Dame Sally Davies: Genome data in patients' interest

Cancer patients should be routinely offered DNA tests to help select the best treatments for them, according to England's chief medical officer.

Prof Dame Sally Davies says in her annual report that the NHS must deliver her "genomic dream" within five years.

She told the Today programme that patients should understand this is not just about "altruism" but there is a real benefit for them. She insisted there would be proper data protection in place.