Scimex: Is Vitamin D Level in Blood at Breast Cancer Diagnosis Associated with Survival? A new report published online by JAMA Oncology examined whether levels of a blood biomarker of Vitamin D – 25-hydroxyvitamin D (250HD) – at the time of breast cancer diagnosis were associated with survival. Song Yao, Ph.D., of the Roswell Park Cancer Institute, Buffalo, New York, and coauthors analyzed data from a large group of breast cancer survivors. They focused on prognosis and outcomes in 1,666 women participating in the Pathways Study, a group of women with breast cancer established at Kaiser Permanente Northern California.
In the study, higher 250HD blood levels were associated with better
overall survival. In premenopausal women, the association of higher
blood levels of 250HD and overall survival was stronger and there were
associations with other specific measures of survival.
The study reports lower 250HD blood concentrations in women with
advanced-stage tumors and the lowest 250HD concentrations in
premenopausal women with triple-negative cancer.
The authors note their findings were consistent with other literature
suggesting better overall survival among patients with higher 250HD
levels. They advised caution in interpreting their findings because of
other potential mitigating factors. The study’s design also cannot
“Our findings provide compelling observational evidence for inverse
associations between vitamin D levels and risk of breast cancer
progression and death,” the study concludes.
(JAMA Oncol. Published online November 10, 2016. doi:10.1001/jamaoncol.2016.4188; available pre-embargo at the For The Media website.)
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