The prognostic effect of tumor-associated macrophages in stage I-III colorectal cancer depends on T cell infiltration.

BACKGROUND: Tumor-associated macrophages (TAMs) are associated with unfavorable patient prognosis in many cancer types. However, TAMs are a heterogeneous cell population and subsets have been shown to activate tumor-infiltrating T cells and confer a good patient prognosis. Data on the prognostic value of TAMs in colorectal cancer are conflicting. We investigated the prognostic effect of TAMs in relation to tumor-infiltrating T cells in colorectal cancers. METHODS: The TAM markers CD68 and CD163 were analyzed by multiplex fluorescence immunohistochemistry and digital image analysis on tissue microarrays of 1720 primary colorectal cancers. TAM density in the tumor stroma was scored in relation to T cell density (stromal CD3+ and epithelial CD8+ cells) and analyzed in Cox proportional hazards models of 5-year relapse-free survival. Multivariable survival models included clinicopathological factors, MSI status and BRAFV600E mutation status. RESULTS: High TAM density was associated with a favorable 5-year relapse-free survival in a multivariable model of patients with stage I-III tumors (p = 0.004, hazard ratio 0.94, 95% confidence interval 0.90-0.98). However, the prognostic effect was dependent on tumoral T-cell density. High TAM density was associated with a good prognosis in patients who also had high T-cell levels in their tumors, while high TAM density was associated with poorer prognosis in patients with low T-cell levels (pinteraction = 0.0006). This prognostic heterogeneity was found for microsatellite stable tumors separately. CONCLUSIONS: This study supported a phenotypic heterogeneity of TAMs in colorectal cancer, and showed that combined tumor immunophenotyping of multiple immune cell types improved the prediction of patient prognosis.

Single-cell transcriptomic analysis of human colonic macrophages reveals niche-specific subsets.

Macrophages are a heterogeneous population of cells involved in tissue homeostasis, inflammation, and cancer. Although macrophages are densely distributed throughout the human intestine, our understanding of how gut macrophages maintain tissue homeostasis is limited. Here we show that colonic lamina propria macrophages (LpMs) and muscularis macrophages (MMs) consist of monocyte-like cells that differentiate into multiple transcriptionally distinct subsets. LpMs comprise subsets with proinflammatory properties and subsets with high antigen-presenting and phagocytic capacity. The latter are strategically positioned close to the surface epithelium. Most MMs differentiate along two trajectories: one that upregulates genes associated with immune activation and angiogenesis, and one that upregulates genes associated with neuronal homeostasis. Importantly, MMs are located adjacent to neurons and vessels. Cell-cell interaction and gene network analysis indicated that survival, migration, transcriptional reprogramming, and niche-specific localization of LpMs and MMs are controlled by an extensive interaction with tissue-resident cells and a few key transcription factors.

Indigenous women's experiences of cervical cancer screening: Incorporating Indigenous ways of knowing into a systematic review and meta-synthesis of qualitative research.

Due to historical and contextual factors, cervical cancer is typically detected at a later stage in Indigenous women, and so has higher morbidity and mortality. Increasing participation in cervical cancer screening (CCS) could ameliorate this health inequity by detecting cancer when it is more easily treatable. To understand the perspectives, preferences, and experiences of Indigenous women related to participation in CCS, we conducted a systematic review and meta-synthesis of nine qualitative research studies. To advance decolonised qualitative evidence synthesis approaches, we use a modified version of the Two Row Wampum-Covenant Chain Tradition, a Haudenosaunee two-eyed seeing analytic approach that integrates Western approaches with Indigenous worldviews. Using the metaphor of a network of forest plants, we illustrate the systemic and topical barriers and facilitators to CCS, as reported by Indigenous women. We use this metaphor to reiterate the importance of all levels of change to improve CCS experiences for Indigenous women.

Understanding Black Women's Perspectives and Experiences of Cervical Cancer Screening: A Systematic Review and Qualitative Meta-synthesis.

Cervical cancer is the third most common gynecological cancer. Effective population-based cervical cancer screening programs exist, but improvements in morbidity and mortality continue to demonstrate racial disparities. For example, Black women are 41% more likely to develop cervical cancer than White women and are 75% more likely to die from it. It is therefore important to understand whether these inequities in cervical cancer outcomes are related to differential access and uptake of screening programs. In this systematic review and qualitative meta-synthesis, we used an intersectional lens to understand Black women's experiences and perspectives of cervical cancer screening (CCS). We identified 12 factors related to the perspectives and experiences of Black women participating in CCS. Understanding Black women's experiences and perspectives of CCS can help individual clinicians and policymakers implement CCS in a way that is culturally appropriate and cognizant of structural oppression.

Women's preferences and experiences of cervical cancer screening in rural and remote areas: a systematic review and qualitative meta-synthesis.

INTRODUCTION: Cervical cancer is one of the leading causes of mortality in women. Population-based cervical cancer screening programs have been highly effective in reducing the incidence and mortality of cervical cancer worldwide. However, disparities remain in women's cervical cancer screening participation rates, especially in rural and remote areas, where access to health care may be circumscribed due to logistical barriers. Until now, there has been no effort to review and synthesize the perspectives and experiences of women accessing cervical cancer screening in rural and remote areas. This systematic review and qualitative meta-synthesis of 14 studies aimed to describe and elaborate the issues women face when accessing cervical cancer screening in rural and remote areas. METHODS: This study used the qualitative meta-synthesis approach to review 14 studies on rural women's participation in cervical cancer screening. This research approach synthesized findings from multiple, primary qualitative studies to produce a new interpretation of the phenomenon while retaining the original meaning of each qualitative study. RESULTS: After 4937 citations were screened by database searching, 117 were retrieved for full-text review, of which 14 studies were included. This study identified two themes that modulate rural women's access to cervical cancer screening: interactions with healthcare providers and healthcare system access. Furthermore, this study found that women frequently expressed issues around patient-centered care in their interactions with healthcare providers. The implications of these findings for program design and delivery efforts in rural and remote areas are discussed. CONCLUSION: This article provides the foundation for tailoring interventions and programming to increase cervical cancer screening rates in women who reside in rural and remote areas. This review also clarifies the factors of patient-centered care that may be adopted to enhance the quality of care for women in rural and remote areas. In summary, this systematic review and qualitative meta-synthesis provide information about women's perspectives and experiences accessing cervical cancer screening in rural and remote areas. The review has strong implications for this population and can be used to inform future research and program design initiatives.

Prostate Cancer Patient Perspectives on the Use of Information in Treatment Decision-Making: A Systematic Review and Qualitative Meta-synthesis.

BACKGROUND: Men with low- to intermediate-risk prostate cancer are typically asked to choose from a variety of treatment options, including active surveillance, radical prostatectomy, or brachytherapy. The Prolaris cell cycle progression test is intended to provide additional information on personal risk status to assist men with prostate cancer in their choice of treatment. To assist with assessing that new technology, this report synthesizes qualitative research on how men with prostate cancer use information to make decisions about treatment options. METHODS: We performed a systematic review and qualitative meta-synthesis to retrieve and synthesize findings across primary qualitative studies that report on patient perspectives during prostate cancer treatment decision-making. RESULTS: Of 8,610 titles and abstracts reviewed, 29 studies are included in this report. Most men diagnosed with prostate cancer express that their information-seeking pathway extends beyond the medical information received from their health care provider. They access other social resources to attain additional medical information, lived-experience information, and medical administrative information to help support their final treatment decision. Men value privacy, trust, honesty, control, power, organization, and open communication during interactions with their health care providers. They also emphasize the importance of gaining comfort with their treatment choice, having a chance to confirm their health care provider's recommendations (validation of treatment plan), and exercising their preferred level of independence in the treatment decision-making process. CONCLUSIONS: Although each prostate cancer patient is unique, studies suggest that most patients seek extensive information to help inform their treatment decisions. This may happen before, during, and after the treatment choice is made. Given the amount of information patients may access, it is important that they also establish the trustworthiness of the various types and sources of information. When information conflicts, patients may be unsure about how to proceed. Open collaboration between patients and their health care providers can help patients manage and navigate their concerns so that their values and perspectives are captured in their treatment choices.