Yehoda M. Martei

Background: We aimed to determine temporal trends and racial disparities in utilization and time to treatment initiation of cyclin dependent kinase 4/6 (CDK4/6) inhibitors and pertuzumab for first-line metastatic breast cancer. Methods: We extracted data from a nationwide electronic health record–derived deidentified database. Female patients aged 18 years and older with estrogen receptor–positive and HER2-negative or HER2-positive metastatic breast cancer eligible for CDK4/6 inhibitors (March 2015-October 2021) or pertuzumab (July 2012-September 2021) were included. Our outcomes were adjusted temporal trends in the proportion of patients receiving respective therapies using logistic regression with natural cubic splines for time trends and tested for changes in utilization over time within and between racial groups (non-Hispanic White or non-Hispanic Black). Similar models using linear regression estimated mean time to treatment initiation. Results: A total of 5173 (non-Hispanic White = 4478; non-Hispanic Black = 695) estrogen receptor–positive and HER2-negative and 2321 (non-Hispanic White = 1915; non-Hispanic Black = 406) HER2-positive metastatic breast cancer patients were included. There were statistically significant differences in the proportion initiating CDK4/6 inhibitors over time within racial groups (non-Hispanic White: 23.5%, 95% confidence interval [CI] = 20.1% to 27.3%, in 2015 to 53.8%, 95% CI = 48.6% to 59.0%, in 2021; non-Hispanic Black: 20.6%, 95% CI = 11.9% to 33.0%, in 2015 to 73.6%, 95% CI = 61.7% to 83.0%, in 2021) and between groups (P = .009). There was a statistically significant increase in utilization of pertuzumab within both racial groups over time (P < .001), but no statistically significant difference between groups (P = .45). Time to treatment initiation decreased over time with no statistically significant differences in time to treatment initiation trends between the 2 groups. Conclusions: Utilization of targeted therapies increased over time, however non-Hispanic Black patients were less likely to receive CDK4/6 inhibitors compared with non-Hispanic White. Approximately half of eligible patients did not receive pertuzumab. Further research is needed to understand mediators and design interventions to address underutilization of these therapies and those contributing to racial disparities in CDK4/6 inhibitor utilization.

Background: HIV, cancer, and their respective treatments are independently associated with cardiovascular risk, but limited data exist on the intersection of these conditions. The purpose of this study was to gain insights into the cardiovascular risk factor burden and cardiac function in people with HIV (PWH) treated for breast cancer. Methods: In a cohort of PWH and breast cancer treated with anthracyclines and/or trastuzumab (2017–2022) in Botswana, we assessed pre-treatment (baseline) left ventricular ejection fraction (LVEF), and prospectively obtained an echocardiogram at least one year after cancer treatment initiation. Wilcoxon signed rank sum test was used to test the differences between baseline and follow-up LVEF. Results: Thirty-three women were enrolled at a median of 2.1 years (Quartile (Q)1-Q3 1.8–3.1) from their cancer treatment initiation. The median age was 48.0 years (Q1-Q3 44.0–54.0). All but one patient was on antiretroviral therapy (ART); the median ART duration was 11.6 years (Q1-Q3 6.3–15 years) with a median viral load of 30 (Q1-Q3 0–30) and CD4 count of 874 (Q1-Q3 361–1131). At baseline, 70% were obese or overweight, and 24.2% reported hypertension; this increased to 30.3% at follow-up. The median LVEF at baseline was 65% (Q1-Q3 60–68%), and decreased to 62% (Q1-Q3 59–65%) at follow-up; an absolute difference of 2.9%, 95%CI: -5.3 to -0.2% ( p = 0.038). There was no report of clinical heart failure. Conclusions: Obesity and hypertension are highly prevalent amongst PWH and breast cancer. We also noted a statistically significant, but modest decline in LVEF after cancer therapy initiation. Further studies are needed to prospectively characterize the cardiovascular risk factor burden and changes in cardiac structure and function following cardiotoxic cancer treatment in this population.

PURPOSE: To evaluate baseline distress among patients with breast cancer in Botswana, and assess the impact of culturally tailored peer survivor video narratives on distress and its mediators. METHODS: We enrolled patients with stage I-IV breast cancer at Princess Marina Hospital. A Setswana-translated National Comprehensive Cancer Network distress thermometer (DT) and problem list (PL) were used for distress screening. DT score of ≥4 was considered a positive screen for moderate to high (moderate-high) distress. We analyzed independent PL factors associated with moderate-high distress using logistic regression. Participants then watched one to two videos and completed a postintervention DT/PL assessment after each video at 4 and 8 weeks. We conducted descriptive statistics to explore the impact of the videos. RESULTS: One hundred six participants were enrolled, of whom 103 completed baseline DT and 106 completed baseline PL. Sixty-seven percent (69/103) of participants screened positive for moderate-high distress at baseline. Fear (odds ratio [OR], 11.25 [95% CI, 1.66 to 76.49]; P = .01) and appearance (OR, 4.96 [95% CI, 1.03 to 23.80]; P = .046) were PL factors significantly associated with moderate-high distress in the multivariable model. Sixty-eight and 47 participants completed postvideo assessments at approximately 4 and approximately 8 weeks, respectively. The greatest impact was observed at 8 weeks after watching two videos—29.8% of participants with moderate-high distress had no or mild distress. Similarly, there was a 29% (44%-15%; P = .005) and 17% (32%-15%; P = .03) absolute decrease from baseline to 8 weeks, in the proportion of patients who identified fear and appearance as sources of distress, respectively. CONCLUSION: Two thirds of patients with breast cancer screened positive for moderate-high distress. Fear and appearance were sources of distress significantly associated with a positive screen. Our results show promising potential of peer survivor videos to mitigate distress and its potential mediators among patients with breast cancer.

Low- and middle-income countries (LMICs) report disproportionally worse cancer mortality. Current global cancer control efforts focus predominantly on expanding access to multimodality treatment for patients, whereas less attention has been spent on implementing strategies to ensure sustained quality assessment and improvement across the cancer care continuum. The goal of this focused review was to examine specific resource barriers to the development and implementation of quality improvement programs in LMICs. In this article, we use a nonsystematic review process to discuss the existing literature on four resource barriers within the context of cancer care delivery in LMICs, focusing on staff, time allocated for quality improvement work, research infrastructure, and funding. We provide possible solutions to address these barriers and share examples of specific quality improvement initiatives implemented across different world regions. Possible solutions to address these resource barriers include investment in human resources by increasing recruitment and training of the workforce, engagement of medical trainees and patients in quality improvement work, establishment of cancer registries and electronic medical records, and prioritization by large international funding agencies to invest in quality improvement research in LMICs. This review highlights four prevalent resources barriers to quality improvement in LMICs. Using examples from Botswana, Colombia, India, and Rwanda, we demonstrate solutions that may help overcome these barriers.

Importance: Racial disparities in receipt of guideline-concordant care (GCC) among older patients with potentially curable breast cancer are understudied.Objective: To determine whether rates of GCC, time to treatment initiation, and all-cause mortality in stage I to III breast cancer differ by race among older adults.Design, Setting, and Participants: This cohort study used data from the National Cancer Database and included patients aged 65 years and older with stage I to III breast cancer, diagnosed between 2010 and 2019. Data analysis was conducted between July 2022 to July 2023.Exposures: Race, defined as non-Hispanic Black or non-Hispanic White.Main Outcomes and Measures: The primary outcome was nonreceipt of GCC, defined using the National Comprehensive Cancer Network guidelines, and all-cause mortality. The secondary outcome was time to treatment initiation. Univariate and multivariate regression analysis were used to determine association between exposure and outcomes. Models for GCC and all-cause mortality included age, stage, receptor status, year of diagnosis, Charlson-Deyo comorbidity index, insurance, health care setting, and neighborhood-level educational attainment and median income.Results: The analytic cohort included 258 531 participants (mean [SD] age, 72.5 [6.0] years), with 25 174 participants who identified as non-Hispanic Black (9.7%) and 233 357 participants who identified as non-Hispanic White (90.3%), diagnosed between 2010 and 2017. A total of 4563 non-Hispanic Black participants (18.1%) and 35 374 non-Hispanic White participants (15.2%) did not receive GCC. Non-Hispanic Black race, compared with non-Hispanic White race, was associated with increased odds of not receiving GCC in the multivariate analysis (adjusted odds ratio [aOR], 1.13; 95% CI, 1.08-1.17; P < .001). Non-Hispanic Black race was associated with 26.1% increased risk of all-cause mortality in the univariate analysis, which decreased to 4.7%, after adjusting for GCC and clinical and sociodemographic factors (adjusted hazard ratio, 1.05; 95% CI, 1.01-1.08; P = .006). Non-Hispanic White race, compared with non-Hispanic Black race, was associated with increased odds of initiating treatment within 30 (OR, 1.65; 95% CI, 1.6-1.69), 60 (OR, 2.11; 95% CI, 2.04-2.18), and 90 (OR, 2.39; 95% CI, 2.27-2.51) days of diagnosis.Conclusions and Relevance: In this cohort study, non-Hispanic Black race was associated with increased odds of not receiving GCC and less timely treatment initiation. Non-Hispanic Black race was associated with increased all-cause mortality, which was reduced after adjusting for GCC and clinical and sociodemographic factors. These findings suggest that optimizing timely receipt of GCC may represent a modifiable pathway to improving inferior survival outcomes among older non-Hispanic Black patients with breast cancer.

PURPOSE: Women living with HIV (WLWH) experience decreased breast cancer survival. We sought to determine whether WLWH surviving breast cancer also experienced different quality of life (QOL) gain. METHODS: Women who enrolled in the Thabatse Cancer Cohort across oncology centers in Botswana for the initial treatment of stage I-III breast cancer from October 2010 to February 2022 were included. Exclusion criteria were no documented definitive therapy and incomplete data at treatment end or 24 ± 3 months after treatment. QOL was measured quarterly using the SF-8 questionnaire. G methods using weighted exposure and outcome modules were used to mitigate potential bias from imbalances in demographic and cancer characteristics by HIV status. Primary analysis was change in physical component summary (PCS) and mental component summary (MCS) from treatment end to 24 months after treatment for WLWH compared with women without HIV. RESULTS: Of 603 women enrolled, the final analysis included 298, comprising 85 WLWH and 213 women without HIV. Most common reasons for exclusion were no documented definitive treatment (n = 114) and death before 21 months after treatment (n = 137). WLWH were younger, were less wealthy, and had more estrogen receptor/progesterone receptor positive tumors. Overall, PCS and MCS significantly increased from treatment end to 24 months after treatment, from 50.8 to 52.8 and 51.8 to 53.7, respectively. There was no difference in the change of the PCS or MCS with HIV infection, 2.2 (95% CI, –0.4 to 4.9) and 0.6 (95% CI, –1.7 to 2.9), respectively. CONCLUSION: HIV infection did not impede QOL gain at 24 months after treatment in women surviving breast cancer. Further work is needed to clarify the role of HIV on specific treatment-related morbidities and in other malignancies.

Objectives Narrative communication has demonstrated effectiveness in promoting positive health behaviours, delivering support and coping with complex decision-making. Formal research evaluating this intervention for cancer treatment in Africa is lacking. We aimed to develop, and assess acceptability and usability of survivor video narrative interventions for breast cancer treatment in Botswana. Design A pilot study design. Setting Single-centre, tertiary hospital, sub-Saharan Africa. Participants Eight women, ≥18 years old, with stages I–III breast cancer were enrolled for the video intervention. 106 women, ≥18 years old, with stages I–IV breast cancer viewed the narrative videos and 98 completed the acceptability and usability surveys. Intervention Survivor narrative videos were developed using the theory of planned behaviour and using a purposive sample of Batswana, Setswana-speaking, breast cancer survivors, who had completed systemic treatment and surgery with high rates of adherence to the prescribed treatment plan. Primary outcomes We assessed acceptability and usability among prospectively enrolled patients presenting for routine breast cancer care at Princess Marina Hospital in Botswana, using a 13-item survey. Results Participants expressed high acceptability and usability of the videos, including 99% (97/98) who strongly agreed/agreed that the video presentations were easy to understand, 92% (90/98) who would recommend to other survivors and 94% (92/98) who wished there were more videos. Additionally, 89% (87/98) agreed or strongly agreed that the one-on-one instruction on how to use the tablet was helpful and 87% (85/98) that the video player was easy to use. Conclusion Culturally appropriate survivor video narratives have high acceptability and usability among patients with breast cancer in Botswana. There is an opportunity to leverage this intervention in routine breast cancer care for treatment support. Future studies will test the implementation and effectiveness of narrative videos on a wider scale, including for patients being treated for other cancers.

Background: Patients with breast cancer in sub-Saharan Africa (SSA) experience a disproportionate burden of mortality. Fidelity to treatment guidelines, defined as receiving optimal dose and frequency of prescribed treatments, improves survival. We sought to identify patient factors associated with treatment fidelity and how this may differ for people with HIV (PWH) and breast cancer. Methods: We conducted a qualitative study of women who initiated outpatient treatment for stages I-III breast cancer in Botswana, with deviance sampling of high- and low-fidelity patients. One-on-one interviews were conducted using semi-structured guides informed by the Theory of Planned Behavior. The sample size was determined by thematic saturation. Transcribed interviews were double coded with an integrated analytic approach. Results: We enrolled 15 high- and 15 low-fidelity participants from August 25, 2020 to December 15, 2020, including 10 PWH (4 high, 6 low fidelity). Ninety-three percent had stage III disease. Barriers to treatment fidelity included stigma, social determinants of health (SDOH), and health system barriers. Acceptance and de-stigmatization, peer and other social support, increased knowledge and self-efficacy were identified as facilitators. The COVID-19 pandemic amplified existing socioeconomic stressors. Unique barriers and facilitators identified by PWH included intersectional stigma, and HIV and cancer care integration, respectively. Conclusion: We identified multilevel modifiable patient and health system factors associated with fidelity. The facilitators provide opportunities for leveraging existing strengths within the Botswana context to design implementation strategies to increase treatment fidelity to guideline-concordant breast cancer therapy. However, PWH experienced unique barriers, suggesting that interventions to address fidelity may need to be tailored to specific comorbidities.