Vitamin D and Breast Cancer: Does Weight Make a Difference?
Trial ID or NCT#
Status
Purpose
This is a research study of the effect of Vitamin D on breast cancer. We hope to learn whether Vitamin D can change characteristics of certain genes in a breast cancer tumor that affect its growth. We believe some of these characteristics may be influenced by body weight.
Official Title
Vitamin D and Breast Cancer: Does Weight Make a Difference?
Eligibility Criteria
- - Women who have undergone a core needle biopsy demonstrating an operable breast cancer whom have not yet had any further therapy. - No prior therapy for breast cancer. - Age 18 years or older. - Any menopausal status - Planned surgical resection of breast cancer or repeat core biopsy tissue sampling prior to initiation of neoadjuvant systemic chemotherapy. - Availability of tissue blocks from initial core needle biopsy. - Signed informed consent. - Willing to discontinue use of all supplements containing Vitamin D for the duration of the study, and take only the Vitamin D provided by the study.
- - Presence of any Metastatic lesion. - History of parathyroid disease, hypercalcemia, or kidney stones. - History of Selective estrogen receptor modulator (SERM) or aromatase inhibitor therapy. - Receiving metformin. - History of renal failure requiring dialysis or kidney transplantation. - Women who are known to be pregnant or who are nursing. (As vitamin D does not have toxicity to the fetus, a negative pregnancy test is not a requirement to participate in the study.) - Patients planned for surgical therapy of their breast cancer or initiation of systemic chemotherapy, that would not allow for at least 7 days of vitamin D intervention - Any condition potentially interfering with subjects ability to comply with taking study medication. - Any medical condition that would potentially interfere with vitamin D absorption. - Current participation in another research study that would increase risk to subject, in the opinion of the investigators. - Patients currently taking more than 2000 IU of Vitamin D.
Investigator(s)
Contact us to find out if this trial is right for you.
Contact
ccto-office@stanford.edu
650-498-7061
View on ClinicalTrials.gov