The Correlation Between Ripretinib Exposure and the Efficacy and Safety in Patients with Advanced GISTs

Inclusion Criteria: * Patients who are aged ≥ 18 years. * Gastrointestinal stromal tumors confirmed by histopathological examination, and CD117 and/or DOG-1-positive by immunohistochemistry. * patients who are currently receiving Ripretinib treatment. * Subjects must have at least one measurable lesion based on mRECIST v1.1 criteria, and have undergone at least one radiographic evaluation for efficacy analysis. * Patients with an Eastern Cooperative Oncology Group Performance Status (ECOG PS) of 0 to 4 * Patient informed consent and signed written consent form. * The patient was compliant and voluntarily scheduled for follow-up, treatment, laboratory tests, and other study procedures. Exclusion Criteria: * Unable to complete at least 15 consecutive days of Ripretinib due to intolerance or disease progression. * Individuals with other serious acute or chronic physical or mental health problems, or abnormal laboratory test results that increase the risk associated with participation in the study or use of the drug, or that could interfere with the interpretation of study results, and who, in the opinion of the investigator, are not suitable for participation in the study.