Complete response to neoadjuvant chemoradiotherapy in rectal cancer is associated with RAS/AKT mutations and high tumour mutational burden oleh Joanne D. Stockton, Louise Tee, Celina Whalley, Jonathan James, Mark Dilworth, Rachel Wheat, Thomas Nieto, S-CORT Consortium, Ian Geh, João D. Barros-Silva, Andrew D. Beggs