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For example, assuming a 99% kill per cycle of chemotherapy, a tumor of 10 11 cells would be reduced to less than one cell with six treatment cycles: 10 11 * 0.01 6 < 1. [3] However, the tumor can also re-grow during the intervals between treatments, limiting the net reduction of each fractional kill. [4]
Cancer cells can also cause defects in the cellular pathways of apoptosis (programmed cell death). As most chemotherapy drugs kill cancer cells in this manner, defective apoptosis allows survival of these cells, making them resistant. Many chemotherapy drugs also cause DNA damage, which can be repaired by enzymes in the cell that carry out DNA ...
Radiation therapy or radiotherapy (RT, RTx, or XRT) is a treatment using ionizing radiation, generally provided as part of cancer therapy to either kill or control the growth of malignant cells. It is normally delivered by a linear particle accelerator .
External beam radiation therapy (EBRT) is a form of radiotherapy that utilizes a high-energy collimated beam of ionizing radiation, from a source outside the body, to target and kill cancer cells. A radiotherapy beam is composed of particles which travel in a consistent direction; each radiotherapy beam consists of one type of particle intended ...
By attaching a chemotherapy drug to an antibody, doctors are able to deliver more potent cancer-fighting medicines directly into tumor cells, all while causing fewer side effects.
Chemoimmunotherapy is chemotherapy combined with immunotherapy.Chemotherapy uses different drugs to kill or slow the growth of cancer cells; immunotherapy uses treatments to stimulate or restore the ability of the immune system to fight cancer. [1]
Chemotherapy kills cancer cells which can help prevent the disease returning. There are many types of chemotherapy drugs and patients can take the treatment as tablets at home, with regular check ...
Cancer treatments are a wide range of treatments available for the many different types of cancer, with each cancer type needing its own specific treatment. [1] Treatments can include surgery, chemotherapy, radiation therapy, hormonal therapy, targeted therapy including small-molecule drugs or monoclonal antibodies, [2] and PARP inhibitors such as olaparib. [3]