Breast cancer is the most common malignant tumor in women diagnosed globally and the leading cause of cancer-related death. Globally, the prevalence of breast cancer is increasing with time. Globally, breast cancer is the most prevalent type of cancer. The incidence of breast cancer is linked to several risk factors, such as genetic and inherited predispositions. Breast cancers can be of many different forms. The molecular features of breast cancer, such as the activation of hormone receptors (PR, ER, and HER2) and human epidermal growth factor receptor 2, genetic alterations (BRCA1/2 and phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha [PIK3CA] mutations), and immune system markers (PD L1, tumour-infiltrating lymphocytes [TIL], and programmed death-ligand 1 [PD L1]) may impact treatment strategies. sufferers.