ABSTRACT
The risk of progression of low-grade (CIN1) to high-grade cervical intraepithelial neoplasia (CIN2/3) is 3-5 times higher for women living with HIV (WLHIV) than for HIV-negative women. Evidence suggests that the current cervical cancer screening methods perform less effectively in WLHIV. An emerging screening method-p16/Ki-67 dual staining technology (DUST) is a safe and rapid assay that could be used to detect CIN2/3 with higher sensitivity and specificity. The study in this protocol will evaluate the performance of DUST in cervical cancer screening among WLHIV. We will conduct an intra-participant comparative study (Phase 1) to enrol n = 1,123 sexually active WLHIV aged 25-65 years at two accredited adult HIV treatment centres in Lagos, Nigeria to compare the performance of DUST to the currently used screening methods (Pap smear, hr-HPV DNA, or VIA testing) in detecting high-grade CIN and cancer (CIN2+). Subsequently, a prospective cohort study (Phase 2) will be conducted by enrolling all the WLHIV who are diagnosed as having low-grade CIN (CIN1) in Phase 1 for a 6-monthly follow-up for 2 years to detect the persistence and progression of CIN1 to CIN2+. The findings of this study may provide evidence of the existence of a better performance screening method for the primary and triage detection of CIN2+ in WLHIV. It may also demonstrate that this high-performance test can improve the long-term predictive accuracy of screening by extending the intervals between evaluations and thus decrease the overall cost and increase screening uptake and follow-up compliance in WLHIV.
Subject(s)
HIV Infections , Papillomavirus Infections , Uterine Cervical Dysplasia , Uterine Cervical Neoplasms , Adult , Female , Humans , Cyclin-Dependent Kinase Inhibitor p16 , Dust , Early Detection of Cancer/methods , HIV Infections/complications , Ki-67 Antigen , Nigeria , Papillomaviridae , Papillomavirus Infections/complications , Papillomavirus Infections/diagnosis , Prospective Studies , Staining and Labeling , Uterine Cervical Neoplasms/diagnosisABSTRACT
Cervical cancer is a leading cause of cancer death for women in low-resource settings. The World Health Organization recommends that cervical cancer screening programs incorporate HPV DNA testing, but available tests are expensive, require laboratory infrastructure, and cannot be performed at the point-of-care. We developed a two-dimensional paper network (2DPN), hybrid-capture, signal amplification assay and a point-of-care sample preparation protocol to detect high-risk HPV DNA from exfoliated cervical cells within an hour. The test does not require expensive equipment and has an estimated cost of <$3 per test without the need for batching. We evaluated performance of the paper HPV DNA assay with short synthetic and genomic HPV DNA targets, HPV positive and negative cellular samples, and two sets of clinical samples. The first set of clinical samples consisted of 16 biobanked, provider-collected cervical samples from a study in El Salvador previously tested with careHPV and subsequently tested in a controlled laboratory environment. The paper HPV DNA test correctly identified eight of eight HPV-negative clinical samples and seven of eight HPV-positive clinical samples. We then performed a field evaluation of the paper HPV DNA test in a hospital laboratory in Mozambique. Cellular controls generated expected results throughout field testing with fully lyophilized sample preparation and 2DPN reagents. When evaluated with 16 residual self-collected cervicovaginal samples previously tested by the GeneXpert HPV assay ("Xpert"), the accuracy of the HPV DNA paper test in the field was reduced compared to testing in the controlled laboratory environment, with positive results obtained for all eight HPV-positive samples as well as seven of eight HPV-negative samples. Further evaluation showed reduction in performance was likely due in part to increased concentration of exfoliated cells in the self-collected clinical samples from Mozambique compared with provider-collected samples from El Salvador. Finally, a formal usability assessment was conducted with users in El Salvador and Mozambique; the assay was rated as acceptable to perform after minimal training. With additional optimization for higher cell concentrations and inclusion of an internal cellular control, the paper HPV DNA assay offers promise as a low-cost, point-of-care cervical cancer screening test in low-resource settings.
Subject(s)
Papillomavirus Infections , Uterine Cervical Neoplasms , Female , Humans , Uterine Cervical Neoplasms/diagnosis , Uterine Cervical Neoplasms/prevention & control , Papillomavirus Infections/diagnosis , Early Detection of Cancer/methods , User-Computer Interface , Papillomaviridae/genetics , DNAABSTRACT
OBJECTIVE: Epidemiology and evaluation of the importance of surgical margins in the treatment of vulvar H-SIL - analysis of own data. MATERIAL AND METHODS: The prospective study included women dia-gnosed with HPV-associated vulvar epithelial neoplasia from 10/2016 to 1/2022. A total of 65 women were included. After surgical treatment, the women were distributed to groups according to surgical margins and were followed-up at regular intervals. RESULTS: Seventeen women (26%) dia-gnosed with HPV-associated vulvar intraepithelial neoplasia were under 49 years, whereas 48 women (74%) were older than 49 years. Recurrence rates of HPV-associated precancers were 12.3%, 1.5% and 3.1% in excisions with positive margins up to 1mm peripheral margins and 1-3mm peripheral margins, respectively. The risk of recurrence when the lesion reaches the margin is statistically significant, compared to a healthy margin of 1-3mm. CONCLUSION: Keeping the minimal healthy margin (1-3mm) seems to be an acceptable risk of recurrence of HPV-associated vulvar intraepithelial neoplasia with positive cosmetic effect and minimal risk of disturbing the psychosexual functions of women. Long-term regular follow-up is necessary.
Subject(s)
Carcinoma in Situ , Papillomavirus Infections , Vulvar Neoplasms , Female , Humans , Margins of Excision , Prospective Studies , Vulva/pathology , Vulvar Neoplasms/surgery , Vulvar Neoplasms/pathology , Carcinoma in Situ/surgery , Carcinoma in Situ/pathology , PapillomaviridaeABSTRACT
BACKGROUND: Cervical cancer is one of the most common cancers in women and could be prevented by human papilloma virus (HPV) vaccination. Cervarix, the first available HPV vaccine, has been widely administrated to Chinese women, while little was known about its effect on the prevention and control for HPV related diseases in China. The study aims to assess the impact of Cervarix on HPV infection and cervical related diseases in real world. METHODS: This is a prospective, multi-age birth cohort study to investigate the incidence and continuous status of HPV infection, and relevant cervical diseases by exposure status (with Cervarix vaccination history or without any HPV vaccination history). It is planned to recruit 12,118 eligible women at age of 9 to 45 years from vaccination clinics or hospital outpatient clinics, and then follow up them for three years. The standard questionnaire will be used to collect information such as demographic characteristics, menstruation and obstetrical histories, history of sexual behavior, personal behavior history, history of disease and pathogen infection, medication history, and family history at baseline. After three years, the changes of these behaviors will be investigated again, and other related health status information will be retrieved from the electronic health records during the follow-up period. If available physically and legally, the cervical cancer screening will be performed, including type-specific HPV deoxyribonucleic acid (DNA) polymerase chain reaction (PCR) testing and contingent thinprep cytologic test (TCT) and colposcopy. The free cervical cancer screening will be captured and uploaded timely to the Yinzhou Regional Health Information Platform (YRHIP); therefore, the long-term outcomes of participants will be monitored. DISCUSSION: This prospective cohort study will assess the impact of HPV vaccine on HPV infection and related cervical diseases in women aged 9-45 years, which makes up for the lack of evidence in Chinese women. The results of this study will provide support for understanding the impact of HPV vaccination in China, and make a contribution to increasing HPV vaccination and cervical cancer screening coverage in China. TRIAL REGISTRATION: This study has been retrospectively registered on clinicaltrials.gov (NCT05341284) on April 22, 2022.
Subject(s)
Papillomavirus Infections , Papillomavirus Vaccines , Uterine Cervical Neoplasms , Adolescent , Adult , Child , Female , Humans , Middle Aged , Young Adult , Cohort Studies , Cost of Illness , Early Detection of Cancer , Papillomaviridae , Papillomavirus Infections/epidemiology , Papillomavirus Infections/prevention & control , Papillomavirus Vaccines/therapeutic use , Prospective Studies , Uterine Cervical Neoplasms/epidemiology , Uterine Cervical Neoplasms/prevention & control , Vaccination/methodsABSTRACT
OBJECTIVES: Human papillomavirus is one of the most important causes of cervical cancer. Participating in an HPV test and receiving an HPV diagnosis can create questions about the needs and preferences. The present systematic review was conducted to determine the reproductive health needs of women with HPV. METHODS: We searched PubMed, Scopus, Web of Science, Google Scholar and Magiran, SID and Iranmedex. Without language restrictions and time constraints. We also searched the grey literature and carried out forward/backward citation searches. RESULTS: In the first, 1056 articles were retrieved, and, after removing them, 13 articles published were entered. The studies were qualitative (N = 9), quantitative (N = 3), and one was unclear. Most qualitative studies collected data using individual interviews (N = 7), two qualitative studies, narratives of HPV patients from a website of patient experiences and questions. Women wanted further information on different HPV viral types, transmission, implications for sexual partners, prevalence, latency and regression of HPV, their management options and the implications of infection for cancer risk and fertility. Women's experience of searching the Internet for further information about HPV was reported as difficult, anxiety provoking and contributing to the stigma of the infection because information was often located in the context of other sexually transmitted infections, with multiple sexual partners highlighted as a risk factor for infection. CONCLUSION: Surveys showed that the majority of women had unanswered questions about their HPV test results. The information that women thought was helpful in interpreting their test results included having a high-risk type of HPV, and cancer survival statistics for the virus. Women also needed information about sexual transmission, how HPV tested positive in a long-term relationship, and the potential consequences for their partners and the risk of re-infection. Younger women had questions about whether HPV could affect fertility.
Subject(s)
Alphapapillomavirus , Papillomavirus Infections , Uterine Cervical Neoplasms , Female , Humans , Papillomaviridae , Reproductive Health , Uterine Cervical Neoplasms/diagnosisABSTRACT
The World Health Organization (WHO) global strategy to eliminate cervical cancer (CxCa) could result in >62 million lives saved by 2120 if strategy targets are reached and maintained: 90% of adolescent girls receiving prophylactic human papillomavirus (HPV) vaccine, 70% of women receiving twice-lifetime cervical cancer screening, and 90% of cervical pre-cancer lesions and invasive CxCa treated. However, the cost and complexity of CxCa screening and treatment approaches has hampered scale-up, particularly in low- and middle-income countries (LMICs), and new approaches are needed. Therapeutic HPV vaccines (TxV), which could clear persistent high-risk HPV infection and/or cause regression of pre-cancerous lesions, are in early clinical development and might offer one such approach. During October 2021 to March 2022, WHO, in collaboration with the Bill and Melinda Gates Foundation, convened a series of global expert consultations to lay the groundwork for understanding the potential value of TxV in the context of current CxCa prevention efforts and for defining WHO preferred product characteristics (PPCs) for TxV. WHO PPCs describe preferences for vaccine attributes that would help optimize vaccine value and use in meeting the global public health need. This paper reports on the main discussion points and findings from the expert consultations. Experts identified several ways in which TxV might address challenges in current CxCa prevention programmes, but emphasized that the potential value of TxV will depend on their degree of efficacy and how quickly they can be developed and implemented relative to ongoing scale-up of existing interventions. Consultation participants also discussed potential use-cases for TxV, important PPC considerations (e.g., vaccine indications, target populations, and delivery strategies), and critical modelling needs for predicting TxV impact and cost-effectiveness.
Subject(s)
Alphapapillomavirus , Papillomavirus Infections , Papillomavirus Vaccines , Uterine Cervical Neoplasms , Adolescent , Early Detection of Cancer , Female , Humans , Papillomaviridae , Papillomavirus Infections/prevention & control , Papillomavirus Vaccines/therapeutic use , Public Health , Referral and Consultation , Uterine Cervical Neoplasms/diagnosis , World Health OrganizationABSTRACT
BACKGROUND: We sought to identify the absolute risk of specific HPV genotype for cervical intraepithelial neoplasia grade 2/3 or worse (CIN2+/3+) and to develop a risk-based management strategy in an HPV-positive population. METHODS: HPV genotyping was performed based on a 3-year cervical cancer screening cohort. The study endpoints were histologic CIN2+/3+. The prevalence of specific HPV genotype was calculated by minimum, any type, and hierarchical attribution estimate. The absolute CIN2+/3+ risks of specific HPV genotype were estimated and risk-based management strategy was established according to the American Society for Colposcopy and Cervical Pathology guideline. The efficacy of conventional and risk-based management strategies for non-16/18 HPVs were further evaluated. RESULTS: Eligible data were available for 8,370 women with a median age of 48 years (interquartile range, 42-53 years). At baseline, there were 1,062 women with HPV-positive disease, including 424 with multiple and 639 with single infections. CIN2+/3+ cases represented 113/74, 23/8, 20/7, and 52/31 patients at baseline and first-, second-, and third-year visits, respectively. Women with multiple HPV infections at baseline were more prone to persistent infection than those with single infection (P<.0001). HPV16 and HPV52 were the top 2 ranking among baseline and 3-year cumulative CIN2+/3+ cases. Based on the absolute risk of specific HPV genotype combined with cytology for CIN2+/3+, all non-16/18 HPVs were divided into 4 risk-stratified groups. Compared with conventional strategy, the risk-based strategy had higher specificity (P=.0000) and positive predictive value (P=.0322) to detect CIN3+ and needed fewer colposcopies for each CIN3+ case. CONCLUSIONS: Based on our study findings, we propose a new extended HPV genotyping protocol, which would provide a better strategy for achieving precise risk-based management of HPV-positive populations.
Subject(s)
Papillomavirus Infections , Uterine Cervical Dysplasia , Uterine Cervical Neoplasms , Adult , Cohort Studies , Early Detection of Cancer/methods , Female , Genotype , Humans , Middle Aged , Papillomaviridae/genetics , Papillomavirus Infections/complications , Papillomavirus Infections/diagnosis , Papillomavirus Infections/epidemiology , Risk Assessment , Uterine Cervical Neoplasms/diagnosis , Uterine Cervical Neoplasms/epidemiology , Uterine Cervical Neoplasms/pathology , Uterine Cervical Dysplasia/diagnosis , Uterine Cervical Dysplasia/epidemiology , Uterine Cervical Dysplasia/pathologyABSTRACT
BACKGROUND: Human papilloma virus (HPV) causes multiple anogenital diseases including cervical cancer and is the most common sexually transmitted infection. Healthcare resource utilization (HRU) associated with HPV-related anogenital diseases includes diagnostic and disease specific treatment regimens. A recent study showed disease burden of young women aged 23-25 years, who were the first populations eligible to receive HPV vaccination after its introduction in Germany. Cost for the German statutory health insurance (SHI) due to HPVrelated anogenital diseases in this population are unknown. This study aimed at assessing HRU and costs related to HPV-associated anogenital diseases for the Germany SHI. METHODS: We used a retrospective, matched cohort design to leverage the prior identified cohort of 23-25-year-old women born between 1989-1992 diagnosed with HPV-related anogenital disease from the Institute for Applied Health Research Berlin (InGef) Research Database. German SHI claims data from 2012-2017 were analyzed. The prior identified cases were matched (direct, without replacement) to women without anogenital diseases (1:10 ratio). HRU and costs for inpatient care, outpatient care, and pharmaceutical during a 3-year observation period were determined for both cases and controls and increments between the groups were assessed. RESULTS: 2,972 women diagnosed with anogenital diseases (cases) who were matched to 29,720 women without anogenital diseases (controls). Cases had more outpatient visits (52.4 visits vs. 39.2 visits) and more cases (45.2% vs. 31.7%) were hospitalized at least once in the 3year observation period. Most common outpatient procedures performed in cases were conization of the cervix uteri (4.4% cases; n < 5 controls), followed by other excision and destruction of diseased tissue of the cervix uteri (3.1% in cases; 0.0% in controls). Median difference in total healthcare costs of 684 (mean difference: 1,089, 95%CI: 752-1,426) suggest that HPV-related anogenital diseases were responsible for approximately 3.2 Million more healthcare costs for the identified cases in the four birth cohorts within the 3year observation period in the InGef Research Database. Costs were mainly driven by outpatient care (41.6% of total costs). CONCLUSION: In Germany, HPV-related anogenital diseases among young women are associated with considerable HRU and financial expenditures, mostly driven by outpatient care.
Subject(s)
Alphapapillomavirus , Papillomavirus Infections , Adult , Delivery of Health Care , Female , Germany/epidemiology , Health Care Costs , Humans , Insurance, Health , Papillomaviridae , Papillomavirus Infections/epidemiology , Papillomavirus Infections/therapy , Retrospective Studies , Young AdultABSTRACT
OBJECTIVE: To examine temporal trends in cervical cancer screening practices and associated downstream abnormalities and procedures. METHODS: Women aged 18-64 years with commercial insurance or Medicaid insurance from 2008 to 2019 were identified using the IBM MarketScan databases. The annual rates of screening overall and by type of test (cytology, co-testing, or primary human papillomavirus testing) were examined. Downstream abnormal cytologic and histologic test results, colposcopies, and excisional procedures were examined, and rates were reported for the population of eligible patients with continuous insurance and for those who underwent screening. Changes over time in testing and outcomes were compared using χ2 tests and Spearman's correlation. RESULTS: From 2008 to 2019, the annual screening prevalence decreased from 42.6% to 29.4% in women with commercial insurance (P<.001) and from 27.9% to 12.4% among women with Medicaid insurance (P<.001). In the cohort of women with commercial insurance, cytology usage decreased from 79.4% to 38.9% and co-testing increased from 20.1% to 59.6% (P<.001). Per 1,000 women screened, the rate of abnormal histologic and cytologic test results rose from 96 to 119 (P<.001) and colposcopies rose from 33 to 42 (P<.001); excisional procedures remained relatively constant. Per 1,000 eligible women, the rate of abnormal histologic and cytologic test results decreased from 41 to 35 (P<.001), colposcopies declined from 14 to 12, and excisional procedures decreased from 3 to 2. CONCLUSION: Human papillomavirus testing has been rapidly incorporated into cervical cancer screening and is associated with an increasing trend of downstream abnormalities and procedures among screened women but a declining trend at the population level.
Subject(s)
Insurance , Papillomavirus Infections , Uterine Cervical Neoplasms , Colposcopy , Early Detection of Cancer/methods , Female , Humans , Mass Screening/methods , Papillomaviridae , Papillomavirus Infections/complications , Papillomavirus Infections/diagnosis , Papillomavirus Infections/epidemiology , Pregnancy , United States , Uterine Cervical Neoplasms/pathologyABSTRACT
OBJECTIVE: Population screening programmes must make good use of resources for the health system and users. To evaluate impacts of the type of diagnostic test in the new French cervical screening programme, an messenger ribonucleic acid (mRNA) high-risk human papillomavirus assay was compared to a deoxyribonucleic acid (DNA) high-risk human papillomavirus assay for a hypothetical cohort of women aged 25 to 65 years. PERSPECTIVE: This evaluation takes the perspective of the French healthcare system. SETTING: France. METHODS: A decision tree model reflecting the French cervical screening algorithms was parametrised using French cost and population data and the Danish Horizon study. The outcomes were total costs, and number of colposcopies, HPV tests and cytology tests for the cohort. One-way and probabilistic sensitivity analyses and scenarios analyses were conducted to test the robustness of results to parameter and structural uncertainty. RESULTS: Adopting an mRNA versus DNA assay as part of national cervical screening in France is estimated to save 6.5 million (95% credibility intervals -1.3 - 13.5 million) and prevent 47,795 (95% credibility intervals 35,309 - 60,139) unnecessary colposcopies, 38,666 unnecessary HPV tests and 121,670 cytology tests over two years for a cohort of 2,168,806 million women aged 25 to 65 years. Sensitivity analyses indicated robust results across a range of inputs. CONCLUSION: The choice of high-risk human papillomavirus assay makes a significant difference to resource use and costs and is important to consider when implementing cervical screening in France. Using an mRNA versus DNA assay can result in cost savings and reductions in unnecessary testing and procedures, which in turn benefits women and the health care system.
Subject(s)
Alphapapillomavirus , Papillomavirus Infections , Uterine Cervical Dysplasia , Uterine Cervical Neoplasms , Alphapapillomavirus/genetics , Cost-Benefit Analysis , DNA , Early Detection of Cancer/methods , Female , Humans , Mass Screening/methods , Papillomaviridae/genetics , Papillomavirus Infections/epidemiology , RNA, Messenger/genetics , Uterine Cervical Neoplasms/diagnosis , Uterine Cervical Neoplasms/prevention & controlABSTRACT
Objective: We assessed whether general practitioner (GP) delivery of a vaginal self-sampling kit was non-inferior to home-mailed delivery on cervical cancer screening (CCS) participation. Methods: Two hundred and ten French GPs from Indre-et-Loire French department were randomized into two groups, and their unscreened women patients aged 30-65 were included in February-March 2015. In the GP delivery group (n = 105 GPs; 1,806 women), women were sent a reminder letter inviting them to collect a vaginal self-sampling kit at their regular GP's practice. In the home-mailed delivery group (n = 105 GPs; 1,806 women), women were sent a reminder letter with a vaginal self-sampling kit directly at home. The primary outcome was participation in complete CCS within 9 months. A cost-effectiveness analysis was also performed. Results: At 9 months, 14.9% (95% CI: 12.9-16.9) and 27.9% (95% CI: 25.7-30.0) of women in the GP and home-mailed delivery groups participated in complete CCS. The absolute between-group difference was -13.0 percentage points (95% CI: -15.9 to -10.0) in favor of the home-mailed delivery group, crossing the non-inferiority pre-defined non-inferiority margin of 5%. The home-mailed delivery strategy cost 50.81 more per additional woman screened. Conclusions: The GP delivery was inferior to home-mailed delivery in increasing participation in CCS. Home-mailed delivery of a vaginal self-sampling kit is a cost-effective way to increase CCS in that the additional cost of this strategy seems acceptable. This study is registered at www.Clinicaltrials.gov NCT02255084.
Subject(s)
General Practitioners , Papillomavirus Infections , Uterine Cervical Neoplasms , Female , Humans , Uterine Cervical Neoplasms/diagnosis , Uterine Cervical Neoplasms/prevention & control , Early Detection of Cancer , Cost-Benefit Analysis , Papillomaviridae , Papillomavirus Infections/diagnosis , Specimen Handling , Mass Screening , Vaginal SmearsABSTRACT
BACKGROUND: High-risk human papillomavirus (hrHPV) testing has been recommended by the World Health Organization as the primary screening test in cervical screening programs. The option of self-sampling for this screening method can potentially increase women's participation. Designing screening programs to implement this method among underscreened populations will require contextualized evidence. METHODS: PREvention and SCReening Innovation Project Toward Elimination of Cervical Cancer (PRESCRIP-TEC) will use a multi-method approach to investigate the feasibility of implementing a cervical cancer screening strategy with hrHPV self-testing as the primary screening test in Bangladesh, India, Slovak Republic and Uganda. The primary outcomes of study include uptake and coverage of the screening program and adherence to follow-up. These outcomes will be evaluated through a pre-post quasi-experimental study design. Secondary objectives of the study include the analysis of client-related factors and health system factors related to cervical cancer screening, a validation study of an artificial intelligence decision support system and an economic evaluation of the screening strategy. DISCUSSION: PRESCRIP-TEC aims to provide evidence regarding hrHPV self-testing and the World Health Organization's recommendations for cervical cancer screening in a variety of settings, targeting vulnerable groups. The main quantitative findings of the project related to the impact on uptake and coverage of screening will be complemented by qualitative analyses of various determinants of successful implementation of screening. The study will also provide decision-makers with insights into economic aspects of implementing hrHPV self-testing, as well as evaluate the feasibility of using artificial intelligence for task-shifting in visual inspection with acetic acid. TRIAL REGISTRATION: ClinicalTrials.gov, NCT05234112 . Registered 10 February 2022.
Subject(s)
Papillomavirus Infections , Uterine Cervical Neoplasms , Artificial Intelligence , Early Detection of Cancer/methods , Feasibility Studies , Female , Humans , Mass Screening/methods , Papillomaviridae , Papillomavirus Infections/diagnosis , Papillomavirus Infections/prevention & control , Uterine Cervical Neoplasms/diagnosis , Uterine Cervical Neoplasms/prevention & control , World Health OrganizationABSTRACT
Accelerated cervical cancer control will require widespread human papillomavirus (HPV) vaccination and screening. For screening, sensitive HPV testing with an option of self-collection is increasingly desirable. HPV typing predicts risk of precancer/cancer, which could be useful in management, but most current typing assays are expensive and/or complicated. An existing 15-type isothermal amplification assay (AmpFire, Atila Biosystems, USA) was redesigned as a 13-type assay (ScreenFire) for public health use. The redesigned assay groups HPV types into four channels with differential cervical cancer risk: (a) HPV16, (b) HPV18/45, (c) HPV31/33/35/52/58 and (d) HPV39/51/56/59/68. Since the assay will be most useful in resource-limited settings, we chose a stratified random sample of 453 provider-collected samples from a population-based screening study in rural Nigeria that had been initially tested with MY09-MY11-based PCR with oligonucleotide hybridization genotyping. Frozen residual specimens were masked and retested at Atila Biosystems. Agreement on positivity between ScreenFire and prior PCR testing was very high for each of the channels. When we simulated intended use, that is, a hierarchical result in order of clinical importance of the type groups (HPV16 > 18/45 > 31/33/35/52/58 > 39/51/56/59/68), the weighted kappa for ScreenFire vs PCR was 0.90 (95% CI: 0.86-0.93). The ScreenFire assay is mobile, relatively simple, rapid (results within 20-60 minutes) and agrees well with reference testing particularly for the HPV types of greatest carcinogenic risk. If confirmed, ScreenFire or similar isothermal amplification assays could be useful as part of risk-based screening and management.
Subject(s)
Papillomavirus Infections , Uterine Cervical Neoplasms , Cervix Uteri , DNA, Viral/analysis , DNA, Viral/genetics , Early Detection of Cancer/methods , Female , Genotype , Human papillomavirus 16/genetics , Humans , Papillomaviridae/geneticsABSTRACT
The clinical behaviour and outcomes of patients with oropharyngeal cancer (OPC) may be dichotomised according to their association with human papilloma virus (HPV) infection. Patients with HPV-associated disease (HPV+OPC) have a distinct demographic profile, clinical phenotype and demonstrate considerably better responses to chemoradiotherapy. This has led to a reappraisal of staging and treatment strategies for HPV+OPC, which are underpinned by radiological data. Structural modalities, such as CT and MRI can provide accurate staging information. These can be combined with ultrasound-guided tissue sampling and functional techniques (such as diffusion-weighted MRI and 18F-fludeoxyglucose positron emission tomography-CT) to monitor response to treatment, derive prognostic information, and to identify individuals who might benefit from intensification or deintensification strategies. Furthermore, advanced MRI techniques, such as intravoxel incoherent motion and perfusion MRI as well as application of artificial intelligence and radiomic techniques, have shown promise in treatment response monitoring and prognostication. The following review will consider the contemporary role and knowledge on imaging in HPV+OPC.
Subject(s)
Alphapapillomavirus , Head and Neck Neoplasms , Oropharyngeal Neoplasms , Papillomavirus Infections , Artificial Intelligence , Humans , Oropharyngeal Neoplasms/diagnostic imaging , Oropharyngeal Neoplasms/pathology , Oropharyngeal Neoplasms/therapy , Papillomaviridae , Papillomavirus Infections/complications , Papillomavirus Infections/diagnostic imaging , Prognosis , Squamous Cell Carcinoma of Head and Neck , Tomography, X-Ray ComputedABSTRACT
Introducción. La detección del virus del papiloma humano mediante la combinación de la prueba de HPV y otras técnicas como la citología, ha demostrado su eficacia en el diagnóstico y tratamiento oportuno de lesiones asociadas con el cáncer de cuello uterino. Objetivo. Estimar el impacto presupuestal de la estrategia de detección temprana del HPV mediante la prueba de genotipificación combinada con la citología en comparación con la citología convencional, en mujeres de 30 a 65 años participantes en el programa de tamizaje de cáncer de cuello uterino en una Entidad Administradora del Plan de Beneficios en salud (EAPB) en Colombia. Materiales y métodos. Utilizando un árbol de decisiones y un modelo de Markov, se estimaron las implicaciones clínicas y los costos directos anuales de dos ciclos de tamizaje, diagnóstico y tratamiento, en una cohorte de mujeres. Las prevalencias de los resultados clínicos y los costos se tomaron de la base de datos de una EAPB y la información de la progresión, persistencia y regresión de los estados de salud provinieron del estudio ATHENA. Resultados. El esquema de tamizaje con la prueba de HPV, la genotipificación y la citología resultó en un ahorro de costos comparado con la citología convencional. El costo promedio por ciclo de tamizaje con la prueba de HPV se estimó en COP $129'201.363 y con la citología en COP $186'309.952, es decir, un ahorro de COP $57'108.589 (30,7 %). Conclusión. La implementación de la estrategia de tamizaje evaluada sugiere que habría ahorros derivados de la detección temprana de los estados de salud asociados con el desarrollo de cáncer de cuello uterino.
Introduction: The detection of the human papillomavirus (HPV) through the combination of the HPV test and other techniques such as cytology has impacted the detection and timely treatment of lesions associated with cervical cancer. Objective: To estimate the budgetary impact of the strategy of early detection of HPV with DNA test genotyping with reflex cytology versus conventional cytology in women aged 30 to 65 years attending the cervical cancer screening program at a health benefit managing entity in Colombia. Materials and methods: Using a decision tree and a Markov model, the clinical implications and direct costs of screening, diagnosis, and treatment were estimated in a cohort of women. The analysis considered two screening cycles and their annual costs. The data on the prevalence of clinical results and the costs were taken from the health managing entity. The information on the progression, persistence, and regression of the health states were taken from the ATHENA study. Results: The screening scheme with the HPV test, genotyping, and reflex cytology compared to conventional cytology was cost-saving. The average cost per screening cycle with the HPV test was estimated at COP $ 129,201,363 and with cytology at COP $ 186,309,952, i.e., a saving of COP $ 57,108,589 (30.7%). Conclusion: The implementation of the screening strategy under evaluation suggests prospective savings derived from the early detection of health states associated with the development of cervical cancer.