Prognostic impact of tumor-infiltrating lymphocytes in high grade serous ovarian cancer: a systematic review and meta-analysis

Therapeutic Advances in Medical Oncology
Jiatao HaoYan Xue

Abstract

Tumor-infiltrating lymphocytes (TILs) are involved in the antitumor immune response. The association between prognosis in patients with TILs and high-grade serous ovarian cancer (HGSOC) remains obscure, with some studies reporting conflicting results. We conducted an extensive literature search of electronic databases and retrieved prognostic data of each selected subtype of TILs, including CD3+, CD4+, CD8+, CD103+, and PD-1+ TILs. The fixed-effects model was applied to derive the pooled hazard ratio (HR) and 95% confidence interval (CI) of these markers. The systematic review process yielded 19 eligible studies comprising 6004 patients with HGSOC. We compared TIL-positive and TIL-negative patients, and the pooled HRs from the multivariate analysis revealed that intraepithelial CD8+ TILs were positively correlated with progression-free survival (PFS, HR 0.46, 95% CI 0.25-0.67) and overall survival (OS, HR 0.90, 95% CI 0.86-0.9); stromal CD8+ TILs were positively correlated with OS (HR 0.61, 95% CI 0.36-0.87). Furthermore, the pooled HRs from univariate analysis demonstrated that intraepithelial CD3+, CD4+, CD8+, and CD103+ TILs were positively associated with OS (HR 0.58, 95% CI 0.44-0.72; HR 0.37, 95% CI 0.16-0.59; HR 0.51, 95...Continue Reading

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Citations

Feb 10, 2021·Journal of Gynecologic Oncology·Yusuke KobayashiDaisuke Aoki

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