A Breast Cancer Information Registry for Participants With Breast Cancer or Characteristics of Hereditary Breast Cancer This study is currently recruiting participants. Verified by National Cance

Autologous Vaccination With Lethally Irradiated, Autologous Breast Cancer Cells Engineered to Secrete GM-CSF in Women With Operable Breast Cancer This study is currently recruiting participants.

Letrozole in Preventing Cancer in Postmenopausal Women Who Have Received 4-6 Years of Hormone Therapy for Hormone Receptor-Positive, Lymph Node-Positive, Early-Stage Breast Cancer This study is cur