This report provides demographic information, cytology findings, HPV genotype information, and histopathology for participants in the baseline phase of this trial and offers further evidence to support genotype-specific screening for cervical cancer and precancer. Clinical Trial Registry URL:https://clinicaltrials.gov/ct2/show/NCT01944722.
This study utilized extended genotyping to stratify ≥CIN3 and ≥CIN2 risk in women, ≥25 years, with NILM cytology. • HPV 16 and 31 carried the highest risk for ≥CIN3 and ≥CIN2. • Individual genotype reporting revealed risk strata associated with genotype groupings for ≥CIN3 and ≥CIN2. • Clinical management for risk-based screening is discussed in the context of extended genotyping results.
• HPV genotyping stratifies risk of ≥CIN2 or ≥CIN3 in women ≥21 years with ASC-US or LSIL cytology. • Women with HPV 16 had the greatest risk of ≥CIN2 or ≥CIN3 which is followed by those with HPV 31 in most instances. • HPV genotypes such as 51, 35/39/68, and 56/59/66 have a lower risk of ≥CIN2 or ≥CIN3 and may not require colposcopy. • These results support the use of HPV genotyping in risk-based management algorithms for women with either ASC-US or LSIL
Background: Amplified DNA probes provide powerful tools for the detection of infectious diseases, cancer, and genetic diseases. Commercially available amplification systems suffer from low throughput and require decontamination schemes, significant hands-on time, and specially trained laboratory staff. Our objective was to develop a DNA probe system to overcome these limitations.
Methods: We developed a DNA probe system, the BDProbeTecTMET, based on simultaneous strand displacement amplification and real-time fluorescence detection. The system uses sealed microwells to minimize the release of amplicons to the environment. To avoid the need for specially trained labor, the system uses a simple workflow with predispensed reagent devices; a programmable, expandable-spacing pipettor; and the 96-microwell format. Amplification and detection time was 1 h, with potential throughput up to 564 patient results per shift. We tested 122 total patient specimens obtained from a family practice clinic with the BD ProbeTecET and the Abbott LCx® amplified system for the detection of Chlamydia trachomatis and Neisseria gonorrhoeae.
Results: Based on reportable results, the BDProbeTecET results for both organisms were 100% sensitive and 100% specific relative to the LCx.
Conclusions: The BDProbeTecET is an easy-to-use, high-throughput, closed amplification system for the detection of nucleic acid from C.trachomatis and N.gonorrhoeae and other organisms.
Whereas HPV16 and HPV18 have been the focus in current risk‐based cervical cancer screening algorithms using HPV genotype information, mounting evidence suggests that oncogenic HPV types such as HPV31, 33, 52 and 58 pose a ≥CIN3 risk equivalent to or greater than that of HPV18, and the combined risk of HPV31 and HPV33 rivals even HPV16 in women above 30 years of age. Here, we evaluate the baseline risk of CIN2 and CIN3 by genotype in a colposcopy referral population from Denmark and Italy. In total, 655 women were enrolled upon a referral to colposcopy after a positive screening sample. All samples were HPV analyzed using Onclarity HPV assay with extended genotyping and combined with the histology outcomes, a Bayesian probability modeling was used to determine the risk per genotype assessed. The combined data for this referral population showed that the ≥CIN2 risk of HPV16 was 69.1%, HPV31 at 63.3%, HPV33/58 at 52.7%, HPV18 at 46.6% and HPV52 at 40.8%. For ≥CIN3, the risks were 44.3%, 38.5%, 36.8%, 30.9% and 16.8% for HPV16, HPV31, HPV18, HPV33/58 and HPV52, respectively, indicating that the baseline risk of disease arising from HPV16 is, not surprisingly, the highest among the oncogenic HPV genotypes. We find that the HPV genotype‐specific ≥CIN2 and ≥CIN3 risk‐patterns are so distinct that, for example, 35/39/68 and 56/59/66 should be considered only for low intensive follow‐up, thereby proposing active use of this information in triage strategies for screening HPV‐positive women.
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