Merely counting CTCs (enumeration) is not enough; which molecular profile they carry is critical for therapeutic decisions.
Characterization Markers
| Marker | Information | Clinical Relevance |
|---|---|---|
| PD-L1 | Immune checkpoint | Immunotherapy response prediction |
| HER2 | Receptor tyrosine kinase | HER2-targeted therapy selection |
| ER/PR | Hormone receptors | Hormonal therapy response |
| Vimentin/N-cadherin | EMT markers | Metastatic potential |
| Ki-67 | Proliferation | Tumor aggressiveness |
Characterization Method
CTCs are stained with a multicolor flow cytometry panel. Surface markers (PD-L1, HER2, ER/PR) and, when needed, intracellular markers (Ki-67, vimentin) are evaluated simultaneously. DAPI nuclear staining confirms cell integrity.
For more about our CTC characterization service, contact us.
Rx-only——凭处方的筛查检测. Galleri® 不是诊断检测。阳性结果不代表癌症诊断；阴性结果不排除癌症。该检测不能替代医生推荐的常规癌症筛查。 Galleri® 不能检测所有癌症类型。