Minimally invasive diagnosis of precancerous cervical lesions using single-cell peripheral immune atlas.

Cervical cancer remains a major global health concern for women. Current screening methods are either invasive or lead to low participation and over-referral for colposcopy, particularly among high-risk human papillomavirus (HPV)-positive women. This study analyzes 613 participants with varying cervical lesions using mass cytometry by time-of-flight (CyTOF) to identify disease-specific peripheral immune signatures. A diagnostic model based on 23 immune features achieves ∼91% sensitivity and specificity for detecting precancerous and cancerous lesions. A separate model for HPV-positive women shows even higher accuracy (∼93% sensitivity, ∼95% specificity), especially in HPV16/18-positive cases (99% sensitivity, 100% specificity). In an independent validation cohort (n = 105), the model distinguishes cervical intraepithelial neoplasia (CIN) 2+ from ≤CIN1 with 86.5% sensitivity and 85.3% specificity (area under the curve [AUC] = 0.89). These findings support peripheral immune profiling as a minimally invasive and accurate biomarker strategy for early cervical cancer screening, particularly in HPV16/18-positive women.