The charity has invested some £140m into cancer research
Leading scientists are gathering in St Andrews to discuss the latest advances in cancer research.
The conference is being held to celebrate the 30th anniversary of the Association for International Cancer Research (AICR).
About 200 researchers from 28 different countries will attend the meeting, which runs until Friday.
Nobel prize winner Sir Tim Hunt and cancer survivor Dave Cook are among those who will be addressing delegates.
Mr Cook, 24, drove a London taxi from Lancashire to Turkey on a fundraising venture after undergoing treatment for testicular cancer.
The conference aims to examine how advances in laboratory-based cancer research and the use of model systems can lead to better treatments.
The AICR, based in St Andrews, awards grants to cancer scientists around the world to allow them to investigate the prevention, diagnosis and treatment of the disease.
Since being established, the charity has invested almost £140m into research.