Abstract
To investigate the predictive value of platelet doubling (platelet count doubling) after one course of hypomethylating agents (HMA) on the treatment response and efficacy of myelodysplastic syndrome (MDS). Clinical and pathological data of 75 patients who received HMA in our hospital from January 2017 to March 2022 were collected and analyzed. All patients were divided into two groups according to whether their platelet count doubled after one course of treatment, including platelet doubling group and non-doubling group, and statistical analysis was performed to compare the treatment response and efficacy between the two groups. In addition, platelet count changes were compared between azacitidine and decitabine therapy. Compared with the non-doubling platelet count group, the ORR of the doubling platelet group was significantly better after 3 courses of treatment (P =0.002), and there was a statistically significant difference in the number of HI between the two groups (P =0.005). In addition, the median survival time (MST) was 26 months in the platelet doubling group and 11 months in the non-doubling group (P =0.001). The overall survival (OS) and 1- and 2-year survival rates of the platelet doubling group were also significantly better than those of the non-doubing group. Multivariate COX analysis showed that platelet count doubling was an independent predictor of OS in MDS patients after 1 course of treatment (P =0.013). There was no significant difference in the response rate of platelet count doubling between MDS patients treated with azacitidine and decitabine (33.3% vs 23.8%, P >0.05). Platelet count doubling after one course of treatment can be used as a predictor of response rate and survival of demethylated drug therapy in MDS patients. In addition, there was no significant difference in the response rate of platelets in MDS patients treated with azacitidine or dicetabine.
Published Version
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