What is the focus of targeted therapy in cancer treatment?

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Targeted therapy in cancer treatment specifically aims to target and interfere with specific molecular markers or pathways that are involved in the growth and progression of cancer cells. This approach is based on the understanding that certain genetic mutations or abnormalities are associated with specific types of cancer. By focusing on these particular markers, targeted therapies can inhibit cancer cell proliferation and survival while minimizing the impact on normal, healthy cells.

This specificity allows for a more personalized treatment regimen, often resulting in better outcomes and fewer side effects compared to conventional therapies that may be less selective. For example, targeted therapies can block signals that promote tumor growth, interfere with the function of specific proteins essential for cancer cell survival, or even block blood vessel formation that tumors need to grow.

In contrast, the other options do not align with the fundamental principles of targeted therapy. Eliminating all cells in the body would be detrimental and is not a goal of any cancer treatment strategy. Strengthening the immune system can be a general approach in treating cancer but is distinct from targeting specific cancer markers. Inducing apoptosis in all cell types lacks the precision of targeted therapy and would not differentiate between cancerous and normal cells, potentially causing harm to healthy tissues.