Family walkingIt is estimated that 5-10% of all breast cancer cases are hereditary. Abnormal genes (or gene mutations) that greatly increase breast and ovarian cancer risk are passed on from parent to child within some families. Researchers have discovered several genes linked to breast and ovarian cancer, the most common of which are BRCA1 and BRCA2.

In 2009, Willow expanded its services to include anyone at risk for, or affected by, hereditary breast and ovarian cancer and created the In Our Genes Program. In 2014, we integrated all of our services to be available for all those affected, and expanded the name of our organization to Willow Breast & Hereditary Cancer Support.

When you call Willow, you can speak to a member of our Support Team who has a BRCA mutation and who understands the impact of a diagnosis. We can offer you information, emotional support and encouragement. Call us, toll-free, at 1.888.778.3100 or email us at


hboc basics


assessing risk


genetic counselling


genetic testing


sharing test results


risk management