Home-Based or Clinic-Based Human Papillomavirus (HPV) Screening

This randomized clinical trial studies home-based HPV or clinic-based Pap screening for cervical cancer. It is not yet known whether home-based screening is more effective, cost-effective, and/or acceptable than clinic-based screening for cervical cancer.

PRIMARY OBJECTIVES: I. Compare the sensitivity and specificity for cervical intraepithelial neoplasia (CIN) of two screening approaches: Novel approach: every 3 years high risk-human papillomavirus (HR-HPV) testing of (at home) self-collected samples with in-clinic cytology of HR-HPV positive women and referral to colposcopy of women with cytology > atypical squamous cells of uncertain significance (ASCUS); repeat HPV testing of HR-HPV positive but cytology negative women at one year; Currently recommended approach: for women < 30: every 3 years in-clinic cytology screening, with HPV based triage of women with ASCUS and referral to colposcopy of all women with squamous intraepithelial lesion (SIL) and/or HPV+ ASCUS; for women 30+, screening by Papanicolaou (Pap) and HPV, every 2-3 year (depending on previous history) with referral to colposcopy of those who are HPV 16/18+ or with cytology > ASCUS; retesting of those who are positive for other HR-HPV at one year. II. Compare these two approaches with respect to overall cost-effectiveness and acceptability. III. Determine the performance and cost-effectiveness of each approach in vaccinated and unvaccinated women < 30. OUTLINE: Participants are randomized to 1 of 2 arms. GROUP I (home-based HPV screening): Participants collect 2 vaginal specimens using polyester swabs. Participants with a positive HPV test result will have a Pap test. Participants with an abnormal Pap test will undergo standard of care as in Group II. GROUP II (clinic-based standard of care screening): Participants undergo Pap testing. Participants with a positive Pap test undergo standard of care, including colposcopy, HPV testing, cervical biopsy and/or endocervical curettage (ECC). Participants with cervical biopsies showing precancerous changes requiring treatment may undergo loop electrosurgical excision procedure (LEEP) or are referred to appropriate care.

Atypical Squamous Cell of Undetermined Significance, Cervical Carcinoma, Cervical Intraepithelial Neoplasia Grade 2/3, Health Status Unknown, Human Papillomavirus Infection, Low Grade Cervical Squamous Intraepithelial Neoplasia, Stage 0 Cervical Cancer

Cervical cancer, Atypical squamous cells of undetermined significance, Stage 0 cervical cancer, Cervical intraepithelial neoplasia grade 1, Cervical, intraepithelial neoplasia grade 2, Cervical intraepithelial neoplasia grade 3, Human papillomavirus, HPV

Participants collect 2 vaginal specimens using polyester swabs that are then placed in a specimen tube. Specimens are then submitted to the Harborview Medical Center clinical pathology lab. Participants with a positive HPV test result will have a Pap test. Participants with an abnormal Pap test will undergo standard of care as in Group II.

Participants undergo standard of care cervical cancer screening and follow-up. That is, participants undergo Pap testing. Participants with an abnormal Pap test undergo HPV testing, colposcopy, cervical biopsy and/or ECC. Participants with cervical biopsies showing precancerous changes are offered to undergo LEEP or are referred to appropriate care.

Cost-effectiveness in the standard approach in vaccinated and unvaccinated women less than 30 years old

The results from the trial (sensitivity, specificity, and costs) will be used in conjunction with a Markov model to determine cost per LY and cost per QALY. Model outcomes (per 100,000 screened) will include the expected numbers of false-positive test results, colposcopies, cases of CIN 1+, cases of cancer, cancer deaths, life expectancy and quality adjusted life-expectancy. Strategies will be compared using incremental cost-effectiveness ratios. Costs and outcomes will be discounted at 3% annually. One, 2-way and probabilistic sensitivity analyses conducted for all inputs to the models.

An intention-to-treat analysis, based upon the initial randomization, will be performed to evaluate differences between study arms (screening strategies). Estimates of sensitivity and specificity for detection of CIN 1+ will be calculated for the two screening strategies using standard methodologies.

An intention-to-treat analysis, based upon the initial randomization, will be performed to evaluate differences between study arms (screening strategies). Estimates of sensitivity and specificity for detection of CIN 1+ will be calculated for the two screening strategies using standard methodologies.

Estimates of sensitivity and specificity for detection of CIN 1+ will be calculated for the two screening strategies and the rate of disease in the 10% sample of test negative subjects in each arm will be extrapolated to the entire study group of test negative subjects in that arm when sensitivity and specificity estimates are calculated. Threshold analyses will also be conducted to identify the range for the cost of the home-based test due to inherent uncertainty

Estimates of sensitivity and specificity for detection of CIN 1 will be calculated for the two screening strategies and the rate of disease in the 10% sample of test negative subjects in each arm will be extrapolated to the entire study group of test negative subjects in that arm when sensitivity and specificity estimates are calculated. Threshold analyses will also be conducted to identify the range for the cost of the home-based test due to inherent uncertainty

Inclusion Criteria: Able to provide informed consent in English Exclusion Criteria: Have had hysterectomy Currently pregnant Received treatment of cervical dysplasia with LEEP, cone biopsy, laser procedure or cryotherapy within THREE years Received colposcopy of cervix within TWO years Received Pap test within ONE year Immunocompromised (positive human immunodeficiency virus [HIV] test, transplant recipient, received chemotherapy for cancer, or taking immunosuppressant drugs) Decisionally impaired adults requiring a legally authorized representative

Feder MA, Kulasingam SL, Kiviat NB, Mao C, Nelson EJ, Winer RL, Whitham HK, Lin J, Hawes SE. Correlates of Human Papillomavirus Vaccination and Association with HPV-16 and HPV-18 DNA Detection in Young Women. J Womens Health (Larchmt). 2019 Oct;28(10):1428-1435. doi: 10.1089/jwh.2018.7340. Epub 2019 Jul 2.

Mao C, Kulasingam SL, Whitham HK, Hawes SE, Lin J, Kiviat NB. Clinician and Patient Acceptability of Self-Collected Human Papillomavirus Testing for Cervical Cancer Screening. J Womens Health (Larchmt). 2017 Jun;26(6):609-615. doi: 10.1089/jwh.2016.5965. Epub 2017 Mar 23.