]) was evaluated by dual-energy x-ray absorptiometry (DXA). The left hip was evaluated unless prevented by pathology, in which case the right hip was evaluated throughout the study. Results were scored as T score, defined as BMD at the site when compared to the young normal reference mean. Normal BMD is a T-score of -1.0 or higher.

  • Percent Change From Baseline in Bone Mineral Density (BMD) at Months 48, 60 [ Time Frame: Baseline, Month 48, 60 ]
    BMD of lumbar spine (Lu Sp) and hip (total hip [Tl Hp], femoral neck [Fe Ne] and femur trochanter [Fe Tr]) was evaluated by dual-energy x-ray absorptiometry (DXA). The left hip was evaluated unless prevented by pathology, in which case the right hip was evaluated throughout the study. Results were scored as T score, defined as BMD at the site when compared to the young normal reference mean. Normal BMD is a T-score of -1.0 or higher.

  • Percent Change From Baseline in Bone Mineral Density (BMD) at Months 72 and 84 [ Time Frame: Baseline, Month 72, 84 ]
    BMD of lumbar spine (Lu Sp) and hip (total hip [Tl Hp], femoral neck [Fe Ne] and femur trochanter [Fe Tr]) was evaluated by dual-energy x-ray absorptiometry (DXA). The left hip was evaluated unless prevented by pathology, in which case the right hip was evaluated throughout the study. Results were scored as T score, defined as BMD at the site when compared to the young normal reference mean. Normal BMD is a T-score of -1.0 or higher.

  • Percent Change From Baseline in Osteocalcin at Month 3, 6 and 12 [ Time Frame: Baseline, Months 3, 6, 12 ]
    Osteocalcin is a biochemical marker of bone formation. Blood samples were collected to evaluate osteocalcin levels.

  • Percent Change From Baseline in Osteocalcin at Months 36 and 60 [ Time Frame: Baseline, Months 36, 60 ]
    Osteocalcin is a biochemical marker of bone formation. Blood samples were collected to evaluate osteocalcin levels.

  • Percent Change From Baseline in Osteocalcin at Months 72 and 84 [ Time Frame: Baseline, Months 72, 84 ]
    Osteocalcin is a biochemical marker of bone formation. Blood samples were collected to evaluate osteocalcin levels.

  • Percent Change From Baseline in C-telopeptide (CTx) at Month 3, 6 and 12 [ Time Frame: Baseline, Months 3, 6, 12 ]
    C-telopeptide is a biochemical marker of bone formation. Blood samples were collected to evaluate C-telopeptide levels.

  • Percent Change From Baseline in C-telopeptide (CTx) at Months 36 and 60 [ Time Frame: Baseline, Months 36, 60 ]
    C-telopeptide is a biochemical marker of bone formation. Blood samples were collected to evaluate C-telopeptide levels.

  • Percent Change From Baseline in C-telopeptide (CTx) at Months 72 and 84 [ Time Frame: Baseline, Months 72, 84 ]
    C-telopeptide is a biochemical marker of bone formation. Blood samples were collected to evaluate C-telopeptide levels.

  • Percent Change From Baseline in Lipid Parameters at Months 6, 12, 24 and 36 [ Time Frame: Baseline, Months 6, 12, 24, 36 ]
    Lipid parameters evaluated included total cholesterol (TC), low density lipoprotein (LDL), high density lipoprotein (HDL), triglyceride (TG), high-density lipoprotein fraction 2 (HDL2) and high-density lipoprotein fraction 3 (HDL3).

  • Bone Histomorphometric Indices at Month 36: BV, OV, OS, OcS, ObS, MS, ES, OMS, CP [ Time Frame: Month 36 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD. Percentage of following indices (volume,surface,porosity) was calculated:Bone Volume(BV), Osteoid Volume(OV), Osteoid Surface(OS), Osteoclast Surface(OcS), Osteoblast Surface(ObS), Mineralizing surface(MS), Eroded Surface(ES), Osteoid Mineralizing surface(OMS), Cortical porosity(CP).

  • Bone Histomorphometric Indices at Month 60: BV, OV, OS, OcS, ObS, MS, ES, OMS, CP [ Time Frame: Month 60 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD. Percentage of following indices (volume,surface,porosity) was calculated:Bone Volume(BV), Osteoid Volume(OV), Osteoid Surface(OS), Osteoclast Surface(OcS), Osteoblast Surface(ObS), Mineralizing surface(MS), Eroded Surface(ES), Osteoid Mineralizing surface(OMS), Cortical porosity(CP).

  • Bone Histomorphometric Indices at Month 36: WTh, OTh, TbTh, TbSp and CTh [ Time Frame: Month 36 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD. Calculated indices included: Wall Thickness (WTh), Osteoid Thickness (OTh), Trabecular Thickness (TbTh), Trabecular Separation (TbSp) and Cortical thickness (CTh). Trabecular separation defined as the thickness of the spaces as defined by binarization within the volume of interest.

  • Bone Histomorphometric Indices at Month 60: WTh, OTh, TbTh, TbSp and CTh [ Time Frame: Month 60 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD. Calculated indices included: WTh, OTh, TbTh, TbSp and CTh. Trabecular separation defined as the thickness of the spaces as defined by binarization within the volume of interest.

  • Bone Histomorphometric Indices at Month 36: Total Surface (Goldner Slide) [TSG] [ Time Frame: Month 36 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD. Calculated indices included: Total Surface (Goldner Slide) [TSG]. All specimens were demineralized and subjected to staining procedures (Goldner`s staining). Slides were analyzed using light microscopy for total surface area, the surface area that consisted of bone and the surface area that consisted of graft material (all in mm^2 and expressed as percent (%) of the total surface.

  • Bone Histomorphometric Indices at Month 60: TSG [ Time Frame: Month 60 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD. Calculated indices included: Total Surface (Goldner Slide) [TSG]. All specimens were demineralized and subjected to staining procedures (Goldner`s staining). Slides were analyzed using light microscopy for total surface area, the surface area that consisted of bone and the surface area that consisted of graft material (all in mm^2 and expressed as percent (%) of the total surface.

  • Bone Histomorphometric Indices at Month 36: TtAr [ Time Frame: Month 36 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD. Calculated variable: Tissue Area (TtAr). Tissue area comprised of the porous calcified substance from which bones were made.

  • Bone Histomorphometric Indices at Month 60: TtAr [ Time Frame: Month 60 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD. Calculated variable: Tissue Area (TtAr). Tissue area comprised of the porous calcified substance from which bones were made.

  • Bone Histomorphometric Indices at Month 36: BFP, RP and RmP [ Time Frame: Month 36 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD. Calculated indices included: Bone Formation Period (BFP), Resorption Period (RP), Remodeling Period (RmP).

  • Bone Histomorphometric Indices at Month 60: BFP, RP and RmP [ Time Frame: Month 60 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD. Calculated indices included: Bone Formation Period (BFP), Resorption Period (RP), Remodeling Period (RmP).

  • Bone Histomorphometric Indices at Month 36: SuD [ Time Frame: Month 36 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD Calculated indices included: Surface Density (SuD).

  • Bone Histomorphometric Indices at Month 60: SuD [ Time Frame: Month 60 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD Calculated indices included: Surface Density (SuD).

  • Bone Histomorphometric Indices at Month 36: BFRTS [ Time Frame: Month 36 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD Calculated indices included: Bone Form Rate (BFR)-Total Surface Reference (BFRTS). BFR accounts the bone surface which is actively mineralizing, which depends on the number of osteoblasts that are active. BFR= Fraction of mineralizing surface and bone surface multiplied by mineralization apposition rate (MAR).

  • Bone Histomorphometric Indices at Month 60: BFRTS [ Time Frame: Month 60 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD Calculated indices included: Bone Form Rate (BFR)-Total Surface Reference (BFRTS). BFR accounts the bone surface which is actively mineralizing, which depends on the number of osteoblasts that are active. BFR= Fraction of mineralizing surface and bone surface multiplied by mineralization apposition rate (MAR).

  • Bone Histomorphometric Indices at Month 36: ACF [ Time Frame: Month 36 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD Calculated indices included: Activation Frequency (ACF). The total period (TP) is the duration between the beginning of one formation period (FP) and the beginning of the next FP. The number of times per year that this spot begins the FP is the activation frequency (ACF).

  • Bone Histomorphometric Indices at Month 60: ACF [ Time Frame: Month 60 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD Calculated indices included: Activation Frequency (ACF). The total period (TP) is the duration between the beginning of one formation period (FP) and the beginning of the next FP. The number of times per year that this spot begins the FP is the activation frequency (ACF).

  • Bone Histomorphometric Indices at Month 36: Mlt [ Time Frame: Month 36 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD Calculated indices included: Mineralization Lag Time (Mlt). Mineralization lag time was the lag between the time osteoid was formed and the mineral was added.

  • Bone Histomorphometric Indices at Month 60: Mlt [ Time Frame: Month 60 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD Calculated indices included: Mineralization Lag Time (Mlt). Mineralization lag time was the lag between the time osteoid was formed and the mineral was added.

  • Bone Histomorphometric Indices at Month 36: MAR [ Time Frame: Month 36 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD Calculated indices included: Mineral Apposition Rate (MAR). MAR is the area of new bone formed during the label interval.

  • Bone Histomorphometric Indices at Month 60: MAR [ Time Frame: Month 60 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD Calculated indices included: Mineral Apposition Rate (MAR). MAR is the area of new bone formed during the label interval.

  • Bone Histomorphometric Indices at Month 36: TbN [ Time Frame: Month 36 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD Calculated indices included: Trabecular Number (TbN). TbN= Ratio of bone volume to tissue volume divided by trabecular thickness.

  • Bone Histomorphometric Indices at Month 60: TbN [ Time Frame: Month 60 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD Calculated indices included: Trabecular Number (TbN). TbN= Ratio of bone volume to tissue volume divided by trabecular thickness.

  • Bone Histomorphometric Indices at Month 36: BFRBV [ Time Frame: Month 36 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD Calculated indices included: Bone Formation Rate (BFR)-Bone Volume Reference (BFRBV). BFR accounts the bone volume which is actively mineralizing, which depends on the number of osteoblasts that are active. BFR= Fraction of mineralizing volume and bone volume multiplied by mineralization apposition rate (MAR).

  • Bone Histomorphometric Indices at Month 60: BFRBV [ Time Frame: Month 60 ]
    Bone histomorphometry verified rate of bone remodeling. Anterior iliac crest bone biopsy done to exclude presence of osteomalacia or more subtle defects in mineralization; investigated qualitative aspects of bone. Also assessed decrease in rate of bone turnover, investigated mechanism for observed increase in BMD Calculated indices included: Bone Formation Rate (BFR)-Bone Volume Reference (BFRBV). BFR accounts the bone volume which is actively mineralizing, which depends on the number of osteoblasts that are active. BFR= Fraction of mineralizing volume and bone volume multiplied by mineralization apposition rate (MAR).

  • Women's Health Questionnaire (WHQ) [ Time Frame: Baseline ]
    WHQ is a measure of mid-aged women's emotional and physical health. Consists of 36-item assessing nine domains of physical and emotional health: Depressed mood; Somatic symptoms; Anxiety/fears; Vasomotor symptoms; Sleep problems; Sexual behavior; Menstrual symptoms; Memory/concentration; and Attractiveness. Each item scored on a 4 point scale (yes definitely, yes sometimes, not much, no not at all) reduced to binary option as 0 (no) and 1 (yes). Domain subscale score was calculated as sum of domain items score divided by number of domain items. Total score was calculated as the sum of individual domain subscale score divided by number of domains. Total score range from 0 (absent) to 1 (present), with higher scores indicating more pronounced distress and dysfunction. Baseline values at different time points were considered only for the participants who were evaluable at those time points.

  • Change From Baseline in Women's Health Questionnaire (WHQ) at Month 12, 24 and 36 [ Time Frame: Baseline, Months 12, 24, 36 ]
    WHQ is a measure of mid-aged women's emotional and physical health. Consists of 36-item assessing nine domains of physical and emotional health: Depressed mood; Somatic symptoms; Anxiety/fears; Vasomotor symptoms; Sleep problems; Sexual behavior; Menstrual symptoms; Memory/concentration; and Attractiveness. Each item scored on a 4 point scale (yes definitely, yes sometimes, not much, no not at all) reduced to binary option as 0 (no) and 1 (yes). Domain subscale score was calculated as sum of domain items score divided by number of domain items. Total score was calculated as the sum of individual domain subscale score divided by number of domains. Total score range from 0 (absent) to 1 (present), with higher scores indicating more pronounced distress and dysfunction.Baseline values at different time points were considered only for the participants who were evaluable at those time points.

  • European Foundation for Osteoporosis Quality of Life Questionnaire (QUALEFFO) [ Time Frame: Baseline ]
    QUALEFFO is an osteoporosis-specific health instrument developed specifically for participants with vertebral deformities used to evaluate the effect of back pain and treatment on quality of life. The QUALEFFO questionnaire includes 41 items in 5 domains: pain, physical function, social function, general health perception, and mental function. The total score is calculated according to the scoring algorithm developed by the International Osteoporosis Foundation. Total scores are reported from 0 to 100, with lower scores corresponding to better quality of life. Baseline values at different time points were considered only for the participants who were evaluable at those time points.

  • Change From Baseline in European Foundation for Osteoporosis Quality of Life Questionnaire (QUALEFFO) at Month 12, 24 and 36 [ Time Frame: Baseline, Months 12, 24, 36 ]
    QUALEFFO is an osteoporosis-specific health instrument developed specifically for participants with vertebral deformities used to evaluate the effect of back pain and treatment on quality of life. The QUALEFFO questionnaire includes 41 items in 5 domains: pain, physical function, social function, general health perception, and mental function. The total score is calculated according to the scoring algorithm developed by the International Osteoporosis Foundation. Total scores are reported from 0 to 100, with lower scores corresponding to better quality of life. Baseline values at different time points were considered only for the participants who were evaluable at those time points.

  • Euro Quality of Life-5 Dimensions (EQ-5D) Visual Analog Scale (VAS) [ Time Frame: Baseline ]
    EQ-5D: participant rated questionnaire to assess health-related quality of life in terms of a single index value. The VAS component rates current health state on a scale from 0 mm (worst imaginable health state) to 100 mm (best imaginable health state); higher scores indicate a better health state. Baseline values at different time points were considered only for the participants who were evaluable at those time points.

  • Change From Baseline in Euro Quality of Life-5 Dimensions (EQ-5D) Visual Analog Scale (VAS) at Month 12, 24 and 36 [ Time Frame: Baseline, Months 12, 24, 36 ]
    EQ-5D: participant rated questionnaire to assess health-related quality of life in terms of a single index value. The VAS component rates current health state on a scale from 0 mm (worst imaginable health state) to 100 mm (best imaginable health state); higher scores indicate a better health state. Baseline values at different time points were considered only for the participants who were evaluable at those time points.

  • Euro Quality of Life-5 Dimensions (EQ-5D)- Health State Profile Utility Score [ Time Frame: Baseline ]
    EQ-5D: participant rated questionnaire to assess health-related quality of life in terms of a single utility score. Health State Profile component assesses level of current health for 5 domains: mobility, self-care, usual activities, pain and discomfort, and anxiety and depression; 1 indicates better health state (no problems); 3 indicates worst health state ("confined to bed"). Scoring formula developed by EuroQol Group assigns a utility value for each domain in the profile. Score is transformed and results in a total score range -0.594 to 1.000; higher score indicates a better health state. Baseline values at different time points were considered only for the participants who were evaluable at those time points.

  • Change From Baseline in Euro Quality of Life-5 Dimensions (EQ-5D)- Health State Profile Utility Score at Month 12, 24 and 36 [ Time Frame: Baseline, Months 12, 24, 36 ]
    EQ-5D: participant rated questionnaire to assess health-related quality of life in terms of a single utility score. Health State Profile component assesses level of current health for 5 domains: mobility, self-care, usual activities, pain and discomfort, and anxiety and depression; 1 indicates better health state (no problems); 3 indicates worst health state ("confined to bed"). Scoring formula developed by EuroQol Group assigns a utility value for each domain in the profile. Score is transformed and results in a total score range -0.594 to 1.000; higher score indicates a better health state. Baseline values at different time points were considered only for the participants who were evaluable at those time points.


Enrollment: 7609
Study Start Date: December 2001
Study Completion Date: September 2010
Primary Completion Date: September 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: A Drug: Bazedoxifene Acetate
BZA 20mg, daily, oral
Placebo Comparator: B Other: Placebo
Placebo, daily, oral

  Eligibility

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Ages Eligible for Study:   55 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Must be at least 2 years postmenopausal
  • Osteoporotic subjects without vertebral fracture who meet BMD criteria, or Osteoporotic subjects with vertebral fracture

Exclusion Criteria:

  • Diseases that may affect bone metabolism
  • Vasomotor symptoms requiring treatment
  • Known history or suspected cancer of the breast
  • Active or past history of venous thromboembolic events
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00205777


  Show 376 Study Locations
Sponsors and Collaborators
Pfizer
Investigators
Study Director: Pfizer CT.gov Call Center Pfizer
  More Information

Additional Information:
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: Pfizer
ClinicalTrials.gov Identifier: NCT00205777     History of Changes
Other Study ID Numbers: 3068A1-301
B1781001
First Submitted: September 16, 2005
First Posted: September 20, 2005
Results First Submitted: December 31, 2012
Results First Posted: April 10, 2013
Last Update Posted: April 10, 2013
Last Verified: February 2013

Keywords provided by Pfizer:
Osteoporosis
Postmenopause

Additional relevant MeSH terms:
Osteoporosis
Bone Diseases, Metabolic
Bone Diseases
Musculoskeletal Diseases
Metabolic Diseases
Bazedoxifene
Selective Estrogen Receptor Modulators
Estrogen Receptor Modulators
Hormone Antagonists
Hormones, Hormone Substitutes, and Hormone Antagonists
Physiological Effects of Drugs
Bone Density Conservation Agents