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1.
Int J Cancer ; 153(12): 1971-1977, 2023 12 15.
Artigo em Inglês | MEDLINE | ID: mdl-37715464

RESUMO

The World Health Organization recommends thermal ablation (TA) as an alternative to cryotherapy within "screen-and-treat" cervical cancer programs in low- and middle-income countries (LMICs), including among women living with HIV (WLWH). Data on TA efficacy among WLWH are limited, however. We conducted a clinical trial to evaluate efficacy of TA for treatment of biopsy-confirmed cervical intraepithelial neoplasia grades 2 and 3 (CIN2/3) among WLWH in Kenya. Nonpregnant HPV-positive WLWH age 25 to 65 years underwent colposcopy-directed biopsy, and same-day treatment with TA, if eligible. Women with biopsy-confirmed CIN2/3 at baseline had colposcopy-directed biopsies at 12 months to determine cure. A total of 376 participants underwent TA during the study period. At baseline, 238 (63.3%) had normal histology, 39 (10.4%) had CIN1, 15 (4.0%) had CIN2, 55 (14.6%) had CIN3, 7 (1.9%) had microinvasive cancer and 22 (5.6%) had indeterminate results. Twelve-month follow-up pathology results are available for 59 of 70 (84.3%) participants with CIN2/3 at baseline. Of these, 39 (66.1%, 95% CI 0.54-0.99) had successful treatment, defined as biopsy-confirmed CIN1 or normal findings, while 20 (33.9%, 95% CI 0.22-0.46) had treatment failure, defined as persistent biopsy-confirmed CIN2 or worse. Treatment failure was 23.1% (95% CI 0.17-0.46) and 39.9% (95% CI 0.23-0.51) among women with CIN2 and CIN3 at baseline, respectively. HIV-positive women with CIN2/3 have high rates of treatment failure at 1-year following thermal ablation. This highlights a significant limitation in the current WHO cervical cancer secondary-prevention strategy and calls for strategies to optimize cervical precancer treatment in this population.


Assuntos
Infecções por HIV , Infecções por Papillomavirus , Displasia do Colo do Útero , Neoplasias do Colo do Útero , Feminino , Humanos , Adulto , Pessoa de Meia-Idade , Idoso , Gravidez , Neoplasias do Colo do Útero/cirurgia , Neoplasias do Colo do Útero/patologia , Quênia/epidemiologia , Infecções por Papillomavirus/prevenção & controle , Displasia do Colo do Útero/epidemiologia , Biópsia , Infecções por HIV/complicações , Colposcopia , Papillomaviridae
2.
Gynecol Oncol ; 135(1): 163-71, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25072931

RESUMO

OBJECTIVE: To assess the association between diabetes mellitus (DM) and the incidence and disease-specific mortality of endometrial cancer (EC). METHODS: MEDLINE, EMBASE and conference abstracts of the 2011-2013 Annual Meetings of Society of Gynecological Oncology were searched for reports of original cohort studies that enrolled diabetic and non-diabetic women who were free of EC at baseline to compare the incidence and disease-specific mortality of EC by DM status. The included reports were examined for demographic characteristics of study populations, study design, effect measures and risk of bias. Statistical heterogeneity was evaluated with Chi-square test of the Cochrane Q statistics at the 0.05 significance level and I(2) statistic. Publication bias was assessed by visual examination of a funnel plot and the Egger's test for small-study effects. RESULTS: Twenty-nine cohort studies (17 prospective, 12 retrospective) were eligible for this review, 23 of which reported EC incidence, five reported disease-specific mortality and one reported both. For incidence of EC among women with versus without DM, the summary relative risk (RR) was 1.89 (95%CI, 1.46-2.45; p<0.001) and the summary incidence rate ratio was 1.61 (95%CI, 1.51-1.71; p<0.001). The pooled RR of disease-specific mortality was 1.32 (95%CI, 1.10-1.60; p=0.003), while results in the studies reporting standardized mortality ratios were inconsistent. There remains considerable amount of clinical and methodological heterogeneity among the included studies; moreover, the hazard ratios for incident EC showed significant statistical heterogeneity and therefore were not quantitatively synthesized. CONCLUSIONS: There is consistent evidence for an independent association between DM and an increased risk of incident EC, while the association between DM and EC-specific mortality remains uncertain. Further studies with better considerations for selection bias, information bias and confounding will further facilitate causal inference involving DM and EC.


Assuntos
Complicações do Diabetes/epidemiologia , Neoplasias do Endométrio/complicações , Neoplasias do Endométrio/epidemiologia , Causas de Morte , Estudos de Coortes , Complicações do Diabetes/mortalidade , Neoplasias do Endométrio/mortalidade , Feminino , Humanos , Incidência
3.
Ecancermedicalscience ; 18: 1719, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39021542

RESUMO

Background: Cervical cancer continues to be a major health issue in low- and middle-income countries (LMICs). Despite increasing access to screening, access to precancer treatment remains a significant challenge in LMICs, highlighting a need for innovative, accessible and resource-appropriate treatment approaches, including self-administered therapies. Methods: A cross-sectional mixed-methods study was conducted among men aged 25-65 with a current female partner in Kisumu County, Kenya. Participants were sequentially recruited and surveyed to evaluate their understanding of human papillomavirus and cervical cancer, their views on screening and treatment and their attitudes toward self-administered therapies. Focus group discussions (FGDs) with a subset of the survey participants further explored their treatment preferences and perceptions. Results: Two hundred fourteen men participated in the survey, and 39 men participated in FGDs. The median age was 39 years, and 51% had a primary school education or less. Most (96%) were in a committed relationship, and 74% earned $10 or less daily. There was strong support for self-administered topical therapies, with 98% willing to support their partners using such treatments if available. Additionally, most participants were open to supporting necessary abstinence or condom use, though 76% believed their partners might hesitate to request condom use. When given an option, most preferred their partner to self-administer such therapies at home compared to provider administration at a health facility, citing convenience, cost-effectiveness and privacy. Preferences varied between two potential therapies, 5-Fluorouracil and Artesunate, based on their administration frequency, duration and abstinence requirements. Qualitative findings largely supported the quantitative analysis. Conclusion: The study demonstrates strong support for self-administered topical therapies for cervical precancer among Kenyan men. Additional research on acceptability, feasibility and efficacy in different LMICs could pave the way for these therapies to help bridge current cervical precancer treatment gaps in these settings.

4.
medRxiv ; 2024 Mar 06.
Artigo em Inglês | MEDLINE | ID: mdl-38585806

RESUMO

Purpose: Innovative strategies are urgently needed to meet the World Health Organization's 2030 target of treating 90% of women with precancerous cervical lesions, especially in countries most affected by cervical cancer. We assessed the acceptability of self-administered intravaginal therapies for treating cervical precancer in women undergoing cervical cancer screening and precancer treatment in Kenya. Methods: We conducted a cross-sectional study among women aged 18 to 65 years undergoing cervical cancer screening or precancer treatment between January and October 2023 in Kisumu County, Kenya. Participants completed a questionnaire about their perceptions and perceived acceptability of self- or provider-administered topical therapies for cervical precancer treatment. Quantitative data were summarized using descriptive statistics. Results: A total of 379 questionnaires were completed. The median age of participants was 35 years (IQR 25-62), 62% had a primary education or less, and 71% earned $5 or less daily. All participants had been screened for cervical cancer, and 191 (51%) had received precancer treatment, primarily thermal ablation. Ninety-eight percent of participants were willing to use a self-administered intravaginal therapy for cervical precancer, if available. The majority, 91%, believed their male partner would support their use. Given a choice, 63% preferred self-admiration at home compared to provider-administration of a topical therapy in the clinic, citing time and cost savings. In multivariate analysis, married women were more likely to expect partner support for self-administration than single women. Participants preferred a therapy used less frequently but for a longer duration, compared to daily use therapy with a shorter duration of use. Conclusions: Self-administered intravaginal therapies for cervical precancer treatment are highly acceptable among women undergoing screening and precancer treatment in Kenya.

5.
medRxiv ; 2024 Feb 07.
Artigo em Inglês | MEDLINE | ID: mdl-38370772

RESUMO

Background: Cervical cancer continues to be a major health issue in low- and middle-income countries (LMICs). Despite increasing access to screening, access to precancer treatment remains a significant challenge in LMICs, highlighting a need for innovative, accessible, and resource-appropriate treatment approaches, including self-administered therapies. Methods: A cross-sectional mixed-methods study was conducted among men aged 25-65 with a current female partner in Kisumu County, Kenya. Participants were sequentially recruited and surveyed to evaluate their understanding of HPV and cervical cancer, their views on screening and treatment, and their attitudes toward self-administered therapies. Focus group discussions with a subset of the survey participants further explored their treatment preferences and perceptions. Results: Two hundred fourteen men participated in the survey, and 39 men participated in focus group discussions. The median age was 39 years, and 51% had a primary school education or less. Most (96%) were in a committed relationship, and 74% earned $10 or less daily. There was strong support for self-administered topical therapies, with 98% willing to support their partners using such treatments if available. Additionally, most participants were open to supporting necessary abstinence or condom use, though 76% believed their partners might hesitate to request condom use. When given an option, most preferred their partner to self-administer such therapies at home compared to provider administration at a health facility, citing convenience, cost-effectiveness, and privacy. Preferences varied between two potential therapies, 5-Fluorouracil (5FU) and Artesunate, based on their administration frequency, duration, and abstinence requirements. Qualitative findings largely supported the quantitative analysis. Conclusions: The study demonstrates strong support for self-administered topical therapies for cervical precancer among Kenyan men. Additional research on acceptability, feasibility, and efficacy in different LMICs could pave the way for these therapies to help bridge current cervical precancer treatment gaps in these settings.

6.
medRxiv ; 2024 Jun 07.
Artigo em Inglês | MEDLINE | ID: mdl-38883743

RESUMO

Objective: To determine the safety, tolerance, and adherence to self-administered intravaginal 5% fluorouracil (5FU) cream as adjuvant therapy following cervical intraepithelial neoplasia grade 2 or 3 (CIN2/3) treatment among women living with HIV (WLWH) in Kenya. Methods: A Phase I Pilot trial was performed among 12 WLWH in Kenya, aged 18-49 years between March 2023-February 2024 (ClinicalTrial.gov NCT05362955). Participants self-administered 2g of 5FU intravaginally every other week for eight applications. Safety was assessed using a standardized grading scale, and adherence was evaluated using self-report, inspection of used applicators, and weighing of the study drug. Results: The mean age and CD4 count were 43.9 years and 781 cells/mm3, respectively. Seven (58%) had an 8th-grade education or less. All 12 reported at least one grade I adverse event (AE), 1 (8%) reported a grade 2 AE, no grade 3 or 4 AEs were reported. Increased vaginal discharge (n=9, 75%) and irritation (n=5, 42%), with a mean duration of 3.2 and 2.8 days, respectively, were the most commonly reported AEs. Provider-observed AEs included grade 1 cervical erythema and superficial abrasions. All participants tolerated all eight 5FU doses, and 96% adherence was demonstrated. Conclusion: Self-administered 5FU following CIN2/3 treatment among WLWH in Kisumu, Kenya, was safe, tolerable, and associated with high adherence. Randomized trials are needed to investigate whether adjuvant 5FU can improve treatment outcomes or serve as primary cervical precancer treatment in sub-Saharan Africa. A self-administered therapy may be transformative in increasing access to treatment and, hence, secondary prevention of cervical cancer.

7.
Infect Agent Cancer ; 19(1): 24, 2024 May 17.
Artigo em Inglês | MEDLINE | ID: mdl-38760798

RESUMO

BACKGROUND: The World Health Organization recommends human papillomavirus (HPV) testing for primary cervical cancer screening, including among women living with HIV (WLWH). Low-and-middle-income countries account for 85% of the cervical cancer burden globally, yet have limited access to HPV-based screening, largely due to cost. This study aims to compare the performance of a rapid, isothermal amplification HPV assay (ScreenFire) to that of the Xpert HPV assay for the detection of HPV and cervical precancer among WLWH in Malawi. METHODS: We utilized stored self- and provider-collected specimens from a prospective cohort study of WLWH in Malawi from July 2020 to February 2022. Specimens were tested with both Xpert and ScreenFire HPV assays. The overall and within-channel non-hierarchical agreement between ScreenFire and Xpert was determined for both self- and provider-collected specimens. Hierarchical ScreenFire HPV positivity by channel was compared to Xpert for each histological diagnosis-cervical intraepithelial neoplasia grade 2 or worse (CIN2+) compared to

8.
medRxiv ; 2024 Mar 13.
Artigo em Inglês | MEDLINE | ID: mdl-38559146

RESUMO

Background: Women in low- and middle-income countries (LMICs) bear a disproportionate burden of global incidence and deaths from cervical cancer, despite being a preventable disease. Prevention efforts in LMICs are hindered in part by lack of access to cervical precancer treatment, due to weak health infrastructure and a lack of adequate human resources to deliver current provider-administered precancer treatments. Innovative strategies are urgently needed to close the cervical precancer treatment gap in LMICs, including the use of self-administered topical therapies for which efficacy evidence is available from high-income settings. We investigated African women's perceptions and perceived acceptability of these therapies for cervical precancer treatment. Methods: Between November 2022 and April 2023, we conducted five focus group discussions (FGDs) with women ages 25-65 years undergoing cervical cancer screening or precancer treatment in Kisumu, Kenya. The FGDs explored women's experiences with screening and precancer treatment, their acceptability of topical therapies for precancer treatment, and perceived barriers and facilitators to uptake. The FGDs were moderated by local qualitative research assistants, conducted in local languages, transcribed, coded, and analyzed using qualitative description using NVIVO software. Results: Twenty-nine women participated, with a mean age of 35.4 years (SD 6.5). All had undergone cervical cancer screening, and 25 (83%) had a history of precancer treatment with ablation or excision. Multiple themes were identified related to women's perceptions of topical therapies. Participants were highly receptive of topical treatments, with many favoring the option of self-administration compared to provider-administration of such therapies. Self-administration of topical therapies was felt to help address challenges associated with current treatment methods, including difficulty in access, pain with procedures, cost, and lack of privacy with pelvic exams. Participants had a preference for topical therapies that are used less frequently compared to those used daily. Conclusions: Among Kenyan women with a history of cervical precancer treatment, self-administered topical therapies for precancer are acceptable and have the potential to address barriers, including access, privacy, and cost, that hinder precancer treatment in LMICs. If supported by efficacy studies in LMICs, self-administered topical therapies offer a scalable approach to closing the precancer treatment gap in LMICs. Trial registration: Not applicable.

9.
medRxiv ; 2024 Feb 23.
Artigo em Inglês | MEDLINE | ID: mdl-38617305

RESUMO

Background: The World Health Organization (WHO) recommends human papillomavirus (HPV) testing for primary cervical cancer screening, including among women living with HIV (WLWH). Low-and-middle-income countries (LMICs) account for 85% of the cervical cancer burden globally, yet have limited access to HPV-based screening, largely due to cost. This study aims to compare the performance of a rapid, isothermal amplification HPV assay (ScreenFire) to that of the Xpert HPV assay for the detection of HPV and cervical precancer among WLWH in Malawi. Methods: We utilized stored self- and provider-collected specimens from a prospective cohort study of WLWH in Malawi from July 2020 to February 2022. Specimens were tested with both Xpert and ScreenFire HPV assays. The overall and within-channel non-hierarchical agreement between ScreenFire and Xpert was determined for both self- and provider-collected specimens. Hierarchical ScreenFire HPV positivity by channel was compared to Xpert for each histological diagnosis - cervical intraepithelial neoplasia grade 2 or worse (CIN2+) compared to

10.
JCO Glob Oncol ; 10: e2300311, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38359369

RESUMO

PURPOSE: To achieve the WHO cervical cancer elimination targets, countries globally must achieve 70% cervical cancer screening (CCS) coverage. We evaluated CCS uptake and predictors of screening positive at two public HIV care programs in western Kenya. METHODS: From October 2007 to February 2019, data from the Family AIDS Care and Education Services (FACES) and Academic Model Providing Access to Healthcare (AMPATH) programs in western Kenya were analyzed. The study population included women age 18-65 years enrolled in HIV care. Screening uptake was calculated annually and overall, determining the proportion of eligible women screened. Multivariate logistic regression assessed predictors of positive screening outcomes. RESULTS: There were 57,298 women living with HIV (WLWHIV) eligible for CCS across both programs during the study period. The mean age was 31.4 years (IQR, 25.9-37.8), and 39% were on antiretroviral therapy (ART) at the first CCS-eligible visit. Of all eligible women, 29.4% (95% CI, 29.1 to 29.8) underwent CCS during the study period, 27.0% (95% CI, 26.5 to 27.4) in the AMPATH program, and 35.6% (95% CI, 34.9 to 36.4) in the FACES program. Annual screening uptake varied greatly in both programs, with coverage as low as 1% of eligible WLWHIV during specific years. Age at first screening, CD4 count within 90 days of screening, current use of ART, and program (AMPATH v FACES) were each statistically significant predictors of positive screening. CONCLUSION: CCS uptake at two large HIV care programs in Kenya fell short of the WHO's 70% screening target. Screening rates varied significantly on the basis of the availability of funding specific to CCS, reflecting the limitations of vertical funding programs.


Assuntos
Infecções por HIV , Neoplasias do Colo do Útero , Humanos , Feminino , Adulto , Adolescente , Adulto Jovem , Pessoa de Meia-Idade , Idoso , Neoplasias do Colo do Útero/prevenção & controle , Ácido Acético , Detecção Precoce de Câncer , Quênia/epidemiologia , Infecções por HIV/diagnóstico , Infecções por HIV/epidemiologia , Infecções por HIV/terapia
11.
Front Oncol ; 14: 1360337, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38532929

RESUMO

Purpose: Cervical cancer disproportionately impacts women in low- and middle-income countries (LMICs). The World Health Organization's (WHO) 90/70/90 strategy aims to eliminate cervical cancer by 2030 by increasing HPV vaccination coverage to 90%, screening 70% of eligible women, and effectively treating 90% of those with abnormal results by 2030, potentially preventing 62 million deaths in LMICs. LMICs, however, struggle with limited access to cervical precancer treatment, in part due to a lack of trained professionals and weak health systems. Effective non-surgical, self-administered, which have demonstrated efficacy in high-income countries, could bridge the treatment gap in LMICs and may be more scalable and cost-effective than provider-administered therapies. To inform feasibility studies in LMICs, data are needed on the role of male partners in influencing the acceptability and uptake of self-administered topical therapies, including their support of recommended abstinence and contraception guidelines associated with these therapies. Methods: Between November 2022 and April 2023, we conducted five focus group discussions (FGDs) with men aged 25 to 65 years in Kenya to explore their perspective and perceived support regarding their female partners using topical self-administered therapies for cervical precancer treatment. The FGDs were moderated by local qualitative research assistants and conducted in local languages, transcribed, coded, and analyzed using qualitative description. Results: Thirty-nine male participants meeting the eligibility criteria participated in five FGDs. The mean age of participants was 42.5 years. Most participants, 79.5%, had a female partner with a history of cervical precancer treatment, 5.1% did not, and 15.4% were unsure of their female partner's prior precancer treatment history. The study aimed to assess men's support of their female partners' use of topical therapies for treating cervical precancer. We find that male participants strongly express acceptance and willingness to support their wives or partners in using such therapies, if available. Reported supportive behavior included permitting the use of the therapies and support of maintaining abstinence during the recommended times. Additionally, participants desired male involvement in clinic and community-based education about topical therapies to facilitate widespread support. Conclusion: The use of self-administered topical therapies for cervical precancer treatment, if supported by efficacy studies in LMICs, may support achieving the WHO's 2030 goal of 90% treatment access. We find that with adequate education, men express overwhelming support of their female partner's use of topical therapies, including adherence to abstinence and contraception guidelines.

12.
medRxiv ; 2023 Dec 14.
Artigo em Inglês | MEDLINE | ID: mdl-38168442

RESUMO

Background: Women living with HIV (WLWH), the majority of whom live in low- and middle-income countries (LMICs), are at higher risk of cervical precancer, known as cervical intraepithelial neoplasia (CIN), and are up to six times more likely to get cervical cancer. Current CIN treatment methods, primarily ablation or excision, have high treatment failure rates among WLWH, up to 30% for CIN grade 2 or 3 (CIN2/3) at 24 months following ablation. Without strong follow-up many WLWH with treatment failure are at risk of developing invasive cervical cancer, highlighting the urgent need for improved CIN treatment methods. Prior studies in high-income countries (HICs) have demonstrated that 5-Fluorouracil (5-FU) cream, an antimetabolite drug that is easily accessible in LMICs, can be used intravaginally as adjuvant therapy following primary CIN2/3 treatment in WLWH to reduce CIN2/3 recurrence. While the safety, acceptability, and efficacy of self-administered 5-FU for cervical precancer treatment has been demonstrated in HICs, it has not been studied among WLWH in LMICs who bear the greatest burden of cervical cancer. Methods: We are conducting a Phase I pilot study investigating the feasibility of using 5-FU cream as an adjuvant, self-administered intravaginal therapy following cervical intraepithelial neoplasia grade 2/3 (CIN2/3) treatment among WLWH in Kenya (ClinicalTrials.gov NCT05362955). Twelve participants will be enrolled in this single-arm study. Participants will self-administer 2g of 5% 5-FU cream intravaginally every other week for eight applications. The primary objective is to determine safety, defined as the type, frequency, and severity of adverse events (AEs) using a standardized grading scale. The secondary objectives are uptake, tolerability, adherence, and acceptability. Results: There are no results at this time as this is an ongoing study. Discussion: To achieve the World Health Organization (WHO) 90/70/90 global cervical cancer elimination goals, which include 90% of women with cervical precancer adequately treated by 2030, it is essential to employ innovative and resource-appropriate strategies to improve cervical precancer treatment among WLWH. The use of 5-FU as adjuvant therapy following current screen & treat programs may be a feasible and scalable strategy to optimize outcomes in this high-risk group. This clinical trial will provide important feasibility data to inform future randomized efficacy trials in LMICs. Trial registration: ClinicalTrials.gov identifier: NCT05362955.

13.
BMJ Glob Health ; 8(2)2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-36792229

RESUMO

Disparities in cancer research persist around the world. This is especially true in global health research, where high-income countries (HICs) continue to set global health priorities further creating several imbalances in how research is conducted in low and middle-income countries (LMICs). Cancer research disparities in Africa can be attributed to a vicious cycle of challenges in the research ecosystem ranging from who funds research, where research is conducted, who conducts it, what type of research is conducted and where and how it is disseminated. For example, the funding chasm between HICs and LMICs contributes to inequities and parachutism in cancer research. Breaking the current cancer research model necessitates a thorough examination of why current practices and norms exist and the identification of actionable ways to improve them. The cancer research agenda in Africa should be appropriate for the African nations and continent. Empowering African researchers and ensuring local autonomy are two critical steps in moving cancer research towards this new paradigm.


Assuntos
Países em Desenvolvimento , Neoplasias , Humanos , Ecossistema , África , Renda , Prioridades em Saúde
14.
medRxiv ; 2023 Dec 26.
Artigo em Inglês | MEDLINE | ID: mdl-38234805

RESUMO

Purpose: Cervical cancer disproportionately impacts women in low- and middle-income countries (LMICs). The World Health Organization's (WHO) 90/70/90 strategy aims to eliminate cervical cancer by 2030 by increasing HPV vaccination coverage to 90%, screening 70% of eligible women, and effectively treating 90% of those with abnormal results by 2030, potentially preventing 62 million deaths in LMICs. LMICs, however, struggle with limited access to cervical precancer treatment, in part due to a lack of trained professionals and weak health systems. Effective non-surgical, self-administered, which have demonstrated efficacy in high-income countries, could bridge the treatment gap in LMICs and may be more scalable and cost-effective than provider-administered therapies. To inform feasibility studies in LMICs, data are needed on the role of male partners in influencing the acceptability and uptake of self-administered topical therapies, including their support of recommended abstinence and contraception guidelines associated with these therapies. Methods: Between November 2022 and April 2023, we conducted five focus group discussions (FGDs) with men aged 25 to 65 years in Kenya to explore their perspective and perceived support regarding their female partners using topical self-administered therapies for cervical precancer treatment. The FGDs were moderated by local qualitative research assistants and conducted in local languages, transcribed, coded, and analyzed using qualitative description. Results: Male participants in the FGDs strongly expressed acceptance and willingness to support their wives or partners in using topical therapies for cervical precancer treatment, if available. Reported supportive behavior included permitting the use of the therapies and support of maintaining abstinence during the recommended times. Additionally, participants desired male involvement in clinic and community-based education about topical therapies to facilitate widespread support. Conclusion: The use of self-administered topical therapies for cervical precancer treatment, if supported by efficacy studies in LMICs, may support achieving the WHO's 2030 goal of 90% treatment access. We find that with adequate education, men express overwhelming support of their female partner's use of topical therapies, including adherence to abstinence and contraception guidelines.

15.
Cancer Discov ; 13(2): 269-274, 2023 02 06.
Artigo em Inglês | MEDLINE | ID: mdl-36734325

RESUMO

SUMMARY: Essential cancer treatments are not accessible, affordable, or available to patients who need them in many parts of the world. A new Access to Oncology Medicines (ATOM) Coalition, using public-private partnerships, aims to bring essential cancer medicines and diagnostics to patients in low- and lower middle-income countries.


Assuntos
Medicamentos Essenciais , Neoplasias , Humanos , Neoplasias/tratamento farmacológico , Oncologia , Medicamentos Essenciais/uso terapêutico , Acessibilidade aos Serviços de Saúde , Custos e Análise de Custo
16.
BMJ ; 379: e070115, 2022 12 15.
Artigo em Inglês | MEDLINE | ID: mdl-36521855

RESUMO

Persistent human papillomavirus infection is the central cause of cervical cancer, the leading cause of cancer death among women worldwide. Clear evidence from both randomized trials and population based studies shows that vaccination against human papillomavirus reduces the incidence of cervical pre-cancer. These data suggest that the vaccine reduces the incidence of cervical cancer. However, human papillomavirus vaccine coverage is inadequate in all countries, especially in low and middle income countries where disease burden is highest. Supply side strategies to improve coverage include increasing the availability of low cost vaccines, school located delivery, single dose vaccine schedules, and development of vaccines that do not need refrigeration. Demand side strategies include enhancing provider recommendations, correcting misinformation, and public awareness campaigns. The near elimination of cervical cancer is achievable through increased uptake of human papillomavirus vaccination and efforts to increase screening for cervical cancer, especially when enacted to reduce disparities in across the world.


Assuntos
Infecções por Papillomavirus , Vacinas contra Papillomavirus , Neoplasias do Colo do Útero , Humanos , Feminino , Neoplasias do Colo do Útero/epidemiologia , Neoplasias do Colo do Útero/prevenção & controle , Neoplasias do Colo do Útero/diagnóstico , Infecções por Papillomavirus/complicações , Infecções por Papillomavirus/epidemiologia , Infecções por Papillomavirus/prevenção & controle , Papillomavirus Humano , Vacinação
17.
Med Image Learn Ltd Noisy Data (2022) ; 13559: 206-217, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-36315110

RESUMO

Image quality control is a critical element in the process of data collection and cleaning. Both manual and automated analyses alike are adversely impacted by bad quality data. There are several factors that can degrade image quality and, correspondingly, there are many approaches to mitigate their negative impact. In this paper, we address image quality control toward our goal of improving the performance of automated visual evaluation (AVE) for cervical precancer screening. Specifically, we report efforts made toward classifying images into four quality categories ("unusable", "unsatisfactory", "limited", and "evaluable") and improving the quality classification performance by automatically identifying mislabeled and overly ambiguous images. The proposed new deep learning ensemble framework is an integration of several networks that consists of three main components: cervix detection, mislabel identification, and quality classification. We evaluated our method using a large dataset that comprises 87,420 images obtained from 14,183 patients through several cervical cancer studies conducted by different providers using different imaging devices in different geographic regions worldwide. The proposed ensemble approach achieved higher performance than the baseline approaches.

18.
Ecancermedicalscience ; 15: 1237, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34221120

RESUMO

Although cervical cancer is preventable, in 2018, approximately 570,000 new cases occurred globally. Cervical cancer disproportionately affects low- and middle-income countries (LMICs), which accounted for 90% of deaths in 2018. Women living with the Human Immunodeficiency Virus (WLWH) are at increased risk of cervical cancer and are in urgent need of prevention. Despite evidence-based guidelines for screening and prevention of cervical cancer, the majority of WLWH in LMICs lack access to cervical cancer screening. Despite tremendous gains made in access to life prolonging antiretroviral therapy for WLWH, most are served by vertical human immunodeficiency virus (HIV) programmes which do not integrate these two crucial services. We present a case of a WLWH, in HIV care for a decade, who was recently diagnosed with preventable, advanced stage cervical cancer.

19.
JCO Glob Oncol ; 7: 1722-1729, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34936373

RESUMO

PURPOSE: Nearly half of Kenyan women with breast cancer present with advanced disease-owing partially to limited patient education and screening limitations in low- and middle-income countries. With increasing access to nurse-led cervical cancer screening (CCS) in government clinics in Kenya, we investigated provider-perceived barriers and facilitators to integrating clinical breast examinations (CBEs) with ongoing CCS programs in Kisumu County, Kenya. METHODS: CCS providers within the Ministry of Health Clinics in Kisumu County, Kenya, were recruited to participate in a two-phase, sequential, mixed methods study. Knowledge of CBE guidelines was assessed with a questionnaire. Providers with significant CCS and CBE experience then completed a one-on-one interview discussing barriers and facilitators to integration. RESULTS: Sixty-nine providers from 20 randomly selected facilities participated in the survey. Providers all agreed that breast cancer screening was very important. Although 93% said that they routinely offered CBEs, only 22% of these providers screened at least eight of their last 10 patients. Forty-four percent identified four or more of five signs and symptoms of breast cancer, and 33% identified four to five risk factors. Although providers showed enthusiasm for integration of CBEs into their practices, barriers were identified and grouped into four themes: (1) fragmentation of services, (2) staffing shortage and inadequate on-the-job training, (3) limited space and referral system challenges, and (4) limited patient awareness on need for cancer screening. CONCLUSION: Addressing providers' concerns by providing routine on-the-job clinical training, improving staffing shortages, strengthening the diagnostic and treatment referral pathway, and increasing patient education are some of the first steps in facilitating integration of CBEs with CCS services in primary care clinics in Kenya.


Assuntos
Neoplasias da Mama , Neoplasias do Colo do Útero , Instituições de Assistência Ambulatorial , Neoplasias da Mama/diagnóstico , Detecção Precoce de Câncer , Feminino , Humanos , Quênia , Neoplasias do Colo do Útero/diagnóstico
20.
Int J Gynaecol Obstet ; 152(1): 60-67, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-32347550

RESUMO

OBJECTIVE: To evaluate access to treatment after community-based HPV testing as testing within screen-and-treat programs has the potential to lower mortality from cervical cancer in low-resource settings. METHODS: A prospective cohort study was conducted in western Kenya in 2018. Women aged 25-65 years underwent HPV self-testing. HPV-positive women were referred for cryotherapy. Participant data were obtained from questionnaires during screening and treatment. The proportion successfully accessing treatment and variables associated with successful treatment was determined. RESULTS: Of the 750 women included, 140 (18.6%) tested positive for HPV. Of them, 135 were notified of their results, of whom 77 (59.2%) sought treatment and 73 (52.1%) received cryotherapy. Women who received treatment had a shorter time from screening to result notification (median 92 days, interquartile range [IQR] 84-104) compared to those who did not (97 days, IQR 89-106; P=0.061). In adjusted analyses, women with a history of cervical cancer screening (odds ratio [OR] 11, 95% confidence interval [CI] 1.42-85.20) and those electing result notification through a home visit (OR 4, 95% CI 1.23-14.17) were significantly more likely to acquire treatment at follow-up. CONCLUSION: Linkage to treatment after community-based HPV screening in this population was low, highlighting the need for strategies aimed at strengthening treatment linkage in similar settings.


Assuntos
Serviços de Saúde Comunitária/organização & administração , Papillomaviridae/isolamento & purificação , Infecções por Papillomavirus/prevenção & controle , Displasia do Colo do Útero/prevenção & controle , Neoplasias do Colo do Útero/prevenção & controle , Adulto , Idoso , Estudos de Coortes , Feminino , Humanos , Quênia , Programas de Rastreamento , Pessoa de Meia-Idade , Infecções por Papillomavirus/diagnóstico , Vacinas contra Papillomavirus , Estudos Prospectivos , Encaminhamento e Consulta , Inquéritos e Questionários , Neoplasias do Colo do Útero/diagnóstico , Vacinação , Displasia do Colo do Útero/diagnóstico
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