A Study of HMPL-295S1 in Patients With Advanced Malignant Solid Tumors

"Patient starts the initial dose treatment with 5mg QD of HMPL-295S1, during dose escalation, single-dose PK evaluation will be carried out firstly in each dose group.~At the first therapeutic dose level, the single-dose treatment period is 5 days; from the 2nd dose level, the sponsor can determine the adjustment of single-dose treatment period to 3-5 days based on the available PK profile.~Subsequently, the patients will receive oral HMPL-295S1 QD continuously in a therapeutic cycle of 28 days (Day 1 - 28 of each cycle), until reaching the criteria on the end of treatment. The patients in RP2D extended cohort will enter the consecutive treatment period directly."