Publications by authors named "Narhari Timilshina"

Article Synopsis
  • Older adults with metastatic prostate cancer face significant treatment-related symptoms, and frailty may increase the severity of these symptoms.
  • A study was conducted with 90 participants who reported their symptoms during one treatment cycle, revealing that fatigue, insomnia, and poor wellbeing were the most common issues experienced.
  • The findings indicated that frail participants had higher incidences of poor wellbeing, and while symptom improvement was limited, weekly improvements in fatigue, appetite, and insomnia were noted in those receiving chemotherapy.
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Article Synopsis
  • The study investigates the relationship between physical activity and cancer treatment symptoms in older adults, specifically those over 65 with metastatic prostate cancer starting various treatments.
  • It evaluates the feasibility of daily step count monitoring using smartphones and correlates step counts with treatment-emergent symptoms, finding that many participants experienced significant declines in physical activity along with moderate to severe symptoms.
  • Results indicate that daily monitoring was well-received by participants, showing high retention and engagement, and a notable predictive relationship between decreased physical activity and increased severity of symptoms.
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Introduction: The Geriatric 8 (G8) is a brief cancer-specific tool which screens for patients who require a comprehensive geriatric assessment (CGA). The G8 test assesses patients on eight domains such as mobility, polypharmacy, age, and self-rated health. However, the current G8 requires a healthcare professional (nurse or physician) present to conduct the test, which limits its usefulness.

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  • The study evaluates how well recommendations from the Geriatric Oncology (GO) clinic at Princess Margaret Cancer Center are implemented within six months of initial visits for older cancer patients.
  • A chart review of 100 patients aged 65 and over revealed a median of six recommendations per patient, with high implementation rates (83%) mainly executed by the GO team.
  • The most frequently made recommendations included medication optimization and patient education, with the lowest implementation rates observed for follow-up visits and diagnostic tests due to patient transfer to palliative care or declines in recommendations.
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Background: Although a few studies have reported wide variations in quality of care in active surveillance (AS), there is a lack of research using validated quality indicators (QIs). The aim of this study was to apply evidence-based QIs to examine the quality of AS care at the population level.

Methods: QIs were measured using a population-based retrospective cohort of patients with low-risk prostate cancer diagnosed between 2002 and 2014.

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Introduction: Understanding physical function (PF) and quality of life (QoL) treatment effects are important in treatment decision-making for older adults with cancer. However, data are limited for older men with metastatic castration-resistant prostate cancer (mCRPC). We evaluated the effects of treatment on PF and QoL in older men with mCRPC.

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Article Synopsis
  • A study was conducted to evaluate the feasibility of remote symptom monitoring (RSM) for older adults (65+) undergoing treatments for metastatic prostate cancer (mPC), aiming to improve their health outcomes during chemotherapy and other therapies.
  • Participants completed daily and weekly questionnaires about their symptoms, which triggered alerts to oncologists for any severe symptoms reported.
  • The results showed high engagement with RSM, with 93% response rates, 93% participant satisfaction, and significant reporting of severe symptoms among the elderly, despite some finding it burdensome.
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Introduction: As treatment options for metastatic castration-resistant prostate cancer (mCRPC) expand and its patient population ages, consideration of frailty is increasingly relevant. Using a novel frailty index (FI) and two common frailty screening tools, we examined quality of life (QoL) and physical function (PF) in frail versus non-frail men receiving treatment for mCRPC.

Materials And Methods: Men aged 65+ starting docetaxel chemotherapy, abiraterone, or enzalutamide for mCRPC were enrolled in a multicenter prospective cohort study.

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Introduction: In multiple settings, sex disparities have been seen in diagnosis, treatment, and outcomes. This study sought to determine whether there are sex differences in a geriatric oncology clinic concerning results of the comprehensive geriatric assessment (CGA) and treatment recommendations.

Materials And Methods: This is a retrospective cohort study including patients ≥65 years old referred for consultation on cancer treatment decision-making who underwent a CGA between July 2015 and December 2020, in a single Canadian academic geriatric oncology (GO) clinic.

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The frailty index (FI) predicts clinical outcomes in oncology. However, in the acute myeloid leukemia (AML) setting, its predictive ability is poorly understood. We assessed whether the FI predicts complete remission (CR), intensive care unit (ICU) admission, and 1-year all-cause mortality in younger and older adults with AML receiving intensity chemotherapy.

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Background: Grip strength (GS) and the Short Physical Performance Battery (SPPB) are brief objective tests used during a comprehensive geriatric assessment (CGA) to assess physical performance. Abnormal GS and SPPB scores are associated with greater morbidity and mortality in older adults with cancer but their relationship with chemotherapy tolerability is unclear. We explored the performance of GS and SPPB in predicting therapy delay, dose reduction, and treatment completion in older adults undergoing chemotherapy or chemoradiation.

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Introduction: A comprehensive geriatric assessment (CGA) is recommended for older adults with cancer in the pre-treatment setting to optimize care. A CGA systematically evaluates multiple domains to develop a holistic view of the patient's health and facilitate timely interventions to ameliorate patient outcomes. For a CGA to be most effective, optimization of each abnormal domain should occur.

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Introduction: Although many low-risk prostate cancer (PCa) patients worldwide currently receive active surveillance (AS), adherence to clinical guidelines on AS and variations in care at the population level remain poorly understood. We sought to develop system-level quality indicators (QIs) and performance measures for benchmarking the quality of care during AS.

Methods: Convenience sampling methods were used to identify an expert panel among practicing urologists and radiation oncologists across Canada.

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Introduction: Earlier application of oral androgen receptor-axis-targeted therapies in patients with metastatic castration-sensitive prostate cancer (mCSPC) has established improvements in overall survival, as compared to androgen deprivation therapy (ADT) alone. Recently, the use of apalutamide plus ADT has demonstrated improvement in mCSPC-related mortality vs. ADT alone, with an acceptable toxicity profile.

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Importance: Older adults are at greater risk of cognitive decline with various oncologic therapies. Some commonly used therapies for advanced prostate cancer, such as enzalutamide, have been linked to cognitive impairment, but published data are scarce, come from single-group studies, or focus on self-reported cognition.

Objective: To longitudinally examine the association between cognitive function and docetaxel (chemotherapy), abiraterone, enzalutamide, and radium Ra 223 dichloride (radium 223) in older men with metastatic castration-resistant prostate cancer.

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Background: Because multiple treatments are available for metastatic castrate-resistant prostate cancer (mCRPC) and most patients are elderly, the prediction of toxicity risk is important. The Cancer and Aging Research Group (CARG) tool predicts chemotherapy toxicity in older adults with mixed solid tumors, but has not been validated in mCRPC. In this study, its ability to predict toxicity risk with docetaxel chemotherapy (CHEMO) was validated, and its utility was examined in predicting toxicity risk with abiraterone or enzalutamide (A/E) among older adults with mCRPC.

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Background: The Vulnerable Elders Survey (VES-13) is commonly used to identify older patients who may benefit from Comprehensive Geriatric Assessment (CGA) prior to cancer treatment. The optimal cut point of the VES-13 to identify those whose final oncologic treatment plan would change after CGA is unclear. We hypothesized that patients with high positive VES-13 scores (7-10)have a higher likelihood of a change in treatment compared to low positive scores (3-6).

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Purpose: Pathological and oncologic outcomes of delayed radical prostatectomy following prostate cancer active surveillance are not well established. We determined the pathological and oncologic outcomes of favorable risk, Grade Group 1, prostate cancer managed with active surveillance and progressing to radical prostatectomy for clinically significant prostate cancer (Grade Group 2 or greater).

Materials And Methods: Between 1992 and 2015, 170 men with favorable risk prostate cancer underwent delayed radical prostatectomy for clinically significant prostate cancer (ASRP) at the Princess Margaret Cancer Centre.

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Background: Androgen deprivation therapy (ADT) for prostate cancer (PCa) is associated with metabolic perturbations and declines in bone mineral density (BMD). Exercise interventions provide multiple health benefits to older men on ADT; however, their effect on metabolic biomarkers and BMD remains unclear.

Methods: A secondary analysis of a phase II randomized controlled trial was conducted to assess the effect of a six-month moderate-intensity aerobic and resistance exercise program on metabolic biomarkers and BMD in men on ADT.

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Introduction: Active surveillance (AS) is an accepted management strategy for low-risk prostate cancer (PCa), but its role in the management of favorable intermediate-risk PCa remains controversial. Most reports studying the role of AS for these men generally lack long-term followup and include small numbers of patients. Our objective was to report the outcomes of men diagnosed with Gleason grade groups (GGG) 2 and 3 PCa who were managed expectantly.

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Objectives: We determined whether cytokines are a potential target to improve cancer-related fatigue (CRF) and quality of life (QOL) in acute myeloid leukemia (AML).

Methods: 219 patients age 18+ undergoing intensive chemotherapy for AML were assessed at up to 4 time points (pre-treatment, 1 month, 6 months, 12 months). CRF and QOL were assessed with validated patient-reported outcome measures with minimum clinically important differences (MCID) of 4 and 10 points, respectively.

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Background: Existing evidence demonstrates that 1:1 personal training (PT) improves many adverse effects of androgen deprivation therapy (ADT). Whether less resource-intensive exercise delivery models are as effective remains to be established. We determined the feasibility of conducting a multi-center non-inferiority randomized controlled trial comparing PT with supervised group (GROUP) and home-based (HOME) exercise programs, and obtained preliminary efficacy estimates for GROUP and HOME compared to PT on quality of life (QOL) and physical fitness.

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Purpose: Geriatric assessment (GA) is recommended for older adults ≥ 70 years with cancer to guide treatment selection. Screening tools such as the Vulnerable Elders Survey (VES-13) and G6 have been used to identify patients at highest need of GA. Whether either tool predicts a change in oncologic treatment following GA is unclear.

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