David D. W. Twa

ORCID: 0000-0003-0086-1938
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About
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Research Areas
  • Lymphoma Diagnosis and Treatment
  • COVID-19 Clinical Research Studies
  • Chronic Lymphocytic Leukemia Research
  • Health and Medical Research Impacts
  • CNS Lymphoma Diagnosis and Treatment
  • Innovations in Medical Education
  • SARS-CoV-2 and COVID-19 Research
  • Immune Cell Function and Interaction
  • Diversity and Career in Medicine
  • SARS-CoV-2 detection and testing
  • Cancer Genomics and Diagnostics
  • Genetic factors in colorectal cancer
  • Viral-associated cancers and disorders
  • Biosensors and Analytical Detection
  • Systemic Lupus Erythematosus Research
  • Long-Term Effects of COVID-19
  • Complementary and Alternative Medicine Studies
  • Radiopharmaceutical Chemistry and Applications
  • Respiratory viral infections research
  • Protein Degradation and Inhibitors
  • Bacterial Genetics and Biotechnology
  • Lung Cancer Treatments and Mutations
  • Bioinformatics and Genomic Networks
  • Immunodeficiency and Autoimmune Disorders
  • CAR-T cell therapy research

University of British Columbia
2014-2022

BC Cancer Agency
2013-2021

University of Calgary
2021

BC Centre for Disease Control
2021

Spinal Cord Injury BC
2020

McMaster University
2017

University of Manitoba
2017

University of Alberta
2017

McGill University
2017

University of Toronto
2017

Abstract Primary testicular diffuse large B cell lymphoma ( PTL ) is an aggressive malignancy that occurs in the immune‐privileged anatomical site of testis. We have previously shown structural genomic rearrangements involving MHC class II transactivator CIITA and programmed death ligands PDLs 1 2 are frequent across multiple entities. Specifically , we found PDL locus by fluorescence situ hybridization FISH ). However, breakpoint anatomy rearrangement partners were undetermined, while had...

10.1002/path.4522 article EN The Journal of Pathology 2015-02-25

BackgroundAngiotensin converting enzyme 2 (ACE2) protein serves as the host receptor for SARS-CoV-2, with a critical role in viral infection. We aim to understand population level variation of nasopharyngeal ACE2 transcription people tested COVID-19 and relationship between SARS-CoV-2 load, while adjusting expression of: (i) complementary protease, Transmembrane serine protease (TMPRSS2), (ii) soluble ACE2, (iii) age, (iv) biological sex. The gene was targeted measure transmembrane...

10.1016/j.ebiom.2021.103316 article EN cc-by-nc-nd EBioMedicine 2021-04-01

Context MD/PhD programmes provide structured paths for physician-scientist training. However, considerable proportions of graduates these do not pursue careers in research consistent with their Objectives We sought to identify factors associated sustained involvement after completion all postgraduate Methods Anonymised data from a national survey Canadian programme who had completed training (n = 70) were analysed. Multivariable logistic regression was used measure the associations between...

10.1111/medu.13513 article EN Medical Education 2018-03-13

Combined MD/PhD programs provide a structured path for physician-scientist training, but assessment of their success within Canada is limited by lack quantitative data. We collected outcomes data graduates Canadian programs. developed and implemented Web-based survey consisting 41 questions designed to collect program alumni from 8 universities who had graduated before September 2015. Respondents were categorized into 2 groups according whether they or not completed all training. Of the 186...

10.9778/cmajo.20160152 article EN CMAJ Open 2017-04-01

Abstract Tumour‐promoting inflammation is an emerging hallmark of cancer that increasingly recognised as a therapeutic target. As constituent measure inflammation, tumour‐infiltrating neutrophils (TINs) have been associated with inferior prognosis in several cancers. We analysed clinically annotated cohorts clear cell renal carcinoma (ccRCC) to assess the presence within tumour microenvironment function outcome. centrally reviewed ccRCC surgical resection and fine‐needle aspiration (FNA)...

10.1002/cjp2.204 article EN cc-by The Journal of Pathology Clinical Research 2021-03-04

SLE is associated with increased risk of diffuse large B-cell lymphoma (DLBCL). DLBCL routinely classified by cell origin (COO), germinal centre (GCB) being more common and indicating better prognosis in the general population. We studied COO subtyping patients diagnosed their survival.We evaluated 20 cases DLBCL. Immunohistochemistry analysis was performed (BCL2, MYC, BCL6, CD10, CD20, FOXP1, GCET1, MUM1) tissue microarrays. examined associations between molecular clinical features,...

10.1136/lupus-2019-000324 article EN cc-by-nc Lupus Science & Medicine 2019-05-01

Abstract In this study, we evaluate the impact of whole genome and transcriptome analysis (WGTA) on predictive molecular profiling histologic diagnosis in a cohort advanced malignancies. WGTA was used to generate reports including alterations site/tissue origin prediction. Two reviewers analyzed genomic reports, clinical history, tumor pathology. We National Comprehensive Cancer Network (NCCN) consensus guidelines, Food Drug Administration (FDA) approvals, provincially reimbursed treatments...

10.1002/cjp2.265 article EN cc-by-nc-nd The Journal of Pathology Clinical Research 2022-03-08

Although MD/PhD programs require considerable commitment on behalf of students and learning institutions, they serve as an integral means training future physician-scientists; individuals who engage in translational medicine. As attrition from these has longstanding effects the community medicine comes at substantial cost to programs, we aimed identify determinants that were associated with satisfaction among graduates, a feature might inform limiting program attrition. Anonymized data...

10.1371/journal.pone.0185218 article EN cc-by PLoS ONE 2017-09-28

The COVID-19 pandemic has highlighted the need for generic reagents and flexible systems in diagnostic testing. Magnetic bead-based nucleic acid extraction protocols using 96-well plates on open liquid handlers are readily amenable to meet this need. Here, one such approach is rigorously optimized minimize cross-well contamination while maintaining sensitivity.

10.1016/j.jviromet.2021.114339 article EN cc-by Journal of Virological Methods 2021-10-21

Searchable abstracts of presentations at key conferences in endocrinology ISSN 1470-3947 (print) | 1479-6848 (online)

10.1530/endoabs.101.ps2-11-05 article EN Endocrine Abstracts 2024-08-26

Abstract Introduction: Primary mediastinal large B cell lymphoma (PMBCL) is a distinct subtype of aggressive that arises from thymic medullary cells and characteristically presents as mass in the anterior mediastinum. A proportion PMBCL patients suffer refractory or relapsing disease, subsequent salvage therapies are frequently ineffective. Development targeted impeded by lack knowledge about mutational landscape genomes mutation-associated phenotypes. We recently reported somatic mutations...

10.1158/1538-7445.am2015-3941 article EN Cancer Research 2015-08-01

Summary Background Angiotensin converting enzyme 2 ( ACE2 ) serves as the host receptor for SARS-CoV-2, with a critical role in viral infection. We aim to understand population level variation of nasopharyngeal expression people tested COVID-19 and relationship between SARS-CoV-2 RNA load, while adjusting complementary protease, Transmembrane serine protease TMPRSS2) , soluble age, biological sex. Methods A cross-sectional study n=424 participants aged 1-104 years referred testing was...

10.1101/2020.11.23.20237206 preprint EN cc-by-nc-nd medRxiv (Cold Spring Harbor Laboratory) 2020-11-24
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