Faculty Bibliography

BACKGROUND:Nearly 70% of all cancer deaths occur in low- and middle-income countries (LMICs) and many of these cancer deaths are preventable. In high-income countries (HICs), patient navigation strategies have been successfully implemented to facilitate the patient's journey at multiple points along the cancer care continuum. The purpose of this scoping review is to understand and describe the scope of patient navigation interventions and services employed in LMICs. METHODS:A systematic search of published articles was conducted including Medline, Biosis, Embase, Global Health, and Web of Science. Articles were examined for evidence of patient navigation interventions used in cancer care in LMICs. Evidence was synthesized by navigation service provided and by type of outcome. RESULTS:Fourteen studies reported on patient navigation interventions in cancer care in low-income and middle-income countries in Asia, South America, and Africa. Most studies reported on women's cancers and included navigation interventions at most points along the cancer care continuum i.e. awareness, education, screening participation, adherence to treatment and surveillance protocols. CONCLUSION/CONCLUSIONS:Few studies report on cancer patient navigation in LMICs. With the use of an implementation science framework, patient navigation research can explore a broader range of outcomes to better evaluate its potential role in improving cancer control in LMICs.

BACKGROUND:Mammographic density is one of the strongest risk factors for breast cancer. In the general population, mammographic density can be modified by various exposures; whether this is true for women a strong family history is not known. Thus, we evaluated the association between reproductive, hormonal, and lifestyle risk factors and mammographic density among women with a strong family history of breast cancer but no BRCA1 or BRCA2 mutation. METHODS:We included 97 premenopausal and 59 postmenopausal women (age range: 27-68 years). Risk factor data was extracted from the research questionnaire closest in time to the mammogram performed nearest to enrollment. The Cumulus software was used to measure percent density, dense area, and non-dense area for each mammogram. Multivariate generalized linear models were used to evaluate the relationships between breast cancer risk factors and measures of mammographic density, adjusting for relevant covariates. RESULTS:; P=0.002). Among postmenopausal women, former smokers had a higher mean percent density (19.5% vs. 10.8%; P=0.003) and dense area (26.9% vs. 16.4%; P=0.01) compared to never smokers. After applying the Bonferroni correction, the association between body weight and percent density among premenopausal women remained statistically significant. CONCLUSIONS:In this cohort of women with a strong family history of breast cancer, body weight was associated with mammographic density. These findings suggest that mammographic density may explain the underlying relationship between some of these risk factors and breast cancer risk, and lend support for the inclusion of mammographic density into risk prediction models.

BACKGROUND:Large-scale population studies demonstrate an association between mothers' deaths and child mortality in both lower and higher income countries. The authors estimated children's deaths in association with mothers' deaths from breast or cervical cancer, 2 common cancers in low-income and middle-income countries affecting women of reproductive age, to develop a comprehensive assessment of the death burden of these cancers. METHODS:A Monte Carlo simulation model was devised whereby women were at risk of dying from breast cancer, cervical cancer, or another cause. Compared with children who have living mothers, children of women who die before they reached age 10 years have an elevated risk of death from all causes. Therefore, simulations were conducted, and the impact of mothers' deaths from cervical and breast cancer on associated child mortality was quantified for Bangladesh, Burkina Faso, and Denmark (benchmark analysis), then the analyses were extended to all African countries. RESULTS:Benchmark estimates of child deaths associated with mothers' deaths from breast and cervical cancer resulted in an increment in cancer-related mortality of approximately 2% in Bangladesh, 14% in Burkina Faso, and less than 1% in Denmark. The model predicted an increment in comprehensive cancer deaths when including child death estimates by as high as 30% in certain African countries. CONCLUSIONS:To the authors' knowledge, this is the first study to estimate the impact of a mother's death from cancer on child mortality. The model's estimates call for further investigation into this correlation and underscore the relevance of adequate access to prevention and treatment among women of childbearing age.

Purpose/UNASSIGNED:While Ir-192 remains the mainstay isotope for gynecologic high-dose-rate (HDR) brachytherapy in the U.S., Co-60 is used abroad. Co-60 has a longer half-life than Ir-192, which may lead to long-term cost savings; however, its higher energy requires greater shielding. This study analyzes Co-60 acceptability based on a one-time expense of additional shielding and reports the financial experience of Co-60 in Peru's National Cancer Institute, which uses both isotopes. Material and methods/UNASSIGNED:A nationwide survey was undertaken assessing physician knowledge of Co-60 and willingness-to-pay (WTP) for additional shielding, assuming a source more cost-effective than Ir-192 was available. With 440 respondents, 280 clinicians were decision-makers and provided WTPs, with results previously reported. After completing a shielding report, we estimated costs for shielding expansion, noting acceptability to decision makers' WTP. Using activity-based costing, we note the Peruvian fiscal experience. Results/UNASSIGNED:Shielding estimates ranged from $173,000 to $418,000. The percentage of respondents accepting high-density modular or lead shielding (for union and non-union settings) were 17.5%, 11.4%, 3.9%, and 3.2%, respectively. Shielding acceptance was associated with greater number of radiation oncologists in a respondent's department but not time in practice or the American Brachytherapy Society membership. Peru's experience noted cost savings with Co-60 of $52,400 annually. Conclusions/UNASSIGNED:By comparing the cost of additional shielding for a sample institution's HDR suite with radiation oncologists' WTP, this multi-institutional collaboration noted < 20% of clinicians would accept additional shielding. Despite low acceptability in the US, Co-60 demonstrates cost-favorability in Peru and may similarly in other locations.

Purpose of Review: The burden of breast cancer in low-income and middle-income countries transitioning to higher levels of human development is a public health crisis, set to increase dramatically in the coming decades. This paper provides an overview of the burden in human and economic terms, a summary of the costs, and cost-effective analyses for breast cancer interventions and suggests a way forward through research to better inform national, regional, and global policies for breast cancer control. Recent Findings: Inequitable access to effective health services for breast cancer is striking between and within countries, where much of the costs are shouldered through out-of-pocket expenditures. A variety of factors can influence opportunities for women with breast symptoms to seek care and to access effective and affordable early detection and treatment services. Summary: Research into disparities and solutions to overcome these, including an evidence-informed investment case for breast cancer control, can help to garner the necessary political will and sustained commitments to ensure adequate and sustainable resources are available to reduce disparities in breast cancer survival.

OBJECTIVES/OBJECTIVE:Lynch syndrome (LS) accounts for the majority of inherited endometrial cancers (EC), and the identification of probands presents a unique opportunity to treat and prevent multiple cancers. The diagnosis of EC can provide the indication for women with specific risk factors to undergo genetic testing (GT). We sought to evaluate genetic counseling referrals (GCR) and subsequent GT rates in an ethnically diverse group of high-risk women. METHODS:All women diagnosed with EC between 2011 and 2016 were identified. Risk factors for LS including age, family and personal histories of Lynch-related cancers and loss of tumor mismatch repair (MMR) protein expression were identified from laboratory and medical records. Standard two-sided statistical tests were used. RESULTS:Of 583 women diagnosed with EC, 184 (31.6%) were found to have at least one high-risk characteristic for LS. Among these high-risk women, 58% were given GCR and resulting in only 35% undergoing GT. Ten of the 65 high-risk women who had GT (15.4%) were diagnosed with Lynch syndrome, and all ten met high-risk criteria. Two women of Asian race had tumors exhibiting retained MMR protein expression despite germline testing demonstrating Lynch syndrome. CONCLUSIONS:Many high-risk women do not receive GCR despite a high rate of germline mutations among these women. Improving GCR among high-risk women will lead to more subsequent GT to identify more Lynch syndrome families and prevent additional cancers. Among our ethnically diverse cohort, two women diagnosed with LS had retained MMR protein expression. GCR should be offered to women who possess high-risk characteristics despite normal MMR protein expression.