A Clinical Study of Hetrombopag Olamine Tablets for Thrombocytopenia Induced by Anti-tumor Treatment in Advanced Breast Cancer

"The first anti-tumor treatment cycle (multicenter, open label, randomized controlled):~When platelets were \<50\*109/L, oral hetrombopag 7.5 mg/day was started. When the platelet count is \>100\*109/L, the administration is suspended.~2nd anti-tumor treatment cycle (exploratory study): Prophylactic use (60 cases in the test group and the control group): oral hetrombopag 7.5 mg/day (initial dose) was started on d2 after anti-tumor treatment for 14 days."