A Clinical Study of [225Ac]Ac-FAPI-XT(XT117) Injection in Patients With Advanced Solid Tumors

High intensity and large amounts of off-target uptake by FAP molecular imaging Previous systemic antitumor therapy (including prior chemotherapy, radiotherapy, immunotherapy, and other investigational drugs) ≤28 days before receiving study therapy; previous treatment with Chinese medicine with anti-tumor indications within 2 weeks before receiving study therapy Uncontrolled diabetes, with baseline fasting blood glucose > 2×ULN Clinically significant serious cardiovascular disease, including but not limited to: a. >Grade II congestive heart failure as per New York Heart Association (NYHA) ; b. Unstable angina pectoris or myocardial infarction within 6 months before the first administration of the study drug; c. Severe arrhythmia within 6 months prior to the first administration; d. Poorly controlled hypertension (patients who keep the blood pressure to ≤ Grade 2 hypertension [CTCAE5.0] with hypotensor are allowed for enrollment); e. QTc>450 ms (male) or 470 ms (female), congenital prolonged QT syndrome, and use of medications that prolong QT Clinically serious thromboembolic disease within 6 months prior to the first administration of the study drug Major surgery within 4 weeks prior to the initial administration of the study drug History of severe gastrointestinal ulcers or perforations or history of intestinal obstruction within 6 months prior to the first administration Active infection requiring systemic treatment (oral or intravenous administration) within 2 weeks prior to the first administration, except for topical treatment History of non-infectious interstitial lung disease (ILD), such as idiopathic pulmonary fibrosis, idiopathic interstitial pneumonia, pneumoconiosis, and drug-related interstitial pneumonia, or severe impairment of lung function Had other malignancies within 5 years prior to screening (except clinically cured early stage malignancies)