This clinical trial is focused on young women with breast cancer who are undergoing treatment with chemotherapy. The study aims to explore the effectiveness of preserving fertility through a process called oocyte or embryo cryopreservation. This involves freezing eggs or embryos for future use. The trial will use two medications, Follitropin Beta and Follitropin Alfa, which are proteins that help stimulate the ovaries to produce eggs. These medications are administered through a small injection under the skin.
The purpose of the study is to evaluate how well this fertility preservation method works in terms of the number of mature eggs that can be successfully frozen. Participants will undergo a controlled ovarian stimulation process, which is a way to encourage the ovaries to produce multiple eggs. The study will monitor the quality and number of eggs and embryos that can be preserved. It will also assess the safety of the procedures and any potential impact on the timing of cancer treatment.
Throughout the study, the participants’ ovarian reserve, which is the capacity of the ovaries to produce eggs, will be evaluated. This is done by measuring levels of a hormone called AMH and counting the number of small follicles in the ovaries. The study will also look at the effects of chemotherapy on fertility, such as the risk of chemotherapy-induced menopause. The trial will follow participants for up to ten years to track pregnancy outcomes and overall health. This research aims to provide valuable insights into preserving fertility for young women undergoing cancer treatment.



France