BRCA1 and cancer: All Health Care Professionals (HCPs) working within cancer settings may be faced with issues such as: (1) discussing genetic testing for a germline cancer susceptibility gene; (2) dealing with the consequences of high-risk genetic diagnoses such as BRCA1/2 or Lynch Syndrome; (3) helping patients to contextualise such information correctly; (4) assisting patients’ decision-making about further risk-reducing treatment options; and (5) facilitating the sharing of information with family members.