ATM and neoplasm: The results (Fig. 2a, b) showed the PALB2-inactivated tumours to have a predominantly HR-deficient signature (GEL-Ovary_common_SBS3), whereas the ATM-inactivated tumours had a lesser HR-deficiency signature with others (i.e. GEL-Ovary_common_SBS5 and GEL-Ovary_common_SBS1+18) appearing more prominent.