Exosomes as Emerging Non-Invasive Biomarkers of Cervical Cancer: A Systematic Review and Meta-Analysis

Area of Science:

• Oncology
• Biomarkers
• Molecular Biology

Background:

• Cervical cancer presents a substantial global health challenge.
• There is a critical need for improved diagnostic and prognostic tools.
• Extracellular vesicles (EVs) are being explored as potential non-invasive biomarkers.

Purpose of the Study:

• To systematically evaluate the diagnostic and prognostic accuracy of EV-based biomarkers for cervical cancer.
• To synthesize existing evidence through meta-analysis where appropriate.

Main Methods:

• A systematic review and meta-analysis following PRISMA guidelines.
• Searched major databases (PubMed, EMBASE, Web of Science) for relevant studies.
• Included 12 articles, with 6 eligible for meta-analysis of diagnostic data.

Main Results:

• Meta-analysis showed a high diagnostic accuracy for EVs in cervical cancer (AUC = 0.87).
• Non-coding RNAs were the primary diagnostic EV biomarkers identified.
• Prognostic data were heterogeneous, precluding quantitative synthesis, but suggested correlations with outcomes.

Conclusions:

• Extracellular vesicles show significant promise as diagnostic biomarkers for cervical cancer.
• The prognostic value of EVs for cervical cancer is currently inconclusive due to heterogeneity.
• Standardization of EV isolation and large prospective studies are essential for clinical validation.