AACR Drug Discovery and Development (AACR D3) 2026 is a premier oncology conference organized by the American Association for Cancer Research that brings together researchers, clinicians, pharmaceutical and biotechnology leaders, and regulatory experts involved in cancer drug discovery and development. The meeting focuses on advancing innovative cancer therapeutics, emerging technologies, biomarkers, precision oncology, artificial intelligence in drug development, and strategies to accelerate the translation of scientific discoveries into effective cancer treatments. The conference features plenary sessions, educational programs, case studies, poster presentations, networking opportunities, and discussions on the challenges and future directions of oncology drug development.