Pad - a new self-collection device for human papillomavirus

The feasibility of new HPV/DNA test as a primary cervical cancer screening method among 35- years- old ever-married women in Kalutara district; a cross-sectional study

Background

Cervical cancer is the second commonest female cancer in Sri Lanka. Two major drawbacks of the present cervical cancer screening programme are the suboptimal sensitivity of the pap smear and the low coverage. The objective of the study is to determine the feasibility of a new HPV/DNA test among 35 -years -old ever-married women in a district of Sri Lanka.

Method

A community based descriptive cross-sectional study was conducted from 1^stof July 2018 to 30th November 2018 in the public health divisions called Medical Officer of Health (MOH) areas of Kalutara district. The study population is comprised of ever-married women 35 years of age. Three women from each cluster (n = 413) were selected by consecutive sampling. A total of 918 women were recruited. HPV/DNA cervical specimen collection (n = 822) was carried out. Cervical specimens were tested by two cytoscreeners with the cobas 4800 PCR based screening machine. Clients’ perceptions and prevalence were assessed. The follow-up of women with positive HPV/DNA screening results was carried out. The operational and technical feasibility of the screening test were assessed. Data entry was done by using the statistical package IBM SPSS version 20.

Results

Overall response rate was 91.1% (n = 836). Clients’ perception was highly positive for HPV/DNA screening test procedure (99.9%, n = 821) and 99.6% (n = 819) of clients had mentioned that the HPV/DNA screening test is worthwhile to be incorporated into the National Cervical Cancer Screening program. The prevalence of HPV was 6.2% (95%CI: 6.18–6.22%). The coverage of the HPV/DNA screening was 89.5%(n = 822). Invalid results reported were 0.12% (n = 1). The percentage of HPV/DNA test positive women who underwent pap test within 3 months of the initial screening was 100% (n = 51), while the percentage of women who attempted to get a colposcopy within the 1 month of referral was 86.7% (n = 13).

Conclusions

HPV/DNA test implementation as a primary cervical cancer screening method is feasible among the 35- year age cohort of ever- married women in Kalutara district. It is necessary to further attempt alternative methods of cobas 4800 HPV/DNA test, which would be much suitable for resource-limited settings.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12889-021-10190-4.

Self-sampling for human papillomavirus DNA detection: a preliminary study of compliance and feasibility in BOLIVIA

BACKGROUND

Cervical cancer incidence and mortality rates in Bolivia are among the highest in Latin America. This investigation aims to evaluate the possibility of using simple devices, e.g. a cotton swab and a glass slide, for self-sampling in order to detect human papillomavirus (HPV) DNA by PCR in cervico-vaginal cells.

METHODS

In the first phase of our study we evaluated the use of a glass slide as a transport medium for cervical cells. A physician took paired-cervical samples from 235 women. One sample was transported in Easyfix® solution and the other sample was smeared over a glass slide. Both were further analyzed and compared for human DNA recovery and HPV detection. A kappa value was determined to evaluate the agreement between the HPV DNA detection rates. In the second phase of the study, 222 women from the urban, peri-urban and rural regions of Cochabamba were requested to perform self-sampling using the following devices: a cotton swab combined with a glass slide, and a vaginal tampon. Women gave their opinion about the self-sampling technique. Finally, the agreement for high risk-HPV detection between self- and physician-collected samples was performed in 201 samples in order to evaluate the self-sampling technique.

RESULTS

Firstly, the comparison between Easyfix® solution and the glass slide to transport clinical samples gave a good agreement for HPV DNA detection (κ = 0.71, 95% CI 0.60-0.81). Secondly, self-sampling, especially with cotton swab combined with glass slide, would generally be preferred over clinician sampling for a screening program based on HPV detection. Finally, we showed a good agreement between self- and physician collected samples for high risk-HPV detection (κ = 0.71, 95% CI 0.55-0.88).

CONCLUSIONS

Simple devices such as a cotton swab and a glass slide can be used to perform self-sampling and HPV DNA detection. Furthermore, most Bolivian women preferred self-sampling over clinician-sampling for cervical cancer screening.

Detection of high-risk human papillomavirus using menstrual blood in women with high-grade squamous intraepithelial lesions or high-risk human papillomavirus infections: A pilot study

AIM

Few studies have reported that human papillomavirus (HPV) tests using menstrual blood (MB) may be a convenient and effective screening modality for cervical cancer. Therefore, we aimed to investigate the efficacy of detecting high-risk (HR)-HPV from MB in women with high-grade squamous intraepithelial lesions or HR-HPV infections dependent on menstrual days.

MATERIALS AND METHODS

In this prospective exploratory pilot study, a clinical trial was conducted in 19 women. On enrollment into the study, gynecologists collected cervical cells. On the first and second day of menstruation, MB was self-collected by patients using a sanitary pad with a filter. The distribution of HPVs from MB and the accuracy of menstrual HR-HPV tests were evaluated using HPV genotyping. The agreement rate of detecting HR-HPVs using cervical and MB samples was also investigated.

RESULTS

The sensitivity, specificity, positive and negative predictive values of the MB HR-HPV test for detecting cervical intraepithelial neoplasia (CIN) 3 or worse were 87.5%, 45.5%, 53.8%, and 83.3%, respectively, during both menstrual cycle day (MCD) 1 and 2 and MCD 1 only; and 62.5%, 27.3%, 38.5%, and 50.0%, respectively, during MCD 2 only. For CIN 3 or worse, the agreement rate between positive cervical and MB HR-HPV test results was 87.5% during MCD 1 and 62.5% during MCD 2.

CONCLUSIONS

We demonstrated the possibility of using the MB HPV test as a screening modality for cervical cancer.