The American Cancer Society and Health Policy Institute, Japan, recently co-hosted a meeting in Tokyo of American Cancer Society University (ACSU) alumni, Japan Initiative for Cancer Patients (JIP) members, and patient representatives of prefecture cancer committees. Approximately 50 participants convened to discuss state-level obligations under the new National Cancer Act of Japan and opportunities for nongovernmental organizations (NGOs) and other advocates to ensure the implementation of evidence-based patient support programs under the new legislation. Members of the Diet (Japan’s national legislature), policy advisers, and organization leaders presented case studies of state-level cancer planning processes and outcomes. Society partners were among those who shared best practices and action plans for future networking, prioritizing, and evaluation. Prefecture committee members gained a better understanding of their role in regional cancer planning, while ACSU alumni and JIP members learned more about their responsibility to support state committee representatives in their new positions.