Expression of Signal Regulatory Protein Alpha in Tumor Cells is the Key Factor in Intrahepatic Cholangiocarcinoma
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View abstract on PubMed
Summary
This summary is machine-generated.Signal-regulatory protein alpha (SIRPα) expression in tumor cells predicts prognosis in intrahepatic cholangiocarcinoma (ICC) patients after surgery. Tumor SIRPα is a more critical prognostic factor than macrophage SIRPα.
Area Of Science
- Immunology
- Oncology
- Surgical Pathology
Background
- Signal-regulatory protein alpha (SIRPα) acts as a "don't eat me" signal in immunity.
- The prognostic role of SIRPα in intrahepatic cholangiocarcinoma (ICC) following hepatectomy is understudied.
Purpose Of The Study
- To investigate the relationship between SIRPα expression in tumor cells and macrophages and patient prognosis after hepatectomy for ICC.
- To determine if SIRPα expression correlates with clinicopathological features and immune markers like PD-L1 and CD8.
Main Methods
- Analysis of 117 patients who underwent hepatectomy for ICC.
- Immunohistochemical evaluation of SIRPα, PD-L1, and CD8 expression.
- Statistical analysis of SIRPα expression, clinicopathological data, and survival outcomes.
Main Results
- Tumor cell SIRPα positivity was linked to lower CEA levels and fewer perihilar type ICC cases.
- Macrophage SIRPα positivity correlated with a higher rate of lymph node metastasis.
- Tumor cell SIRPα positivity independently predicted both disease-free and overall survival in ICC patients.
Conclusions
- SIRPα expression in ICC tumor cells is a significant independent prognostic factor for patient outcomes after hepatectomy.
- Tumor cell SIRPα is more critical for prognosis than macrophage SIRPα in ICC.
- SIRPα expression in ICC tumor cells did not correlate with PD-L1 or CD8 status.
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