Differences in the expression of the phosphatase PTP-1B in patients with localized prostate cancer with and without adverse pathological features.

Introduction: Patients with adverse pathological features (APF) at radical prostatectomy (RP) for prostate cancer (PC) are candidates for adjuvant treatment. Clinicians lack reliable markers to predict these APF preoperatively. Protein tyrosine phosphatase 1B (PTP-1B) is involved in migration and invasion of PC, and its expression could predict presence of APF. Our aim was to compare PTP-1B expression in patients with and without APF, and to explore PTP-1B expression as an independent prognostic factor. Methods: Tissue microarrays (TMAs) were constructed using RP archival specimens for immunohistochemical staining of PTP-1B; expression was reported with a standardized score (0-9). We compared median PTP-1B score between cases with and without APF. We constructed two logistic regression models, one to identify the independence of PTP-1B score from biologically associated variables (metformin use and type 2 diabetes mellitus [T2DM]) and the second to seek independence of known risk factors (Gleason score and prostate specific antigen [PSA]). Results: A total of 73 specimens were suitable for TMA construction. Forty-four (60%) patients had APF. The median PTP-1B score was higher in those with APF: 8 (5-9) vs 5 (3-8) (p=0.026). In the logistic regression model including T2DM and metformin use, the PTP-1B score maintained statistical significance (OR 1.21, 95% CI 1.01-1.45, p=0.037). In the model including PSA and Gleason score; the PTP-1B score showed no independence (OR 1.68, 95% CI 0.97-1.41, p=0.11). The area under the curve to predict APF for the PTP-1B score was 0.65 (95% CI 0.52-0.78, p=0.03), for PSA+Gleason 0.71 (95% CI 0.59-0.82, p=0.03), and for PSA+Gleason+PTP-1B score 0.73 (95% CI 0.61-0.84, p=0.001). Discussion: Patients with APF after RP have a higher expression of PTP-1B than those without APF, even after adjusting for T2DM and metformin exposure. PTP-1B has a good accuracy for predicting APF but does not add to known prognostic factors.

Barriers and Facilitators for the Implementation of Geriatric Oncology Principles in Mexico: A Mixed-Methods Study.

PURPOSE: There is limited information regarding the use of the geriatric assessment (GA) for older adults with cancer in developing countries. We aimed to describe geriatric oncology practice among Mexican oncology professionals and to identify barriers and facilitators for the implementation of GA into the routine care of older adults with cancer in Mexico. METHODS: We conducted an explanatory sequential mixed-methods study. We administered an online survey to cancer specialists in Mexico about the routine use of GA and barriers for its use. We then conducted online semistructured interviews with survey respondents selected by their use of GA, expanding on barriers and facilitators for performing GA. Descriptive statistical analyses were performed for quantitative data; qualitative data were analyzed inductively through thematic analysis. We developed joint displays to integrate quantitative/qualitative results. RESULTS: We obtained 196 survey responses: 37 physicians (18.9%) reported routinely performing a GA. Medical oncologists (P = .002) and physicians seeing ≤ 10 patients/day (P = .010) were more likely to use GA. The most frequent barriers for GA use were lack of qualified personnel (49%), limited knowledge (43.9%), and insufficient time (37.2%). In the interviews (n = 22), the limited availability of geriatricians was commonly mentioned. Respondents highlighted the lack of geriatric oncology knowledge among cancer specialists and geriatricians. Saturation of oncology services and a lack of effective referral pathways for GA were also common issues. Facilitators included availability of geriatricians, system/administrative facilitators, presence of a multidisciplinary team, and availability of geriatric oncology education. CONCLUSION: The routine use of geriatric oncology principles in Mexico is limited by the availability of qualified personnel and by insufficient knowledge. An educational intervention could improve the implementation of GA in cancer care.

Oncofertility Knowledge Among Internal Medicine Residents in an Academic Center in Mexico.

Guidelines recommend discussing fertility preservation with patients with cancer. In Mexico, internists frequently are the primary care provider (PCP) for adults in reproductive age. The knowledge of oncofertility among PCPs in low and middle income countries is poorly known. Internal medicine residents in a tertiary care hospital in Mexico City participated in a survey regarding fertility concepts in cancer patients. Sixty-three residents participated; their median age was 27. Thirty percent reported 0% self-perceived confidence for providing counseling about fertility issues, and 26% reported more than 50% self-perceived confidence. Twenty-eight percent reported not asking patients in reproductive age about satisfied parity/paternity. Eighty-one percent correctly identified patients that should receive fertility counseling, and 68% identified alkylating chemotherapy as having the highest risk of infertility. Fifty-four percent were able to name at least one fertility preservation (FP) strategy for males, whereas 49% were able to name at least one strategy in females. Residents who reported at least 50% self-perceived confidence for providing fertility counseling were more likely to name at least one FP strategy for men (64.7%) versus those who reported less than 50% self-perceived confidence (52.1%), but this result was not statistically significant (p = 0.378). This was similar for FP strategies in women, with 64.7% of more confident residents naming at least one, compared with 43.4% of less confident residents (p = 0.134). Knowledge of FP in patients with cancer is insufficient among internal medicine residents in our institution. Inclusion of oncofertility concepts in the internal medicine program is needed.

Associations of Uncertainty With Psychological Health and Quality of Life in Older Adults With Advanced Cancer.

CONTEXT: Older adults with advanced cancer face uncertainty related to their disease and treatment. OBJECTIVES: To evaluate the associations of uncertainty with psychological health and quality of life (QoL) in older adults with advanced cancer. METHODS: Secondary cross-sectional analysis of baseline data from a national clustered geriatric assessment trial. Patients 70 years and older with advanced cancer considering a new line of chemotherapy were recruited. We measured uncertainty using the modified nine-item Mishel Uncertainty in Illness Scale. Dependent variables included anxiety (Generalized Anxiety Disorder-7), depression (Generalized Depression Scale-15), distress (distress thermometer), QoL (Functional Assessment of Cancer Therapy-General), and emotional well-being (Functional Assessment of Cancer Therapy-General subscale). We used multivariate linear regression analyses to evaluate the association of uncertainty with each dependent variable. We conducted a partial least squares analysis with a variable importance in projection (VIP) plot to assess the contribution of individual variables to the model. Variables with a VIP <0.8 were considered less influential. RESULTS: We included 527 patients (median age 76 years; range 70-96). In multivariate analyses, higher levels of uncertainty were significantly associated with greater anxiety (ß = 0.11; SE = 0.04), depression (ß = 0.09; SE = 0.02), distress (ß = 0.12; SE = 0.02), as well as lower QoL (ß = -1.08; SE = 0.11) and emotional well-being (ß = -0.29; SE = 0.03); the effect sizes were considered small. Uncertainty items related to disease and treatment were most strongly associated with psychological health and QoL scores (all VIP >0.8). CONCLUSION: Uncertainty among older patients with advanced cancer is associated with worse psychological health and QoL. Tailored uncertainty management strategies are warranted.

Cáncer en el adulto mayor en Latinoamérica: cooperación interdisciplinaria entre oncología y geriatria / Cancer in older adults in Latin America: interdisciplinary cooperation between oncology and geriatrics

RESUMEN Latinoamérica, al igual que el resto del mundo, se está enfrentando actualmente a las consecuencias del envejecimiento poblacional, entre las que se incluye el aumento en la incidencia de neoplasias malignas en adultos mayores, con un subsecuente incremento en la uso de servicios de salud oncológicos. La oncología geriátrica es una disciplina de reciente creación que suma principios geriátricos a los avances oncológicos para ofrecer un tratamiento individualizado a los adultos mayores con cáncer. Este abordaje multidisciplinario actualmente es recomendado en el cuidado oncológico rutinario en adultos mayores. En Latinoamérica existen varias iniciativas asistenciales de enseñanza e investigación en oncología geriátrica; sin embargo, el número de centros especializados y la disponibilidad de personal capacitado en el área es limitada en comparación con los recursos disponibles en países de ingresos altos. En este trabajo se describen recomendaciones internacionales para la implementación de los principios de la oncología geriátrica en la práctica clínica habitual, los centros y recursos con los que se cuenta en Latinoamérica y los retos a futuro para mejorar la atención multidisciplinaria de los adultos mayores con cáncer en la región.(AU)

ABSTRACT Latin America, like the rest of the world, is currently facing the consequences of population aging. Among these consequences is a rise in incidence in malignant neoplasms among older adults, with an anticipated increase in oncologic health service requirements in this population. Geriatric oncology is a recently created discipline which integrates geriatric principles into oncology care to offer older adults with cancer individualized treatments. This multidisciplinary approach is now recommended as part of routine oncology care by international associations. Although several geriatric oncology clinical, educational and research initiatives exist in Latin America, the number and availability of specialized facilities and personnel is limited in comparison to those in high-income regions. In this manuscript, we review international recommendations for the implementation of geriatric oncology principles into routine clinical practice, describe resources available for geriatric oncology in Latin America, and provide recommendations to improve multidisciplinary care for older adults with cancer in the region.(AU)

[Cancer in older adults in Latin America: interdisciplinary cooperation between oncology and geriatrics]. / Cáncer en el adulto mayor en Latinoamérica: cooperación interdisciplinaria entre oncología y geriatría.

Latin America, like the rest of the world, is currently facing the consequences of population aging. Among these consequences is a rise in incidence in malignant neoplasms among older adults, with an anticipated increase in oncologic health service requirements in this population. Geriatric oncology is a recently created discipline which integrates geriatric principles into oncology care to offer older adults with cancer individualized treatments. This multidisciplinary approach is now recommended as part of routine oncology care by international associations. Although several geriatric oncology clinical, educational and research initiatives exist in Latin America, the number and availability of specialized facilities and personnel is limited in comparison to those in high-income regions. In this manuscript, we review international recommendations for the implementation of geriatric oncology principles into routine clinical practice, describe resources available for geriatric oncology in Latin America, and provide recommendations to improve multidisciplinary care for older adults with cancer in the region.

Latinoamérica, al igual que el resto del mundo, se está enfrentando actualmente a las consecuencias del envejecimiento poblacional, entre las que se incluye el aumento en la incidencia de neoplasias malignas en adultos mayores, con un subsecuente incremento en la uso de servicios de salud oncológicos. La oncología geriátrica es una disciplina de reciente creación que suma principios geriátricos a los avances oncológicos para ofrecer un tratamiento individualizado a los adultos mayores con cáncer. Este abordaje multidisciplinario actualmente es recomendado en el cuidado oncológico rutinario en adultos mayores. En Latinoamérica existen varias iniciativas asistenciales de enseñanza e investigación en oncología geriátrica; sin embargo, el número de centros especializados y la disponibilidad de personal capacitado en el área es limitada en comparación con los recursos disponibles en países de ingresos altos. En este trabajo se describen recomendaciones internacionales para la implementación de los principios de la oncología geriátrica en la práctica clínica habitual, los centros y recursos con los que se cuenta en Latinoamérica y los retos a futuro para mejorar la atención multidisciplinaria de los adultos mayores con cáncer en la región.

Implementation of diagnostic resources for cancer in developing countries: a focus on PET/CT.

Positron emission tomography in conjunction with computed tomography (PET/CT) is a relatively novel diagnostic tool which has been proven to be clinically useful in various neoplasms. Currently, only a handful of developing countries have PET/CT capabilities, and in those that do units are mostly located in large urban areas, which limits their availability. The implementation of PET/CT units in low-and-middle income countries is hampered by their high cost, the difficulties associated with their operation, and the limited availability of trained personnel. Furthermore, although the clinical appropriateness of PET/CT is well defined in many scenarios, little is known about its cost-effectiveness, particularly in settings with limited resources. Here, we provide a brief overview of the challenges associated with the implementation of PET/CT in resource-limited settings, including some examples of available data on its cost-effectiveness.

The Effect of a Geriatric Oncology Clinic on Treatment Decisions in Mexican Older Adults With Cancer.

OBJECTIVES: Geriatric assessment and interventions improve the care of older adults with cancer, but their effect on treatment decision making in resource-limited settings is unknown. We studied the effect of recommendations made by a consultative geriatric oncology clinic on treatment decision making by oncologists in Mexico. DESIGN, SETTING, AND PARTICIPANTS: Retrospective chart review of 173 consecutive patients with solid tumors referred before treatment initiation to the geriatric oncology clinic at a third-level public hospital in Mexico City between March 2015 and October 2017. Patients were evaluated by a multidisciplinary geriatric oncology clinic, and treatment recommendations were issued to treating oncologists. MEASUREMENTS: We determined the overall proportion of agreement between geriatric oncology recommendations and oncologists' treatment decisions. We assessed whether agreement increased when geriatric oncology recommendations were acknowledged in the treating oncologist's clinic note. The homogeneity of agreement was tested using the Stuart-Maxwell test. RESULTS: Median age was 79 years (range = 64-97 years). "Standard treatment" was recommended in 48% of cases, followed by "less intensive treatment" in 32%, and "best supportive care" in 20%. The overall proportion of agreement for the entire population was 80% (κ = 0.69), although agreement was heterogeneous (X2 = 8.16, P = .02). Geriatric oncology recommendations were acknowledged in the treating oncologists' notes in 62% of cases. Overall agreement was higher when the evaluation was acknowledged (83%, κ = 0.74) than when it was not acknowledged (74%, κ = 0.60). Agreement was homogeneous only when recommendations were acknowledged in the oncologist's note (X2 = 3.0, P = .22). CONCLUSIONS: The overall proportion of agreement between geriatric oncology recommendations and final treatment decisions was high, particularly when recommendations were acknowledged in the treating oncologists' note. Including geriatric oncology evaluations in everyday clinical practice and fostering interdisciplinary communication between geriatric oncology and treating oncologists may provide valuable guidance for physicians caring for older patients with cancer in resource-limited settings. J Am Geriatr Soc 67:992-997, 2019.