3. At least one measurable target tumor lesion as accessed by RECIST v1.1 criteria.
4. Radiographically confirmed brain metastasis(es) , with stable CNS symptoms within 2 weeks prior to enrollment.
5. Documented ROS1 gene fusion identified by an approved molecular testing method (FISH, RT-PCR, or NGS).
6. Considered by the investigator to be candidates for Taletrectinib treatment ; OR Patients with ≤6 months of prior Taletrectinib exposure enrolled retrospectively. (Note: For retrospective patients deceased before enrollment, waiver of informed consent is required. Patients who initiated and discontinued treatment within 6 months prior to signing informed consent are eligible).
7. Signed Informed Consent.
You may not be if
Patient presenting with any of the following criteria will not be included in the study：
1. Patients with driver gene mutations/alterations that have approved targeted therapies , including but not limited to EGFR, ALK, RET, etc.
2. Currently participating in other interventional clinical trials or having received investigational drug treatment within 4 weeks prior to enrollment .
3. Pregnancy or breastfeeding.
4. Patients with uncontrolled co-morbidities who are assessed by the investigator not to receive targeted therapy.
5. Other conditions that are assessed by the investigator to be unsuitable for enrollment in this study.
