Today, 19 October, World Breast Cancer Day, the Hospital de Sant Pau also commemorates the fact that the female team formed by Dr. M. Carmen Alonso and Dr. Montserrat Baiget, both from the Hospital de Sant Pau, were pioneers in the study of hereditary breast and ovarian cancer by searching for the mutations in the BRCA 1 and 2 genes that predispose to these two types of disease. The Hospital de Sant Pau currently has one of the largest genetic databases in the world with over 2,000 samples.