Abstract
We performed a systematic review and meta-analysis to fully investigate the thrombocytopenia of platelet-derived growth factor receptor kinase inhibitors (PDGFR-TKIs) in cancer patients. Databases were searched for randomized, controlled trials (RCTs) treated with PDGFR-TKIs until January 2021. The relevant RCTs in cancer patients treated with PDGFR-TKIs were retrieved, and the systematic evaluation was conducted. Nineteen RCTs and 3962 patients were included. Our study suggests that PDGFR-TKIs significantly increased the risks of all-grade (risk ratio [RR], 5.72; 95%CI, 4.32-7.59; P < .00001; I2 = 32%) and high-grade (RR, 5.65; 95%CI, 3.28-9.75; P < .00001; I2 = 0%) thrombocytopenia in cancer patients. Sunitinib is associated with the highest risk of thrombocytopenia among the included PDGFR-TKIs. The RR of high-grade thrombocytopenia varies significantly according to treatment line and median age. The available data suggested that the use of PDGFR-TKIs was associated with a significantly increased risk of thrombocytopenia.
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