patient: BRCA1 c.5266dupC het, p.Gln1756Profs*74 and BLM c.1642C>T het, p.Gln548Ter, which are known pathogenic variants; the patient was diagnosed with Grade 3 triple negative, invasive ductal carcinoma at the age of 32 years. Here, BLM is linked to invasive ductal breast carcinoma.