UK scientists have undertaken a huge "archaeological dig" of cancer in the UK, analysing the complete genetic make-up - or whole genome sequence - of tumours from about 12,000 patients.
The team says the unprecedented amount of data allowed them to uncover new patterns in the DNA of cancer - hinting at causes that are not yet understood.
They add that the genetic clues will ultimately help improve diagnosis and treatment.
The research is published in Science.
Cancer can be thought of as a corrupted version of our own healthy cells - mutations to our DNA change our cells until eventually they grow and divide uncontrollably.
Traditionally many cancers have been categorised by doctors based on where they are in the body and the type of cells involved - but whole genome sequencing can provide another layer of key information.
'Dinosaur footprints'
Whole genome sequencing is relatively new, but is already available on the NHS for a small number of specific cancers, including some blood cancers.
The NHS long-term plan aims to make it more widely available, through the NHS Genomic Medicine Service. READ MORE...
