Breast Cancer Prevention

Breast cancer (BC) is the most commonly diagnosed cancer in women worldwide, with early-onset cases increasing due to genetic and lifestyle factors. Traditional prevention strategies have shown limited effectiveness, creating the need for innovative approaches. The MELIORA project develops an AI-driven digital tool, the Virtual Coach (VC), to promote sustainable behaviour change in physical activity, diet, and alcohol use. Three randomized-controlled studies will be conducted: MELIORA-HEALTHY (women at risk, n=1080 in Greece, Lithuania, Spain), MELIORA-PATIENTS (women undergoing treatment, n=400 in Lithuania, Spain), and MELIORA-SURVIVORS (post-treatment survivors, n=600 in Lithuania, Spain, Sweden). Participants across diverse regions and backgrounds will be randomized to standard lifestyle advice or the same advice plus the MELIORA VC app. Each study lasts 12 months, with outcomes assessed at baseline, 6, and 12 months. The primary outcome is physical activity, with secondary outcomes including sedentary behaviour, diet, alcohol use, and quality of life. If effective, the MELIORA VC could offer a scalable, cost-effective model for BC prevention and survivorship care, providing valuable evidence to guide public health strategies.

The goal of this observational study is to learn more about how genes impact the risk of breast cancer. Anyone 18 or older living in the US is eligible, and a diagnosis of cancer is NOT required. Study participation is online, and it takes about 20 minutes to complete health surveys and request a saliva collection kit sent through US mail. In return, study participants may opt to receive information about their genetic ancestry at no cost.

The Puerto Rico Community Engagement Alliance (PR-CEAL) is an NIH-funded initiative which aims to improve health literacy and healthcare access across Puerto Rico. In 2024, the program developed a new study which goal is to improve breast cancer screening rates in Puerto Rico titled Monitoreo Activo de Mamografía y Orientación (MAMO). This multi-level study will recruit non-adherent women based on residence, age (40 to 74 years old), and having had two or more years since their last breast cancer screening. The intervention will focus on 39 municipalities with screening rates below the median, through three different levels: educational, navigation, and integration. At the educational level, the intervention will employ a community-based recruitment strategy led by Community Health Workers (CHWs), who will identify eligible women at community venues and conduct follow-up via telephone to provide educational support. Drawing on findings from a previous pilot study and addressing barriers specific to non- adherent women, the navigation-level intervention will incorporate the role of a Community Navigator to deliver tailored support and facilitate breast cancer screening uptake through collaboration with local networks and partnerships. The integration-level intervention will build upon the educational and navigation components by enhancing knowledge, attitudes, skills, and organizational processes within Federally Qualified Health Clinics (FQHCs). This component is designed to foster a supportive healthcare environment that encourages routine mammography screening. The integration-level intervention will be implemented in four FQHCs across PR.

To support the development of the MELIORA digital app for the MELIORA main intervention, an initial pilot study (Data Collection Campaign, DCC) is being conducted with the three target participant groups: healthy women at increased risk of developing breast cancer (BC), BC patients, and BC survivors across the four intervention countries (Spain, Greece, Lithuania, Sweden). The planned sample size for each group is 156 healthy women at risk (defined as not meeting recommendations for a healthy lifestyle), 58 BC patients, and 86 BC survivors. Each participant is asked to test and evaluate a preliminary version of the MELIORA app over a 14-day period. The DCC takes place in the early stages of the project, as part of the intervention development phase, to inform the technical refinement and preliminary evaluation of the MELIORA digital app.

This study aims to to improve physical activity and metabolic outcomes for breast cancer prevention in South Asian Indian immigrant women.

The PREVCAR study is a cross-sectional investigation aimed at evaluating dietary habits among women undergoing breast cancer screening. Specifically, the study focuses on adherence to the Mediterranean diet, a dietary pattern recognized for its potential protective role against chronic diseases, including breast cancer. The PREVCAR study will include approximately 35,000 women aged 18 and older who participate in the "Prevention Caravan" and complete both the breast cancer screening and the MEDAS (Mediterranean Diet Adherence Screener) questionnaire. This 14-item questionnaire measures dietary behavior, with scores reflecting levels of adherence to the Mediterranean diet. The primary objective of the study is to determine the average MEDAS score among participants. Secondary objectives include analyzing how adherence varies across different known breast cancer risk factors-such as age, menopausal status, hormonal therapy use, and reproductive history-and assessing the prevalence of malignant breast lesions identified through the screening.

Breast cancer (BC) is the fifth leading cause of cancer deaths in women worldwide. In Hong Kong (HK), BC is the most common cancer, ranking third in cancer deaths among females. International guidelines advocate regular mammographic screening for women aged 40-50 to 69-74, reducing BC mortality by 20%. The success and effectiveness of an organized cancer screening program are largely dependent on high adherence or uptake rates. However, nonadherence to BC screening is common and the suboptimal uptake rate remains a challenge, particularly in Asian countries. Conventional interventions are effective in increasing mammographic screening uptake but are time-consuming, labor-dependent, and expensive. Mobile messenger chatbots are a potential cost-saving tool for enhancing BC screening uptake because they involve only a one-off development cost and a small maintenance cost . Currently, most studies evaluating the effectiveness of mobile health interventions in improving mammography screening uptake have been conducted in Western populations . Health-seeking behaviors for cancer screening in the Chinese population differ from those of Caucasians because of differences in culture, health beliefs, and education, especially regarding breast-related diseases. Chinese women often feel embarrassed when talking with healthcare workers in person about breast health. Communicating with a fully automated chatbot can minimize embarrassment. Additionally, linguistically and culturally tailored interventions are effective in increasing cancer screening rates in the Chinese population. However, studies evaluating combined theory-based mHealth interventions to enhance BC screening uptake are scarce. Two theory-based WhatsApp chatbots were developed to promote CRC screening, and the longitudinal repeat fecal immunochemical test (FIT) adherence rate of a population-based CRC screening program in HK. These two chatbots used in investigator's previous studies had designs similar to that of the proposed chatbot, except for the health education materials. The chatbot design can be adopted directly with minor modifications to the workflow, replacement of content from CRC screening-related to BC screening-related, and culturally modified education materials. Consequently, the investigators can develop a new chatbot for this study at a lower cost and in a shorter time.