Richard Lee-Ying

Dr. Richard Lee-Ying

orcid

Research Focus & Metrics

Academic Career Length

15Years (2012-Present)

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

Representative Publications

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7 May 2020 in Cancer Medicine
Verified
Journal Article
Open access
PDF file
AFAndrea S. Fung
Andrea S. Fung
VTVincent C Tam
Vincent C Tam
DMDaniel Meyers
Daniel Meyers
Hao-Wen SimHao-Wen Sim
Hao-Wen Sim
JKJennifer J. Knox
Jennifer J. Knox
RLRichard Lee-Ying
Richard Lee-Ying
Background: The CELESTIAL, RESORCE, and REACH‐2 trials showed survival benefit of cabozantinib, regorafenib, and ramucirumab, respectively, in hepatocellular carcinoma (HCC) patients treated with sorafenib who had good performance status (ECOG 0‐1) and liver function (Child‐Pugh‐A). This study characterizes subsequent treatments received by HCC patients after sorafenib, and determines the proportion of patients eligible for novel therapies if strict eligibility criteria (SEC) were utilized compared to more liberal modified eligibility criteria (MEC, including ECOG 2, Child‐Pugh‐B7).Methods: HCC patients who received sorafenib between 2008 and 2017 were included from the Canadian HCC CHORD Database. Patients were classified as eligible or ineligible based on available CELESTIAL, RESORCE, and REACH‐2 trial SEC or MEC. Median overall survival (mOS) was assessed using the Kaplan‐Meier method.Results: A total of 730 patients were identified; and 172 (23.6%) received subsequent treatment. Patients who received subsequent treatment had longer mOS than those who did not (12.1 vs 3.3 months; P < .001). Using SEC, only 13.1% of patients would be eligible for cabozantinib, regorafenib, or ramucirumab. Expanding eligibility to include patients who meet MEC increased the proportion of eligible patients to 31.7%. Higher ineligibility for regorafenib and ramucirumab was driven by trial‐specific criteria, including sorafenib intolerance (28%) for RESORCE and AFP <400 (58.9%) for REACH‐2.Conclusions: A small proportion of real‐world HCC patients would be eligible for cabozantinib, regorafenib, or ramucirumab if SEC in clinical trials were followed, while more than double would be eligible if MEC were applied. Patients who received subsequent treatment had improved mOS, regardless of whether they met SEC or MEC.

3 July 2018 in Leukemia & Lymphoma
Verified
Journal Article
Closed access
Mita MannaMita Manna
Mita Manna
RLRichard Lee-Ying
Richard Lee-Ying
GDGwynivere Davies
Gwynivere Davies
CSColin Stewart
Colin Stewart
DODanielle H. Oh
Danielle H. Oh
DSDouglas A. Stewart
Douglas A. Stewart
Although chemoimmunotherapy improves outcomes for patients with follicular lymphoma (FL), approximately 20% of patients experience early disease progression within two years of treatment and subsequently poor median survival. We conducted a retrospective study to evaluate survival rates of patients with early relapse who were treated with or without autologous transplantation. Of 517 patients with FL and who received chemoimmunotherapy, 152 relapsed and survived a minimum of four months after progression, including 84 (55.3%) with early relapse ≤2 years following initial therapy and 68 (44.7%) with later relapse. Five-year survival was superior for patients who received autologous transplantation compared to non-transplanted patients within the early relapse group (85.4% vs 57.9%, p = .001), but not within the late relapse group (p = .64). Given the limitations of a retrospective study, our study may suggest that the use of autologous transplantation for FL patients who relapse within two years of initial chemoimmunotherapy is associated with improved survival.

1 December 2021 in European Journal of Surgical Oncology
Verified
Journal Article
Closed access
NBNicholas A. Bosma
Nicholas A. Bosma
AKAlysha R. Keehn
Alysha R. Keehn
RLRichard Lee-Ying
Richard Lee-Ying
SKSafiya Karim
Safiya Karim
AMAnthony R. MacLean
Anthony R. MacLean
DBDarren R. Brenner
Darren R. Brenner

23 May 2012 in Oncology
Verified
Journal Article
Closed access
PDF file
Shahid AhmedShahid Ahmed
Shahid Ahmed
RSR.K. Shahid
R.K. Shahid
HBH. Bhatt
H. Bhatt
RLRichard Lee-Ying
Richard Lee-Ying
JLJae-Kwang Lim
Jae-Kwang Lim
Objectives: Chemotherapy increases the risk of thromboembolism in patients with cancer. Although thrombocytopenia is a known side effect of chemotherapy, reactive thrombocytosis related to chemotherapy is uncommonly reported. The present study aimed to determine the incidence of gemcitabine-related thrombocytosis and the associated risk of thromboembolism. Methods: Medical records of 250 consecutive patients with a malignant disease who received gemcitabine-based therapy were reviewed. A multivariate analysis was done to determine factors associated with thromboembolism. Results: A total of 220 eligible patients with a median age of 63 years (range 26–83) were identified. Of these 220 patients, 95% had advanced malignancy and 59% had received prior chemotherapy. A total of 69% of patients received a platinum combination. In all, 46% patients experienced thrombocytosis following chemotherapy, with a median platelet count of 632 × 109/l (range 457–1,385). Twenty-three of the 220 patients experienced a vascular event within 6 weeks of treatment. Eleven patients with thrombocytosis experienced a vascular event compared with 10 patients without thrombocytosis (not significant). On multivariate analysis, leukocytosis (odds ratio 5.8, 95% confidence interval 2.1–15.8) and comorbid illnesses (odds ratio 4.1, 95% confidence interval 1.4–12.6) were correlated with thromboembolism. Conclusions: Although gemcitabine-based therapy has been associated with an increased incidence of thrombocytosis, it does not increase the risk of thromboembolism in cancer patients. Leukocytosis and comorbid illnesses do increase the risk of thromboembolism.

22 November 2024 in Clinical Genitourinary Cancer
Verified
Journal Article
Open access
RGRichard Gagnon
Richard Gagnon
EKEalia Khosh Kish
Ealia Khosh Kish
SCSarah Cook
Sarah Cook
KTKosuke Takemura
Kosuke Takemura
BCBrian Yu Chieh Cheng
Brian Yu Chieh Cheng
SYSteven Yip
Steven Yip
Neuroendocrine prostate cancer (NEPC) encompasses pure NEPC and tumors with mixed adenocarcinoma and neuroendocrine histology. While NEPC is thought to confer a poor prognosis, outcome data are sparse, making risk stratification and treatment decisions difficult for clinicians. This retrospective study identified patients with morphological and/or immunohistochemical NEPC features on pathological review of high-grade prostate cancer cases. Median overall survival (OS) was calculated by stage and castration sensitivity. Prognostic factors were assessed via multivariate analysis. OS and progression-free survival on first-line metastatic systemic treatment were also evaluated. Of 135 NEPC cases, 25.9% had NEPC documented in the original pathological report. Mixed pathology was found in 91.9% of cases. Median OS from NEPC diagnosis was 59.2, 42.3, 14.3, 17.6 and 9.6 months for localized, nonmetastatic castration-sensitive, nonmetastatic castration-resistant, metastatic castration-sensitive and metastatic castration-resistant prostate cancer, respectively. Anemia (hazard ratio [HR]: 1.66; 95% CI 1.05-2.16; P = .031) and elevated neutrophil-lymphocyte ratio (NLR) (HR: 1.51; 95% CI 1.01-2.52; P = .045), were associated with increased risk of death on multivariate analysis. 67 patients received first-line metastatic treatment beyond androgen deprivation, with a median progression-free survival of 5.2 months and OS of 15 months. Of these, 50.7% received more than 1 line of systemic treatment. We observed underdiagnosis of NEPC in pathology specimens. NEPC is associated with poorer prognosis than would be expected in pure adenocarcinoma populations, with rapid progression on first-line metastatic treatment and sharp drop-off between subsequent treatment lines. Anemia and elevated NLR were associated with poor survival.

5 July 2022 in CMAJ Open
Verified
Journal Article
Open access
PDF file
RLRichard Lee-Ying
Richard Lee-Ying
DODylan E. O’sullivan
Dylan E. O’sullivan
RGRichard Gagnon
Richard Gagnon
NBNicholas Bosma
Nicholas Bosma
RSRebecca N. Stewart
Rebecca N. Stewart
DBDarren Brenner
Darren Brenner
Background: An absence of screening recommendations and the rapid progression of testicular germ cell tumours (TGCTs) offer a perspective on the potential impact of the COVID-19 pandemic on cancer presentations. We evaluated the presenting cancer stages of TGCTs in a real-world population before and during the pandemic to assess stage migration. Methods: We performed a retrospective review of all new patients with TGCT diagnoses in Alberta, Canada, from Dec. 31, 2018, to Apr. 30, 2021, using the Alberta Cancer Registry. Because potential changes in staging should not occur instantaneously, we used a 6-month lag time from Apr. 1, 2020, for seminomas, and a 3-month lag time for nonseminomas, to compare initial cancer stages at presentation before and during the pandemic. We evaluated monthly rates of presentation by stage and histology. Exploratory outcomes included the largest tumour dimension, tumour markers and, for advanced disease, risk category and treatment setting. Results: Of 335 patients with TGCTs, 231 were diagnosed before the pandemic and 104 during the pandemic (using a lag time). In total, 18 (7.8%) patients diagnosed before the pandemic presented with stage III disease, compared to 16 (15.4%) diagnosed during the pandemic (relative risk 1.97, 95% confidence interval [CI] 1.05–3.72). We observed no significant differences for secondary outcomes. Without a lag time, the rate ratio for a stage II presentation decreased significantly during the pandemic (0.40, 95% CI 0.21–0.72). Interpretation: We observed signs of TGCT stage migration during the COVID-19 pandemic, driven by a decline in stage II disease and a potential rise in stage III disease. Management of TGCTs should remain a priority, even during a global pandemic.