In molecular medicine, biopsies have made major improvements, particularly in cancer. Because of technological developments in the equipment used for biopsies, the molecular characterization of malignancies has improved. They've been widely used to diagnose cancer, figure out the shape of the tumour, and figure out the disease stage. The evolution of the cancer biopsy market hinges on the development of molecular testing. In clinical investigations, biopsies are used to assess pharmaceutical response rates, especially in patients undergoing epidermal growth factor receptor (EGFR) therapy.