Two long-term BRCA2 survivors both diagnosed at aged 32 had mucinous tumours (the remaining histologies were high-grade serous: BRCA1=2, adenocarcinoma not otherwise specified BRCA1=5; endometrioid BRCA2=1), raising doubts as to whether these were HRD-driven tumours. This evidence concerns the gene BRCA1 and mucinous neoplasm.