There are many new treatments that are targeting specific mechanisms of tumor growth. For example, there are drugs that can block new blood vessel formation or target specific tumor enzymes to inhibit tumor growth. Many of these new agents are being investigated in clinical trials. Because these drugs block pathways that are more active in tumor cells, they are not as damaging to normal cells. For patients this often means fewer serious side effects. Sometimes these targeted therapies are combined with chemotherapy to try to make the chemotherapy more effective.
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