Vitamin D Deficiency, Muscle Pain, Joint Pain, and Joint Stiffness in Postmenopausal Women Receiving Letrozole For Stage I-III Breast Cancer
Public ClinicalTrials.gov record NCT00416715. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Pilot Study of Vitamin D Deficiency and Myalgias, Arthralgias and/or Joint Stiffness Associated With Letrozole (Femara® )
Study identification
- NCT ID
- NCT00416715
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Lead sponsor
- University of Washington
- Other
- Enrollment
- 100 participants
Conditions and interventions
Conditions
Interventions
- assessment of therapy complications Procedure
- calcium carbonate Dietary Supplement
- calcium citrate Dietary Supplement
- calcium glucarate Dietary Supplement
- calcium gluconate Drug
- cholecalciferol Dietary Supplement
- laboratory biomarker analysis Other
- letrozole Drug
- musculoskeletal complications management/prevention Procedure
Procedure · Dietary Supplement · Drug + 1 more
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- Female
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Sep 30, 2006
- Primary completion
- Apr 30, 2010
- Completion
- Apr 30, 2010
- Last update posted
- Jul 10, 2017
2006 – 2010
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Fred Hutchinson Cancer Research Center/University of Washington Cancer Consortium | Seattle | Washington | 98109 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00416715, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jul 10, 2017 · Synced Apr 29, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00416715 live on ClinicalTrials.gov.