When people ask me what I do, I always need to take a little time to think. Partly because STP is a mix of so many varied experiences that every week is different to the previous one, and partly because my own understanding of my specialism keeps evolving as I move through these experiences. When I first applied for this course, I thought I had a reasonable understanding of what cancer genomics was. But now I see how naive I was and that three years is not anywhere near enough time to fully comprehend this very diverse and quickly developing area of science. So summarising it all in a few paragraphs will be a challenge but… let’s give it a go!