Vitamin d study in breast cancer halted early – what we learned

NCT ID NCT01472445

First seen May 03, 2026 · Last updated May 14, 2026 · Updated 3 times

Summary

This study looked at whether taking high doses of vitamin D could change certain genes in breast cancer tumors, and if a woman's weight affected those changes. Researchers planned to compare normal-weight and overweight women with breast cancer, giving some a standard dose and others a high dose of vitamin D. The study was stopped early, so results are limited.

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Contacts and locations

Locations

  • Stanford University Cancer Institute

    Stanford, California, 94305, United States

Conditions

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