Urine-based human papillomavirus DNA testing as a screening tool for cervical cancer in high-risk women.

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.