Can vitamin d tweak breast cancer genes? weight may matter
NCT ID NCT01472445
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looked at whether taking vitamin D could change certain genes in breast cancer tumors, and if a woman's weight affected those changes. Researchers gave 41 women with breast cancer either a low or high dose of vitamin D before surgery. The goal was to see if vitamin D could reverse negative effects linked to obesity, but the study was stopped early, so the findings are not conclusive.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
Vitamin D (cholecalciferol)
What this could lead to
If successful, this could point toward a way to use vitamin D to influence breast cancer growth, especially in women with different body weights.
What could go wrong
This was a small, early-phase study that was terminated early, so results are limited. Vitamin D is not a proven breast cancer treatment, and high doses may have side effects.
Disclaimer
Read more
Show less
This is a summary of
the original study
.
Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for BREAST CANCER are added.
By submitting, you agree to our Terms of use
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Show contact details
Enter your email to view the contact information for this study.
By submitting, you agree to our Terms of use
Locations
-
Stanford University Cancer Institute
Stanford, California, 94305, United States