Cervicovaginal Virome: Associations with HPV, Bacterial Dysbiosis, and Cytological Abnormalities
Cervicovaginal viral community composition varies by HPV status and bacterial community type, with increasing oncogenic Alphapapillomavirus 9 clade representation across more abnormal cytological categories.
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Context
The cervicovaginal virome is poorly characterized in relation to HPV infection and local bacterial structure. This gap limits understanding of the cervical microenvironment across the spectrum of cytological normality.
What the study showed
Shotgun metagenomic sequencing of 311 specimens identified distinct viral compositions by HPV status and cytological category. Predicted phage functional profiles differed between NILM HPV-positive and HPV-negative women, with integrase, excisionase, and toxin-antitoxin annotations differentially represented after FDR correction. Lactobacillus crispatus-dominated communities enriched toxin-antitoxin annotations; Gardnerella vaginalis-dominated communities enriched anti-restriction annotations.
How it was done
Cross-sectional study using shotgun metagenomic sequencing of 311 cervicovaginal specimens from a Kazakhstani cohort, stratified into seven groups by HPV status and cervical cytology.
Risk of bias
Cross-sectional design precludes causal inference; functional profiles are computationally predicted, not experimentally validated; single-country cohort limits generalizability. Analysis based solely on the abstract.
What this study does NOT prove
The study does not prove that the virome causes or modifies the risk of cervical lesion progression, nor that microbiome-directed interventions alter outcomes.
In clinical practice
Findings are descriptive and exploratory. No clinical recommendations are supported by this study alone.
Limitations
Cross-sectional design precludes causal inference; functional profiles are computationally predicted, not experimentally validated; single-country cohort limits generalizability. Analysis based solely on the abstract.
Technical appendix
Version history
- 1.0 · 2026-11-05 — Auto-generated under Evidence Standard v1.0