The size of CD8+ infiltrating T cells is a prognostic marker for esophageal squamous cell carcinoma
Abstract In many malignancies, an increased number of tumor-infiltrating lymphocytes (TILs) is recognized as a favorable prognostic factor, with exceptions such as renal cell carcinoma. However, the clinical significance of TIL size remains unclear. T-cell activation by mitogens increases cell size,...
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| Main Authors: | , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-07-01
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| Series: | Scientific Reports |
| Subjects: | |
| Online Access: | https://doi.org/10.1038/s41598-025-10885-3 |
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| Summary: | Abstract In many malignancies, an increased number of tumor-infiltrating lymphocytes (TILs) is recognized as a favorable prognostic factor, with exceptions such as renal cell carcinoma. However, the clinical significance of TIL size remains unclear. T-cell activation by mitogens increases cell size, partly via c-myc expression, suggesting that larger T cells may be more activated. We hypothesized that TIL size might be prognostically relevant in cancer patients. Here, we examined the relationship between the size and number of tumor-infiltrating CD8 + T cells and patient prognosis in 96 cases of esophageal squamous cell carcinoma (ESCC). We employed artificial intelligence (AI) analysis to quantify the mean size of intratumoral CD8+ T cells in each sample. Patients were then divided into “Large” and “Small” CD8+ T cell groups according to the median T-cell size. Similarly, we classified cases into “High” and “Low” groups based on CD8 + T-cell numbers. We found that patients in the Large CD8+ T cell group had significantly better overall survival than those in the Small CD8+ T cell group by a univariate analysis (p = 0.039), but the difference did not reach statistical significance in a multivariate analysis (p = 0.054). Patients in the High CD8 + T cell group had better outcomes than those in the Low CD8+ T cell group. There was no significant correlation between CD8+ T cell size and count, and their combination (Large/High) identified a subgroup of patients with the most favorable prognosis. Our findings suggest that CD8+ T cell size could serve as an independent prognostic marker in ESCC. |
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| ISSN: | 2045-2322 |