Researcher Experience and Comfort With Telemedicine and Remote Patient Monitoring in Cancer Treatment Trials

BACKGROUND

Since the onset of COVID-19, oncology practices across the US have integrated telemedicine (TM) and remote patient monitoring (RPM) into routine care and clinical trials. The extent of provider experience and comfort with TM/RPM in treatment trials, however, is unknown. We surveyed oncology researchers to assess experience and comfort with TM/RPM.

METHODS

Between April 10 and June 1, 2022, we distributed email surveys to US-based members of the American Society of Clinical Oncology (ASCO) whose member records indicated interest or specialization in clinical research. We collected respondent demographic data, clinical trial experience, workplace characteristics, and comfort and experience with TM/RPM use across trial components in phase I and phase II/III trials. TM/RPM was defined as clinical trial-related healthcare and monitoring for patients geographically separated from trial site.

RESULTS

There were 141 surveys analyzed (5.1% response rate). Ninety percent of respondents had been Principal Investigators, 98% practiced in a norural site. Most respondents had enrolled patients in phase I (82%) and phase II/III trials (99%). Across all phases and trial components, there was a higher frequency of researcher comfort compared to experience. Regarding remote care in treatment trials, 75% reported using TM, RPM, or both. Among these individuals, 62% had never provided remote care to trial patients before the pandemic.

CONCLUSION

COVID-19 spurred the rise of TM/RPM in cancer treatment trials, and some TM/RPM use continues in this context. Among oncology researchers, higher levels of comfort compared with real-world experience with TM/RPM reveal opportunities for expanding TM/RPM policies and guidelines in oncology research.

Ambient particulate matter air pollution exposure and ovarian cancer incidence in the USA: An ecological study

OBJECTIVE

To investigate associations between air particulate matter of ≤2.5 μm in diameter (PM2.5 ) and ovarian cancer.

DESIGN

County-level ecological study.

SETTING

Surveillance, epidemiology, and end results from a collection of state-level cancer registries across 744 counties. Data from the Environmental Protection Agency's network for PM2.5 monitoring was used to calculate trailing 5- and 10-year PM2.5 county-level values. County-level data on demographic characteristics were obtained from the American Community Survey.

POPULATION

A total of 98 751 patients with histologically confirmed ovarian cancer as a primary malignancy from 2000 to 2016.

METHODS

Generalised linear regression models were developed to estimate the association between PM2.5 and PM10 levels, over 5- and 10-year periods of exposure, and ovarian cancer risk, after accounting for county-level covariates.

MAIN OUTCOME MEASURES

Risk ratios for associations between ovarian cancer (both overall and specifically epithelial ovarian cancer) and PM2.5 levels.

RESULTS

For the 744 counties included, the average PM2.5 level from 1990 through 2018 was 11.75 μg/m3 (SD = 3.7) and the average PM10 level was 22.7 μg/m3 (SD = 5.7). After adjusting for county-level covariates, the overall annualised ovarian cancer incidence was significantly associated with increases in 5-year PM2.5 (RR = 1.11 per 10 units (μg/m3 ) increase, 95% CI 1.06-1.16). Similarly, when the analysis was limited to epithelial cell tumours and adjusted for county-level covariates there was a significant association with trailing 5-year PM2.5 exposure models (RR = 1.12 per 10 units increase, 95% CI 1.08-1.17). Likewise, 10-year PM2.5 exposure was associated with ovarian cancer overall and with epithelial ovarian cancer.

CONCLUSIONS

Higher county-level ambient PM2.5 levels are associated with 5- and 10-year incidences of ovarian cancer, as measurable in an ecological study.

Barriers to endocrine therapy adherence: perspectives of Black breast cancer survivors and their providers

PURPOSE

Adherence to oral endocrine therapy (ET) remains an issue for up to half of women prescribed these medications. There is emerging data that Black breast cancer survivors (BCS) have lower rates of ET adherence. Given the disparities in breast cancer recurrence and survival for Black BCS compared to their White counterparts, the goal of this study is to better understand barriers to ET adherence among Black BCS from the patient and provider perspectives.

METHODS

In this qualitative study, we conducted semi-structured interviews between October 29, 2021, and March 1, 2023. Interviews were recorded and transcribed, and coded data were organized into primary and secondary themes. Participants were recruited from a single academic cancer center. A convenience sample of 24 Black BCS and 9 medical oncology providers was included. Eligible BCS were 18 years or older, English-speaking, diagnosed with stage I-III hormone receptor-positive breast cancer, who had initiated ET.

RESULTS

Mean age of the BCS was 55 years (interquartile range, IQR 17 years). About one-fourth had a high school diploma or less (26.1%) and 47% completed a college education or higher. Approximately one-third of participants had annual household incomes of $40,000 or less (30.4%) or more than $100,000 (30.4%). Forty-three percent of the patient participants had private insurance; 11% were insured through Medicaid or the federal healthcare exchange; 26.1% had Medicare; and 13% were uninsured. Of the 9 medical oncology providers interviewed, 2 were advanced practice providers, and 7 were medical oncologists. We found 3 major themes: (1) Black BCS often had concerns about ET before initiation; (2) after initiation, both BCS and providers reported side effects as the most impactful barrier to ET adherence; and (3) survivors experienced challenges with managing ET side effects.

CONCLUSIONS

Our results suggest that multifaceted support interventions for managing ET-related symptoms may lead to improved adherence to ET among Black women and may reduce disparities in outcomes.

IMPLICATIONS FOR CANCER SURVIVORS

Multifaceted support interventions for managing ET-related symptoms may lead to improved adherence to ET among Black breast cancer survivors.

Racial and Ethnic Differences in Psychosocial Care Use Among Adults With Metastatic Breast Cancer: A Retrospective Analysis Across Six New York City Health Systems

PURPOSE

A metastatic breast cancer (mBC) diagnosis can affect physical and emotional well-being. However, racial and ethnic differences in receipt of outpatient psychosocial care and supportive care medications in adults with mBC are not well described.

METHODS

Adults with mBC were identified in the INSIGHT-Clinical Research Network, a database inclusive of >12 million patients receiving care across six New York City health systems. Outpatient psychosocial care was operationalized using Common Procedure Terminology codes for outpatient psychotherapy or counseling. Psychosocial/supportive care medications were defined using Rx Concept Unique Identifier codes. Associations between race/ethnicity and outpatient care and medication use were evaluated using logistic regression.

RESULTS

Among 5,429 adults in the analytic cohort, mean age was 61 years and <1% were male; 53.6% were non-Hispanic White (NHW), 21.4% non-Hispanic Black (NHB), 15.9% Hispanic, 6.1% Asian/Native Hawaiian/Pacific Islander (A/NH/PI), and 3% other or unknown. Overall, 4.1% had ≥one outpatient psychosocial care visit and 63.4% were prescribed ≥one medication. Adjusted for age, compared with NHW, Hispanic patients were more likely (odds ratio [OR], 2.14 [95% CI, 1.55 to 2.92]) and A/NH/PI patients less likely (OR, 0.35 [95% CI, 0.12 to 0.78]) to have an outpatient visit. NHB (OR, 0.59 [95% CI, 0.51 to 0.68]) and Asian (OR, 0.36 [95% CI, 0.29 to 0.46]) patients were less likely to be prescribed medications.

CONCLUSION

Despite the prevalence of depression, anxiety, and distress among patients with mBC, we observed low utilization of psychosocial outpatient care. Supportive medication use was more prevalent, although differences observed by race/ethnicity suggest that unmet needs exist.

Socioeconomic Deprivation and Health Care Use in Patients Enrolled in SWOG Cancer Clinical Trials

Importance

Reducing acute care use is an important strategy for improving value. Patients with cancer are at risk for unplanned emergency department (ED) visits and hospital stays (HS). Clinical trial patients have homogeneous treatment; despite this, structural barriers to care may independently impact acute care use.

Objective

To examine whether ED visits and HS within 12 months of trial enrollment are more common among Medicare enrollees who live in areas of socioeconomic deprivation or have Medicaid insurance.

Design, Setting, and Participants

This cohort study included patients with cancer who were 65 years or older and treated in SWOG Cancer Research Network trials from 1999 to 2018 using data linked to Medicare claims. Data were collected from 1999 to 2019 and analyzed from 2022 to 2024.

Main Outcomes and Measures

Outcomes were ED visits, HS, and costs in the first year following enrollment. Neighborhood socioeconomic deprivation was measured using patients' zip code linked to the Area Deprivation Index (ADI), measured on a 0 to 100 scale for increasing deprivation and categorized into tertiles (T1 to T3). Type of insurance was classified as Medicare with or without commercial insurance vs dual Medicare and Medicaid. Demographic, clinical, and prognostic factors were captured from trial records. Multivariable regression was used, and the association of ADI and insurance with each outcome was considered separately.

Results

In total, 3027 trial participants were analyzed. The median (range) age was 71 (65-98) years, 1280 (32.3%) were female, 221 (7.3%) were Black patients, 2717 (89.8%) were White patients, 90 (3.0%) had Medicare and Medicaid insurance, and 660 (22.3%) were in the areas of highest deprivation (ADI-T3). In all, 1094 patients (36.1%) had an ED visit and 983 patients (32.4%) had an HS. In multivariable generalized estimating equation, patients living in areas categorized as ADI-T3 were more likely to have an ED visit (OR, 1.34; 95% CI, 1.10-1.62; P = .004). A similar but nonsignificant pattern was observed for HS (OR, 1.36; 95% CI, 0.96-1.93; P = .08). Patients from areas with the highest deprivation had a 62% increase in risk of either an ED visit or HS (OR, 1.62; 95% CI, 1.25-2.09; P < .001). Patients with Medicare and Medicaid were 96% more likely to have an ED visit (OR, 1.96; 95% CI, 1.56-2.46; P < .001).

Conclusions and Relevance

In this cohort of older patients enrolled in clinical trials, neighborhood deprivation and economic disadvantage were associated with an increase in ED visits and HS. Efforts are needed to ensure adequate resources to prevent unplanned use of acute care in socioeconomically vulnerable populations.

Cost-effectiveness of lenvatinib plus pembrolizumab versus chemotherapy for recurrent mismatch repair-proficient endometrial cancer after platinum-based therapy

OBJECTIVE

The recent Study 309-KEYNOTE-775 showed improved survival for lenvatinib plus pembrolizumab compared to chemotherapy in patients with recurrent endometrial cancer. We created a decision model to compare the cost-effectiveness of lenvatinib plus pembrolizumab in patients with recurrent mismatch repair-proficient (pMMR) endometrial cancer who had progressed after first-line chemotherapy.

METHODS

A Markov model was created to simulate the clinical trajectory of 10,000 patients with recurrent pMMR endometrial cancer. The initial decision point in the model was treatment with ether lenvatinib plus pembrolizumab or chemotherapy (doxorubicin or dose-dense paclitaxel). Model probabilities, utility values and costs were derived with assumptions drawn from published literature. A cycle length of 3 months and a time horizon of 2 years was used. The effectiveness was calculated in terms of average quality adjusted life years (QALYs) gained. The primary outcome was incremental cost-effectiveness ratios (ICERs), expressed in 2020 US dollars/QALYs. One-way, two-way and probabilistic sensitivity analyses were performed.

RESULTS

Chemotherapy was the least costly strategy at $66,693 followed by lenvatinib plus pembrolizumab ($193,590). Lenvatinib plus pembrolizumab resulted in more patients being alive at 2 years (lenvatinib plus pembrolizumab: 367, chemotherapy: 109). Chemotherapy was cost-effective compared with lenvatinib plus pembrolizumab (ICER: $164,493/QALYs). Lenvatinib plus pembrolizumab became cost-effective when its cost was reduced by $1553 per month (7.8% reduction).

CONCLUSION

For patients with recurrent pMMR endometrial cancer Lenvatinib plus pembrolizumab is associated with greater survival but is more costly than chemotherapy. The cost of lenvatinib and pembrolizumab would have to be reduced by approximately 7% to be considered cost-effective.

Geographical distance predicts psychiatric treatment retention for Hispanic women with comorbid major depression and breast cancer

PURPOSE

Depression is among the most common comorbid psychiatric disorders of patients with breast cancer. Depression decreases patient quality of life and, if untreated, can adversely affect cancer treatment. We sought to identify treatment barriers for women with breast cancer receiving psychotherapy for depression. Findings may help policy makers and researchers determine funding and design of future studies involving this population, especially in communities with high rates of health disparities.

METHODS

We used data from a randomized trial for women with breast cancer and current DSM-IV non-psychotic unipolar major depressive disorder (MDD). Patients were randomly assigned to 12 weeks of one of three psychotherapies and attrition was assessed by whether subjects completed 12 weekly treatment sessions. We used descriptive analyses and logistic regression to identify treatment barriers. R shiny was used to determine study patient residences.

RESULTS

Of 134 randomized patients, 84 (62.7%) were Hispanic. Fifty-nine patients (44%) either did not start or dropped out of treatment, 49 (83.1%) of them being Hispanic. Being a Hispanic woman, less educated, and geographically distant from treatment significantly predicted attrition. Single Hispanic mothers had significantly higher attrition risk than married and/or childless women.

CONCLUSION

Identifying barriers to treatment is important to improve treatment adherence for patients with concurrent diagnoses of breast cancer and MDD, especially for traditionally underserved minorities. Additional support such as affordable tele-medicine, multi-language assistance, financial aid for transportation and child-care, and allocation of more funds to address some identified barriers deserve consideration to improve treatment adherence and outcomes.

Excess morbidity and mortality associated with underuse of estrogen replacement therapy in premenopausal women who undergo surgical menopause

BACKGROUND

Contrary to clinical guidelines, there has been a decrease over time in estrogen therapy use in premenopausal women undergoing bilateral oophorectomy for benign indications.

OBJECTIVE

This study aimed to estimate the excess morbidity and mortality associated with current patterns of estrogen therapy use in women who undergo bilateral oophorectomy with hysterectomy for benign indications.

STUDY DESIGN

We developed 2 Bayesian sampling Markov state-transition models to estimate the excess disease incidence (incidence model) and mortality (mortality model). The starting cohort for both models were women who had undergone bilateral oophorectomy with hysterectomy for benign indications at the age of 45 to 49 years. The models tracked outcomes in 5-year intervals for 25 years. The incidence model estimated excess incidence of breast cancer, lung cancer, colorectal cancer, coronary heart disease, and stroke, whereas the mortality model estimated excess mortality due to breast cancer, lung cancer, coronary heart disease, and all-other-cause mortality. The models compared current rates of estrogen therapy use with optimal (100%) use and calculated the mean difference in each simulated outcome to determine excess disease incidence and death.

RESULTS

By 25 years after bilateral oophorectomy with hysterectomy, there were an estimated 94 (95% confidence interval, -158 to -23) fewer colorectal cancer cases, 658 (95% confidence interval, 339-1025) more coronary heart disease cases, and 881 (95% confidence interval, 402-1483) more stroke cases. By 25 years after bilateral oophorectomy with hysterectomy, there were an estimated 189 (95% confidence interval, 59-387) more breast cancer deaths, 380 (95% confidence interval, 114-792) more coronary heart disease deaths, and 759 (95% confidence interval, 307-1527) more all-other-cause deaths. In sensitivity analyses where we defined estrogen therapy use as a duration of >2 years of use, these differences increased >2-fold.

CONCLUSION

Underuse of estrogen therapy in premenopausal women who undergo oophorectomy is associated with substantial excess morbidity and mortality.

Hospital Volume and Quality of Care for Emergency Gynecologic Care

OBJECTIVE

To evaluate the association between hospital volume and the quality of gynecologic emergency care for tubal ectopic pregnancies, ovarian torsion, and pelvic inflammatory disease (PID).

METHODS

In this cross-sectional analysis, we analyzed patients who presented for emergency care for tubal ectopic pregnancies, ovarian torsion, and PID using the Premier Healthcare Database from 2006 to 2020. We measured the following outcomes: methotrexate use for ectopic pregnancy, ovarian cystectomy for torsion, and guideline-based antibiotic use for PID. For each condition, we measured outlier hospitals that performed the above interventions at below the 10th percentile. Multivariable logistic regression models were used to analyze associations between outlier care and hospital factors such as annualized mean case volume, urban or rural location, teaching status, bed capacity, and geographic region, as well as hospital-level patient population factors, including age, insurance status, and race.

RESULTS

A total of 602 hospitals treated patients with tubal ectopic pregnancies, of which 21.9% were outliers, with no cases managed with methotrexate. Of 512 hospitals treating patients with ovarian torsion, 17.4% were outliers, with no cases managed with cystectomy. Of 929 hospitals that treated patients with PID, 9.9% were deemed outliers with low rates of guideline-adherent antibiotic administration. Low-volume hospitals were more likely to be outliers with low rates of use of methotrexate for ectopic pregnancy (6.7% of high-volume hospitals vs 49.7% of low-volume hospitals were outliers; adjusted odds ratio [aOR] 0.13, 95% CI, 0.05-0.31 for high-volume hospitals) and cystectomy for torsion (34.9% of low-volume vs 2.4% of high-volume hospitals were outliers; aOR 0.05, 95% CI, 0.01-0.18 for high-volume hospitals). There was no association between hospital volume and lower rates of guideline-based antibiotic use for PID.

CONCLUSION

Higher hospital volume is associated with use of conservative, fertility-preserving treatment of emergency gynecologic conditions, including ectopic pregnancy and ovarian torsion.

Levonorgestrel-releasing intrauterine device therapy versus oral progestin treatment for Reproductive-Aged patients with endometrial intraepithelial neoplasia: a systematic review and Meta-Analysis

BACKGROUND

We conducted a systematic review and meta-analysis to examine outcomes of patients with endometrial intraepithelial neoplasia (EIN) treated with oral progestins or levonorgestrel-releasing intrauterine device (LNG-IUD).

METHODS

We conducted a systematic review across five databases to examine outcomes of progestational treatment (oral progestins or LNG-IUD) for patients with EIN. The primary outcome was the best complete response (CR) rate within twelve months of primary progestational treatment. Sensitivity analyses were performed by removing studies with extreme effect sizes. Secondary outcomes included the pooled pregnancy rate.

RESULTS

We identified 21 eligible studies, including 824 premenopausal patients with EIN, for our meta-analysis. Among these, 459 patients received oral progestin, while 365 patients received LNG-IUD as a primary progestational treatment. The pooled best CR proportion within 12 months was 82% (95% CI, 69-91) following oral progestin treatment, and 95% (95% CI, 81-99) following LNG-IUD treatment. After removing outlier studies, the pooled proportion was 86% (95% CI, 75-92) for the oral progestin group, and 96% (95% CI, 91-99) for the LNG-IUD group, with reduced heterogeneity. The pooled pregnancy rate was 50% (95% CI, 35-65) after oral progestin and 35% (95% CI, 23-49) after LNG-IUD treatment.

CONCLUSIONS

This meta-analysis provides data on the effectiveness of oral progestins and LNG-IUD treatment within 12 months of treatment among premenopausal patients with EIN. Although based on small numbers, the rate of pregnancy after treatment is modest. These data may be beneficial for selecting progestational therapies that allow fertility preservation for patients with EIN.

Randomized adaptive selection trial of cryotherapy, compression therapy, and placebo to prevent taxane-induced peripheral neuropathy in patients with breast cancer

BACKGROUND

Chemotherapy-induced peripheral neuropathy (CIPN) is a common and debilitating adverse effect of taxane therapy. Small non-randomized studies in patients with early-stage breast cancer (ESBC) suggest both cryotherapy and compression therapy may prevent CIPN. It is unknown which is more effective.

METHODS

We conducted a randomized phase IIB adaptive sequential selection trial of cryotherapy vs. compression therapy vs. placebo ("loose" gloves/socks) during taxane chemotherapy. Participants were randomized in triplets. Garments were worn for 90-120 min, beginning 15 min prior and continuing for 15 min following the infusion. The primary goal was to select the best intervention based on a Levin-Robbins-Leu sequential selection procedure. The primary endpoint was a < 5-point decrease in the Functional Assessment of Cancer Therapy Neurotoxicity (FACT-NTX) at 12 weeks. An arm was eliminated if it had four or more fewer successes than the currently leading arm. Secondary endpoints included intervention adherence and patient-reported comfort/satisfaction.

RESULTS

Between April 2019 and April 2021, 63 patients were randomized (cryotherapy (20); compression (22); placebo (21)). Most patients (60.3%) were treated with docetaxel. The stopping criterion was met after the 17th triplet (n = 51) was evaluated; success at 12 weeks occurred in 11 (64.7%) on compression therapy, 7 (41.1%) on cryotherapy, and 7 (41.1%) on placebo. Adherence to the intervention was lowest with cryotherapy (35.0%) compared to compression (72.7%) and placebo (76.2%).

CONCLUSION

Compression therapy was the most effective intervention in this phase IIB selection trial to prevent CIPN and was well tolerated. Compression therapy for the prevention of CIPN should be evaluated in a phase III study.

CLINICAL TRIAL REGISTRATION

ClinicaTrials.gov Identifier: NCT03873272.

Black-White differences in uterine cancer symptomatology and stage at diagnosis

OBJECTIVE

To examine whether uterine cancer symptoms differ between Black and White patients and how this may influence their stage at diagnosis.

METHODS

Using the Surveillance, Epidemiology and End Results-Medicare database, we identified 2328 Black and 21,774 White patients with uterine cancer in 2008-2017. Their symptoms in the 18 months before diagnosis were categorized as postmenopausal bleeding (PMB) alone, PMB together with other symptoms (e.g., abdominal/pelvic pain, bloating), non-PMB symptoms alone, or no symptoms. Stage at diagnosis was dichotomized as advanced (i.e., regional/distant) versus localized. The association between race and stage was analyzed using regression models incrementally adjusting for symptoms and other patient characteristics.

RESULTS

A larger proportion of Black than White patients experienced PMB together with other symptoms (63.1% versus 58.0%) or experienced non-PMB symptoms alone (13.1% versus 9.4%) (p < 0.001). Black patients had a higher risk of advanced-stage diagnosis than White patients (45.0% versus 30.3%, unadjusted RR = 1.52, 95% CI: 1.44-1.59). Adjusting for Black-White differences in symptoms attenuated the RR to 1.46 (95% CI: 1.39-1.53). Compared to PMB symptoms alone, having additional non-PMB symptoms (RR = 1.21, 95% CI: 1.15-1.26) and having non-PMB symptoms alone (RR = 1.99, 95% CI: 1.88-2.10) were associated with increased risk of advanced-stage diagnosis. Further adjusting for histology and other patient characteristics reduced Black-White disparity in advanced-stage diagnosis to 1.08 (95% CI: 1.03-1.14) but symptoms remained significantly associated with stage at diagnosis.

CONCLUSIONS

Having non-PMB symptoms was associated with more advanced stage at diagnosis. Non-PMB symptoms were more common among Black than White patients, which might hinder symptom recognition/evaluation.

Estrogen replacement therapy and non-hormonal medication use among patients with uterine cancer

OBJECTIVE

As the prognosis for endometrial cancer is excellent, management of the effects of estrogen deprivation has an important influence on quality of life. We examined the trends in the use of estrogen replacement therapy (ERT) and non-hormonal medications among patients with uterine cancer following surgery.

METHODS

The MarketScan Database was used to identify patients 18-49 years who underwent hysterectomy plus oophorectomy and those aged 50-75 years who underwent hysterectomy between 2008 and 2020. ERT and non-hormonal treatments of menopause were identified preoperatively and postoperatively. After propensity score balancing, difference-in-differences (DID) analyses were performed to compare the pre-and-postoperative changes in ERT and non-hormonal medication use between groups. The trends in postoperative use of ERT were assessed and tested using Cochran-Armitage trend tests.

RESULTS

A total of 19,700 patients with uterine cancer and 185,150 controls were identified. Overall, postoperative ERT use decreased for both age groups and for patients with and without uterine cancer. The DID in ERT use between those with uterine cancer and those with benign pathology after hysterectomy was -37.1% (95% CI, -40.5 to -33.6%) for patients 18-49 years of age and - 10.4% (95% CI, -10.9 to -9.9%) for those 50-75 years. The DID for non-hormonal medication use between those with uterine cancer and those with benign pathology after hysterectomy was 11.2% (95% CI, 7.8 to 14.7%) for younger patients and 3.4% (95% CI, 2.9 to 4.0%) for those 50-75 years. The postoperative new ERT use has been declining over time in patients with uterine cancer in those 18-49 years of age (P = .02) and those 50-75 years of age (P < .001).

CONCLUSIONS

The use of ERT is uncommon and has declined over time in patients with uterine cancer. Conversely, non-hormonal medications are more commonly used among patients with uterine cancer.

Association Between Copayment Assistance, Insurance Type, Prior Authorization, and Time to Receipt of Oral Anticancer Drugs

PURPOSE

Oral anticancer drugs (OACDs) have become increasingly prevalent over the past decade. OACD prescriptions require coordination between payers and providers, which can delay drug receipt. We examined the association between insurance type, pursuit of copayment assistance, pursuit of prior authorization (PA), and time to receipt (TTR) for new OACD prescriptions.

METHODS

We prospectively collected data on new OACD prescriptions for adult oncology patients from January 1, 2018, to December 31, 2019, including demographic and clinical characteristics, insurance type, and pursuit of PA and copayment assistance. TTR was defined as the number of days from prescription to OACD receipt. We summarized TTR using cumulative incidence and compared TTR by insurance type, pursuit of copayment assistance, and PA activity using the log-rank test.

RESULTS

Our cohort of 1,024 patients was 53% male, and 40% were younger than 65. Twenty-six percent had commercial insurance only, 16% had Medicaid only, and 59% had Medicare with or without additional insurance. Eighty-six percent of prescriptions were successfully received. Across all prescriptions, 69% involved PA activity, and 21% involved the copayment assistance process. In unadjusted analyses, prescriptions involving the copayment assistance process had longer TTR compared with those not involving assistance (log-rank P value = .005) and OACDs covered by Medicare/commercial insurance had a longer TTR compared with Medicaid (log-rank P value = .006). The PA process was not associated with TTR (log-rank P value = .124).

CONCLUSION

The process for obtaining OACDs is complex. The copayment assistance process and Medicare/commercial insurance are associated with delayed TTR. New policies are needed to reduce time to OACD receipt.

Disparities with influenza vaccine use in long-term survivors of metastatic breast cancer

PURPOSE

Elderly women diagnosed with metastatic breast cancer (MBC) are living longer, however their primary care management may be sub-optimal. Influenza results in preventable hospitalizations and deaths. Guidelines recommend the influenza vaccine for those > 65 years and those with cancer but use is unknown.

METHODS

A retrospective analysis was conducted using the Surveillance, Epidemiology, and End Results (SEER)-Medicare linked data. Patients were included if they were diagnosed with MBC from 1/1/2008-12/31/2017 and were ≥ 65 years of age. The primary outcome was influenza vaccine use among patients surviving ≥ 3-years. We conducted multivariable analyses using demographic and clinical factors to identify associations with vaccine use. We compared utilization to cancer-free controls.

RESULTS

We identified 1,970 patients with MBC that survived for ≥ 3 years. The median age at diagnosis was 73 years. Furthermore, 1,742 (88%) patients were White, and 153 (8%) patients were Black. Only 1,264 (64%) received an influenza vaccine at least one time and 51% received the vaccine at least two times. A multivariable model found lower odds of vaccine receipt for Black patients (OR = 0.48; 95% CI 0.34-0.68, p < 0.001) and higher odds for patients that saw primary care in the year prior to diagnosis (OR = 1.91, 95% CI 1.57-2.33, p < 0.001). Patients with MBC had lower odds of vaccine use compared to cancer free controls (OR = 0.85, 95% CI 0.74-0.97, p < 0.001).

CONCLUSION

Over 1/3 of long-term MBC survivors in our cohort did not receive the influenza vaccine. Black patients are about half as likely to be vaccinated. Given the known benefit of the vaccine, improving uptake could be an important strategy to improve outcomes.

A Brief Screening Tool for Assessment of Financial Toxicity

OBJECTIVES

To explore the utility of brief financial screening items to facilitate the implementation of routine financial toxicity screening.

SAMPLE & SETTING

50 women with breast cancer completed a one-time survey that included the Comprehensive Score for Financial Toxicity (COST): A FACIT Measure of Financial Toxicity, a visual analog scale, and a brief sociodemographic questionnaire.

METHODS & VARIABLES

Survey responses were examined to assess the psychometric properties of individual COST items and the visual analog scale by calculating Cronbach's alpha and Pearson's correlation coefficients.

RESULTS

The mean COST was 21.4, and 27 respondents met criteria for financial toxicity (a COST lower than 22). As expected, all items correlated strongly to the overall COST, but four items (items 3, 6, 8, and 10) performed strongest (r > 0.8).

IMPLICATIONS FOR NURSING

This study provides evidence for individual COST items to be used as brief screening items. Future research should test the utility of these items in larger sample sizes with a more diverse representation of patients by age, race, ethnicity, and tumor type and stage.

Effect of Metformin Versus Placebo on New Primary Cancers in Canadian Cancer Trials Group MA.32: A Secondary Analysis of a Phase III Randomized Double-Blind Trial in Early Breast Cancer

Clinical trials frequently include multiple end points that mature at different times. The initial report, typically based on the primary end point, may be published when key planned coprimary or secondary analyses are not yet available. Clinical trial updates provide an opportunity to disseminate additional results from studies, published in JCO or elsewhere, for which the primary end point has already been reported.Metformin has been associated with lower cancer risk in epidemiologic and preclinical research. In the MA.32 randomized adjuvant breast cancer trial, metformin (v placebo) did not affect invasive disease-free or overall survival. Here, we report metformin effects on the risk of new cancer. Between 2010 and 2013, 3,649 patients with breast cancer younger than 75 years without diabetes with high-risk T1-3, N0-3 M0 breast cancer (any estrogen receptor, progesterone receptor, human epidermal growth factor receptor 2) were randomly assigned to metformin 850 mg orally twice a day or placebo twice a day for 5 years. New primary invasive cancers (outside the ipsilateral breast) developing as a first event were identified. Time to events was described by the competing risks method; two-sided likelihood ratio tests adjusting for age, BMI, smoking, and alcohol intake were used to compare metformin versus placebo arms. A total of 184 patients developed new invasive cancers: 102 metformin and 82 placebo, hazard ratio (HR), 1.25; 95% CI, 0.94 to 1.68; P = .13. These included 48 contralateral invasive breast cancers (27 metformin v 21 placebo), HR, 1.29; 95% CI, 0.72 to 2.27; P = .40 and 136 new nonbreast primary cancers (75 metformin v 61 placebo), HR, 1.24; 95% CI, 0.88 to 1.74; P = .21. Metformin did not reduce the risk of new cancer development in these nondiabetic patients with breast cancer.

Intervention Nonadherence in the TrACER (S1415CD) Study: A Pragmatic Randomized Trial of a Standardized Order Entry for CSF Prescribing

PURPOSE

We conducted a pragmatic, cluster-randomized trial to test whether a guideline-based standing order entry (SOE) improves use of primary prophylactic CSF (PP-CSF) prescribing for patients receiving myelosuppressive chemotherapy. We investigated variability in adherence to the intervention.

METHODS

We conducted a cluster-randomized trial among 32 oncology clinics from the NCI Community Oncology Research Program. Clinics were randomized 3:1 to a guideline-based PP-CSF SOE or usual care. Among SOE sites, automated orders for PP-CSF were included for regimens at high risk for febrile neutropenia (FN) and an alert not to use PP-CSF for low FN risk. A secondary 1:1 randomization was done among intervention sites to either SOE to prescribe or an alert to not prescribe PP-CSF for patients receiving intermediate risk-regimens. Providers were allowed to override the SOE.

RESULTS

Overall, PP-CSF use among patients receiving high FN risk treatment was high and not different between arms; however, rates of PP-CSF use varied widely by site, ranging from 48.6% to 100%. Among those receiving low FN risk regimens, PP-CSF use was low and not different between arms; however, PP-CSF use ranged from 0% to 19.4% across sites. In the intermediate-risk substudy, PP-CSF was five-fold higher among sites randomized to SOE; however, there was considerable variability in adherence to intervention assignment: PP-CSF use ranged from 0% to 75% among sites randomized to SOE. Despite an alert to not prescribe, PP-CSF prescribing ranged from 0% to 33%.

CONCLUSION

In this randomized pragmatic trial aimed at improving PP-CSF prescribing, there was substantial variability in site adherence to the intervention assignment. Although the ability to opt out of the intervention is a feature of pragmatic trials, planning to estimate nonadherence is critical to ensure adequate power.

Randomized Trial of Exercise and Nutrition on Chemotherapy Completion and Pathologic Complete Response in Women With Breast Cancer: The Lifestyle, Exercise, and Nutrition Early After Diagnosis Study

PURPOSE

Successful completion of chemotherapy is critical to improve breast cancer outcomes. Relative dose intensity (RDI), defined as the ratio of chemotherapy delivered to prescribed, is a measure of chemotherapy completion and is associated with cancer mortality. The effect of exercise and eating a healthy diet on RDI is unknown. We conducted a randomized trial of an exercise and nutrition intervention on RDI and pathologic complete response (pCR) in women diagnosed with breast cancer initiating chemotherapy.

METHODS

One hundred seventy-three women with stage I-III breast cancer were randomly assigned to usual care (UC; n = 86) or a home-based exercise and nutrition intervention with counseling sessions delivered by oncology-certified registered dietitians (n = 87). Chemotherapy dose adjustments and delays and pCR were abstracted from electronic medical records. T-tests and chi-square tests were used to examine the effect of the intervention versus UC on RDI and pCR.

RESULTS

Participants randomly assigned to intervention had greater improvements in exercise and diet quality compared with UC (P < .05). RDI was 92.9% ± 12.1% and 93.6% ± 11.1% for intervention and UC, respectively (P = .69); the proportion of patients in the intervention versus UC who achieved ≥85% RDI was 81% and 85%, respectively (P = .44). The proportion of patients who had at least one dose reduction and/or delay was 38% intervention and 36% UC (P = .80). Among 72 women who received neoadjuvant chemotherapy, women randomly assigned to intervention were more likely to have a pCR than those randomly assigned to UC (53% v 28%; P = .037).

CONCLUSION

Although a diet and exercise intervention did not affect RDI, the intervention was associated with a higher pCR in patients with hormone receptor-positive/human epidermal growth factor receptor 2-negative and triple-negative breast cancer undergoing neoadjuvant chemotherapy.

Clinical characteristics, racial inequities, and outcomes in patients with breast cancer and COVID-19: A COVID-19 and cancer consortium (CCC19) cohort study

Background

Limited information is available for patients with breast cancer (BC) and coronavirus disease 2019 (COVID-19), especially among underrepresented racial/ethnic populations.

Methods

This is a COVID-19 and Cancer Consortium (CCC19) registry-based retrospective cohort study of females with active or history of BC and laboratory-confirmed severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection diagnosed between March 2020 and June 2021 in the US. Primary outcome was COVID-19 severity measured on a five-level ordinal scale, including none of the following complications, hospitalization, intensive care unit admission, mechanical ventilation, and all-cause mortality. Multivariable ordinal logistic regression model identified characteristics associated with COVID-19 severity.

Results

1383 female patient records with BC and COVID-19 were included in the analysis, the median age was 61 years, and median follow-up was 90 days. Multivariable analysis revealed higher odds of COVID-19 severity for older age (aOR per decade, 1.48 [95% CI, 1.32-1.67]); Black patients (aOR 1.74; 95 CI 1.24-2.45), Asian Americans and Pacific Islander patients (aOR 3.40; 95 CI 1.70-6.79) and Other (aOR 2.97; 95 CI 1.71-5.17) racial/ethnic groups; worse ECOG performance status (ECOG PS ≥2: aOR, 7.78 [95% CI, 4.83-12.5]); pre-existing cardiovascular (aOR, 2.26 [95% CI, 1.63-3.15])/pulmonary comorbidities (aOR, 1.65 [95% CI, 1.20-2.29]); diabetes mellitus (aOR, 2.25 [95% CI, 1.66-3.04]); and active and progressing cancer (aOR, 12.5 [95% CI, 6.89-22.6]). Hispanic ethnicity, timing, and type of anti-cancer therapy modalities were not significantly associated with worse COVID-19 outcomes. The total all-cause mortality and hospitalization rate for the entire cohort was 9% and 37%, respectively however, it varied according to the BC disease status.

Conclusions

Using one of the largest registries on cancer and COVID-19, we identified patient and BC-related factors associated with worse COVID-19 outcomes. After adjusting for baseline characteristics, underrepresented racial/ethnic patients experienced worse outcomes compared to non-Hispanic White patients.

Funding

This study was partly supported by National Cancer Institute grant number P30 CA068485 to Tianyi Sun, Sanjay Mishra, Benjamin French, Jeremy L Warner; P30-CA046592 to Christopher R Friese; P30 CA023100 for Rana R McKay; P30-CA054174 for Pankil K Shah and Dimpy P Shah; KL2 TR002646 for Pankil Shah and the American Cancer Society and Hope Foundation for Cancer Research (MRSG-16-152-01-CCE) and P30-CA054174 for Dimpy P Shah. REDCap is developed and supported by Vanderbilt Institute for Clinical and Translational Research grant support (UL1 TR000445 from NCATS/NIH). The funding sources had no role in the writing of the manuscript or the decision to submit it for publication.

Clinical trial number

CCC19 registry is registered on ClinicalTrials.gov, NCT04354701.

Medicaid Expansion of the Patient Protection and Affordable Care Act and Participation of Patients With Medicaid in Cancer Clinical Trials

Importance

The Patient Protection and Affordable Care Act (ACA) Medicaid expansion resulted in increased use of Medicaid insurance nationwide. However, the association between Medicaid expansion and access to clinical trials has not been examined to date.

Objective

To examine whether the implementation of ACA Medicaid expansion was associated with increased participation of patients with Medicaid insurance in cancer clinical trials.

Design, Setting, and Participants

Data for this cohort study of 51 751 patients were from the SWOG Cancer Research Network. All patients aged 18 to 64 years and enrolled in treatment trials with Medicaid or private insurance between April 1, 1992, and February 29, 2020, were included. Interrupted time-series analysis with segmented logistic regression was used. The monthly unemployment rate and presidential administration were adjusted to reflect potential differences in Medicaid use associated with economic conditions and national administrative policies, respectively. Data analysis was conducted between June 22, 2021, and August 5, 2022.

Exposure

Implementation of Medicaid expansion on January 1, 2014, was the independent exposure variable.

Main Outcomes and Measures

The number and proportion of patients by insurance type enrolled in cancer clinical trials over time were analyzed.

Results

Overall, data for 51 751 patients were analyzed. Mean (SD) age was 50.6 (9.8) years, 67.3% of patients were female, 41.1% were younger than 50 years, and 9.1% used Medicaid. A 19% annual increase (odds ratio [OR], 1.19; 95% CI, 1.11-1.28; P < .001) was identified in the odds of patients using Medicaid after the ACA Medicaid expansion, resulting in a 52% increase (OR, 1.52; 95% CI, 1.29-1.78; P < .001) compared with what was expected in the number of Medicaid patients enrolled over time. The association was greater in states that adopted Medicaid expansion in 2014 to 2015 (OR, 1.26; 95% CI, 1.15-1.38; P < .001) compared with other states (OR, 1.08; 95% CI, 0.96-1.21; P = .20; P = .04 for interaction). By February 2020, the proportion of patients with Medicaid insurance was 17.8% (95% CI, 15.0%-20.8%; P < .001), whereas the expected proportion had ACA Medicaid expansion not occurred was 6.9% (95% CI, 4.4%-10.3%; P < .001).

Conclusions and Relevance

Findings suggest that implementation of ACA Medicaid expansion was associated with increased participation of patients using Medicaid in cancer clinical trials. Improved participation in clinical trials for Medicaid-insured patients is critical for socioeconomically vulnerable patients seeking access to the newest treatments available in trials and for improving confidence that trial findings apply to patients of all backgrounds.

Universal Viral Screening of Patients with Newly Diagnosed Cancer in the United States: A Cost-efficiency Evaluation

Recommendations for universal screening of patients with cancer for hepatitis B virus (HBV), hepatitis C virus (HCV), and human immunodeficiency virus (HIV) are inconsistent. A recent multisite screening study (S1204) from the SWOG Cancer Research Network found that a substantial number of patients with newly diagnosed cancer had previously unknown viral infections. The objective of this study was to determine the cost-efficiency of universal screening of patients with newly diagnosed cancer. We estimated the cost-efficiency of universal screening of new cancer cases for HBV, HCV, or HIV, expressed as cost per virus detected, from the health care payer perspective. The prevalence of each virus among this cohort was derived from S1204. Direct medical expenditures included costs associated with laboratory screening tests. Costs per case detected were estimated for each screening strategy. Secondary analysis examined the cost-efficiency of screening patients whose viral status at cancer diagnosis was unknown. Among the possible options for universal screening, screening for HBV alone ($581), HCV alone ($782), HBV and HCV ($631) and HBV, HCV, and HIV ($841) were most efficient in terms of cost per case detected. When screening was restricted to patients with unknown viral status, screening for HBV alone ($684), HBV and HCV ($872), HBV and HIV ($1,157), and all three viruses ($1,291) were most efficient in terms of cost per newly detected case. Efficient viral testing strategies represent a relatively modest addition to the overall cost of managing a patient with cancer. Screening for HBV, HCV, and HIV infections may be reasonable from both a budget and clinical standpoint.

SIGNIFICANCE

Screening patients with cancer for HBV, HCV, and HIV is inconsistent in clinical practice despite national recommendations and known risks of complications from viral infection. Our study shows that while costs of viral screening strategies vary by choice of tests, they present a modest addition to the cost of managing a patient with cancer.

Impact of treatment experience on patient knowledge of colony-stimulating factors among patients receiving cancer chemotherapy: evidence from S1415CD-a large pragmatic trial

PURPOSE

Primary prophylactic granulocyte colony-stimulating factors (PP-CSFs) are prescribed alongside chemotherapy regimens that carry a significant risk of febrile neutropenia (FN). As part of S1415CD, a prospective, pragmatic trial evaluating the impact of automated orders to improve PP-CSF prescribing, we evaluated patients' baseline knowledge of PP-CSF and whether that knowledge improved following the first cycle of chemotherapy.

METHODS

Adult patients with breast, colorectal, or non-small-cell lung cancer initiating chemotherapy were enrolled in S1415CD between January 2016 and April 2020. Eight questions assessing knowledge of CSF indications, risks, benefits, and out-of-pocket costs were included in a baseline survey and in a follow-up survey at the end of the first cycle of chemotherapy. Responses were stratified by the trial arm and whether chemotherapy was low, intermediate, or high FN risk.

RESULTS

Of the 3605 eligible patients, 3580 (99.3%) completed the baseline survey, and 3420 (95.5%) completed the follow-up survey. At baseline, 803 (22.4%) patients responded "Don't know" to all 8 questions, and all patients averaged 2.75 correct questions. At follow-up, knowledge increased by 0.34 in the high-FN-risk group (p < 0.001) but declined for the other FN-risk groups. In multivariate analysis, receiving a high-FN-risk regimen and younger age were significantly associated with knowledge improvement.

CONCLUSION

Chemotherapy patients had poor knowledge of PP-CSF that improved only modestly among recipients of high-FN-risk chemotherapy. Further efforts to inform patients about the risks, benefits, and costs of PP-CSF may be warranted, particularly for those in whom prophylaxis is indicated.

TRIAL REGISTRATION

NCT02728596, April 6, 2016.

Association Between Oncology Clinical Pathway Utilization and Toxicity and Cost Outcomes in Patients With Metastatic Solid Tumors

PURPOSE

This retrospective observational study compared cancer care toxicity and cost outcomes for patients with metastatic cancer with nine different cancer types prescribed on- versus off-pathway regimens.

METHODS

This study used claims and authorization data from a national insurer between January 1, 2018, and October 31, 2021. Participants included adults with metastatic breast, lung, colorectal, pancreatic, melanoma, kidney, bladder, gastric, or uterine cancer, who were prescribed first-line anticancer regimens. Multivariable regressions were used to assess outcomes including counts of emergency room visits or hospitalizations, use of supportive care medications, immune-related adverse events (IRAEs), and health care costs.

RESULTS

Of the 8,357 patients in the study, 5,453 (65.3%) were prescribed on-pathway regimens. The on-pathway proportion trended downward, from 74.3% in 2018 to 59.8% in 2021. The on- and off-pathway groups had a similar proportion of patients with treatment-related hospitalization (adjusted odds ratio [aOR], 1.080; P = .201) and IRAEs (aOR, 0.961; P = .497). More all-cause hospitalizations (aOR, 1.679; P = .013) were observed among patients with melanoma treated on-pathway. The on-pathway group had higher use of supportive care drugs in bladder cancer (aOR, 4.602; P < .001) and colorectal cancer (aOR, 4.465; P < .001), and lower use in breast (aOR, 0.668; P = .001) and lung cancer (aOR, 0.550; P < .001). On average, on-pathway patients incurred $17,589 less total health care cost (P < .001), and $22,543 lower chemotherapy cost (P < .001) than those from the off-pathway group.

CONCLUSION

Our findings suggest that use of on-pathway regimens was associated with significant cost savings. Toxicity outcomes were variable by disease, but overall, there were similar numbers of treatment-related hospitalizations and IRAEs compared to off-pathway regimens. This cross-institutional study provides evidence to support the use of clinical pathway regimens for patients with metastatic cancer.

Assessment of financial screening and navigation capabilities at National Cancer Institute community oncology clinics

BACKGROUND

Cancer-related financial hardship is a side effect of cancer diagnosis and treatment, and affects both patients and caregivers. Although many oncology clinics have increased financial navigation services, few have resources to proactively provide financial counseling and assistance to families affected by cancer before financial hardship occurs. As part of an ongoing randomized study testing a proactive financial navigation intervention, S1912CD, among sites of the National Cancer Institute Community Oncology Research Program (NCORP), we conducted a baseline survey to learn more about existing financial resources available to patients and caregivers.

METHODS

The NCORP sites participating in the S1912CD study completed a required 10-question survey about their available financial resources and an optional 5-question survey that focused on financial screening and navigation workflow and challenges prior to starting recruitment. The proportion of NCORP sites offering financial navigation services was calculated and responses to the optional survey were reviewed to determine current screening and navigation practices and identify any challenges.

RESULTS

Most sites (96%) reported offering financial navigation for cancer patients. Sites primarily identified patients needing financial assistance through social work evaluations (78%) or distress screening tools (76%). Sites revealed challenges in addressing financial needs at the outset and through diagnosis, including lack of proactive screening and referral to financial navigation services as well as staffing challenges.

CONCLUSIONS

Although most participating NCORP sites offer some form of financial assistance, the survey data enabled identification of gaps and challenges in providing services. Utilizing community partners to deliver comprehensive financial navigation guidance to cancer patients and caregivers may help meet needs while reducing site burden.

Randomized Phase II Trial of Endocrine Therapy With or Without Ribociclib After Progression on Cyclin-Dependent Kinase 4/6 Inhibition in Hormone Receptor-Positive, Human Epidermal Growth Factor Receptor 2-Negative Metastatic Breast Cancer: MAINTAIN Trial

PURPOSE

Cyclin-dependent kinase 4/6 inhibitor (CDK4/6i) with endocrine therapy (ET) improves progression-free survival (PFS) and overall survival (OS) in hormone receptor-positive (HR+), human epidermal growth factor receptor 2-negative (HER2-) metastatic breast cancer (MBC). Although preclinical and clinical data demonstrate a benefit in changing ET and continuing a CDK4/6i at progression, no randomized prospective trials have evaluated this approach.

METHODS

In this investigator-initiated, phase II, double-blind placebo-controlled trial in patients with HR+/HER2- MBC whose cancer progressed during ET and CDK4/6i, participants switched ET (fulvestrant or exemestane) from ET used pre-random assignment and randomly assigned 1:1 to the CDK4/6i ribociclib versus placebo. PFS was the primary end point, defined as time from random assignment to disease progression or death. Assuming a median PFS of 3.8 months with placebo, we had 80% power to detect a hazard ratio (HR) of 0.58 (corresponding to a median PFS of at least 6.5 months with ribociclib) with 120 patients randomly assigned using a one-sided log-rank test and significance level set at 2.5%.

RESULTS

Of the 119 randomly assigned participants, 103 (86.5%) previously received palbociclib and 14 participants received ribociclib (11.7%). There was a statistically significant PFS improvement for patients randomly assigned to switched ET plus ribociclib (median, 5.29 months; 95% CI, 3.02 to 8.12 months) versus switched ET plus placebo (median, 2.76 months; 95% CI, 2.66 to 3.25 months) HR, 0.57 (95% CI, 0.39 to 0.85); P = .006. At 6 and 12 months, the PFS rate was 41.2% and 24.6% with ribociclib, respectively, compared with 23.9% and 7.4% with placebo.

CONCLUSION

In this randomized trial, there was a significant PFS benefit for patients with HR+/HER2- MBC who switched ET and received ribociclib compared with placebo after previous CDK4/6i and different ET.

Mi Vida Saludable: Content Validity and Reliability of The Preferences and Self-Efficacy of Diet and Physical Activity Behaviors Questionnaire for Latina Women (PSEDPALW) for Cancer Survivors

The purpose of this study is to conduct validity and reliability testing of a new instrument, the Preferences and Self-Efficacy of Diet and Physical Activity Behaviors Questionnaire for Latina Women (PSEDPALW), which is for women who identify as Latina and are breast cancer survivors. PSEDPALW measures preferences and self-efficacy for four behaviors: physical activity (PA), fruit and vegetable (FV) intake, dietary fat (DF) intake, and added sugar (AS) intake (eight scales in total). Validity testing was conducted through an expert panel review and a cognitive interviewing focus group (n = 4). Reliability was tested via internal consistency reliability (n = 118) and test-retest reliability (n = 30). Validity testing was used to refine PSEDPALW. Reliability testing was conducted on three versions with 104, 47, and 41 items. PA scales had acceptable Cronbach's α (>0.70) but low ICC (NS). FV and DF scales had acceptable Cronbach's α (>0.70), with preferences for the shorter (47- and 41-item) versions (Cronbach's α < 0.70), and all scales had moderate ICC (p < 0.05, except the FV scale on the 104-item version (p = 0.07)). The AS preferences scale had Cronbach's α < 0.70, with self-efficacy > 0.70 for all versions and ICC moderate for all versions (p ≤ 0.01). PSEDPALW may be useful to assess diet and physical activity preferences and self-efficacy in theory-based diet and physical activity interventions in women who identify as Latina and are breast cancer survivors.

National Estimates of Gender-Affirming Surgery in the US

Importance

While changes in federal and state laws mandating coverage of gender-affirming surgery (GAS) may have led to an increase in the number of annual cases, comprehensive data describing trends in both inpatient and outpatient procedures are limited.

Objective

To examine trends in inpatient and outpatient GAS procedures in the US and to explore the temporal trends in the types of GAS performed across age groups.

Design, Setting, and Participants

This cohort study includes data from 2016 to 2020 in the Nationwide Ambulatory Surgery Sample and the National Inpatient Sample. Patients with diagnosis codes for gender identity disorder, transsexualism, or a personal history of sex reassignment were identified, and the performance of GAS, including breast and chest procedures, genital reconstructive procedures, and other facial and cosmetic surgical procedures, were identified.

Main Outcome Measures

Weighted estimates of the annual number of inpatient and outpatient procedures performed and the distribution of each class of procedure overall and by age were analyzed.

Results

A total of 48 019 patients who underwent GAS were identified, including 25 099 (52.3%) who were aged 19 to 30 years. The most common procedures were breast and chest procedures, which occurred in 27 187 patients (56.6%), followed by genital reconstruction (16 872 [35.1%]) and other facial and cosmetic procedures (6669 [13.9%]). The absolute number of GAS procedures rose from 4552 in 2016 to a peak of 13 011 in 2019 and then declined slightly to 12 818 in 2020. Overall, 25 099 patients (52.3%) were aged 19 to 30 years, 10 476 (21.8%) were aged 31 to 40, and 3678 (7.7%) were aged12 to 18 years. When stratified by the type of procedure performed, breast and chest procedures made up a greater percentage of the surgical interventions in younger patients, while genital surgical procedures were greater in older patients.

Conclusions and Relevance

Performance of GAS has increased substantially in the US. Breast and chest surgery was the most common group of procedures performed. The number of genital surgical procedures performed increased with increasing age.

Development of cardiometabolic risk factors following endocrine therapy in women with breast cancer

PURPOSE

Studies comparing the effect of aromatase inhibitor (AI) and tamoxifen use on cardiovascular disease (CVD) risk factors in hormone receptor-positive breast cancer (BC) survivors report conflicting results. We examined associations of endocrine therapy use with incident diabetes, dyslipidemia, and hypertension.

METHODS

The Pathways Heart Study examines cancer treatment exposures with CVD-related outcomes in Kaiser Permanente Northern California members with BC. Electronic health records provided sociodemographic and health characteristics, BC treatment, and CVD risk factor data. Hazard ratios (HR) and 95% confidence intervals (CI) of incident diabetes, dyslipidemia, and hypertension in hormone receptor-positive BC survivors using AIs or tamoxifen compared with survivors not using endocrine therapy were estimated using Cox proportional hazards regression models adjusted for known confounders.

RESULTS

In 8985 BC survivors, mean baseline age and follow-up time was 63.3 and 7.8 years, respectively; 83.6% were postmenopausal. By treatment, 77.0% used AIs, 19.6% used tamoxifen, and 16.0% used neither. Postmenopausal women who used tamoxifen had an increased rate (HR 1.43, 95% CI 1.06-1.92) of developing hypertension relative to those who did not use endocrine therapy. Tamoxifen use was not associated with incident diabetes, dyslipidemia, or hypertension in premenopausal BC survivors. Postmenopausal AI users had higher hazard rates of developing diabetes (HR 1.37, 95% CI 1.05-1.80), dyslipidemia (HR 1.58, 95% CI 1.29-1.92), and hypertension (HR 1.50, 95% CI 1.24-1.82) compared with non-endocrine therapy users.

CONCLUSION

Hormone receptor-positive BC survivors treated with AIs may have higher rates of developing diabetes, dyslipidemia, and hypertension over an average 7.8 years post-diagnosis.

Patterns of cervical cancer screening follow-up in the era of prolonged screening intervals

INTRODUCTION

Little is known as to how prolonged screening recommendations for cervical cancer have affected compliance.

OBJECTIVE

We examined compliance with repeat cervical cancer screening among U.S. women aged 30-64 who underwent index screening between 2013 and 2019.

STUDY DESIGN

The IBM Watson Health MarketScan Database was used to identify commercially-insured women 30-64 years old who underwent cervical cancer screening from 2013 to 2019. The cohort was limited to women with continuous insurance 12 months before and ≥ 2 months after index testing. Patients with prior hysterectomy, more frequent surveillance needs, or a history of abnormal cytology, histology, or HPV test were excluded. Index screening included cytology, co-testing, or primary HPV testing. Cumulative incidence curves described screening intervals. Compliance was considered if repeat screening occurred 2.5-4 years after index cytology and 4.5-6 years after index co-testing. Cause-specific hazard models examined factors associated with compliance.

RESULTS

Of 5,368,713 patients identified, co-testing was performed in 2,873,070 (53.5%), cytology in 2,422,480 (45.1%), and primary HPV testing in 73,163 (1.4%). The cumulative incidence of repeat screening among all women by seven years was 81.9%. Of those who underwent repeat screening, 85.7% with index cytology and 96.6% with index co-testing were rescreened early. Only, 12.2% with index cytology had appropriate rescreening and 2.1% had delayed rescreening. Among the index co-testing group, 3.2% had appropriate rescreening and 0.3% had delayed rescreening.

CONCLUSION

Appropriate cervical cancer follow-up screening is highly variable. The cumulative incidence rate of repeat screening was 81.9% and among women rescreened, the vast majority are tested earlier than recommended by current guidelines.

Risk prediction of hepatitis B or C or HIV among newly diagnosed cancer patients

BACKGROUND

Screening for viral infection in cancer patients is inconsistent. A mechanism to readily identify cancer patients at increased risk of existing or prior viral infection could enhance screening efforts while reducing costs.

METHODS

We identified factors associated with increased risk of past or chronic hepatitis virus B, hepatitis virus C, or HIV infection before initiation of systemic cancer therapy. Data were from a multicenter prospective cohort study of 3051 patients with newly diagnosed cancer (SWOG-S1204) enrolled between 2013 and 2017. Patients completed a survey with questions pertaining to personal history and behavioral, socioeconomic, and demographic risk factors for viral hepatitis or HIV. We derived a risk model to predict the presence of viral infection in a random set of 60% of participants using best subset selection. The derived model was validated in the remaining 40% of participants. Logistic regression was used.

RESULTS

A model with 7 risk factors was identified, and a risk score with 4 levels was constructed. In the validation cohort, each increase in risk level was associated with a nearly threefold increased risk of viral positivity (odds ratio = 2.85, 95% confidence interval = 2.26 to 3.60, P < .001). Consistent findings were observed for individual viruses. Participants in the highest risk group (with >3 risk factors), comprised of 13.4% of participants, were 18 times more likely to be viral positive compared with participants with no risk factors (odds ratio = 18.18, 95% confidence interval = 8.00 to 41.3, P < .001).

CONCLUSIONS

A risk-stratified screening approach using a limited set of questions could serve as an effective strategy to streamline screening for individuals at increased risk of viral infection.

A Transcriptome-Based Precision Oncology Platform for Patient-Therapy Alignment in a Diverse Set of Treatment-Resistant Malignancies

Predicting in vivo response to antineoplastics remains an elusive challenge. We performed a first-of-kind evaluation of two transcriptome-based precision cancer medicine methodologies to predict tumor sensitivity to a comprehensive repertoire of clinically relevant oncology drugs, whose mechanism of action we experimentally assessed in cognate cell lines. We enrolled patients with histologically distinct, poor-prognosis malignancies who had progressed on multiple therapies, and developed low-passage, patient-derived xenograft models that were used to validate 35 patient-specific drug predictions. Both OncoTarget, which identifies high-affinity inhibitors of individual master regulator (MR) proteins, and OncoTreat, which identifies drugs that invert the transcriptional activity of hyperconnected MR modules, produced highly significant 30-day disease control rates (68% and 91%, respectively). Moreover, of 18 OncoTreat-predicted drugs, 15 induced the predicted MR-module activity inversion in vivo. Predicted drugs significantly outperformed antineoplastic drugs selected as unpredicted controls, suggesting these methods may substantively complement existing precision cancer medicine approaches, as also illustrated by a case study.

SIGNIFICANCE

Complementary precision cancer medicine paradigms are needed to broaden the clinical benefit realized through genetic profiling and immunotherapy. In this first-in-class application, we introduce two transcriptome-based tumor-agnostic systems biology tools to predict drug response in vivo. OncoTarget and OncoTreat are scalable for the design of basket and umbrella clinical trials. This article is highlighted in the In This Issue feature, p. 1275.

Breast cancer treatment receipt and the role of financial stress, health literacy, and numeracy among diverse breast cancer survivors

PURPOSE

Disparities in breast cancer treatment for low-income and minority women are well documented. We examined economic hardship, health literacy, and numeracy and whether these factors were associated with differences in receipt of recommended treatment among breast cancer survivors.

METHODS

During 2018-2020, we surveyed adult women diagnosed with stage I-III breast cancer between 2013 and 2017 and received care at three centers in Boston and New York. We inquired about treatment receipt and treatment decision-making. We used Chi-squared and Fisher's exact tests to examine associations between financial strain, health literacy, numeracy (using validated measures), and treatment receipt by race and ethnicity.

RESULTS

The 296 participants studied were 60.1% Non-Hispanic (NH) White, 25.0% NH Black, and 14.9% Hispanic; NH Black and Hispanic women had lower health literacy and numeracy and reported more financial concerns. Overall, 21 (7.1%) women declined at least one component of recommended therapy, without differences by race and ethnicity. Those not initiating recommended treatment(s) reported more worry about paying large medical bills (52.4% vs. 27.1%), worse household finances since diagnosis (42.9% vs. 22.2%), and more uninsurance before diagnosis (9.5% vs. 1.5%); all P < .05. No differences in treatment receipt by health literacy or numeracy were observed.

CONCLUSION

In this diverse population of breast cancer survivors, rates of treatment initiation were high. Worry about paying medical bills and financial strain were frequent, especially among non-White participants. Although we observed associations of financial strain with treatment initiation, because few women declined treatments, understanding the scope of impact is limited. Our results highlight the importance of assessments of resource needs and allocation of support for breast cancer survivors. Novelty of this work includes the granular measures of financial strain and inclusion of health literacy and numeracy.

Metformin, placebo, and endocrine therapy discontinuation among participants in a randomized double-blind trial of metformin vs placebo in hormone receptor-positive early-stage breast cancer (CCTG MA32)

BACKGROUND

The MA32 study investigated whether 5 years of metformin (versus placebo) improves invasive disease-free survival in early-stage breast cancer (BC). Non-adherence to endocrine therapy (ET) and medications for chronic conditions is common and increases with drug toxicity and polypharmacy. This secondary analysis evaluates rates and predictors of early discontinuation of metformin, placebo, and ET among participants with HR-positive BC.

METHODS

Patients with high-risk non-metastatic BC were randomized to 60 months of metformin (850 mg BID) or placebo BID. Patients were administered bottles of metformin/placebo every 180 days. Metformin/placebo adherence was defined as a bottle dispensed at month 48 or later. The ET adherence analysis included patients with HR-positive BC who received ET with start and stop date reported, with adherence defined as > 48 months of use. Associations of covariates with study drug and ET adherence were examined using multivariable models.

RESULTS

Among the 2521 HR-positive BC patients, 32.9% were non-adherent to study drug. Non-adherence was higher among patients on metformin vs placebo (37.1% vs 28.7%, p < 0.001). Reassuringly, ET discontinuation rates were similar between treatment arms (28.4% vs 28.0%, p = 0.86). Patients who were non-adherent to ET were more likely to discontinue study therapy (38.8% vs 30.1%, p < 0.0001). In a multivariable analysis, study drug non-adherence was increased with metformin vs placebo (OR: 1.50, 95% CI 1.25-1.80; p < 0.0001); non-adherence to ET (OR: 1.47, 95% CI 1.20-1.79, p < 0.0001); grade 1 or greater GI toxicity during the first 2 years; lower age; and higher body mass index.

CONCLUSION

While non-adherence was higher among patients on metformin, it was still considerable among patients on placebo. Reassuringly, treatment arm allocation did not impact ET adherence. Attention to global medication adherence is needed to improve BC and non-oncological outcomes in cancer survivors.

TRIAL REGISTRATION

ClinicalTrials.gov: NCT01.

Social determinants of health and CDK4/6 inhibitor use and outcomes among patients with metastatic breast cancer

BACKGROUND

Survival outcomes in metastatic breast cancer (MBC) have improved due to novel agents such as CDK4/6 inhibitors (CDK4/6i). Nevertheless, Black patients and patients with lower socioeconomic status (SES) continue to bear a disproportionate mortality burden.

METHODS

We conducted a retrospective analysis of EHR-derived data from the Flatiron Health Database (FHD). A dataset was constructed to include Black/African-American (Black/AA) and White patients with hormone receptor (HR)-positive, HER2-negative MBC. Outcomes included CDK4/6i use (overall and first-line), and rates of leukopenia, dose reduction, and time on treatment for first-line CDK4/6i. Multivariable logistic regression was used to evaluate factors associated with use and outcomes.

RESULTS

A total of 6802 patients with MBC were included, of which 5187 (76.3%) received CDK4/6i. Of those, 3186 (61.4%) received CDK4/6i first-line. Overall, 86.7% of patients were categorized as White and 13.3% as Black/AA; 22.4% were > 75 years old; 12.6% were treated at an academic site; 3.3% had Medicaid insurance. In addition to advanced age and poorer performance status, lower use of CDK4/6i was associated with Black/AA vs White race (72.9% vs 76.8%; OR 0.83, 95% CI 0.70-0.99, p = 0.04) and Medicaid vs commercial insurance (69.6% vs 77.4%; OR: 0.68, 95% CI 0.49-0.95, p = 0.02). Odds of CDK4/6i use were twofold higher for patients treated at an academic center (p < 0.001). Rates of CDK4/6i-induced leukopenia and dose reductions did not differ significantly by race, insurance type, or treatment site. Time on CDK4/6i was significantly lower among Medicaid patients (395 days) than patients with commercial insurance (558 days) or Medicare (643 days) (p = 0.03).

CONCLUSION

This analysis of real-world data suggests that Black race and lower SES are associated with decreased CDK4/6i use. However, among patients treated with CDK4/6i, subsequent toxicity outcomes are similar. Efforts to ensure access to these life-prolonging medications are warranted.

Association of Patient, Physician, and Practice-Level Factors with Uptake of Payer-Led Oncology Clinical Pathways

Importance

Payers use oncology clinical pathways programs to increase evidence-based drug prescribing and control drug spending. However, compliance with these programs has been low, which may decrease their efficacy, and factors associated with pathway compliance are unknown.

Objective

To determine extent of pathway compliance and identify factors associated with pathway compliance using characteristics of patients, practices, and the companies that develop cancer treatment pathways.

Design, Setting, and Participants

This cohort study comprised patients with claims and administrative data from a national insurer and a pathways health care professional between July 1, 2018, and October 31, 2021. Adult patients with metastatic breast, lung, colorectal, pancreatic, melanoma, kidney, bladder, gastric, and uterine cancer being treated in the first line were included. Six months of continuous insurance coverage prior to the date of treatment initiation was required for determination of baseline characteristics. Stepwise logistic regression was used to identify factors associated with pathway compliance.

Main Outcomes and Measures

Use of a pathway program-endorsed treatment regimen in the first-line setting for metastatic cancer.

Results

Among 17 293 patients (mean [SD] age, 60.7 [11.2] years; 9183 [53.1%] women; mean [SD] Black patients per census block, 0.10 [0.20]), 11 071 patients (64.0%) were on-pathway, and 6222 (36.0%) were off-pathway. Factors associated with increased pathway compliance were higher health care utilization during the 6-month baseline period (measured in inpatient visits and emergency department visits) (5220 on-pathway inpatient visits [47.2%] vs 2797 off-pathway [45.0%]; emergency department visits, 3304 [27.1%] vs 1503 [24.2%]; adjusted odds ratio [aOR] for inpatient visits, 1.32; 95% CI, 1.22-1.43; P < .001), volume of patients with this insurance provider per physician (mean [SD] visits: on-pathway, 128.0 [258.3] vs off-pathway, 121.8 [161.4]; aOR, 1.12; 95% CI, 1.04-1.20; P = .002), and practice participation in the Oncology Care Model (on-pathway participation, 2601 [23.5%] vs 1305 [21.0%]; aOR, 1.13; 95% CI, 1.04-1.23; P = .004). Higher total medical cost during the 6-month baseline period were associated with decreased pathway compliance (mean [SD] costs: on-pathway, $55 990 [$69 706] vs $65 955 [$74 678]; aOR, 0.86; 95% CI, 0.83-0.88; P < .001). There was heterogeneity in odds of pathway compliance between different malignancies. Pathway compliance rates trended down from the reference year of 2018.

Conclusions and Relevance

In this cohort study, despite generous financial incentives, compliance with payer-led pathways remained at historically reported low rates. Factors such as increasing exposure to the program due to the number of patients impacted and participation in other value-based payment programs, such as the Oncology Care Model, were positively associated with compliance; factors such as the type of cancer and patient complexity may have played a role, but the directionality of potential effects was unclear.

Adherence to Cancer Prevention Lifestyle Recommendations Before, During, and 2 Years After Treatment for High-risk Breast Cancer

Importance

The American Institute for Cancer Research and American Cancer Society regularly publish modifiable lifestyle recommendations for cancer prevention. Whether these recommendations have an impact on high-risk breast cancer survival remains unknown.

Objective

To investigate whether adherence to cancer prevention recommendations before, during, and 1 and 2 years after breast cancer treatment was associated with disease recurrence or mortality.

Design, Setting, and Participants

The Diet, Exercise, Lifestyles, and Cancer Prognosis Study (DELCaP) was a prospective, observational cohort study designed to assess lifestyles before diagnosis, during treatment, and at 1 and 2 years after treatment completion, implemented ancillary to the Southwest Oncology Group (SWOG) S0221 trial, a multicenter trial that compared chemotherapy regimens in breast cancer. Participants were chemotherapy-naive patients with pathologic stage I to III high-risk breast cancer, defined as node-positive disease with hormone receptor-negative tumors larger than 1 cm or any tumor larger than 2 cm. Patients with poor performance status and comorbidities were excluded from S0221. The study was conducted from January 1, 2005, to December 31, 2010; mean (SD) follow-up time for those not experiencing an event was 7.7 (2.1) years through December 31, 2018. The analyses reported herein were performed from March 2022 to January 2023.

Exposure

An aggregated lifestyle index score comprising data from 4 time points and 7 lifestyles, including (1) physical activity, (2) body mass index, (3) fruit and vegetable consumption, (4) red and processed meat intake, (5) sugar-sweetened beverage consumption, (6) alcohol consumption, and (7) smoking. Higher scores indicated healthier lifestyle.

Main Outcomes and Measures

Disease recurrence and all-cause mortality.

Results

A total of 1340 women (mean [SD] age, 51.3 [9.9] years) completed the baseline questionnaire. Most patients were diagnosed with hormone-receptor positive breast cancer (873 [65.3%]) and completed some education beyond high school (954 [71.2%]). In time-dependent multivariable analyses, patients with highest vs lowest lifestyle index scores experienced a 37.0% reduction in disease recurrence (hazard ratio, 0.63; 95% CI, 0.48-0.82) and a 58.0% reduction in mortality (hazard ratio, 0.42; 95% CI, 0.30-0.59).

Conclusions and Relevance

In this observational study of patients with high-risk breast cancer, strongest collective adherence to cancer prevention lifestyle recommendations was associated with significant reductions in disease recurrence and mortality. Education and implementation strategies to help patients adhere to cancer prevention recommendations throughout the cancer care continuum may be warranted in breast cancer.

Opportunistic Salpingectomy at the Time of Laparoscopic Cholecystectomy for Ovarian Cancer Prevention: A Cost-effectiveness Analysis

OBJECTIVE

To perform a cost-effectiveness analysis to examine the utility and effectiveness of OS performed at the time of elective cholecystectomy [laparoscopic cholecystectomy (LAP-CHOL)].

SUMMARY BACKGROUND DATA

OS has been adopted as a strategy to reduce the risk of ovarian cancer in women undergoing hysterectomy and tubal sterilization, although the procedure is rarely performed as a risk reducing strategy during other abdominopelvic procedures.

METHODS

A decision model was created to examine women 40, 50, and 60 years of age undergoing LAP-CHOL with or without OS. The lifetime risk of ovarian cancer was assumed to be 1.17%, 1.09%, and 0.92% for women age 40, 50, and 60 years, respectively. OS was estimated to provide a 65% reduction in the risk of ovarian cancer and to require 30 additional minutes of operative time. We estimated the cost, quality-adjusted life-years, ovarian cancer cases and deaths prevented with OS.

RESULTS

The additional cost of OS at LAP-CHOL ranged from $1898 to 1978. In a cohort of 5000 women, OS reduced the number of ovarian cancer cases by 39, 36, and 30 cases and deaths by 12, 14, and 16 in the age 40-, 50-, and 60-year-old cohorts, respectively. OS during LAP-CHOL was cost-effective, with incremental cost-effectiveness ratio of $11,162 to 26,463 in the 3 age models. In a probabilistic sensitivity analysis, incremental cost-effectiveness ratio for OS were less than $100,000 per quality-adjusted life-years in 90.5% or more of 1000 simulations.

CONCLUSIONS

OS at the time of LAP-CHOL may be a cost-effective strategy to prevent ovarian cancer among average risk women.

Systemic Progestins and Progestin-Releasing Intrauterine Device Therapy for Premenopausal Patients With Endometrial Intraepithelial Neoplasia

OBJECTIVE

To estimate trends in use and outcomes of progestin therapy for premenopausal patients with endometrial intraepithelial neoplasia.

METHODS

The MarketScan Database was used to identify patients aged 18-50 years with endometrial intraepithelial neoplasia from 2008 to 2020. Primary treatment was classified as hysterectomy or progestin-based therapy. Within the progestin group, treatment was classified as systemic therapy or progestin-releasing intrauterine device (IUD). The trends in use of progestins and the pattern of progestin use were examined. A multivariable logistic regression model was fit to examine the association between baseline characteristics and the use of progestins. The cumulative incidence of hysterectomy, uterine cancer, and pregnancy since initiation of progestin therapy was analyzed.

RESULTS

A total of 3,947 patients were identified. Hysterectomy was performed in 2,149 (54.4%); progestins were used in 1,798 (45.6%). Use of progestins increased from 44.2% in 2008 to 63.4% in 2020 (P=.002). Among the progestin users, 1,530 (85.1%) were treated with systemic progestin, and 268 (14.9%) were treated with progestin-releasing IUD. Among progestin users, use of IUD increased from 7.7% in 2008 to 35.6% in 2020 (P<.001). Hysterectomy was ultimately performed in 36.0% (95% CI 32.8-39.3%) of those who received systemic progestins compared with 22.9% (95% CI 16.5-30.0%) of those treated with progestin-releasing IUD (P<.001). Subsequent uterine cancer was documented in 10.5% (95% CI 7.6-13.8%) of those who received systemic progestins compared with 8.2% (95% CI 3.1-16.6%) of those treated with progestin-releasing IUD (P=.24). Venous thromboembolic complications occurred in 27 (1.5%) of those treated with progestins; the venous thromboembolism (VTE) rate was similar for oral progestins and progestin-releasing IUD.

CONCLUSION

The rate of conservative treatment with progestins in premenopausal individuals with endometrial intraepithelial neoplasia has increased over time, and among progestin users, progestin-releasing IUD use is increasing. Progestin-releasing IUD use may be associated with a lower rate of hysterectomy and a similar rate of VTE compared with oral progestin therapy.

Abstract SY43-03: Sex differences in severe adverse events in patients receiving immunotherapy, targeted therapy, or chemotherapy in Cancer clinical trials: An evidentiary perspective

Introduction: For patients with cancer receiving cytotoxic therapy, adverse events (AEs) have been found to be more common in women than men. Yet few studies have investigated potential sex differences in AEs among patients receiving immune or targeted therapies. Moreover, no prior research has examined whether patient-reported outcomes (PROs) - which directly measure the patients’ treatment experience and have been shown to predict many cancer outcomes - may be used to identify differences in risk of AEs overall or by patient sex.

Methods: We analyzed treatment-related AEs by sex in phase II and III clinical trials conducted by the SWOG Cancer Research Network between 1980 and 2019, excluding sex-specific cancers. We used the Common Terminology Criteria for Adverse Events (CTCAE) to categorize AE codes and grade. Symptomatic AEs were defined as those aligned with the National Cancer Institute’s PRO-CTCAE; laboratory-based or observable/measurable AEs were designated as objective (hematologic v nonhematologic). Thirteen symptomatic and 14 objective AE categories were examined. Baseline fatigue was used as an indicator of patient-reported symptoms that reflects a key aspect of quality of life. Fatigue was derived from the Functional Assessment of Cancer Therapy (FACT) or the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30 (EORTC QLQ-C30). Fatigue scores were dichotomized as clinically significant (yes vs. no). The association of sex and clinically significant fatigue were examined separately; also, we examined whether the association of severe AEs by sex differed according to levels of clinically significant fatigue using interaction tests. Multivariable logistic regression was used, adjusting for age, race, and disease prognosis. Analyses were conducted among all cancer treatment domains combined; separately according to categories of cytotoxic therapy, immune-based therapy, and targeted therapy; and were delineated according to symptomatic AEs vs. observable/measurable AEs.

Results: As previously reported, we examined N=23,296 patients (women, n=8,838; men, n=14,458) receiving chemotherapy (n=17,417), immunotherapy (n=2,319), or targeted therapy (n=3,560). Among 202 trials, 274,688 AEs were identified. Women were found to have an overall 34% increased risk of Grade 3 or higher (severe) AEs compared to men (odds ratio [OR] =1.34; 95% CI, 1.27 to 1.42; P&lt;.001). In patients receiving immunotherapy, the risk for women was 49% higher (OR=1.49; 95% CI, 1.24 to 1.78; P&lt;.001).

Women experienced an increased risk of severe symptomatic AEs among all treatments, especially immunotherapy (OR=1.66; 95% CI, 1.37 to 2.01; P&lt;.001). Women receiving chemotherapy or immunotherapy experienced increased severe hematologic AEs. No statistically significant sex differences in risk of nonhematologic AEs were found. Analyses by patient-reported baseline fatigue will be presented.

Conclusions: We found increased risk of severe symptomatic AEs and severe hematologic AEs for women compared to men across multiple treatment modalities. Possible reasons for these differences include differences in mechanisms related to pharmacogenomics of drug metabolism/disposition or differences in total dose received and/or adherence to therapy. Based on the large sex differences in AEs we identified among patients receiving immunotherapy, continued study of the association of sex and AEs for immune-based treatments is a priority. Taken together, these findings suggest that in an era of precision medicine, patient sex may be an important component of the evaluation of risks of treatment. The potential use of patient-reported outcomes to predict the risk of severe toxicity in patients receiving systemic therapy for cancer could aid in decision-making between patients and their clinical care team.

Citation Format: Joseph M. Unger, Dawn L. Hershman. Sex differences in severe adverse events in patients receiving immunotherapy, targeted therapy, or chemotherapy in Cancer clinical trials: An evidentiary perspective. [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr SY43-03.

Novel Approaches for Dynamic Visualization of Adverse Event Data in Oncology Clinical Trials: A Case Study Using Immunotherapy Trial S1400-I (SWOG)

PURPOSE

Clinical trial adverse event (AE) data are increasingly complex and high-dimensional, especially for trials evaluating novel targeted agents and immunotherapies. Standard approaches to summarize and analyze AEs remain generally tabular, failing to describe the nature of AEs. Novel dynamic and data visualization methods are needed to enable a more comprehensive assessment of the overall toxicity profile of treatments.

METHODS

We developed methods for visualizing the numerous categorizations and types of AEs along with a dynamic approach to better reflect its highly dimensional nature without sacrificing the reporting of rare events. Circular plots displaying the proportion of maximal-grade AEs by system organ classes (SOCs) and butterfly plots displaying the proportion of AEs by severity for each AE term were developed to enable comparisons of AE patterns by treatment arm. These approaches were applied to a randomized phase III trial (S1400I; ClinicalTrials.gov identifier: NCT02785952) comparing nivolumab with nivolumab plus ipilimumab in patients with stage IV squamous non-small-cell lung cancer.

RESULTS

Our visualizations revealed that patients randomly assigned to nivolumab and ipilimumab had higher rates of grade 3 or higher AEs compared with nivolumab alone for several SOCs, including musculoskeletal (5.6% v 0.8%), skin (5.6% v 0.8%), vascular (5.6% v 1.6%), and cardiac (4% v 1.6%) toxicities. They also suggested a pattern of higher prevalence of moderate GI and endocrine toxicities and showed that although the rates of cardiac and neurologic toxicities were similar, the types of events were discordant.

CONCLUSION

The graphical approaches we proposed enable a more comprehensive and intuitive evaluation of toxicity types by treatment groups, which is not apparent in tabular and descriptive reporting methods.

Development of cardiometabolic risk factors following endocrine therapy in women with breast cancer

PURPOSE

Studies comparing the effect of aromatase inhibitor (AI) and tamoxifen use on cardiovascular disease (CVD) risk factors in hormone-receptor positive breast cancer (BC) survivors report conflicting results. We examined associations of endocrine therapy use with incident diabetes, dyslipidemia, and hypertension.

METHODS

The Pathways Heart Study examines cancer treatment exposures with CVD-related outcomes in Kaiser Permanente Northern California members with BC. Electronic health records provided sociodemographic and health characteristics, BC treatment, and CVD risk factor data. Hazard ratios (HR) and 95% confidence intervals (CI) of incident diabetes, dyslipidemia, and hypertension in hormone-receptor positive BC survivors using AIs or tamoxifen compared with survivors not using endocrine therapy were estimated using Cox proportional hazards regression models adjusted for known confounders.

RESULTS

In 8,985 BC survivors, mean baseline age and follow-up time was 63.3 and 7.8 years, respectively; 83.6% were postmenopausal. By treatment, 77.0% used AIs, 19.6% used tamoxifen, and 16.0% used neither. Postmenopausal women who used tamoxifen had an increased rate (HR: 1.43, 95% CI: 1.06-1.92) of developing hypertension relative to those who did not use endocrine therapy. Tamoxifen use was not associated with incident diabetes, dyslipidemia, or hypertension in premenopausal BC survivors. Postmenopausal AI users had higher hazard rates of developing diabetes (HR: 1.37, 95% CI: 1.05-1.80), dyslipidemia (HR: 1.58, 95% CI: 1.29-1.92) and hypertension (HR: 1.50, 95% CI: 1.24-1.82) compared with non-endocrine therapy users.

CONCLUSION

Hormone-receptor positive BC survivors treated with AIs may have higher rates of developing diabetes, dyslipidemia, and hypertension over an average 7.8 years post-diagnosis.

Clinical Characteristics, Racial Inequities, and Outcomes in Patients with Breast Cancer and COVID-19: A COVID-19 and Cancer Consortium (CCC19) Cohort Study

Background

Limited information is available for patients with breast cancer (BC) and coronavirus disease 2019 (COVID-19), especially among underrepresented racial/ethnic populations.

Methods

This is a COVID-19 and Cancer Consortium (CCC19) registry-based retrospective cohort study of females with active or history of BC and laboratory-confirmed severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection diagnosed between March 2020 and June 2021 in the US. Primary outcome was COVID-19 severity measured on a five-level ordinal scale, including none of the following complications, hospitalization, intensive care unit admission, mechanical ventilation, and all-cause mortality. Multivariable ordinal logistic regression model identified characteristics associated with COVID-19 severity.

Results

1,383 female patient records with BC and COVID-19 were included in the analysis, the median age was 61 years, and median follow-up was 90 days. Multivariable analysis revealed higher odds of COVID-19 severity for older age (aOR per decade, 1.48 [95% CI, 1.32 - 1.67]); Black patients (aOR 1.74; 95 CI 1.24-2.45), Asian Americans and Pacific Islander patients (aOR 3.40; 95 CI 1.70 - 6.79) and Other (aOR 2.97; 95 CI 1.71-5.17) racial/ethnic groups; worse ECOG performance status (ECOG PS ≥2: aOR, 7.78 [95% CI, 4.83 - 12.5]); pre-existing cardiovascular (aOR, 2.26 [95% CI, 1.63 - 3.15])/pulmonary comorbidities (aOR, 1.65 [95% CI, 1.20 - 2.29]); diabetes mellitus (aOR, 2.25 [95% CI, 1.66 - 3.04]); and active and progressing cancer (aOR, 12.5 [95% CI, 6.89 - 22.6]). Hispanic ethnicity, timing and type of anti-cancer therapy modalities were not significantly associated with worse COVID-19 outcomes. The total all-cause mortality and hospitalization rate for the entire cohort was 9% and 37%, respectively however, it varied according to the BC disease status.

Conclusions

Using one of the largest registries on cancer and COVID-19, we identified patient and BC related factors associated with worse COVID-19 outcomes. After adjusting for baseline characteristics, underrepresented racial/ethnic patients experienced worse outcomes compared to Non-Hispanic White patients.