Women with a BRCA1 mutation face a lifetime risk of breast cancer of approximately 70% and a lifetime risk of ovarian cancer of approximately 40%. A number of potential anti-cancer nutrients have been proposed, however, it is important that diet supplements be evaluated prior to general recommendation. The risk of breast and ovarian cancer in carriers of a BRCA1 mutation might be lowered by some nutritional supplements. For example, green tea, broccoli and vitamin D are of potential interest. One dietary supplement that is thought to have potential for BRCA1 carriers is diindolylmethane (DIM), which is an active ingredient in broccoli and other green vegetables. DIM - is found in vegetables like broccoli and is available as a supplement in health food stores. The investigators think that DIM may increase the production of the normal copy of BRCA1 and offset the effect of the mutation. The purpose of this study is to determine that there is a potential for oral DIM supplementation to result in the increased production of the BRCA1 protein in BRCA1 mutation carriers. The results of the study will also serve as an evaluation of the current use and success of preventive strategies for BRCA1 mutation carriers.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
300
300 mg per day of DIM for six weeks.
Familial Breast Cancer Research Unit, Women's College Research Institute
Toronto, Ontario, Canada
RECRUITINGOral DIM supplementation increases BRCA1 mRNA expression and hence BRCA1 protein in women with a BRCA1 mutation
Time frame: 6 months
Oral DIM supplementation causes favorable estrogen metabolism in women with a BRCA1 mutation
Time frame: 6 months
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