Our act on fertility preservation for young breast cancer patients in our single institute.

Abstract

109 Background: Along with increasing number of newly diagnosed Japanese breast cancer patients, the number of breast cancer survivors in reproductive age is also increasing. Among newly diagnosed Japanese breast cancer patients, 3182(6.6%) are under age 40 in 2011, which was 1610 in 2006. In our institute, we have been cooperating with gynecologists and providing fertility preservation program since 2010. Our aim is to access our team management, clinical impact and outcome of fertility preservation among young breast cancer patients in our institute. Methods: A patient, 1)without distant metastasis, 2)systemic chemotherapy and/or hormonal therapy planned, 3)within reproductive age and 4)willing to preserve fertility, will be referred to oncofertility clinic. Chart review was done retrospectively. Results: Ninety-five patients had consultation to the oncofertility clinic between April 2010 and April 2015. The average age at consultation was 34.1(range 22-44). Almost all patient had invasive cancer; cStage0:4%, cStageI:31%, cStageII:53%, cStageIII:11%. Fifty-five percent had estrogen receptor (ER) positive/HER2 negative, 31% had ER positive/HER2positive, 2% had ER negative/HER2 positive and 12% had ER negative/HER2 negative breast cancer. Forty-five had counseling without any procedure, 22 underwent ovarian tissue cryopreservation, 17 underwent embryo cryopreservation and 8 underwent oocyte cryopreservation. Because observation period is still short, we haven’t had any case that got pregnant or delivered, yet. Conclusions: The number of patient who choose to underwent fertility preservation is increasing. We have actually started facing proposition, when we shall lay aside adjuvant therapy and let them plan to be conceived. Taking risk into account, we are now evaluating the safety of cancer treatment and outcome of each procedure which undergone multidisciplinary deliberate decision-making process.