Cofactors in Human Papillomavirus Carcinogenesis

Area of Science:

• Oncology
• Epidemiology
• Virology

Background:

• Human papillomavirus (HPV) is the primary cause of cervical cancer (CC) and other HPV-related cancers.
• HPV infection alone is insufficient for malignant progression; co-factors play a crucial role.
• Understanding these co-factors is vital for risk stratification and developing preventive strategies beyond vaccination and screening.

Purpose of the Study:

• To review epidemiological and mechanistic evidence for key co-factors in HPV-driven carcinogenesis.
• To explore established and emerging co-factors influencing HPV persistence and disease progression.

Main Methods:

• Literature review of epidemiological and mechanistic studies.
• Analysis of established co-factors: tobacco smoking, immunosuppression (HIV), oral contraceptives, high parity, and other STIs.
• Exploration of emerging co-factors: cervical microbiome, nutrition, and host genetics.

Main Results:

• Established co-factors (smoking, HIV, OCs, parity, STIs) are consistently linked to increased risk of HPV persistence and progression.
• Emerging co-factors like cervical microbiome, diet, and host genetics may modulate immune responses and viral persistence.

Conclusions:

• Several co-factors significantly increase the risk of HPV persistence and progression to cancer.
• Further research into emerging co-factors may reveal new targets for comprehensive cancer prevention strategies.