Olverembatinib Combined With Venetoclax and Azacitidine in Blast Phase Ph Chromosome-positive CML

Even in the TKI era, the outcoms of patients with blast phase is still poor.The response rate to conventional intensive chemotherapy is only 12.5% and the 5-year survival rate is 0 for patients with myeloid blast crsis. The response rate of TKI monotherapy is about 50% and the response rate is further improved when combined TKI and chemotherapy for patients with lymphoid blast crsis. The induction remission rate of chemotherapy alone for patients with Ph-positive acute lymphoblastic leukemia is 50-60%, and the remission rate increases to more than 95% when combined with TKI. Therefore, the application of TKI for patients in the blast crisis phase is of great significance. Olverembatinib is the only third-generation TKI drug approved in the Chinese mainland at present. Preclinical research data show that olverembatinib has a significant inhibitory effect on wild-type and mutant ABL resistant to the first and second-generation TKIs, as well as some complex mutations resistant to ponatinib. Phase I and II clinical studies have shown that for CML patients in the chronic and accelerated phases with resistance or intolerance to various TKIs, with or without T315I mutations, there are significant hematological and molecular responses and survival benefits. Olverembatinib can also inhibit many other kinases related to tumors. In vitro studies have shown that olverembatinib downregulates MCL-1 expression and acts synergistically with BCL-2 inhibitors to induce apoptosis of AML cells. …

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Hui Wei, MD  ·  13132507161  ·  weihui@ihcams.ac.cn

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