Characterizing cancer cachexia in the geriatric oncology population.

OBJECTIVES: Cancer cachexia, characterized by weight loss and sarcopenia, leads to a decline in physical function and is associated with poorer survival. Cancer cachexia remains poorly described in older adults with cancer. This study aims to characterize cancer cachexia in older adults by assessing its prevalence utilizing standard definitions and evaluating associations with components of the geriatric assessment (GA) and survival. MATERIALS AND METHODS: Patients with cancer older than 65 years of age who underwent a GA and had baseline CT imaging were eligible in this cross-sectional study. Cancer cachexia was defined by the international consensus definition reported in 2011. Sarcopenia was measured using cross-sectional imaging and utilizing sex-specific cut-offs. Associations between cachexia, sarcopenia, and weight loss with survival and GA domains were explored. RESULTS: Mean age of 100 subjects was 79.9 years (66-95) and 65% met criteria for cancer cachexia. Cachexia was associated with impairment in instrumental activities of daily living (IADL) (p = .017); no significant association was found between sarcopenia or weight loss and IADL impairment. Cachexia was significantly associated with poorer survival (median 1.0 vs 2.1 years, p = .011). CONCLUSIONS: Cancer cachexia as defined by the international consensus definition is prevalent in older adults with cancer and is associated with functional impairment and decreased survival. Larger prospective studies are needed to further describe cancer cachexia in this population.

Novel mHealth App to Deliver Geriatric Assessment-Driven Interventions for Older Adults With Cancer: Pilot Feasibility and Usability Study.

BACKGROUND: Older patients with cancer are at an increased risk of adverse outcomes. A geriatric assessment (GA) is a compilation of reliable and validated tools to assess domains that are predictors of morbidity and mortality, and it can be used to guide interventions. However, the implementation of GA and GA-driven interventions is low due to resource and time limitations. GA-driven interventions delivered through a mobile app may support the complex needs of older patients with cancer and their caregivers. OBJECTIVE: We aimed to evaluate the feasibility and usability of a novel app (TouchStream) and to identify barriers to its use. As an exploratory aim, we gathered preliminary data on symptom burden, health care utilization, and satisfaction. METHODS: In a single-site pilot study, we included patients aged ≥65 years undergoing treatment for systemic cancer and their caregivers. TouchStream consists of a mobile app and a Web portal. Patients underwent a GA at baseline with the study team (on paper), and the results were used to guide interventions delivered through the app. A tablet preloaded with the app was provided for use at home for 4 weeks. Feasibility metrics included usability (system usability scale of >68 is considered above average), recruitment, retention (number of subjects consented who completed postintervention assessments), and percentage of days subjects used the app. For the last 8 patients, we assessed their symptom burden (severity and interference with 17-items scored from 0-10 where a higher score indicates worse symptoms) using a clinical symptom inventory, health care utilization from the electronic medical records, and satisfaction (6 items scored on a 5-point Likert Scale for both patients and caregivers where a higher score indicates higher satisfaction) using a modified satisfaction survey. Barriers to use were elicited through interviews. RESULTS: A total of 18 patients (mean age 76.8, range 68-87) and 13 caregivers (mean age 69.8, range 38-81) completed the baseline assessment. Recruitment and retention rates were 67% and 80%, respectively. The mean SUS score was 74.0 for patients and 72.2 for caregivers. Mean percentage of days the TouchStream app was used was 78.7%. Mean symptom severity and interference scores were 1.6 and 2.8 at preintervention, and 0.9 and 1.5 at postintervention, respectively. There was a total of 27 clinic calls during the intervention period and 15 during the postintervention period (week 5-8). One patient was hospitalized during the intervention period (week 1-4) and two patients during the postintervention period (week 5-8). Mean satisfaction scores of patients and caregivers with the mobile app were 20.4 and 23.4, respectively. Barriers fell into 3 themes: general experience, design, and functionality. CONCLUSIONS: TouchStream is feasible and usable for older patients on cancer treatment and their caregivers. Future studies should evaluate the effects of the TouchStream on symptoms and health care utilization in a randomized fashion.