A Prospective Study on the Treatment of Recurrent/Refractory/Intolerable NSAA With Lusutrombopag

Administer lusutrombopag at 3mg/qd orally for 12 weeks (lusutrombopag starting dose is 3mg, once daily. After 2 weeks of continuous administration, the dose can be increased by 3mg every 2 weeks based on the platelet count and safety of the subject. The dose can be gradually increased to 9mg/d over a total of 12 weeks). The course should be at least 3 months. When the platelet increase is \<20×109/L, the daily dose can be increased by 3mg up to a maximum of 9mg/day; when the platelet increase is ≥50×10\^9/L and ≤200×10\^9/L, the dose can be maintained; when the platelet count is ≥200×10\^9/L and ≤400×10\^9/L, the daily dose can be reduced by 3mg; when the platelet count is \>400×10\^9/L, the drug can be suspended and resumed when the platelet count decreases to \<200×10\^9/L, with the daily dose reduced by 3mg. In this case, if the lowest dose of 3mg/day is used, the drug can be suspended. Responders continue treatment until 6 months.