Abstract
The clinical data of five cases of relapsed/refractory (R/R) Philadelphia chromosome-positive acute B-lymphocytic leukaemia (Ph+B-ALL) treated with Bcl-2 inhibitor venetoclax combined with tyrosine kinase inhibitor (TKI) and dexamethasone-containing low-dose chemotherapy regimen at Zhengzhou University Cancer Hospital were analyzed, and the efficacy and safety were evaluated. Ponatinib was used in two of the five patients with T315I mutation, and flumatinib was used in other three patients. The results showed that, of the four minimal residual disease (MRD) positive patients, three achieved complete molecular remission (CMR) in the short term and one was ineffective. Another patient with morphological recurrence reached CR in one month. The overall response rate was 80%. Treatment related adverse reactions included mild skin pigmentation, gastrointestinal reactions, fatigue, and grade Ⅰ-Ⅱ bone marrow suppression.
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