TP53 and neoplasm: Thirty-eight differential gene expression analyses can be performed through ‘targeted expression analyses’ (one by one) or ‘exhaustive expression analyses’ (all at the same time): nature of the tissue (healthy breast tissue versus tumour-adjacent tissue versus tumour tissue) (n = 9); receptor statuses (n = 4); nodal status (n = 1); histological types (n = 1); SBR grade (n = 1); NPI (n = 1); age (n = 2); p53 status (n = 3); intrinsic molecular subtypes (n = 9); basal-like (PAM50) and/or TNBC (IHC) (n = 3); TNBC subtypes (n = 2); and integrative clusters (n = 2).