Should low-income countries invest in breast cancer screening?

The differential needs and expectations from general practitioners in oncology between high-income countries and low- and-middle-income countries: results from a survey of Canadian and Nepali oncologists

Background

To address the shortage of oncologists in the wake of the rapidly increasing global cancer burden, general practitioners of oncology (GPOs) have been added to cancer care teams worldwide. GPOs are family physicians with additional training in oncology and their roles differ by both country and region. In this study, we aimed to learn about the roles and expectations of GPOs from the perspective of oncologists in Canada and Nepal.

Methods

A survey was designed and administered to Canadian and Nepali Oncologists between February and November 2022 using Research Electronic Data Capture, a secure web-based software platform hosted at Queen's University in Kingston, Ontario, Canada. Participants were recruited through personal networks/social media in Nepal and the survey was distributed through an email list provided by the Canadian Association of Medical Oncologists.

Results

The survey received 48 responses from Canadian and 7 responses from Nepali oncologists. Canadian respondents indicated that in terms of educational content delivery, clinics with oncologists followed by didactic lectures by oncologists were thought to be the most effective, followed by a small group learning and online education. Nepali oncologists also indicated didactic lectures by oncologists and small group learning would be the most effective teaching techniques, followed by online education and clinics with oncologists. Critical knowledge domains and skills most relevant for GPO training identified by Canadian respondents were managing pain and other common symptoms of cancers, as well as treatment of common side effects, followed by goals of care discussion, post-treatment surveillance for recurrence, and the management of long-term complications from treatment. Respondents from Nepal, however, suggested an approach to diagnosis to patient with increased risk of cancer, and cancer staging were the most critical knowledge domains and skills. The majority of oncologists in both countries thought a training program of 6-12 months was optimal.

Conclusion

We found many similarities in oncologist's opinions of GPOs between the two countries, however, there were also some notable differences such as the need to provide cancer screening services in Nepal. This highlights the need to tailor GPO training programs based on local context.

Breast Cancer in India: Screening, Detection, and Management

Breast cancer is the most common cancer in urban Indian women and the second most common cancer in all Indian women. The epidemiology as well as biology of this cancer seems to be different in the Indian subcontinent when compared with the West. The lack of population-based breast cancer screening programs and delay in seeking a medical consult due to financial and social reasons, including lack of awareness and fear related to a cancer diagnosis, results in delayed diagnosis.

Practice, confidence and continuity of breast self-examination among women in Thailand during COVID-19 pandemic: a cross-sectional study

OBJECTIVE

Breast self-examination (BSE) is the most feasible screening tool compared with clinical breast examination and mammography. It is crucial to address the associated factors of practising BSE to develop a targeted BSE promotion programme and improve the BSE quality in Thai women, particularly during the COVID-19 pandemic.

DESIGN AND SETTING

We conducted a cross-sectional study in Thailand's north and northeast region from March 2020 to November 2022.

PARTICIPANTS

This study involved 405 women aged 30-70 years old.

VARIABLES AND OUTCOMES

Demographic information, health status and BSE were collected using a modified questionnaire based on the Champion Health Belief Model. The outcomes were ever-practising BSE, BSE practice within the last 6 months, continuity of BSE and confidence in doing BSE. Logistic regression and decision tree analysis identified the associated factors.

RESULTS

75.55% of participants ever performed BSE. Around 74.18% did BSE within the last 6 months. Diploma graduates (adjusted OR (aOR) 25.48, 95% CI 2.04 to 318.07), 21-40 reproductive years (aOR 4.29, 95% CI 1.22 to 15.08), ever pregnant (aOR 3.31, 95% CI 1.05 to 10.49), not drinking alcohol (aOR 2.1, 95% CI 1.04 to 4.55), not receiving hormone replacement (aOR 5.51, 95% CI 2.04 to 14.89), higher knowledge (aOR 1.29, 95% CI 1.09 to 1.52), attitude (aOR 1.15, 95% CI 1.05 to 1.26) and practice/cues of action towards BSE were associated with ever-practising BSE. Frequent high-fat diet, high awareness of breast cancer, lower knowledge of BSE and lower attitude toward BSE were associated with not practising BSE within 6 months and BSE discontinuation. Only high knowledge of BSE was associated with absolute confidence in BSE (p<0.05).

CONCLUSION

Despite having a higher percentage than other studies in different countries prior to the pandemic, it is still crucial to improve knowledge of BSE to encourage BSE practice, confidence and continuity of BSE in Thai women. Moreover, the BSE campaign should target women with prolonged exposure to oestrogen and sedentary lifestyle.

Perceived risk and risk reduction behaviours of female first-degree relatives of breast cancer patients attending care at Uganda cancer institute

OBJECTIVE

The objective of this study was to assess the perceived risk of breast cancer (BC) and adoption of risk reduction behaviours among female first-degree relatives (FDRs) of BC patients attending care at the Uganda Cancer Institute (UCI).

METHODS

A cross-sectional study was performed using a questionnaire to collect data between March to October 2019. Adult female FDRs of patients attending care at UCI were recruited consecutively. Breast cancer perceived risk was assessed using a verbal measure; 'My chances of getting BC are great' on a Likert scale with 5 response alternatives. Chi square tests and modified Poisson regression using generalised estimating equations model were used to determine associations and examine factors associated with perceived risk of BC.

RESULTS

We enrolled 296 FDRs from 186 female BC patients. Few participants 118/296 (40%) had high perceived risk of BC. Majority 165/296 (56%), had ever practiced breast self-examination. At the multivariable modified Poisson GEE model, women aged 36-45 years were more likely to perceive themselves to be at high risk of developing BC compared to women aged 18-25 years (adjusted prevalence ratio: 1.174; 95% confidence interval [95%CI] = 1.05-2.88; p value = 0.030) after adjusting for age, religion, educational level and residence.

CONCLUSION

Few FDRs of BC patients perceived themselves to be at high risk of developing BC and do not seek risk reduction measures including screening and early diagnosis approaches. Breast cancer health education especially targeting younger women should emphasize the increased risk of BC in FDRs.

Breast cancer screening practices among Vietnamese women and factors associated with clinical breast examination uptake

Background

This study examined current breast cancer (BC) screening practices among Vietnamese women and the factors associated with the uptake of clinical breast examination (CBE).

Methods

A total of 508 women aged 30–74 years in Hanoi completed a knowledge-attitude-practice (KAP) survey in 2019 including validated measures of breast cancer awareness (Breast-CAM) and health beliefs (Champion’s Health Belief Model Scale). Descriptive statistics, χ2, and ANOVA tests were used to analyse KAP responses across groups with different sociodemographic characteristics. A logistic regression model assessed the associations of knowledge, beliefs, and sociodemographic characteristics with CBE uptake.

Results

Only 18% of respondents were aware of BC signs, risk factors, and screening modalities although 63% had previously received BC screening. CBE was the most common screening modality with an uptake of 51%. A significantly higher proportion of urban residents compared with rural residents (32% vs 18%, Chi-square test, p = 0.04) received mammography. Unlike mammography, CBE uptake was not associated with sociodemographic characteristics (i.e., residence area/education level/occupation/household monthly income/possession of health insurance). CBE uptake was associated with BC knowledge (OR = 2.44, 95%CI: 1.37–4.32), perceived susceptibility to BC (OR = 1.15, 95%CI: 1.05–1.25), and perceived barriers to accessing CBE (OR = 0.88, 95%CI: 0.84–0.92).

Conclusion

The study points to the need for public health education and promotion interventions to address low levels of awareness about BC and to increase uptake of BC screening in Vietnam in advance of screening programme planning and implementation. It also suggests that screening programmes using CBE are promising given current engagement and the absence of socio-demographic disparities.

Breast cancer screening in low and middle-income countries

Breast cancer incidence rates are rising in low and middle-income countries (LMIC), and these populations have reduced access to advanced multidisciplinary treatment. Screening and early detection are therefore critical in these regions but must be affordable and sustainable. Mammography screening programs are well established in more affluent countries, but alternative strategies to reduce the breast cancer burden of LMIC (such as clinical breast examination, general breast health awareness, and addressing modifiable lifestyle factors including obesity) are likely to be more realistic at the present time.

Epidemiologic Pattern of Cancer in Kathmandu Valley, Nepal: Findings of Population-Based Cancer Registry, 2018

PURPOSE

Although cancer is an important and growing public health issue in Nepal, the country lacked any population-based cancer registry (PBCR) until 2018. In this study, we describe the establishment of the PBCR for the first time in Nepal and use the registry data to understand incidence, mortality, and patterns of cancer in the Kathmandu Valley (consisting of Kathmandu, Lalitpur, and Bhaktapur districts), which comprises 10.5% of the estimated 29 million population of Nepal in 2018.

MATERIALS AND METHODS

The PBCR collects information from facilities and communities through the active process. The facilities include cancer or general hospitals, pathology laboratories, hospice, and Ayurvedic centers. In the communities, the field enumerators or female community health volunteers collected the data from the households. In addition, the Social Security and Nursing Division under the Department of Health Services, which provides subsidy for cancer treatment of underprivileged patients, was another major source of data. The collected data were verified for residence, accuracy, and completeness and then entered and analyzed using CanReg5 software.

RESULTS

In the Kathmandu Valley, the PBCR registered 2,156 new cancer cases with overall age-adjusted incidence rate for all cancers of 95.7 per 100,000 population (95.3 for males and 98.1 for females). The age-adjusted mortality rate for males was 36.3 (n = 365) and for females 27.0 (n = 305) per 100,000 population. We found that the commonest cancers in males were lung and stomach, whereas in females, they were breast and lung cancer. Gallbladder cancer was among the top five common cancers in both sex.

CONCLUSION

These findings provide a milestone to understand the cancer burden in the country for the first time using the PBCR and will be helpful to develop and prioritize cancer control strategies.

Mammographic Screening in the Occupied Palestinian Territory: A Critical Analysis of Its Promotion, Claimed Benefits, and Safety in Palestinian Health Research

PURPOSE

To critically review the evidence and opinions expressed about mammographic screening (MS) in research reports on breast cancer in the occupied Palestinian territory (oPt) and to assess whether benefits and harms in MS are presented in a balanced way.

METHODS

Searches of PubMed, Cochrane, MEDLINE, EMBASE, CINAHL, and gray literature identified 14 eligible research reports relating to the oPt. We reviewed these documents and then used a thematic analysis to describe and analyze the evidence and the opinions about MS expressed in them.

RESULTS

All 14 research reports mentioned that MS would improve survival rates in the oPt. Only three gave information on major harmful effects, and only two emphasized that MS must be accompanied by effective treatment to have any beneficial effects on population mortality. There was no consistency in the recommended frequency of MS.

CONCLUSION

Most information presented by Palestinian health researchers was selective and failed to address the important established harms of MS. Thus, calls to support MS in the oPt are not based on a measured discussion of the risks and benefits for women or grounded in the systemic readiness of health care necessary for its effectiveness. As long as diagnostic and treatment facilities remain deficient, screening cannot lead to reduced mortality from breast cancer.

Effectiveness of clinical breast examination as a 'stand-alone' screening modality: an overview of systematic reviews

BACKGROUND

There is uncertainty about the effectiveness of clinical breast examination (CBE) and conflicting recommendations regarding its usefulness as a screening tool for breast cancer. This paper provides an overview of systematic reviews that assessed the effectiveness of CBE as a 'stand-alone' screening modality for breast cancer compared to no screening and focused on its value in low- and middle-income countries (LMICs).

METHODS

We searched MEDLINE, EMBASE, Scopus, Web of Science, and the Cochrane Database of Systematic Reviews for systematic reviews reporting the effectiveness of CBE published prior to October 29, 2019. The main outcomes assessed were mortality and down staging. The AMSTAR 2 checklist was used to assess the methodological quality of the reviews including risk of bias.

RESULTS

Eleven systematic reviews published between 1993 and 2019 were identified. There was no direct evidence that CBE reduced breast cancer mortality. Indirect evidence suggested that a well-performed CBE achieved the same effect as mammography regarding mortality despite its apparently lower sensitivity (40-69% for CBE vs 77-95% for mammography). Greater sensitivity was recorded among younger and Asian women. Moreover, CBE contributed between 17 and 47% of the shift from advanced to early stage cancer.

CONCLUSIONS

CBE merits attention from health system and service planners in LMICs where a national screening programme based on mammography would be prohibitively expensive. In particular, it is likely that considerable value would be gained from conducting implementation scientific research in countries with large numbers of Asian women and/or where younger women are at higher risk.

REGISTRATION

PROSPERO, registration number CRD42019126798 .

Effects of a WhatsApp-Delivered Education Intervention to Enhance Breast Cancer Knowledge in Women: Mixed-Methods Study

Background

Breast cancer is the leading cause of cancer-related death in the female population. Health education interventions based on the use of mobile technologies enable the development of health self-care skills and have emerged as alternative strategies for the control of breast cancer. In previous studies, WhatsApp has stood out as a useful tool in health education strategies; however, it has not yet been applied for breast cancer education.

Objective

This study aimed to analyze the potential of WhatsApp as a health education tool used to improve women's knowledge on the risk reduction of breast cancer. It also aimed to understand how women feel sensitized within the WhatsApp group throughout the intervention and how they incorporate information posted to improve knowledge about early detection and risk reduction methods.

Methods

The study involved a pre-post health educational intervention with 35 women (aged 45-69 years) included in a WhatsApp group to share information (audio, video, text, and images) over 3 weeks on the early detection and risk reduction of breast cancer. Data were collected through questionnaires on topics related to risk reduction, as well as qualitative content analysis of group interactions. Effectiveness and feasibility were analyzed through conversations and the comparison of the scores obtained in the questionnaires before and after the intervention.

Results

A total of 293 messages were exchanged (moderator 120 and users 173). The average scores of the participants were 11.21 and 13.68 points before and after the educational intervention, respectively, with sufficient sample evidence that the difference was significant (P<.001). The intervention enabled women to improve their knowledge on all topics addressed, especially “myths and truths,” “incidence,” “clinical manifestations,” and “protective factors.” Some themes emerged from the interactions in the group, including group dynamics, general doubts, personal narratives, religious messages, daily news, and events.

Conclusions

The use of groups for women in WhatsApp for health education purposes seems to be a viable alternative in strategies on breast cancer control, especially as it provides a space for the exchange of experiences and disinhibition. However, the need for a moderator to answer the questions and the constant distractions by members of the group represent important limitations that should be considered when improving this strategy.

Aberrant alternative splicing in breast cancer

Alternative splicing is critical for human gene expression regulation, which plays a determined role in expanding the diversity of functional proteins. Importantly, alternative splicing is a hallmark of cancer and a potential target for cancer therapeutics. Based on the statistical data, breast cancer is one of the top leading causes of cancer-related deaths in women worldwide. Strikingly, alternative splicing is closely associated with breast cancer development. Here, we seek to provide a general review of the relationship between alternative splicing and breast cancer. We introduce the process of alternative splicing and its regulatory role in cancers. In addition, we highlight the functions of aberrant alternative splicing and mutations of splicing factors in breast cancer progression. Moreover, we discuss the role of alternative splicing in cancer drug resistance and the potential of being targets for cancer therapeutics.

Interventions integrating non-communicable disease prevention and reproductive, maternal, newborn, and child health: A systematic review

Reproductive, maternal, newborn, and child health (RMNCH) care services could be critical entry points for preventing non-communicable diseases in women and children. In high-income countries, non-communicable diseases screening has been integrated into both the medical and public health systems. To integrate these services in low- and middle-income countries, it is necessary to closely examine its effectiveness and feasibility. In this systematic review, we evaluated the effectiveness of integrating gestational and non-gestational non-communicable diseases interventions and RMNCH care among women and children in low- and middle-income countries. This systematic review included randomized and quasi-randomized controlled trials published from 2000 to 2015. Participants included reproductive-age women, children < 5 years old, and RMNCH care providers. The included interventions comprised packaged care/services that integrated RMNCH services with non-communicable disease care. The outcomes were maternal and/or infant mortality and complications, as well as health care service coverage. We analyzed six studies from 7,949 retrieved articles. Yoga exercise (p < 0.01) and nutritional improvements (p < 0.05) were effective in reducing gestational hypertension and diabetes. Additionally, integrating cervical cancer and RMNCH services was useful for identifying potential cervical cancer cases. Interventions that integrate non-communicable disease care/screening and RMNCH care may positively impact the health of women and children in low- and middle-income countries. However, as primary evidence is scarce, further research on the effectiveness of integrating non-communicable disease prevention and RMNCH care is warranted. (Review Registration: PROSPERO International prospective register of systematic reviews (CRD42015023425).).

Alternative Splicing in Breast Cancer and the Potential Development of Therapeutic Tools

Alternative splicing is a key molecular mechanism now considered as a hallmark of cancer that has been associated with the expression of distinct isoforms during the onset and progression of the disease. The leading cause of cancer-related deaths in women worldwide is breast cancer, and even when the role of alternative splicing in this type of cancer has been established, the function of this mechanism in breast cancer biology is not completely decoded. In order to gain a comprehensive view of the role of alternative splicing in breast cancer biology and development, we summarize here recent findings regarding alternative splicing events that have been well documented for breast cancer evolution, considering its prognostic and therapeutic value. Moreover, we analyze how the response to endocrine and chemical therapies could be affected due to alternative splicing and differential expression of variant isoforms. With all this knowledge, it becomes clear that targeting alternative splicing represents an innovative approach for breast cancer therapeutics and the information derived from current studies could guide clinical decisions with a direct impact in the clinical advances for breast cancer patients nowadays.