Patients with PIN3 16-bp duplication (A2A2) of TP53 were more likely to have an invasive ductal carcinoma form, T3 stage tumor size, node involvement (N0 and N1), and M0 metastasis status compared to patients with the A1A1 or A1A2 genotype. Here, TP53 is linked to invasive ductal breast carcinoma.