Alexander Sun

Alexander Sun


Research Focus & Metrics

Academic Career Length

22Years (2005-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
20 January 2011 in Journal of Clinical Oncology
Verified
Journal Article
Closed access
ASAlexander Sun
Alexander Sun
KBKyounghwa Bae
Kyounghwa Bae
EGElizabeth M. Gore
Elizabeth M. Gore
BMBenjamin Movsas
Benjamin Movsas
SWStuart J. Wong
Stuart J. Wong
HCHak Choy
Hak Choy
Purpose: There are scant data regarding the effects of prophylactic cranial irradiation (PCI) on neurocognitive function (NCF) and quality of life (QOL). Radiation Therapy Oncology Group trial 0214 showed no overall survival (OS) benefit for PCI in stage III non–small-cell lung cancer (NSCLC) at 1 year. However, there was a significant decrease in brain metastases (BM). This analysis focuses on the impact of PCI on NCF and QOL. Patients and Methods: Patients with stage III NSCLC who completed definitive therapy without progression were randomly assigned to PCI or observation. NCF was assessed with Mini-Mental Status Examination (MMSE), Activities of Daily Living Scale (ADLS), and Hopkins Verbal Learning Test (HVLT). QOL was assessed with the European Organisation for Research and Treatment of Cancer (EORTC) core tool (QOL Questionnaire-QLQC30) and brain module (QLQBN20). Results: There were no statistically significant differences at 1 year between the two arms in any component of the EORTC-QLQC30 or QLQBN20 (P > .05), although a trend for greater decline in patient-reported cognitive functioning with PCI was noted. There were no significant differences in MMSE (P = .60) or ADLS (P = .88). However, for HVLT, there was greater decline in immediate recall (P = .03) and delayed recall (P = .008) in the PCI arm at 1 year. Conclusion: PCI in stage III NSCLC significantly decreases the risk of BM without improving 1-year OS. There were no significant differences in global cognitive function (MMSE) or QOL after PCI, but there was a significant decline in memory (HVLT) at 1 year. This study provides prospective data regarding the relative risks and benefits of PCI in this setting and the need to use sensitive cognitive assessments.

1 August 2016 in Journal of Oncology Practice
Verified
Journal Article
Closed access
PDF file
ASAlexander Sun
Alexander Sun
EKErin B. Kennedy
Erin B. Kennedy
NBNelson Byrne
Nelson Byrne
CGCaroline Gérin-Lajoie
Caroline Gérin-Lajoie
MKMark R. Katz
Mark R. Katz
EGEsther Green
Esther Green
Purpose: This report updates the Cancer Care Ontario Program in Evidence-Based Care guideline for the management of depression in adult patients with cancer. This guideline covers pharmacologic, psychological, and collaborative care interventions, with a focus on integrating practical management tools to assist clinicians in delivering appropriate treatments for depression in patients with cancer. Methods: Recommendations were developed by synthesizing information from extant guidelines and reviews and searching for randomized controlled trials from the date of database inception (1964 for MEDLINE and 1974 for EMBASE) to January 2015. Quality assessment of guidelines and systematic reviews were conducted by using the Appraisal of Guidelines for Research and Evaluation II (AGREE II), Assessment of Multiple Systematic Reviews (AMSTAR), and Cochrane Risk of Bias tools. Final recommendations were developed through a standardized Program in Evidence-Based Care multidisciplinary expert and knowledge user review process. Results: Two high-quality relevant clinical practice guidelines, eight pharmacologic trials, nine psychological trials, and eight collaborative care intervention trials composed the evidence base upon which the recommendations were developed. Eight specific recommendations were made to establish a standard of care for the management of depression in patients with cancer. The recommendations and practical management tools were reviewed as being well organized and helpful, although systemic barriers to implementation were identified. Conclusion: This updated guideline supports the previous general recommendation that patients with cancer who have depression may benefit from psychological and/or pharmacologic interventions, without evidence for the superiority of any specific treatment over another. New recommendations for a collaborative care model that incorporates a stepped care approach suggest that multidisciplinary mental health care restructuring may be required for optimal management of depression.

1 May 2005 in Gynecologic Oncology
Verified
Journal Article
Closed access
PDF file
ASAlexander Sun
Alexander Sun
ACAlexandra Chambers
Alexandra Chambers
MFMichael Fung Kee Fung
Michael Fung Kee Fung
SVShailendra Verma
Shailendra Verma

1 October 2018 in Clinical Oncology
Verified
Journal Article
Closed access
ASAlexander Sun
Alexander Sun
LDL.D. Durocher-Allen
L.D. Durocher-Allen
PEPeter Ellis
Peter Ellis
YUY.C. Ung
Y.C. Ung
JGJ.R. Goffin
J.R. Goffin
GDG. Darling
G. Darling

1 February 2016 in Journal of Thoracic Oncology
Verified
Journal Article
Closed access
QMQurrat Mehmood
Qurrat Mehmood
ASAlexander Sun
Alexander Sun
NBNathan Becker
Nathan Becker
JHJane Higgins
Jane Higgins
AMAndrea Marshall
Andrea Marshall
JBJean-Pierre Bissonnette
Jean-Pierre Bissonnette

15 July 2021 in Current Oncology
Verified
Journal Article
Open access
PDF file
EGEnrique Gutierrez
Enrique Gutierrez
Irving Sanchez-RodriguezIrving Sanchez-Rodriguez
Irving Sanchez-Rodriguez
Omar Diaz CazaresOmar Diaz Cazares
Omar Diaz Cazares
AVAdrián Valles
Adrián Valles
Ricardo Balderrama IbarraRicardo Balderrama Ibarra
Ricardo Balderrama Ibarra
ASAlexander Sun
Alexander Sun
Lung metastases are the second most common malignant neoplasms of the lung. It is estimated that 20–54% of cancer patients have lung metastases at some point during their disease course, and at least 50% of cancer-related deaths occur at this stage. Lung metastases are widely accepted to be oligometastatic when five lesions or less occur separately in up to three organs. Stereotactic body radiation therapy (SBRT) is a noninvasive, safe, and effective treatment for metastatic lung disease in carefully selected patients. There is no current consensus on the ideal dose and fractionation for SBRT in lung metastases, and it is the subject of study in ongoing clinical trials, which examines different locations in the lung (central and peripheral). This review discusses current indications, fractionations, challenges, and technical requirements for lung SBRT.