Keimari Mendez1, Josefina Romaguera2, Ana P Ortiz3, Mariel López4, Martin Steinau5, Elizabeth R Unger5. 1. Department of Obstetrics and Gynecology, School of Medicine, University of Puerto Rico, San Juan, USA. Electronic address: keimari.mendez@upr.edu. 2. Department of Obstetrics and Gynecology, School of Medicine, University of Puerto Rico, San Juan, USA. 3. Department of Biostatistics and Epidemiology, Graduate School of Public Health, Cancer Control and Population Sciences Program at Comprehensive Cancer Center, University of Puerto Rico, San Juan, USA. 4. Puerto Rico Clinical and Translational Research Consortium, University of Puerto Rico, San Juan, USA. 5. Centers for Disease Control and Prevention, Atlanta, USA.
Abstract
OBJECTIVE: To test the hypothesis that self-collected urine could be used to detect high-risk human papillomavirus (HPV) DNA with sensitivity and specificity comparable to those of standard cervical testing. METHODS: Women attending a gynecology clinic for evaluation of abnormal cytology were recruited. Fifty-two participants (21-60years of age) collected urine samples, and clinicians collected cervical brush samples. When appropriate, cervical biopsies were obtained during colposcopy. HPV detection and typing were performed on DNA extracts from each sample, using commercial reagents for L1 consensus polymerase chain reaction (PCR) and type-specific hybridization. HPV 16 viral load was determined by quantitative PCR in HPV 16-positive samples. A diagnostic test analysis was conducted for urine samples. RESULTS: Fifty paired samples were analyzed, with 76% agreement between samples. The 12 discrepant pairs were all urine negative/cervix positive. The most common HPV types detected were 16, 51, 53, and 62. The urine test correctly identified 100% of the uninfected and 65% of the infected patients. CONCLUSION: The results indicate that HPV DNA detection using urine is less sensitive than cervical sampling in a population with abnormal cytology. Further exploration is warranted to determine clinical utility when other options are unavailable.
OBJECTIVE: To test the hypothesis that self-collected urine could be used to detect high-risk human papillomavirus (HPV) DNA with sensitivity and specificity comparable to those of standard cervical testing. METHODS:Women attending a gynecology clinic for evaluation of abnormal cytology were recruited. Fifty-two participants (21-60years of age) collected urine samples, and clinicians collected cervical brush samples. When appropriate, cervical biopsies were obtained during colposcopy. HPV detection and typing were performed on DNA extracts from each sample, using commercial reagents for L1 consensus polymerase chain reaction (PCR) and type-specific hybridization. HPV 16 viral load was determined by quantitative PCR in HPV 16-positive samples. A diagnostic test analysis was conducted for urine samples. RESULTS: Fifty paired samples were analyzed, with 76% agreement between samples. The 12 discrepant pairs were all urine negative/cervix positive. The most common HPV types detected were 16, 51, 53, and 62. The urine test correctly identified 100% of the uninfected and 65% of the infected patients. CONCLUSION: The results indicate that HPV DNA detection using urine is less sensitive than cervical sampling in a population with abnormal cytology. Further exploration is warranted to determine clinical utility when other options are unavailable.
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