Summary: | A wide range of toxic complications of BCR-ABL tyrosine kinase inhibitors therapy due to non-targeted inhibition of other protein kinases. This is of particular importance in the treatment of patients with Ph-positive lymphoblastic leukemia, who receive, in addition to tyrosine kinase inhibitors, cytotoxic drugs, enhancing myelotoxicity and, as a consequence, infections and thrombo-hemorrhagic complications. In addition, complex inter-drug interactions lead to the manifestations of combined toxicity. This article presents a case report of patient with relapsed acute Ph-positive lymphoblastic leukemia, treatment of which was accompanied by numerous complications, especially during treatment of II and III generation tyrosine kinases inhibitors.
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