The theme of this year's World Cancer Day is closing the care gap.
Since Ruby died, around 15,000 children and young people have been diagnosed with cancer in the UK - and over a million worldwide. It's not as rare as you might think.
But the numbers are small compared to adults which is why big pharma doesn't invest in paediatric cancer research - it just doesn't make good business sense compared to the more common adult cancers.
As a result, much of the vital research being carried out into childhood cancers is being funded by bereaved families.
We made this video to mark World Cancer Day and highlight why we do what we do. If it inspires you to get involved, please take a look at our fundraising page here.