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Cancer Prev Res (Phila). 2016 Dec;9(12):915-924. Epub 2016 Sep 26.

Molecular Triage of Premalignant Lesions in Liquid-Based Cervical Cytology and Circulating Cell-Free DNA from Urine, Using a Panel of Methylated Human Papilloma Virus and Host Genes.

Author information

  • 1Johns Hopkins University School of Medicine, Department of Otolaryngology, Baltimore, Maryland. rguerre3@jhmi.edu dsidrans@jhmi.edu.
  • 2University of Puerto Rico School of Medicine, Department of Obstetrics and Gynecology, San Juan, Puerto Rico.
  • 3Johns Hopkins University School of Medicine, Department of Otolaryngology, Baltimore, Maryland.
  • 4Johns Hopkins University School of Public Health, Department of Molecular Microbiology, Baltimore, Maryland.
  • 5Department of Gynecologic Oncology; University Medical Center Groningen; Groningen, The Netherlands.
  • 6The Institute for Cancer Care at Mercy, Department of Obstetrics and Gynecology, Baltimore, Maryland.
  • 7University of Puerto Rico School of Medicine, Department of Biochemistry, San Juan, Puerto Rico.
  • 8Johns Hopkins School of Medicine, Brady Urological Institute, Baltimore, Maryland.
  • 9Johns Hopkins School of Medicine, McKusick-Nathans Institute of Genetic Medicine, Baltimore, Maryland.

Abstract

Clinically useful molecular tools to triage women for a biopsy upon referral to colposcopy are not available. We aimed to develop a molecular panel to detect cervical intraepithelial neoplasia (CIN) grade 2 or higher lesions (CIN2+) in women with abnormal cervical cytology and high-risk HPV (HPV+). We tested a biomarker panel in cervical epithelium DNA obtained from 211 women evaluated in a cervical cancer clinic in Chile from 2006 to 2008. Results were verified in a prospective cohort of 107 women evaluated in a high-risk clinic in Puerto Rico from 2013 to 2015. Promoter methylation of ZNF516, FKBP6, and INTS1 discriminated cervical brush samples with CIN2+ lesions from samples with no intraepithelial lesions or malignancy (NILM) with 90% sensitivity, 88.9% specificity, 0.94 area under the curve (AUC), 93.1% positive predictive value (PPV), and 84.2% negative predictive value (NPV). The panel results were verified in liquid-based cervical cytology samples from an independent cohort with 90.9% sensitivity, 60.9% specificity, 0.90 AUC, 52.6% PPV, and 93.3% NPV, after adding HPV16-L1 methylation to the panel. Next-generation sequencing results in HPV+ cultured cells, and urine circulating cell-free DNA (ccfDNA) were used to design assays that show clinical feasibility in a subset (n = 40) of paired plasma (AUC = 0.81) and urine (AUC = 0.86) ccfDNA samples obtained from the prospective cohort. Viral and host DNA methylation panels can be tested in liquid cytology and urine ccfDNA from women referred to colposcopy, to triage CIN2+ lesions for biopsy and inform personalized screening algorithms. Cancer Prev Res; 9(12); 915-24. ©2016 AACR.

PMID:
27671338
DOI:
10.1158/1940-6207.CAPR-16-0138
[PubMed - in process]
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