RCN-3028(Yung Shin Pharm Ind Kunshan Co. Ltd.)

Due to the fact that majority of breast cancers are estrogen-receptor and/or progesterone receptor positive, tamoxifen and aromatase inhibitors (AIs) are among the mainstay therapies to treat breast cancer. Prior clinical studies of tamoxifen suggested that up to 80 % of patients experienced hot flashes during therapy with tamoxifen, and 30 % defined their symptoms as severe. Despite the high efficacy of tamoxifen, the harmful side effects have been identified in previous studies as a significant reason for not persisting with the treatment in 16 - 30 % of breast cancer patients.
The primary purpose of this study is to determine if RCN3028 is effective and safe in the treatment of moderate to severe vasomotor symptoms associated. In accordance with the latest FDA guidance study participants will have a minimum of 7 moderate to sever hot flashes per day, or 50 per week at baseline.