若い女性の乳がんに関する国際会議「YWBCH 2026」、協賛企業・団体の募集を開始

― 若年乳がん医療の未来を、科学と共感で共創する2日間 ―

一般社団法人ＪＢＣＲＧ

2026年3月5日 23時00分

一般社団法人ＪＢＣＲＧ（代表理事：佐治重衡、所在地：東京都中央区）は、若年乳がんに特化した国際学会「The 3rd International Conference on Young Women’s Breast Cancer and Health（YWBCH 2026）」を、2026年11月14日（土）・15日（日）の2日間、大村進・美枝子記念聖路加臨床学術センター日野原ホール（東京都中央区築地）にて開催することをお知らせいたします。
本会議は、現地開催と一部ライブ配信を併用したハイブリッド形式で実施します。

■ 若年乳がんに特化した世界的ネットワークが東京に結集

若年乳がん（Breast Cancer in Young Women: BCYW）は世界的に増加傾向にあります。乳腺の発達している若年女性の乳がんは検診で用いられるマンモグラフィで発見することが難しく、発症機序、検診・診断方法、治療、サバイバーシップ支援など、多くの領域で科学的知見が十分ではありません。また、キャリアや経済的問題、妊娠・出産、家族の問題など、若い世代ならではの困難があります。

こうした背景から、若年乳がんの啓発と研究促進のため、29か国の医療専門家・研究者・支援者・経験者が参加する国際ネットワークBreast Cancer in Young Women Foundation（BCYWF）が設立されました。2024年（ポルトガル）に第1回国際会議を開催、2025年（インド）での第2回開催を経て、第3回にあたる本会議が日本（東京）で開催される運びとなりました。

ＪＢＣＲＧは、国際共同研究 POSITIVE試験等を通じ若年乳がん領域の課題に取り組んできた実績から、今回の会議を主催し、世界中のリーダーとともに最新の知見を共有し、若い女性の切実なニーズに応えるためにどのような研究や活動が求められるか議論します。

■ 会議テーマ～ Co-creating the Future with Science and Compassion ～
　　　　　　　　　　科学と共感で、若年乳がんの未来を共に創る

本会議では、若年乳がんに携わる臨床医・医療スタッフ・研究者・がん経験者・支援団体・企業等、ステークホルダーが一堂に会し、最新研究の共有と国際的な交流を促進します。2026年2月末日時点で、10人を超える海外からの著名な医師の来日・登壇が決定しています。

■ 開催概要

名称:The 3rd International Conference on Young Women’s Breast Cancer and Health（YWBCH 2026）
会期: 2026年11月14日（土）・15日（日）
会場: 大村進・美枝子記念聖路加臨床学術センター地下1階日野原ホール（東京都中央区築地）
形式: ハイブリッド（現地開催＋ライブ配信）
参加予定人数: 現地参加120名（最大200名収容）
共催: 一般社団法人ＪＢＣＲＧ／Breast Cancer in Young Women Foundation（BCYWF）
公式サイト：https://procomu.jp/ywbch2026/

主なプログラム（予定）
会長講演、特別講演、教育講演、シンポジウム、ワークショップ、ランチョンセミナー、一般講演

■ コメント

一般社団法人ＪＢＣＲＧ代表理事佐治重衡
「若年乳がんは、患者数が少ないがゆえに研究が遅れがちであり、国際連携が不可欠です。東京での第3回会議が、世界の英知を結集し、新たな未来を切り拓く契機となることを願っています。」

YWBCH2026 実行委員長清水千佳子（ＪＢＣＲＧ常任理事）
「若年乳がんの当事者の声、研究者の知見、企業や支援団体の技術と情熱が交わる場として、本会議を一層充実したものにしてまいります。」

■ 協賛・出展・広告等の募集について

本会議では、趣旨にご賛同いただける企業・団体から、協賛金、共催セミナー、広告掲載、出展、バナー広告、労務提供などのご支援を広く募集しています。詳細・お申し込みは以下のWEBフォームよりお願いいたします：https://online-form.jp/procom-ywbch2026sponsor
（透明性ガイドラインに基づく情報公開に同意のうえ実施いたします）

■BCYWFの発表について（本日同日発表）

2026 International Conference on Young Women’s Breast Cancer and Health, November 14–15, Tokyo, Japan

Breast Cancer in Young Women (BCYW) —typically under the age of 40—is on the rise across Asia, and around the globe. This alarming trend not only poses a serious threat to the lives of young women but also brings with it a unique set of medical, personal, and social challenges not typically seen in older patients.

To help close this gap, the Breast Cancer in Young Women (BCYW) Foundation, in collaboration with JBCRG(the Japan Breast Cancer Research Group, https://jbcrg.jp/en/), is pleased to announce the 3rd International Conference on Young Women’s Breast Cancer and Health, to be held November 14–15, 2026, in Tokyo. Venue: Hinohara Hall, Basement Level 1, St. Luke's Medical Center, Shin and Mieko Omura Memorial Building, Tsukiji, Chuo-ku, Tokyo.

This landmark event will confront the rising global incidence of BCYW—a complex health issue influenced by still-unidentified biological, molecular, and environmental risk factors. Alongside leading national experts in breast cancer research and care, the conference will feature several internationally recognized speakers. To learn more about the conference, click here.

Under the theme “Co-creating the Future with Science and Compassion,” the conference will advance the growing global dialogue on breast cancer in young women—a complex and intensifying health issue with profound medical, social, and economic implications worldwide.

Building on the success of previous meetings in Lisbon and New Delhi, this third convening marks a significant milestone. For the first time, the conference will be hosted in Japan and, more broadly, across Asia—a region representing diverse populations, distinct disease patterns, and more than half of global breast cancer cases.

WHY ATTEND?
This international conference offers a rare opportunity to engage with a global community of experts, researchers, clinicians, and advocates dedicated to understanding and combating breast cancer in young women. Attendees will:
• Engage in Cross-Disciplinary Collaboration: Work alongside international and national leaders to share expertise, bridge knowledge gaps, and co-create impactful, culturally relevant solutions.
• Access the Latest Breakthroughs: Stay at the forefront of science and care innovations that are transforming how breast cancer is understood, prevented, and treated in younger populations.
• The meeting aims to strengthen cross-border collaboration, encourage shared expertise, and promote solutions that are both culturally responsive and scientifically rigorous.

The conference will convene a multidisciplinary audience, including breast surgeons, medical oncologists, translational researchers, nurses, pharmacists, health economists, patient advocates, young breast cancer survivors, and supporters from Japan and around the world. Attendees can expect a dynamic scientific program featuring:

· Cutting-edge translational and clinical research

· Advances in prevention and early detection

· Personalized and precision treatment strategies

· Survivorship and long-term quality-of-life considerations

· Fertility preservation and psychosocial support

· Innovative advocacy, education, and health policy models

A central goal of the conference is not only to advance scientific knowledge, but also to empower young women and future generations with understanding, compassion, and access to life-saving resources. By fostering meaningful dialogue between clinicians, researchers, policymakers, and those with lived experience, the meeting seeks to reduce the global burden of breast cancer in young women and improve outcomes worldwide.

The Japan Breast Cancer Research Group (JBCRG) and BCYW Foundation ensure that every young woman has access to the latest advances in the field and to life-saving information, resources, and support.

Join us in this vital effort to advance research and treatment, raise targeted awareness, and create a future where every young woman has the knowledge and resources to protect herself from breast cancer.

About the BCYW Foundation

The BCYW Foundation is the leading research- and academically focused global organization dedicated solely to breast cancer in young women. Founded three years ago, it unites a diverse network of scientists, oncologists, surgeons, survivors, NGOs, and partners from 30 countries. The Foundation advances progress by providing scientific leadership, generating evidence, and fostering international collaboration. Grounded in thorough scholarship and aligned with the Foundation’s broader scientific leadership—including the peer-reviewed, open-access Journal of Young Women Breast Cancer and Health (YCBH, https://journals.lww.com/ywbc/)— the BCYW Foundation reflects our commitment to advancing evidence, influencing international discussions, and driving progress in the field. More recently, the BCYW Foundation launched The Youth Council for Breast Health (https://ycbh.org/), a global initiative to transform the future of young women’s health at campuses by raising awareness about breast health, breast cancer symptoms, and risk factors.

About the Japan Breast Cancer Research Group (JBCRG)

The JBCRG is a non-profit research organization that conducts and coordinates clinical studies to improve breast cancer treatment. JBCRG was established by a group of physicians committed to clinical research with the aim of improving treatment and outcomes for patients with breast cancer. It has grown into a national network of breast cancer specialists who voluntarily conduct clinical trials in addition to their clinical duties. We are supported in our activities by nurses, pharmacists, clinical laboratory technicians, clinical research coordinators, and many other professionals. We work together to maintain patient safety and the high quality of our clinical studies.

https://jbcrg.jp/en/