Studies like this are fundamental to improving our understanding of rarer breast cancer groups. The rich data studied from patients across England and Wales, coupled with the clear and actionable results, means that a big difference can be made for these at risk women.
More top news
A girl from Neston is doing a trike ride in memory of her sister. Georgie died in 2014, just five days after being born without a windpipe.
The latest weather update plus viewers' photos for ITV Granada
Not a bad Bank Holiday weekend - mostly fine, sunny and warm! Always warmest further west