Prognostic Value of Lymphoid Infiltration and Aggregation in Cervical Cancer.

Background/objectives: Understanding the immune landscape in cervical cancer is critical to the development of improved therapeutics. This study investigated the immune microenvironment in early-stage cervical cancer with a focus on B and T cell immune aggregates, i.e., lymphoid aggregates (LAs) and tertiary lymphoid structures (TLSs). Methods: Using multispectral imaging, we interrogated a cohort of patients with clinical stage I squamous or adenocarcinoma of the cervix with a focus on T and B cell spatial location and organization. Despite early-stage disease, recurrence was common at 37%, highlighting the need to identify patients at high risk for recurrence. Results: We demonstrated that high CD8+ T cell infiltration correlated significantly with improved overall survival (OS), particularly in patients with adenocarcinoma histology. CD8+ T cells colocalized with B cells, suggesting the formation of a more sophisticated cellular neighborhood, i.e., TLS, which has prognostic benefit in other solid tumors. CXCL13, a chemokine associated with TLS formation, correlated with improved recurrence-free survival. The combination of high CXCL13 and lymphoid structures correlated with improved OS. However, most immune structures in cervical cancer were lymphoid aggregates (LAs) that lack features of more developed TLS, such as high endothelial venules (HEVs) and germinal centers (GCs), highlighting a lack of full immune activation in this microenvironment. Validation in The Cancer Genome Atlas (TCGA) cohort illustrated similar trends in survival. Conclusions: Collectively, this work demonstrates the prognostic significance of immune infiltration and eventual TLS induction in early cervical cancer and presents potential future therapeutic targets.