Strategic recruitment of an ethnically diverse cohort of overweight survivors of breast cancer with lymphedema

Insufficient Reporting of Race and Ethnicity in Breast Cancer Clinical Trials

BACKGROUND

Reporting race and ethnicity in clinical trial publications is critical for determining the generalizability and effectiveness of new treatments. This is particularly important for breast cancer, in which Black women have been shown to have between 40 and 100% higher mortality rate yet are underrepresented in trials. Our objective was to describe changes over time in the reporting of race/ethnicity in breast trial publications.

PATIENTS AND METHODS

We searched ClinicalTrials.gov to identify the primary publication linked to trials with results posted from May 2010-2022. Statistical analysis included summed frequencies and a linear regression model of the proportion of articles reporting race/ethnicity and the proportion of non-White enrollees over time.

RESULTS

A proportion of 72 of the 98 (73.4%) studies that met inclusion criteria reported race/ethnicity. In a linear regression model of the proportion of studies reporting race/ethnicity as a function of time, there was no statistically significant change, although we detected a signal toward a decreasing trend (coefficient for quarter = -2.2, p = 0.2). Among all studies reporting race and ethnicity over the study period, the overall percentage of non-White enrollees during the study period was 21.9%, [standard error (s.e.) 1.8, 95% confidence interval (CI) 18.4, 25.5] with a signal towards a decreasing trend in Non-White enrollment [coefficient for year-quarter = -0.8 (p = 0.2)].

CONCLUSION

Our data demonstrate that both race reporting and overall representation of minority groups in breast cancer clinical trials did not improve over the last 12 years and may have, in fact, decreased. Increased reporting of race and ethnicity data forces the medical community to confront disparities in access to clinical trials. This may improve efforts to recruit and retain members of minority groups in clinical trials, and over time, reduce racial disparities in oncologic outcomes.

WISER Survivor Trial: Combined Effect of Exercise and Weight Loss Interventions on Adiponectin and Leptin Levels in Breast Cancer Survivors with Overweight or Obesity

Adipocyte dysregulation is one mechanism linking overweight and breast cancer recurrence. Exercise and weight loss are associated with a decreased risk of breast cancer recurrence in breast cancer survivors with overweight or obesity, which may be mediated through reduced leptin levels, increased adiponectin levels, and an elevated adiponectin to leptin (A:L) ratio. The four-arm randomized controlled WISER Survivor trial examined the 12-month intervention effects of exercise, weight loss, and the combination of exercise and weight loss on adipokine levels among breast cancer survivors (n = 339) with overweight or obesity. Compared with Control, the Combination of Exercise and Weight Loss decreased leptin levels (-35.9%; 95% CI: -46.8%, -25.0%) and increased A:L ratio (11.6%; 95% CI: 5.6%, 17.6%) but did not change adiponectin levels (4.1%; 95% CI: -3.1%, 11.2%). Compared with Control, Weight Loss Alone decreased leptin levels (-35.6%; 95% CI: -46.6%, -24.5%) and increased A:L ratio (10.6%; 95% CI: 4.7%, 16.5%) but did not change adiponectin levels (0.9%; 95% CI: -6.0%, 7.9%). Compared with Control, Exercise Alone did not change leptin levels, adiponectin levels, or A:L ratio. In analyses that consolidated intervention groups, compared with Control, weight loss of ≥5% decreased leptin levels (p trend < 0.01) and increased A:L ratio (p trend < 0.01) but did not alter adiponectin levels (p trend = 0.53). Weight loss, with or without exercise, was associated with decreased leptin levels in breast cancer survivors with overweight or obesity. Improvements in the adipokine secretion profile (A:L ratio) were primarily driven by a weight loss-induced change in leptin levels.

Understanding organizational perspectives from clinical research stakeholders involved in recruitment for biopharmaceutical-sponsored clinical trials in the United States: Recommendations for organizational initiatives to improve access and inclusivity in clinical research

Background

Equitable representation of racially and ethnically diverse subpopulations in clinical trials continues to be a problem, and trial participants do not always reflect the demographics of the population that the investigational product will be used to treat. The imperativeness of equitable representation of clinically relevant populations in clinical trials has implications for improving health outcomes, increasing knowledge about the safety and efficacy of new treatments across a wider population, and broadening access to innovative treatment options offered in clinical trials.

Methods

The purpose of this study was to understand organizational elements that are involved in the active implementation of racially and ethnically diverse inclusive recruitment practices for biopharmaceutical-funded trials in the United States. Semi-structured, in-depth interviews were used in this qualitative study. The interview guide was designed to explore the perceptions, practices and experiences of 15 clinical research site professionals related to recruiting diverse trial participants. Data analysis utilized an inductive coding process.

Results

Five themes were identified pertaining to the actual implementation of inclusive recruitment practices that provided explanations for organizational components: 1) provision of culturally appropriate, general disease and clinical trial education 2) organizational structure tailored for diverse recruitment 3) strong sense of mission related to improving healthcare through clinical research 4) culture of inclusion 5) inclusive recruitment practices evolving based on learning.

Conclusion

The findings from this study offer insight into improving access to clinical trials by focusing on organizational change initiatives.

The effects of exercise and diet on oxidative stress and telomere length in breast cancer survivors

PURPOSE

Cancer and its treatments accelerate biological aging. This analysis tested the hypothesis that exercise and diet reduce oxidative stress and prevent telomere shortening in breast cancer survivors.

METHODS

In a 2 × 2 factorial design, 342 breast cancer survivors who were insufficiently physically active and had overweight or obesity at enrollment were randomized to one of four treatment groups for 52 weeks: control, exercise alone, diet alone, or exercise plus diet. The endpoints of this analysis were the change from baseline to week 52 in 8-iso-prostaglandin F2α (8-iso-PGF2α) and lymphocyte telomere length.

RESULTS

Baseline telomere length was shorter than age-adjusted normative values (median difference: - 1.8 kilobases; 95% CI - 2.4, - 1.1); equivalent to 21 years (95% CI 17, 25) of accelerated chronological aging. Compared to control, exercise alone did not change 8-iso-PGF2α [9.9%; 95% confidence interval (CI) - 1.0, 20.8] or telomere length (13.8%; 95% CI - 15.6, 43.3). Compared to control, diet alone was associated with reduced 8-iso-PGF2α (- 10.5%; 95% CI - 19.5, - 1.5) but did not change telomere length (12.1%; 95% CI - 17.2, 41.3). Compared to control, exercise plus diet was associated with reduced 8-iso-PGF2α (- 9.8%; 95% CI - 18.7, - 0.9) but did not change telomere length (- 8.5%; 95% CI - 32.1, 15.2). Change in 8-iso-PGF2α did not correlate with change in telomere length (r = 0.07; 95% CI - 0.07, 0.20).

CONCLUSION

In breast cancer survivors, diet alone or exercise plus diet were associated with reduced oxidative stress but did not change telomere length. This analysis may inform future trials that aim to optimize healthy aging in cancer survivors.

WISER Survivor Trial: Combined Effect of Exercise and Weight Loss Interventions on Inflammation in Breast Cancer Survivors

PURPOSE

Physical inactivity and obesity increase risk for breast cancer recurrence and cardiovascular death; inflammation is hypothesized to mediate these associations.

METHODS

In a four-arm randomized controlled trial, 318 breast cancer survivors with overweight or obesity were randomized to exercise alone, weight loss alone, exercise plus weight loss, or control for 12 months. Inflammation outcomes included C-reactive protein (CRP), serum amyloid A (SAA), intracellular adhesion molecule 1 (ICAM-1), and vascular cell adhesion molecule 1 (VCAM-1).

RESULTS

Compared with control, exercise alone increased ICAM-1 (9.3%; 95% confidence interval [CI] = 1.6-16.9) and VCAM-1 (8.6%; 95% CI = 2.6-14.5) but did not change CRP or SAA. Compared with control, weight loss alone reduced CRP (-35.2%; 95% CI = -49.9 to -20.7), and SAA (-25.6%; 95% CI = -39.8 to -11.9) but did not change ICAM-1 or VCAM-1. Compared with control, exercise plus weight loss reduced CRP (-44.1%; 95% CI = -57.1 to -31.1) and SAA (-26.6%; 95% CI = -40.5 to -12.6) but did not change ICAM-1 or VCAM-1. Among 194 participants with elevated CRP at baseline (e.g., >3 mg·L -1 ), compared with control, weight loss alone (0.17; 95% CI = 0.04-0.30) and exercise plus weight loss (0.31; 95% CI = 0.16-0.46) increased the probability of achieving normal CRP at month 12. In analyses that consolidated randomized groups, body weight and adiposity reductions, but not change in fitness level, correlated with decreased CRP, SAA, and ICAM-1 levels.

CONCLUSIONS

In breast cancer survivors with overweight or obesity, weight loss or exercise plus weight loss reduced measures of inflammation that are associated with breast cancer recurrence and cardiovascular death.

The effects of exercise and diet on sex steroids in breast cancer survivors

Insufficient physical activity and obesity are associated with an increased risk of cancer recurrence and death in breast cancer survivors. Sex steroid hormones may mediate these associations. This study tested the hypothesis that exercise and diet, as compared to control, favorably change sex steroid hormones. This analysis of data from a subset of participants in a 2 × 2 factorial trial compares 269 postmenopausal breast cancer survivors who were insufficiently physically active and had overweight or obesity and were randomized to one of four treatment groups for 52 weeks: control, exercise alone, diet alone, or exercise plus diet. Secondary sex steroid hormone endpoints included estradiol, sex hormone-binding globulin (SHBG), and testosterone. Treatment effects were quantified using a mixed model for repeated measures. Compared to control, exercise alone did not significantly change estradiol (-1.9%; 95% CI: -12.6, 8.8), SHBG (2.4%; 95% CI: -9.9, 14.6), or testosterone (1.2%; 95% CI: -12.2, 14.5). Compared to control, diet alone did not significantly change estradiol (-7.8%; 95% CI: -17.6, 1.9), SHBG (8.2%; 95% CI: -4.2, 20.6), or testosterone (-0.8%; 95% CI: -13.6, 12.0). Compared to control, exercise plus diet did not significantly change estradiol (-6.3%; 95% CI: -16.3, 3.6), SHBG (8.8%; 95% CI: -4.0, 21.7), or testosterone (-5.3%; 95% CI: -18.0, 7.4). In postmenopausal breast cancer survivors who were insufficiently physically active and had overweight or obesity, randomization to exercise alone, diet alone, or exercise plus diet did not statistically significantly change sex steroid hormone concentrations at week 52.

A Scoping Review of Strategies to Increase Black Enrollment and Retention in Cancer Clinical Trials

To address health disparities faced by Black patients with cancer, it is critical that researchers conducting cancer clinical trials (CCTs) equitably recruit and retain Black participants, develop strategies toward this aim, and document associated outcomes. This narrative scoping literature review, as part of a larger study, aimed to identify, describe, and categorize strategies and interventions intended to improve the recruitment and retention of Black participants with breast, lung, prostate, colorectal, or multiple myeloma cancer into CCTs. We conducted comprehensive searches in PubMed, Embase, Cochrane Library, PsycInfo, CINAHL, Scopus, and Web of Science with three main concepts: Black persons, neoplasms, and clinical trial recruitment. The search resulted in 1,506 articles, of which 15 met inclusion criteria. Five main categories of recruitment and retention strategies and interventions were identified based on their specific population focus and type of approach: (1) participant identification, (2) provider awareness/resources, (3) focused research staff interventions, (4) patient and community–focused awareness strategies, and (5) participant-directed resources. Thirteen studies had recruitment acceptance rates of over 30%. Eight studies with acceptance rates of ≥ 50% reported implementing ≥ 5 strategies, with an average use of seven strategies across multiple categories. Five studies with acceptance rates ≥ 50% implemented strategies in ≥ 3 categories. Four studies reported retention rates ≥ 74%. Three studies with reported retention rates ≥ 74% used strategies in ≥ 3 categories, and all included strategies aimed at meeting participant needs beyond the study. Our results show that many efforts that aim to increase the recruitment and retention of Black participants into CCTs have great potential, but the most promising strategies use a multiprong approach.

Recruitment of young adult cancer survivors into a randomized controlled trial of an mHealth physical activity intervention

Purpose

Few studies have recruited young adult cancer survivors (YACS) from around the USA into remotely-delivered behavioral clinical trials. This study describes recruitment strategies used in the IMproving Physical Activity after Cancer Treatment (IMPACT) study, a 12-month randomized controlled trial of a mobile physical activity intervention for YACS.

Methods

We conducted formative work to guide development of recruitment messages and used a variety of methods and channels to recruit posttreatment YACS (diagnosed ages 18–39, participating in < 150 min/week of moderate-to-vigorous intensity activity). We used targeted social media advertisements, direct mailings, clinical referrals, and phone calls to potentially eligible individuals identified through local tumor registries. We also asked community organizations to share study information and advertized at a national conference for YACS.

Results

The final sample of 280 participants (23% identified as racial/ethnic minority individuals, 18% male, mean 33.4 ± 4.8 years) was recruited over a 14-month period. About 38% of those who completed initial screening online (n = 684) or via telephone (n = 63) were randomized. The top recruitment approach was unpaid social media, primarily via Facebook posts by organizations/friends (45%), while direct mail yielded 40.7% of participants. Other social media (paid advertisements, Twitter), email, clinic referrals, and conference advertisements each yielded 3% or fewer participants. The most cost-effective methods per participant recruited were unpaid social media posts and direct mailings.

Conclusions

The IMPACT trial successfully met enrollment goals using a national strategy to recruit physically inactive YACS. Our approaches can inform recruitment planning for other remotely-delivered intervention trials enrolling YACS.

Trial registration

ClinicalTrials.govNCT03569605. Registered on 26 June 2018.

Promoting inclusion in clinical trials-a rapid review of the literature and recommendations for action

Background

Without inclusion of diverse research participants, it is challenging to understand how study findings will translate into the real world. Despite this, a lack of inclusion of those from under-served groups in research is a prevailing problem due to multi-faceted barriers acting at multiple levels. Therefore, we rapidly reviewed international published literature, in relation to clinical trials, on barriers relating to inclusion, and evidence of approaches that are effective in overcoming these.

Methods

A rapid literature review was conducted searching PubMed for peer-reviewed articles that discussed barriers to inclusion or strategies to improve inclusion in clinical trial research published between 2010 and 2021. Grey literature articles were excluded.

Results

Seventy-two eligible articles were included. The main barriers identified were language and communication, lack of trust, access to trials, eligibility criteria, attitudes and beliefs, lack of knowledge around clinical trials, and logistical and practical issues. In relation to evidence-based strategies and enablers, two key themes arose: [1] a multi-faceted approach is essential [2]; no single strategy was universally effective either within or between trials. The key evidence-based strategies identified were cultural competency training, community partnerships, personalised approach, multilingual materials and staff, communication-specific strategies, increasing understanding and trust, and tackling logistical barriers.

Conclusions

Many of the barriers relating to inclusion are the same as those that impact trial design and healthcare delivery generally. However, the presentation of these barriers among different under-served groups may be unique to each population’s particular circumstances, background, and needs. Based on the literature, we make 15 recommendations that, if implemented, may help improve inclusion within clinical trials and clinical research more generally. The three main recommendations include improving cultural competency and sensitivity of all clinical trial staff through training and ongoing personal development, the need to establish a diverse community advisory panel for ongoing input into the research process, and increasing recruitment of staff from under-served groups. Implementation of these recommendations may help improve representation of under-served groups in clinical trials which would improve the external validity of associated findings.

Supplementary Information

The online version contains supplementary material available at 10.1186/s13063-021-05849-7.

WISER Survivor Trial: Combined Effect of Exercise and Weight Loss Interventions on Insulin and Insulin Resistance in Breast Cancer Survivors

Obesity-associated breast cancer recurrence is mechanistically linked with elevated insulin levels and insulin resistance. Exercise and weight loss are associated with decreased breast cancer recurrence, which may be mediated through reduced insulin levels and improved insulin sensitivity. This is a secondary analysis of the WISER Survivor clinical trial examining the relative effect of exercise, weight loss and combined exercise and weight loss interventions on insulin and insulin resistance. The weight loss and combined intervention groups showed significant reductions in levels of: insulin, C-peptide, homeostatic model assessment 2 (HOMA2) insulin resistance (IR), and HOMA2 beta-cell function (β) compared to the control group. Independent of intervention group, weight loss of ≥10% was associated with decreased levels of insulin, C-peptide, and HOMA2-IR compared to 0–5% weight loss. Further, the combination of exercise and weight loss was particularly important for breast cancer survivors with clinically abnormal levels of C-peptide.

A randomized trial of exercise and diet on health-related quality of life in survivors of breast cancer with overweight or obesity

BACKGROUND

Obesity is a chronic, relapsing, and progressive disease; it is associated with poor health-related quality of life (HRQOL) in survivors of breast cancer.

METHODS

In this 2 × 2 factorial trial, 351 survivors of breast cancer with overweight or obesity were randomized to 1 of 4 treatment groups for 52 weeks: control, exercise alone, diet alone, or exercise plus diet. HRQOL end points were measured at baseline and at week 52 using the 36-Item Medical Outcomes Survey-Short Form (SF-36). Repeated measures analysis of covariance quantified the estimated treatment difference (ETD).

RESULTS

At baseline, participants had a mean (SD) age of 59.4 years (8.7), body mass index of 34.0 kg/m² (5.9), and 71 participants (20.2%) self-reported fair or poor general health. After 52 weeks, compared with control, the exercise plus diet improved the physical health summary score (ETD: 5.39; 95% CI, 0.55-10.22); exercise alone (ETD: -1.91; 95% CI, -6.60 to 2.79) and diet alone (ETD: 3.16; 95% CI, -1.52 to 7.83) did not change the physical health summary score. Compared with control, exercise alone (ETD: -0.27; 95% CI, -6.60 to 2.79), diet alone (ETD: 3.25; 95% CI, -1.41 to 7.91), and the exercise plus diet (ETD: 1.75; 95% CI, -2.90 to 6.39) did not change the mental health summary score. Exercise alone did not impact any HRQOL subscale; diet alone improved the vitality subscale; exercise plus diet improved the physical functioning, role-physical and vitality subscales.

CONCLUSION

In survivors of breast cancer with overweight or obesity, exercise plus diet improved select HRQOL end points at week 52.

A randomized trial of exercise and diet on body composition in survivors of breast cancer with overweight or obesity

PURPOSE

Obesity increases the risk of cancer recurrence and death in survivors of breast cancer. This study tested the hypothesis that exercise alone, diet alone, and the combination of exercise plus diet reduce body weight and improve body composition in survivors of breast cancer.

METHODS

In this 2 × 2 factorial trial, 351 survivors of breast cancer with overweight or obesity were randomized to one of four treatment groups for 52 weeks: control, exercise alone, diet alone, or exercise plus diet. Endpoints included body weight and body composition measured by dual-energy x-ray absorptiometry.

RESULTS

After 52 weeks, compared with control, diet alone [- 5.39 kg (95% CI - 7.24, - 3.55);- 6.0% (95% CI - 8.0, - 3.9)] and exercise plus diet [- 6.68 kg (95% CI - 8.46, - 4.90);- 7.4% (95% CI - 9.4, - 5.4)] reduced body weight; exercise alone did not change body weight. Compared with control, diet alone [- 3.59 kg (95% CI - 5.00, - 2.17)] and exercise plus diet [- 4.28 kg (95% CI - 5.71, - 2.84)] reduced fat mass; exercise alone did not change fat mass. Compared with control, diet alone [- 0.82 kg (95% CI - 1.50, - 0.15)] and exercise plus diet [- 1.24 kg (95% CI - 1.92, - 0.56)] reduced lean mass; exercise alone did not change lean mass. Compared with control, exercise alone, diet alone, and exercise plus diet did not change bone mineral density.

CONCLUSION

In survivors of breast cancer with overweight or obesity, diet alone or diet plus exercise produced clinically meaningful weight loss at week 52. The majority of weight loss was fat mass.

IMPROVE, a community-based exercise intervention versus support group to improve functional and health outcomes among older African American and Non-Hispanic White breast cancer survivors from diverse socioeconomic backgrounds: Recruitment strategies and baseline characteristics

BACKGROUND

Behavioral intervention studies in older breast cancer survivors, particularly older African American (AA) and socioeconomic status-disadvantaged breast cancer survivors, are lacking. To inform future studies, the authors examined recruitment strategies in older breast cancer survivors who participated in an exercise intervention study.

METHODS

IMPROVE is a randomized trial designed to evaluate a group-based exercise intervention versus a support group (ClinicalTrials.gov identifier, NCT02763228). Participants were aged ≥65 years who had survived stage I through III breast cancer and were within 5 years of treatment completion. Participants were recruited through multiple approaches, including peripheral, linguistic, and constituent-involving strategies that incorporated the identification of potentially eligible patients from 3 local hospitals and from State of Ohio registries and through direct clinician and community organization referrals.

RESULTS

Between October 2016 and November 2019, 7487 patients were screened, 4790 were potentially eligible, and 213 were randomized into the study. The eligible:randomization rates were 4.4% overall and 84%, 8%, and 2% for recruitment using direct referrals, hospital registries, and state registries, respectively. The median age of the randomized cohort was 70 years (range, 65-88 years) and included 44% AA and 44% socioeconomic status-disadvantaged breast cancer survivors. Compared with all registry-eligible patients, directly referred-eligible patients were more likely to be AA versus Non-Hispanic White (41% vs 19%; P = .006), to be contacted successfully (100% vs 33%; P < .0001), and to accept study participation (88% vs 16%; P < .0001).

CONCLUSIONS

Direct referrals appeared to be the most efficient strategy for recruiting AA survivors. Behavioral intervention studies seeking to target older AA and socioeconomic status-disadvantaged breast cancer survivors should include strategies that foster direct referrals to study participation.

Lymphedema Information and Prevention Practices of Women After Breast Cancer Surgery

AIM

This study was carried out to determine women's knowledge about lymphedema precautions and their practice status. The sample of this descriptive and correlationally designed study included 107 women who underwent surgery.

METHOD

This descriptive study's data were collected using a questionnaire form developed by the researcher. The data were structured on a 3-point Likert-type scale. The one-way analysis of variance, correlations, and the Kolmogorov-Smirnov test were used in the statistical analysis.

RESULTS

Three-quarters of the women knew that they should do arm exercises, keep the arm above the heart level while resting, and that blood pressure should not be measured, and jewelry not be worn. However, it was found that the percentage of women who did not know that the arm circumference should be measured at regular intervals or how to evaluate the arm circumference measurements and what to do in case of an injury was the same. It was determined that the precautions that the majority of women took in measuring lymphedema consisted of not measuring blood pressure, not wearing tight jewelry, and wearing an appropriate bra.

CONCLUSION

It is thought that patients should be informed about the development of lymphedema after breast cancer surgery because their compliance with taking the precautions will be important in reducing the incidence, degree, and effects of lymphedema.

The Representation of Gender and Race/Ethnic Groups in Randomized Clinical Trials of Individuals with Systemic Lupus Erythematosus

PURPOSE OF REVIEW

This review evaluated gender and race/ethnic representation in randomized controlled trials (RCTs) of patients with systemic lupus erythematosus (SLE).

RECENT FINDINGS

Whites comprise 33% of prevalent SLE cases and comprised 51% of RCT enrollees. Blacks encompass 43% of prevalent SLE cases, but only represented 14% of RCT enrollees. Hispanics comprise 16% of prevalent SLE cases and 21% of RCT enrollees, while Asians comprise 13% of prevalent SLE cases and 10% of RCT enrollees. Males encompass 9% of SLE cases and 7% of RCT enrollees. The reporting and representation of males have remained stable over time, although their representation in RCTs is slighter lower than the prevalence of SLE in males. The representation of Hispanics, Asians, and Native Americans increased over time. However, the representation of blacks among RCT participants has decreased since 2006-2011. RCTs among SLE patients need larger sample sizes in order to evaluate heterogeneity in outcomes among racial subgroups. It is imperative that novel strategies be developed to recruit racial minorities with SLE by identifying and improving barriers to RCT enrollment in order to better understand the disease's diverse population.