This book shares cutting-edge evidence on Hereditary Breast and Ovarian Cancer (HBOC) treatment, delivering facts on breast cancer, gynecologic oncology, and basic research to contribute to clinicians' practices. It is based on the best-chosen works presented at the Japanese Organization of Hereditary Brest and Ovarian Cancer (JOHBOC) in 2022. The volume collectively provides a comprehensive view of HBOC management with the aim to contribute to the equalization and dissemination of HBOC practice as well as to serve as a foundation for future advances in the treatment of the diseases and medical practice.While it sheds light on the present state of HBOC management in Japan, whose cases are on the increase due to partial coverage by public insurance of the HBOC diagnosis and treatment, the scope of topics covered maximizes reader insight into the latest clinical techniques, basic experimental results along with clinical controversy. Practical Guide to Hereditary Breast and Ovarian Cancer II &Annual Meeting of JOHBOCaims to entertain a broad readership and serves as a valuable resource for professionals involved in HBOC treatment, including breast surgeons, obstetricians, gynecologists, pancreatic cancer surgeons, and urologists. The current information is crucial for informed decision-making and practice, making it beneficial for certified genetic counselors and medical staff specializing in HBOC. Additionally, it serves as an excellent reference for HBOC patients and their families.