Recurrent miscarriage and cervical human papillomavirus infection

Area of Science:

• Reproductive immunology
• Gynecologic oncology
• Infectious diseases

Background:

• Recurrent miscarriage (RM) affects a significant number of women, and its etiology remains largely unexplained.
• Human papillomavirus (HPV) is a common sexually transmitted infection with a well-established role in cervical cancer.
• The potential link between HPV infection and pregnancy outcomes, including RM, requires further investigation.

Purpose of the Study:

• To explore the association between cervical HPV infection and unexplained recurrent miscarriage.
• To determine if HPV prevalence differs between women with RM and controls.

Main Methods:

• A retrospective case-control study was conducted.
• 49 women with unexplained RM (cases) and 475 women with at least one term pregnancy (controls) were analyzed.
• Cervical HPV infection was assessed using Hybrid Capture II or PCR.

Main Results:

• HPV DNA tests were positive in 26.53% of RM women versus 61.89% of controls (P < 0.001).
• A significant difference in HPV prevalence was observed in the 30-39 age group.
• No significant differences were found in HPV types, cytology, or histology between the groups.

Conclusions:

• Women experiencing recurrent miscarriage exhibit a lower prevalence of HPV DNA positivity.
• This finding suggests that immune responses implicated in RM might confer a degree of protection against genital HPV infection.