Test exit process
SAEs

① If the patient signs the ICF but is not randomized, the investigator will document the patient's demographic characteristics and reasons for withdrawal and whether AEs or SAEs occurred during the presentation period.② If the subject withdraws from the trial halfway, the investigator should try to complete the inspection and evaluation of various indicators within 2 weeks after withdrawal (preferably before the start of other treatments) as the final follow-up measures. Investigators should contact patients lost to follow-up. For patients who terminate the trial early, the date of the last dose and the reason for early termination should be recorded in the CRF.Subjects who withdraw from the trial after randomization cannot be replaced. Each randomization number is uniquely associated with each subject and cannot be reused.