Publications by authors named "Emmanuel Ewara"

There is limited information on the treatment trajectory and outcomes of patients with advanced cEGFRm NSCLC treated with osimertinib in routine clinical practice in Canada. By using and analyzing population-based administrative data and detailed chart abstraction in the province of Alberta, our objective was to capture Canadian-specific real-world treatment patterns, health outcomes, and healthcare resource utilization (HCRU) in advanced cEGFRm NSCLC patients who were (a) treated with osimertinib and (b) those receiving treatment after osimertinib. In our study cohort, we found that the overall survival rates for real-world patients receiving osimertinib were less favorable than those observed in clinical trials (24.

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Real-world evidence for patients with advanced -mutated non-small cell lung cancer (NSCLC) in Canada is limited. This study's objective was to use previously validated DARWEN artificial intelligence (AI) to extract data from electronic heath records of patients with non-squamous NSCLC at University Health Network (UHN) to describe mutation prevalence, treatment patterns, and outcomes. Of 2154 patients with NSCLC, 613 had advanced disease.

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Background: With the emergence of therapies for mantle cell lymphoma (MCL), understanding the treatment patterns and burden of illness among older patients with MCL in Canada is essential to inform decision making.

Methods: A retrospective study using administrative data matched individuals aged ≥65 who were newly diagnosed with MCL between 1 January 2013 and 31 December 2016 with general population controls. Cases were followed for up to 3 years in order to assess healthcare resource utilization (HCRU), healthcare costs, time to next treatment or death (TTNTD), and overall survival (OS); all were stratified according to first-line treatment.

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Background: The Follicular lymphoma international prognostic index (FLIPI) risk score and POD24 have previously been shown to have prognostic value in follicular lymphoma (FL), but the extent to which they can inform prognosis at the time of subsequent relapse is uncertain.

Patients And Methods: We conducted a longitudinal cohort study of individuals diagnosed with FL between 2004 and 2010 in Alberta, Canada who received front-line therapy and subsequently relapsed. FLIPI covariates were measured prior to the initiation of front-line therapy.

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Background: Many patients with advanced follicular lymphoma (FL) and marginal zone lymphoma (MZL) relapse after first-line chemotherapy.

Objective: To examine healthcare resource utilization (HCRU) and cost, treatment patterns, progression, and survival of patients with FL and MZL who relapse after first-line treatment, in Ontario, Canada.

Methods: A retrospective, administrative data study identified patients with relapsed FL and MZL (1 January 2005-31 December 2018).

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This study assessed the total costs of testing, including the estimated costs of delaying care, associated with next-generation sequencing (NGS) versus single-gene testing strategies among patients with newly diagnosed metastatic non-small cell lung cancer (mNSCLC) from a Canadian public payer perspective. A decision tree model considered testing for genomic alterations using tissue biopsy NGS or single-gene strategies following Canadian guideline recommendations. Inputs included prevalence of mNSCLC, the proportion that tested positive for each genomic alteration, rebiopsy rates, time to test results, testing/medical costs, and costs of delaying care based on literature, public data, and expert opinion.

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Article Synopsis
  • Real-world data on positive non-small cell lung cancer (NSCLC) patients in Canada is scarce, prompting a study using Alberta's administrative databases to assess mutation prevalence and treatment outcomes.
  • From 2013 to 2019, out of 2,974 tested patients, 451 (15.2%) were positive for NSCLC mutations, with Exon 19 mutations being the most common at 49%, followed by L858R at 35.3%, and Exon20ins at 4%.
  • Patients with Exon20ins mutations had significantly poorer overall survival outcomes (10.5 months) compared to those with Exon 19 (20.6 months) and L858R mutations (19.1
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Objectives: The aim of this study was to use Microsoft Excel spreadsheet software to fit parametric survival distributions. We also explain the differences between individual patient data (IPD) and survival data reconstructed in Excel and SAS.

Methods: Three sets of patient data on overall survival were compared using different methods: 'original' IPD, 'reconstructed SAS', and 'reconstructed Excel'.

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Background: Long-term effectiveness is an important factor when considering treatment decisions.

Objective: To determine the long-term retention patterns of Canadian inflammatory bowel disease (IBD) and rheumatologic disease (RD) patients, including rheumatoid arthritis, psoriatic arthritis, and ankylosing spondylitis, treated with innovator infliximab (IFX) and to assess the impact of year-over-year cumulative IFX exposure on retention in both patient populations.

Patients And Methods: This analysis used a Canadian longitudinal prescription claims database to measure retention on IFX over a period of 5 years.

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Objective: Poor adherence to therapy increases the patient and societal burden and complexity of chronic diseases such as rheumatoid arthritis (RA). In the past 15 years, biologic disease-modifying anti-rheumatic drugs (DMARDs) have revolutionized the treatment of RA. However, little data are available on the impact of adherence to biologics on health care resources.

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Background And Aims: Adaptive trial designs present a methodological challenge when performing network meta-analysis (NMA), as data from such adaptive trial designs differ from conventional parallel design randomized controlled trials (RCTs). We aim to illustrate the importance of considering study design when conducting an NMA.

Methods: Three NMAs comparing anti-tumor necrosis factor drugs for ulcerative colitis were compared and the analyses replicated using Bayesian NMA.

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Background: The ischemic Stroke risk score is a validated prognostic score which can be used by clinicians to estimate patient outcomes after the occurrence of an acute ischemic stroke.

Aim: In this study, we examined the association between the ischemic Stroke risk score and patients' 30-day, one-year, and two-year healthcare costs from the perspective of a third party healthcare payer.

Methods: Patients who had an acute ischemic stroke were identified from the Registry of Canadian Stroke Network.

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