At just 28 years old Dave lost his twin brother Mark, a doctor from Bristol, to skin cancer. Mark was a passionate ambassador for Cancer Research UK. Mark signed up to be part of the PEACE study, which will help scientists, including Dr Mariam Jamal-Hanjani, understand more about the late stages of cancer.
Let's beat cancer sooner. Find out more about our progress this year at cruk.org/our-year
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