This clinical trial is focused on studying treatments for early breast cancer, specifically targeting tumors that are estrogen receptor positive with either high or slow growth rates and may have spread to nearby lymph nodes. The study aims to evaluate the effects of a new treatment approach using the medication palbociclib, known by its brand name IBRANCE, compared to standard chemotherapy. Palbociclib is a type of medication that helps to slow down the growth of cancer cells. The trial will also involve other medications such as tamoxifen, exemestane, letrozole, anastrozole, and paclitaxel, which are commonly used in treating breast cancer.
The purpose of the study is to determine how effective palbociclib is when used before surgery, known as neoadjuvant treatment, in improving the response of the cancer to treatment and the long-term outcomes for patients. Participants in the study will receive either palbociclib or standard chemotherapy, and their response to the treatment will be monitored over a period of time. The study will also look at the safety of the treatments and how they affect the quality of life of the participants.
Throughout the study, participants will undergo regular assessments to monitor the size and characteristics of their tumors, as well as their overall health. The study will help to understand the best treatment options for patients with this type of breast cancer and may lead to improved treatment strategies in the future. The trial is part of a larger research effort to tailor cancer treatments based on the specific characteristics of the tumor, which is known as a translational phase II trial based on molecular subtypes.



Sweden