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HPV ctDNA as a Biomarker for Monitoring Disease Progression in HPV16/18-Associated Cervical Cancer
Meejeong Kim1, Miseon Lee1, Jun Kang1
1Department of Pathology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
Introduction:
Cervical cancer, primarily driven by oncogenic HPV16/18, often relapses despite standard treatments. HPV circulating tumor DNA (ctDNA), which reflects tumor-derived genetic material in the bloodstream, has emerged as a promising noninvasive biomarker for monitoring disease progression.
Methods:
A prospective study was conducted on 20 patients with HPV16/18-associated cervical cancer. Posttreatment blood samples were collected, and HPV ctDNA levels were measured using droplet digital PCR. The correlation between HPV ctDNA levels and disease progression was examined.
Results:
HPV ctDNA was detected in 21% (18/85) of samples, with 6% (5/85) showing positivity. Patients without disease progression (n = 15) were HPV ctDNA negative, indicating a false positivity rate of zero. HPV ctDNA concentrations appeared higher in samples collected before or during disease progression, suggesting a potential association with disease status. Patients with positive HPV ctDNA tended to have shorter progression-free survival compared to those with negative ctDNA.
Conclusions:
This study suggests that HPV ctDNA may aid in monitoring disease progression in patients with HPV16/18-associated cervical cancer, highlighting the need for further validation.
