Jenny J Ko

Dr. Jenny J Ko

British Columbia Cancer Agency, Vancouver, BC, Canada

Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

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

Representative Publications

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1 July 2019 in Lung Cancer
Verified
Journal Article
Closed access
BMBarbara Melosky
Barbara Melosky
PBPenelope Bradbury
Penelope Bradbury
DTDongsheng Tu
Dongsheng Tu
MFMarie Florescu
Marie Florescu
ARAnthony Reiman
Anthony Reiman
LSLesley Seymour
Lesley Seymour

29 September 2021 in Current Oncology
Verified
Journal Article
Open access
PDF file
ABArshia Beigi
Arshia Beigi
SVSaba Vafaei-Nodeh
Saba Vafaei-Nodeh
LHLonglong Huang
Longlong Huang
SSShaun Sun
Shaun Sun
JKJenny J Ko
Jenny J Ko
Background: Real-world data on palliative systemic therapies (PST) in treating metastatic bladder cancer (mBC) is limited. This study investigates current trends in treating mBC with first- (1L) and second-line (2L) chemotherapy (CT) and immunotherapy (IT). Methods: A chart review was conducted on patients diagnosed with stage II-IV bladder cancer in 2014–2016. Survival outcomes were compared between chemotherapy, immunotherapy, and supportive care. Results: out of 297 patients, 77% were male. 44% had stage IV disease at diagnosis. Median age at metastasis was 73 years. 40% of patients received 1L PST and 34% received 2L PST. Median overall survival (mOS) was longer in those receiving PST versus no treatment (p < 0.001). Patients receiving CT and IT sequentially had the longest mOS (18.99 months). First-line IT and CT mOS from treatment start dates were 5.03 and 9.13 months, respectively (p = 0.81). Gemcitabine with cisplatin (8.88 months) or carboplatin (9.13 months) were the most utilized 1L chemotherapy regimens (p = 0.85). 2L IT and CT mOS from treatment start dates were 6.72 and 3.78 months, respectively (p = 0.15). Conclusion: real-world mOS of >1.5 years in mBC is unprecedented and supports using multiple lines of PST. Furthermore, immunotherapy may be a comparable alternative to chemotherapy in both 1L and 2L settings.

14 February 2019 in BMC Cancer
Verified
Journal Article
Open access
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OKOmar Farooq Khan
Omar Farooq Khan
ECEllen Cusano
Ellen Cusano
SRSoundouss Raissouni
Soundouss Raissouni
MPMica Pabia
Mica Pabia
JHJohanna Haeseker
Johanna Haeseker
PTPatricia Tang
Patricia Tang
Cognitive impairment is commonly reported in patients receiving chemotherapy, but the acuity of onset is not known. This study utilized the psychomotor vigilance test (PVT) and trail-making test B (TMT-B) to assess cognitive impairment immediately post-chemotherapy. Patients aged 18–80 years receiving first-line intravenous chemotherapy for any stage of breast or colorectal cancer were eligible. Patient symptoms, peripheral neuropathy and Stanford Sleepiness Scale were assessed. A five-minute PVT and TMT-B were completed on a tablet computer pre-chemotherapy and immediately post-chemotherapy. Using a mixed linear regression model, changes in reciprocal transformed PVT reaction time (mean 1/RT) were assessed. A priori, an increase in median PVT reaction times by > 20 ms (approximating PVT changes with blood alcohol concentrations of 0.04–0.05 g%) was considered clinically relevant. One hundred forty-two cancer patients (73 breast, 69 colorectal, median age 55.5 years) were tested. Post-chemotherapy, mean 1/RT values were significantly slowed compared to pre-chemotherapy baseline (p = 0.01). This corresponded to a median PVT reaction time slowed by an average of 12.4 ms. Changes in PVT reaction times were not correlated with age, sex, cancer type, treatment setting, or use of supportive medications. Median post-chemotherapy PVT reaction time slowed by an average of 22.5 ms in breast cancer patients and by 1.6 ms in colorectal cancer patients. Post-chemotherapy median PVT times slowed by > 20 ms in 57 patients (40.1%). Exploratory analyses found no statistically significant association between the primary outcome and self-reported anxiety, fatigue or depression. TMT-B completion speed improved significantly post-chemotherapy (p = 0.03), likely due to test-retest phenomenon. PVT reaction time slowed significantly immediately post-chemotherapy compared to a pre-chemotherapy baseline, and levels of impairment similar to effects of alcohol consumption in other studies was seen in 40% of patients. Further studies assessing functional impact of cognitive impairment on patients immediately after chemotherapy are warranted.

16 November 2018 in Cold Spring Harbor Molecular Case Studies
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Journal Article
Open access
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JKJenny J Ko
Jenny J Ko
JGJasleen K. Grewal
Jasleen K. Grewal
TNTony Ng
Tony Ng
JLJean-Michel Lavoie
Jean-Michel Lavoie
MTMy Linh Thibodeau
My Linh Thibodeau
MMMarco Marra
Marco Marra
Thyroid-like follicular renal cell carcinoma (TLFRCC) is a rare cancer with few reports of metastatic disease. Little is known regarding genomic characteristics and therapeutic targets. We present the clinical, pathologic, genomic, and transcriptomic analyses of a case of a 27-yr-old male with TLFRCC who presented initially with bone metastases of unknown primary. Genomic DNA from peripheral blood and metastatic tumor samples were sequenced. A transcriptome of 280 million sequence reads was generated from the same tumor sample. Tumor somatic expression profiles were analyzed to detect aberrant expression. Genomic and transcriptomic data sets were integrated to reveal dysregulation in pathways and identify potential therapeutic targets. Integrative genomic analysis with The Cancer Genome Atlas (TCGA) data set revealed the following outliers in gene expression profiles: CDK6 (81st percentile), MYC (99th percentile), AR (100th percentile), PDGFRA and PDGFRB (99th and 100th percentiles, respectively), and MAP2K2 (86th percentile). The patient received first-line sunitinib to target PDGFRA and PDGFRB and had stable disease for >6 mo, followed by nivolumab upon progression. To the authors’ knowledge, this is the first reported case of comprehensive somatic genomic analyses in a patient with metastatic TLFRCC. Somatic analyses provided molecular confirmation of the primary site of cancer and potential therapeutic strategies in a rare disease with little evidence of efficacy on systemic therapy.

17 June 2015 in Journal of the National Comprehensive Cancer Network
Verified
Journal Article
Open access
PDF file
CRCindy Railton
Cindy Railton
SLSasha Lupichuk
Sasha Lupichuk
JMJennifer McCormick
Jennifer McCormick
LZLihong Zhong
Lihong Zhong
JKJenny J Ko
Jenny J Ko
JGJanine Giese-Davis
Janine Giese-Davis
Purpose: Oncology centers in public health systems often transfer routine follow-up of patients with early-stage breast cancer (BC) to primary care physicians because of the increasing numbers of survivors and evidence supporting the safety of this practice. After transfer of care, it is unknown how BC survivors fare with treatment and surveillance goals, and whether they have unmet needs for access to specialist care. This study conducted in a sample of women in Alberta, Canada, examined adherence with follow-up guidelines, symptoms, and need for a telephone-based survivorship clinic. Methods: Through the Alberta Cancer Registry, we randomly invited women with stage I–III invasive BC (N=960) to participate. Of those, 272 responded, and 240 consented to a structured telephone interview and chart review. Results: Women adhered well to follow-up guidelines for mammogram, but less so for clinical examination and endocrine therapy (ET). However, most patients reported ongoing bothersome symptoms, which tended to be higher in those not on ET. More than one-third of patients reported ongoing needs (managing weight, side effects, exercise adherence, and psychosocial health). Younger, fatigued or depressed, nonurban women not on ET reported the most need for a telephone clinic. Conclusions: Adherence with follow-up goals (examination, mammography, ET) was better than expected. Despite this, interest in a telephone survivorship clinic was high. Perceived needs included symptom management plus support for lifestyle behavior change. Medical follow-up needs might be well-met by discharge to primary care. However, high levels of ongoing symptoms and psychosocial needs would suggest that telephone-based survivorship clinics, psychosocial and exercise interventions, or transition programs might benefit the survivorship experience of patients with BC. Purpose: Oncology centers in public health systems often transfer routine follow-up of patients with early-stage breast cancer (BC) to primary care physicians because of the increasing numbers of survivors and evidence supporting the safety of this practice. After transfer of care, it is unknown how BC survivors fare with treatment and surveillance goals, and whether they have unmet needs for access to specialist care. This study conducted in a sample of women in Alberta, Canada, examined adherence with follow-up guidelines, symptoms, and need for a telephone-based survivorship clinic. Methods: Through the Alberta Cancer Registry, we randomly invited women with stage I–III invasive BC (N=960) to participate. Of those, 272 responded, and 240 consented to a structured telephone interview and chart review. Results: Women adhered well to follow-up guidelines for mammogram, but less so for clinical examination and endocrine therapy (ET). However, most patients reported ongoing bothersome symptoms, which tended to be higher in those not on ET. More than one-third of patients reported ongoing needs (managing weight, side effects, exercise adherence, and psychosocial health). Younger, fatigued or depressed, nonurban women not on ET reported the most need for a telephone clinic. Conclusions: Adherence with follow-up goals (examination, mammography, ET) was better than expected. Despite this, interest in a telephone survivorship clinic was high. Perceived needs included symptom management plus support for lifestyle behavior change. Medical follow-up needs might be well-met by discharge to primary care. However, high levels of ongoing symptoms and psychosocial needs would suggest that telephone-based survivorship clinics, psychosocial and exercise interventions, or transition programs might benefit the survivorship experience of patients with BC.

20 June 2025 in Clinical Cancer Research
Verified
Journal Article
Closed access
GVGillian Vandekerkhove
Gillian Vandekerkhove
AMAndrew J. Murtha
Andrew J. Murtha
DMDavid C. Müller
David C. Müller
MSMaria Stephenson
Maria Stephenson
KRKimia Rostin
Kimia Rostin
AWAlexander W. Wyatt
Alexander W. Wyatt
Purpose: HER2 targeting is increasingly relevant in metastatic urothelial cancer (mUC) because of emerging antibody–drug conjugates, in which assessment of tumor HER2/ERBB2 status could aid interpretation of ongoing trials. We evaluated whether precise ERBB2 genotype can be determined from mUC ctDNA and the relationship with tissue status. Experimental Design: ERBB2 genotype was determined through targeted sequencing of longitudinal samples from 226 patients with mUC. Heterogeneity was evaluated across ctDNA and metachronous tumor tissue ERBB2 genotype and compared with HER2 IHC. Results: Activating ERBB2 mutation and/or amplification was identified in 16% and 29% of patients by ctDNA and tissue sequencing, respectively. Alternatively, 55% of tissue samples were HER2 IHC positive. Agreement between HER2 IHC and ERBB2 genotype (by either ctDNA or tissue) was 64%, in contrast to 87% between patient-matched ctDNA and tissue genotypes. Across serial samples, genotype and IHC revealed marked heterogeneity in ERBB2 status. Factors linked with heterogeneity included ERBB2 amplifications on extrachromosomal DNA, detected through whole-genome sequencing of ctDNA and FISH, and subclonal ERBB2 mutations, which were evident in half of ctDNA and one-third of tissue samples. Conclusions: We report a combined analysis of HER2 IHC and ERBB2 genotype in mUC ctDNA and archival tissue, revealing high spatiotemporal heterogeneity. Our data suggest that sole reliance on DNA- or protein-based HER2 assessment is insufficient to capture nuanced genomic indicators of HER2 pathway reliance and support a role for ctDNA alongside existing methods for characterizing HER2/ERBB2 status during biomarker development in mUC.