Posaconazole Tablet As Primary Prophylaxis of HSCT Patients with Gastrointestinal GVHD

Posaconazole tablet will be given at a dose of 300mg q12h on day 1 and 300mg qd from day 2 for patients who receive HSCT as the primary prophylaxis of IFD, after which the Posaconazole plasma concentration on day 5 will be examined. Once patients developed GI GVHD, first line therapy and second line treatment will be reviewed according to the condition, besides which the Posaconazole plasma concentration would be detected again on the first, third and fifth day after onset of GI GVHD symptoms to monitor the impact of GI GVHD on the Posaconazole plasma concentration.