The Impact of Depression on Adherence to Diabetes Self-Management Behaviors in Breast Cancer Survivors.

OBJECTIVE: Breast cancer survivors (BCS) have higher rates of depression which is associated with lower adherence to medications, diet, and physical activity. Managing diabetes (DM) requires adherence to several of these self-management behaviors (SMB), and BCS have an increased risk of DM. We investigated whether depressive symptoms were associated with adherence to DM SMB in a cohort of BCS. METHODS: BCS with DM were surveyed semiannually for 2 years. Depression was assessed with the Hospital Anxiety and Depression Scale (HADS). Adherence to DM medication, diet, and physical activity was self-reported using the Medication Adherence Report Scale (MARS), Summary of Diabetes Self-Care Activities Assessment (SDSCA), and International Physical Activity Questionnaire (IPAQ), respectively. Using generalized linear equation modeling, the association of depressive symptoms with nonadherence to SMB was assessed, adjusting for age, race, marital status, education level, and beliefs about cancer and DM risk. RESULTS: Among 244 BCS with DM, those who were nonadherent to medication, diet, and/or physical activity had higher depression scores (p < 0.01). In adjusted analyses, higher depression scores were independently associated with dietary (OR = 1.16, p < 0.001) and physical activity nonadherence (OR = 1.18, p < 0.001) but not with medication nonadherence. Concerns about medications was independently associated with medication nonadherence (OR = 1.17, p = 0.024). CONCLUSIONS: Higher depression scores are associated with nonadherence to DM SMB in this cohort of BCS. These findings highlight the importance of addressing depressive symptoms in BCS to help improve adherence to DM medications, diet, and physical activity.

"If we don't speak the language, we aren't offered the same opportunities": Qualitative perspectives of palliative care access for women of color living with advanced breast cancer.

Context: Despite efforts to enhance equity, disparities in early palliative care (PC) access for historically minoritized patients with advanced breast cancer (ABC) persist. Insight into patient and clinician perspectives are needed to inform future models aimed at improving equity in PC access and outcomes. Objectives: To explore qualitative barriers and facilitators to early PC access in an urban setting with Black and Latina women with ABC. Methods: In this qualitative descriptive study, we conducted one-on-one interviews with Black and Latina women with ABC (N = 20) and interdisciplinary clinicians (N = 20) between February 2022 and February 2023. Participants were recruited from urban academic and community cancer clinics. Transcripts were analyzed using an inductive coding and thematic analysis approach. Results: Barriers identified by both patients and clinicians included lack of communication between oncology, PC, and primary care teams, limited understanding of PC among patients and non-PC clinicians, language and health literacy-related communication challenges, and racism and marginalization, including implicit bias and lack of diverse racial/ethnic representation in the supportive care workforce. Facilitators identified by both patients and clinicians included patient-to-patient referrals, support groups breaking cultural stigma on topics including self-advocacy and PC, referrals from trusted providers, and community organizations' abilities to overcome challenges related to social determinants of health, most specifically logistical and financial support. Conclusions: Patients and clinicians reported similar barriers and facilitators to PC access, most commonly through the lens of care coordination and communication. These findings will inform future adaptation of a culturally and linguistically care model to improve access to early PC services for Black and Latina women with ABC.

Urine scRNAseq reveals new insights into the bladder tumor immune microenvironment.

Due to bladder tumors' contact with urine, urine-derived cells (UDCs) may serve as a surrogate for monitoring the tumor microenvironment (TME) in bladder cancer (BC). However, the composition of UDCs and the extent to which they mirror the tumor remain poorly characterized. We generated the first single-cell RNA-sequencing of BC patient UDCs with matched tumor and peripheral blood mononuclear cells (PBMC). BC urine was more cellular than healthy donor (HD) urine, containing multiple immune populations including myeloid cells, CD4+ and CD8+ T cells, natural killer (NK) cells, B cells, and dendritic cells (DCs) in addition to tumor and stromal cells. Immune UDCs were transcriptionally more similar to tumor than blood. UDCs encompassed cytotoxic and activated CD4+ T cells, exhausted and tissue-resident memory CD8+ T cells, macrophages, germinal-center-like B cells, tissue-resident and adaptive NK cells, and regulatory DCs found in tumor but lacking or absent in blood. Our findings suggest BC UDCs may be surrogates for the TME and serve as therapeutic biomarkers.

Multi-cancer early detection (MCED) tests: prioritizing equity from bench to bedside.

Multi-cancer early detection (MCED) tests are blood-based tests designed to screen for signals of multiple cancers. There is growing interest and investment in examining the potential benefits and applications of MCED tests. If MCED tests are shown to have clinical utility, it is important to ensure that all people-regardless of their demographic or socioeconomic background-equitably benefit from these tests. Unfortunately, with health care innovation, such considerations are often ignored until after inequities emerge. We urge for-profit companies, scientists, clinicians, payers, and government agencies to prioritize equity now-when MCEDs are still being developed and researched. In an effort to avoid creating and exacerbating cancer inequities, we propose 9 equity considerations for MCEDs.

Racial and ethnic differences in post-traumatic stress trajectories in breast cancer survivors.

PURPOSE: To describe differences in post-traumatic stress (PTS) symptoms over time among racial and ethnic minoritized breast cancer survivors (BCS) with comorbid diabetes. DESIGN: In a multisite longitudinal study, post-traumatic stress was evaluated at baseline, 6 and 12 months through self-reported questionnaires (Impact of Events Scale-Revised [IES-R]). PARTICIPANTS: One hundred and seventy-eight post-treatment BCS with diabetes were recruited from three tertiary medical centers. FINDINGS: Relative to non-Hispanic White women, minoritized women reported higher total IES-R scores at all time points. In the adjusted model, Latina women reported persistently higher IES-R total scores and Latina, and 'Other' women reported higher avoidance scores. CONCLUSIONS: Minoritized BCS with comorbid diabetes report higher rates of cancer related PTS that persist over 12 months. IMPLICATIONS FOR PSYCHOSOCIAL PROVIDERS: Post diagnosis PTS evaluation and support is important in survivorship and primary care practices. Linkage to socially and culturally sensitive community support may be warranted.

Impact of diabetes on stage I lung cancer treatment patterns and prognosis in older adults: A population-based cohort study.

Background: Diabetes is a common comorbidity in patients with early-stage non-small cell lung cancer (NSCLC), a growing population due to increased LC screening. However, it is unknown if diabetes is associated with less aggressive NSCLC treatment and worse NSCLC outcomes. This study aimed to investigate treatment patterns and outcomes of older patients with Stage I NSCLC and diabetes. Methods: Using national cancer registry data linked to Medicare, we identified patients ≥65 years old with Stage I NSCLC. Patients were categorized as having no diabetes, diabetes without severe complications (DM-c), or diabetes with ≥1 severe complication (DM + c). We used multinomial logistic regression to assess the association of diabetes and NSCLC treatment. The association of diabetes category with NSCLC and non-NSCLC survival was analyzed with Fine-Grey competing-risks regression. Results: In 25,358 patients (75% no diabetes, 12% DM-c and 13% had DM + c), adjusted analyses showed that DM-c and DM + c were associated with increased odds of receiving limited resection rather than lobectomy (odds ratio [OR]: 1.22, 95% confidence interval [CI]: 1.07-1.37 and OR 1.42, 95% CI 1.26-1.59, respectively). Competing risk regression showed diabetes was associated with increased risk of non-NSCLC death (DM-c hazard ratio [HR] 1.16, 95% CI: 1.08-1.25, DM + c HR 1.49, 95% CI: 1.40-1.59), but not NSCLC-specific death. Conclusion: This study uncovers critical information on how diabetes is associated with less aggressive early-stage NSCLC care in older patients. This study also confirms that diabetes increases death from non-lung cancer causes and managing comorbidities is crucial to improving outcomes in older early-stage NSCLC survivors.

Community Navigation and Supportive Care Experiences of Low-Income Black and Latina Cancer Survivors: Patient and Navigator Perspectives.

Background: Little is known about the role of community-based navigation in supportive care delivery for historically marginalized cancer survivors. The purposes of this study were to evaluate supportive care experiences of low-income, Black and Latina cancer survivors and examine the care role of their community navigator. Methods: Qualitative evaluation of semi-structured interviews with Black and Latina cancer survivors (n=10) and navigators (n=4) from a community-based organization for low-income women were conducted and analyzed using content analysis. Results: Content analysis yielded six themes that described the supportive care experience over time and before and after navigator support. Navigating supportive care alone: a) internal and external influencers; b) alone and just surviving; c) feeling overwhelmed and distressed. Community Navigator delivered supportive care: a) establishing trust and safety; b) accepting multi-dimensional, navigator assisted supportive care management; c) distress alleviation. Conclusions: Low-income Black and Latina women with cancer reported internal strength yet endured cancer care alone leading to a feeling of distress. Subsequently, community navigators provided patient-centric, supportive care and alleviate physical and emotional distress. These findings highlight the importance of increasing awareness of and linkage to community navigators who may be able to meet the supportive care needs of diverse patient populations.

What Affects Treatment Underuse in Multiple Myeloma in the United States: A Qualitative Study.

BACKGROUND: Multiple myeloma (MM) is the second most common hematologic malignancy. African Americans are more likely than Whites to be diagnosed with and die of MM, but they experience the same survival times in clinical trials, suggesting that differences in survival may be attributed to differences in receipt of treatment or differences in access to new treatments. We undertook this study to identify the reasons and needs underlying disparities in treatment among patients diagnosed with MM. METHODS: We conducted in-depth interviews in 2019-2020 with patients diagnosed with MM between 2010 and 2014 who were identified as eligible for transplant and maintenance therapy and having experienced delays in or underuse of treatment for MM. Underuse was defined as the lack of a particular treatment that the patient was eligible to receive, not being transplanted if eligible, and/or not receiving maintenance therapy. Underuse included patients' decision to delay harvest or autologous stem cell transplant (ASCT) for the time being and return to the decision in the future. All interviews were audio-recorded and transcribed verbatim. Four investigators independently coded transcripts through inductive analysis to assess reasons for treatment decisions. RESULTS: Of the 29 patients interviewed, 68% experienced treatment underuse: 21% self-identified as African American, 5% as Hispanic, 10% as mixed race, 57% as White, and 16% as Asian. There were no racial differences in reasons for underuse or delay. Themes relating to treatment underuse included: perceived pros and cons of treatment, including potential harm or lack thereof in delaying treatment; physician recommendations; and personal agency. CONCLUSION: Patients' decision making, delays, and underuse of MM treatment are influenced by social, personal, medical, and contextual factors. Patients consider their relationship with their physician to be one of the most significant driving forces in their decisions and treatment plans.

Assessing the Effect of Cancer Diagnosis on Beliefs about Comorbid Diabetes.

OBJECTIVES: Increasingly, patients diagnosed with cancer also live with chronic comorbidities, and it is important to understand the impact of a new cancer diagnosis on perceptions about preexisting conditions. This study assessed the effect of cancer diagnosis on beliefs about comorbid diabetes mellitus and assessed changes in beliefs about cancer and diabetes over time. DATA SOURCES: We recruited 75 patients with type 2 diabetes who were newly diagnosed with early-stage breast, prostate, lung, or colorectal cancer and 104 age-, sex-, and hemoglobin A1c-matched controls. Participants completed the Brief Illness Perception Questionnaire four times over 12 months. The authors examined within-patient and between-group differences in cancer and diabetes beliefs at baseline and over time. RESULTS: Overall, diabetes beliefs did not differ between cancer patients and controls at baseline. Cancer patients' beliefs about diabetes varied significantly over time; they reported less concern about cancer, less emotional effect, and greater cancer knowledge over time. Participants without cancer were significantly more likely to report that diabetes affected their life across all time points, though this effect did not persist after adjustment for sociodemographic variables. CONCLUSION: While all patients' diabetes beliefs were similar at baseline and 12 months, cancer patients' beliefs about both illnesses fluctuated during the months following cancer diagnosis. IMPLICATIONS FOR NURSING PRACTICE: Oncology nurses can play a key role in recognizing the effects of cancer diagnosis on beliefs about comorbid conditions and fluctuations in these beliefs during treatment. Assessing and communicating patient beliefs between oncology and other practitioners could produce more effective care plans based on patients' current outlook on their health.

Facilitators of Multiple Myeloma Treatment: A Qualitative Study.

OBJECTIVES: To examine factors that lead to the facilitation of multiple myeloma (MM) treatment. SAMPLE & SETTING: 29 patients who had been diagnosed with MM at Mount Sinai Hospital in New York City. METHODS & VARIABLES: Semistructured qualitative interviews were administered by trained research staff. Interview topics included illness beliefs, illness experiences, treatment experiences, and treatment decision-making. Interviews were audio recorded and transcribed verbatim. Four coders independently coded the transcripts, and the authors analyzed data using interpretive description. RESULTS: The following facilitators of treatment were identified: (a) healthcare team trust and support, (b) personal resilience and initiative-taking, and (c) external support (emotional/social support and instrumental/organizational support). Healthcare team trust and support were established through rapport-building and compassion, accessibility and time spent with the patient, shared decision-making, and provider reputation. Personal resilience was manifested by patients through positive attitudes, taking control of their illness, and self-advocacy. IMPLICATIONS FOR NURSING: Understanding factors that facilitate MM treatment may lead to better patient outcomes and can potentially inform oncology nursing practice by providing a framework for tailored health education and care management practices for patients with MM.

Cancer beliefs and diet self-management among cancer survivors with comorbid diabetes.

PURPOSE: Illness beliefs impact disease self-management; however, little is known about the impact of patients' beliefs about one illness on the management of another illness. We sought to understand how cancer beliefs impact diet self-management for cancer survivors with diabetes and whether a change in beliefs leads to a change in dietary adherence. METHODS: Seventy-eight participants with diabetes and recently diagnosed early-stage breast, prostate, lung, or colon cancer were recruited. Participants were surveyed at enrollment and after 12 months about their cancer and diabetes illness beliefs and dietary adherence. Associations between beliefs about cancer and diabetes to diet adherence at baseline and at 12 months were assessed. Change in diet adherence was examined in relation to beliefs about each illness. RESULTS: The mean age was 62 years, and 23 (32%) identified as black non-Hispanic, 22 (31%) as white non-Hispanic, and 14 (19%) as Hispanic. Participants with more threatening beliefs about both cancer and diabetes at baseline had worse adherence to a diabetes diet than those with less threatening beliefs. However, at 12 months, those with more threatening cancer beliefs had better dietary adherence than participants with less threatening beliefs. Diabetes beliefs were not associated with diet adherence at 12 months. CONCLUSIONS: While threatening illness beliefs may initially result in worse diet adherence, over time these beliefs may result in increased activation for better self-care and improved diet adherence. IMPLICATIONS FOR CANCER SURVIVORS: Understanding how cancer beliefs impact diet self-management for diabetes may provide coping strategies to improve cancer survivors' management of comorbidities.

The TCI Clinical Encounter Program for PhD Students in Cancer Biology: a Feasibility Pilot.

Clinical rotations are often not included in graduate-level cancer biology curricula; however, basic insight into clinical oncology is often crucial for developing translational research that addresses unmet needs with the potential to benefit cancer patients. We describe a needs assessment, design, implementation, and descriptive evaluation of an oncology-specific pilot clinical encounter program developed for PhD students in the Cancer Biology Training Area (CAB) in the Graduate School of Biomedical Sciences (GSBS) and Tisch Cancer Institute (TCI) at the Icahn School of Medicine at Mount Sinai (ISMMS). Prior to the development of this pilot program, CAB students, in years 2-5 + , were surveyed to determine their interest in a structured clinical experience. Seventeen out of thirty-one students responded (55%) to the survey. Of those seventeen respondents, fifteen (88.2%) expressed that exposure to cancer patients in the clinical setting would be useful for their pre-doctoral biomedical science and cancer biology training and indicated an interest in participating in the clinical encounter program. Based on these responses, a three-session clinical encounter pilot program was designed. Two separate cohorts of 5 students participated in this pilot program. During a formal debrief, following the clinical experience, students commented on the resilience of patients and the importance of research on clinical decision making, and reported that they found the experience motivational. Five out of 10 students responded (50%) to a post-program assessment survey; all five respondents answered that they would recommend the clinical encounter program to their peers. While limited in size and scope, this pilot TCI Clinical Encounter Program proved feasible and has the potential to enrich and inform the experience of PhD students pursing advanced degrees in a cancer biology.

Clinical and sociodemographic risk factors associated with the development of second primary cancers among postmenopausal breast cancer survivors.

BACKGROUND: Advancement in breast cancer (BC) diagnosis and treatment have increased the number of long-term survivors. Consequently, primary BC survivors are at a greater risk of developing second primary cancers (SPCs). The risk factors for SPCs among BC survivors including sociodemographic characteristics, cancer treatment, comorbidities, and concurrent medications have not been comprehensively examined. The purpose of this study is to assess the incidence and clinicopathologic factors associated with risk of SPCs in BC survivors. METHODS: We analyzed 171, 311 women with early-stage primary BC diagnosed between January 2000 and December 2015 from the Medicare-linked Surveillance Epidemiology and End Results (SEER-Medicare) database. SPC was defined as any diagnosis of malignancy occurring within the study period and at least 6 months after primary BC diagnosis. Univariate analyses compared baseline characteristics between those who developed a SPC and those who did not. We evaluated the cause-specific hazard of developing a SPC in the presence of death as a competing risk. RESULTS: Of the study cohort, 21,510 (13%) of BC survivors developed a SPC and BC was the most common SPC type (28%). The median time to SPC was 44 months. Women who were white, older, and with fewer comorbidities were more likely to develop a SPC. While statins [hazard ratio (HR) 1.066 (1.023-1.110)] and anti-hypertensives [HR 1.569 (1.512-1.627)] increased the hazard of developing a SPC, aromatase inhibitor therapy [HR 0.620 (0.573-0.671)] and bisphosphonates [HR 0.905 (0.857-0.956)] were associated with a decreased hazard of developing any SPC, including non-breast SPCs. CONCLUSION: Our study shows that specific clinical factors including type of cancer treatment, medications, and comorbidities are associated with increased risk of developing SPCs among older BC survivors. These results can increase patient and clinician awareness, target cancer screening among BC survivors, as well as developing risk-adapted management strategies.

Geographic Variation in Colorectal Cancer Incidence Among Asian Americans: A Population-Based Analysis 2006-2016.

Among Asian Americans, cancer is the leading cause of death and colorectal cancer (CRC) is the second most common cancer.1 The uptake of CRC screening influences incidence and mortality trends; however, the most recent American Cancer Society CRC statistics reveals ongoing disparities in screening based on race and ethnicity, with people of Asian descent demonstrating the lowest CRC screening rates despite being the fastest growing racial or ethnic group in the United States.2,3.

A Community-Based Survey of Colorectal Cancer Screening Behaviors in Chinese Immigrants Residing in a Major Metropolitan Area.

Background: Colorectal cancer is a common cause of screening preventable death in Chinese immigrants, but colorectal cancer screening rates remain low in this population. This study evaluated factors associated with colorectal cancer screening behaviors in Chinese Americans living in New York City. Methods: Participants were foreign-born Chinese Americans, aged 50 years or older, who completed internet surveys between November 2020 and May 2021 regarding their colorectal cancer screening behaviors. Data were collected on demographics, health care utilization, participants' levels of health literacy, English proficiency, colorectal cancer perceptions and current colorectal cancer screening behaviors. Bivariate analyses using chi-square or t-tests were performed to examine associations between colorectal cancer screening behaviors and participant characteristics. Results: 103 participants were surveyed with a mean age of 71.3 years. Most participants experienced high rates of socioeconomic disadvantage (i.e., less than a high school education, annual household income <$20,000, limited health literacy, and poor English proficiency). 92% were ever screened, 81% were up-to-date on screening, and 85% expressed intention to screen in the future. Almost all participants had a primary care provider and a language concordant provider. Individuals who intended to screen were more fearful of developing colorectal cancer (3.2 vs 2.8, p=0.02) and perceived a colorectal cancer diagnosis with greater severity (3.0 vs 2.7, p=0.07) than those without intention to screen. Conclusions: In our sample, Chinese immigrants were adversely impacted by multiple social determinants of health but reported high colorectal cancer screening rates. Community-based outreach is critical to ensuring cancer-screening engagement in medically vulnerable populations.

Racial differences in weight perception among Black and White women diagnosed with breast cancer.

PURPOSE: Black women are more likely than White women to have obesity, and obesity is associated with worse breast cancer prognosis. Weight perception, however, has not been studied as a potential mediator of obesity disparities in women with breast cancer. In this study, we sought to describe racial differences and the association of lifestyle factors with weight perception. METHODS: In this cross-sectional study design, Black and White women with a new primary breast cancer were surveyed about socio-demographics, weight perception, diet, and exercise habits. Height and weight were measured at enrollment. We classified women with a BMI ≥ 25 kg/m2 or waist circumference ≥ 88 cm who reported that they were "about the right weight" as under-perceivers. Chi-square and t tests were used to assess study variables (e.g., race, physical activity) associated with under-perception of weight. Logistic regression models were fit to evaluate for racial differences in under-perception while controlling for other covariates. RESULTS: Of 1,197 women with newly diagnosed breast cancer, the average age was 58 years, and 909 (75.9%) were White. Nine hundred eighteen (77%) had stage I cancer, 1,035 (87%) had estrogen receptor positive cancer, and 795 (66%) were privately insured at time of diagnosis. Seven hundred eighty-nine (66%) women had abdominal obesity (waist circumference ≥ 88 cm), while 366 (31%) women had a BMI ≥ 25 kg/m2. Overall, 24% of women were under-perceivers. Compared to White women, Black women with WC ≥ 88 cm more frequently under-perceived their weight (24% vs. 14% p < 0.0001) were more obese with BMI > 30 kg/m2 (51% vs. 23%, p < 0.0001) and had lower physical activity (22% vs. 77%, p < 0.0001). After controlling for age, education, and stage, Black women remained more likely to under-perceive their weight relative to White women for those with BMI ≥ 25 kg/m2 (OR: 2.64; 95% CI: 1.4-4.6) or waist circumference ≥ 88 cm (OR: 2.89; 95% CI: 1.8-4.5). With respect to lifestyle factors, among women with BMI ≥ 25 kg/m2, those who met physical activity guidelines were less likely to under-perceive their weight compared to those who did not meet physical activity guidelines (OR: 0.37; 95% CI: 0.2-0.6), regardless of race. CONCLUSIONS: We found racial differences in weight perception and identified social determinants and lifestyle factors such as lower education and physical inactivity that influenced under-perception of weight among newly diagnosed breast cancer patients. IMPLICATIONS FOR CANCER SURVIVORS: Since obesity is associated with worse breast cancer outcomes, identifying optimal modifiable factors to intervene upon to support weight management among breast cancer survivors is clinically important. Breast cancer patients' perceptions about their weight provide insight that may inform lifestyle behavior interventions to reduce obesity during survivorship care.

Characterizing Beliefs About Breast Cancer and Comorbid Diabetes After Cancer Treatment.

PURPOSE: To investigate how breast cancer survivors with comorbid diabetes mellitus (diabetes) conceptualize their illnesses. PARTICIPANTS & SETTING: 19 community-dwelling, English- or Spanish-speaking women with diabetes in New York, New York, who received chemotherapy or hormone therapy for stage I-IIIA breast cancer in the past five years. METHODOLOGIC APPROACH: Semistructured interviews were administered by trained research staff, and were audio recorded and transcribed. Three coders reviewed transcripts through an iterative coding process. An interpretive descriptive approach was used to identify themes. FINDINGS: Major themes included an inverse relationship between illness control and concern, variation in perceived illness permanence, and differences in illness consequences. Women with a greater perceived control over breast cancer viewed their diabetes as a larger concern; others felt that their breast cancer could not be controlled but diabetes could. IMPLICATIONS FOR NURSING: Understanding how breast cancer survivors view diabetes and cancer may explain the variation in survivors' self-management behaviors, and how it may influence their attitudes and behaviors in the context of cancer treatment.

Tisch Cancer Institute Scholars Program: Mentored Cancer Research Training Pipeline for Medical Students.

Cancer research has led to unprecedented advances in treatment in recent decades. Physician-scientists have played a crucial role in these advances given their unique perspective at the intersection between basic research and clinical care, though their representation in cancer research has been in progressive decline. Cancer research programs that feature strong mentorship at the medical student level are associated with increased likelihood of alumni choosing a cancer research career path. In an effort to increase the cancer research medical student training pipeline, senior research faculty from the Tisch Cancer Institute (TCI) at the Icahn School of Medicine at Mount Sinai (ISMMS) developed the TCI Scholars Program, a rigorous mentored research training program funding medical students' summer research. This program is currently in its third year and has garnered significant interest among mentors and students alike from all four TCI Cancer Center Support Grant (CCSG)-funded research programs. Herein, we describe the development, implementation, evaluation, and major outcomes of this program.

Factor Xa inhibitors versus low molecular weight heparin for the treatment of cancer associated venous thromboembolism; A meta-analysis of randomized controlled trials and non-randomized studies.

INTRODUCTION: We compared the safety and efficacy of Xa-inhibitors to LMWH for treatment of venous thromboembolism in mixed and gastrointestinal cancer cohorts (CA-VTE). METHODS: A systematic search identified RCTs and non-randomized studies (NRS) comparing Xa-inhibitors to LMWH for treating CA-VTE. Relative risks were computed. Certainty was assessed using the GRADE approach. RESULTS: Xa-inhibitors reduced the risk of recurrent VTE (RR0.64;0.49-0.84) and NRS (RR0.74;0.60-0.92;Moderate-Low Certainty). There was no significant difference in recurrent PE in RCTs (RR0.72;0.50-1.02) and NRS (1.43;0.65-3.12;Low-Very Low Certainty). Xa-inhibitors increased the risk of overall bleeding events in RCTs (RR1.45;1.05-2.01) and NRS (RR1.72;1.42-2.08;Moderate-Low Certainty), and the risk of major bleeding events in NRS (RR1.56;1.17-2.07), but not in RCTs (RR1.33;0.94-1.89; Low-Very Low Certainty). Similar results were detected in gastrointestinal cancer patients. CONCLUSION: Xa-inhibitors may reduce the risk of recurrent VTE, but not recurrent PE compared to LMWH. A higher overall bleeding risk, and a questionably higher major bleeding risk was found with Xa-inhibitor use.