“…Gene testing can only be performed in accordance with strict professional standards in accredited laboratories. BRCA1/2 mutation carriers or other mutations holders with high penetrant genes (see above) should also be informed and various therapeutic options (such as close follow-up, oncopsychological guidance, lifestyle counselling, family screening, reproductive counselling, chemoprevention, and prophylactic mastectomy) should be discussed only in specialized centres with adequate knowledge and experience ( 21 ). During genetic testing, BRCA mutations are most commonly examined; however, if these are not present and if there is significant family history, other less common genetic disorders should also be considered (Li-Fraumeni syndrome: p53 mutation; Cowden’s syndrome: PTEN mutation; ATM mutation; Lynch-syndrome: MLH1 , MSH2 , MSH6 , EPCAM , PMS2 mutation, RAD51 mutation, BRIP1 mutation, PALB2 mutation, CHEK2 mutation, Peutz-Jeghers syndrome: STK11 mutation, CDH1 mutation).…”