Eltrombopag for Chemotherapy-induced Thrombocytopenia

The subjects will initiate treatment with 75 mg eltrombopag. Platelet counts is obtained weekly and dose adjustment should be done according to platelet counts, and maximum dose should not exceed 75 mg daily. Subjects whose platelet count ≤100×109/L，the eltrombopag dose will maintain. If platelet count \>100×109/L for 2 weeks, the subjects need to reduce the dose of eltrombopag to the next lower dose or lower frequency. If subjects whose platelet count exceeds 100×109/L for 4 weeks，already have reduced the dose of eltrombopag to 25mg once every other day during the treatment period, eltrombopag can be stopped for observation, until platelet counts fall below 100×109/L. If the subjects do not need further chemotherapy or radiotherapy, the subjects can taper off eltrombopag if the platelet is greater than 50×109/L.