Drug-induced immune suppression may be used intentionally to inhibit the immune response to allow organ transplant to be effective or for treatment of an autoimmune disease. However, immune suppression can also be an inadvertent complication of treatment. It occurs when cytotoxic agents are used in the treatment of malignancies where normal dividing cells are affected by the same mechanism that inhibits malignant cells. The most common result of drug-induced immune suppression is leukopenia.
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