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Moulson R, Law J, Sacher A, Liu G, Shepherd FA, Bradbury P, Eng L, Iczkovitz S, Abbie E, Elia-Pacitti J, Ewara EM, Mokriak V, Weiss J, Pettengell C, Leighl NB. Real-World Outcomes of Patients with Advanced Epidermal Growth Factor Receptor-Mutated Non-Small Cell Lung Cancer in Canada Using Data Extracted by Large Language Model-Based Artificial Intelligence. Curr Oncol 2024; 31:1947-1960. [PMID: 38668049 PMCID: PMC11049467 DOI: 10.3390/curroncol31040146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 02/09/2024] [Accepted: 03/25/2024] [Indexed: 04/28/2024] Open
Abstract
Real-world evidence for patients with advanced EGFR-mutated non-small cell lung cancer (NSCLC) in Canada is limited. This study's objective was to use previously validated DARWENTM artificial intelligence (AI) to extract data from electronic heath records of patients with non-squamous NSCLC at University Health Network (UHN) to describe EGFR mutation prevalence, treatment patterns, and outcomes. Of 2154 patients with NSCLC, 613 had advanced disease. Of these, 136 (22%) had common sensitizing EGFR mutations (cEGFRm; ex19del, L858R), 8 (1%) had exon 20 insertions (ex20ins), and 338 (55%) had EGFR wild type. One-year overall survival (OS) (95% CI) for patients with cEGFRm, ex20ins, and EGFR wild type tumours was 88% (83, 94), 100% (100, 100), and 59% (53, 65), respectively. In total, 38% patients with ex20ins received experimental ex20ins targeting treatment as their first-line therapy. A total of 57 patients (36%) with cEGFRm received osimertinib as their first-line treatment, and 61 (39%) received it as their second-line treatment. One-year OS (95% CI) following the discontinuation of osimertinib was 35% (17, 75) post-first-line and 20% (9, 44) post-second-line. In this real-world AI-generated dataset, survival post-osimertinib was poor in patients with cEGFR mutations. Patients with ex20ins in this cohort had improved outcomes, possibly due to ex20ins targeting treatment, highlighting the need for more effective treatments for patients with advanced EGFRm NSCLC.
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Affiliation(s)
- Ruth Moulson
- Pentavere, 460 College Street, Toronto, ON M6G 1A1, Canada; (R.M.)
| | - Jennifer Law
- Department of Medical Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2C1, Canada
| | - Adrian Sacher
- Department of Medical Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2C1, Canada
| | - Geoffrey Liu
- Department of Medical Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2C1, Canada
| | - Frances A. Shepherd
- Department of Medical Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2C1, Canada
| | - Penelope Bradbury
- Department of Medical Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2C1, Canada
| | - Lawson Eng
- Department of Medical Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2C1, Canada
| | | | | | | | | | | | - Jessica Weiss
- Pentavere, 460 College Street, Toronto, ON M6G 1A1, Canada; (R.M.)
| | | | - Natasha B. Leighl
- Department of Medical Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2C1, Canada
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Boyne DJ, Chua N, Owen C, Joe-Uzuegbu O, Shakir H, Gogna P, Jarada TN, Brenner DR, Elia-Pacitti J, Ewara EM, Cheung WY. External Validation of the FLIPI Risk Score Measured at Diagnosis and POD24 Among Individuals With Follicular Lymphoma at the Time of Subsequent Relapse. Clin Lymphoma Myeloma Leuk 2023; 23:e277-e285. [PMID: 37331847 DOI: 10.1016/j.clml.2023.05.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/21/2023] [Accepted: 05/25/2023] [Indexed: 06/20/2023]
Abstract
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. Median overall survival (OS), progression-free survival (PFS2), and time to next treatment (TTNT2) were estimated from the time of relapse. RESULTS A total of 216 individuals were included. The FLIPI risk score was highly prognostic at the time of relapse for OS (c-statistic = 0.70; HR[High vs. Low] = 7.38; 95% CI: 3.05-17.88), PFS2 (c-statistic = 0.68; HR[High vs. Low] = 5.84; 95% CI: 2.93-11.62) and TTNT2 (c-statistic = 0.68; HR[High vs. Low] = 5.72; 95% CI: 2.87-11.41). POD24 was not prognostic at the time of relapse for either OS, PFS2, or TTNT2 (c-statistic = 0.55). CONCLUSION The FLIPI score measured at diagnosis may help with the risk stratification of individuals with relapsed FL.
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Affiliation(s)
- Devon J Boyne
- Oncology Outcomes Research Initiative, University of Calgary, Calgary, AB, Canada; Department of Oncology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
| | - Neil Chua
- Department of Medical Oncology and Hematology, Cross Cancer Institute, Edmonton, AB, Canada
| | - Carolyn Owen
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Ofodile Joe-Uzuegbu
- Oncology Outcomes Research Initiative, University of Calgary, Calgary, AB, Canada; Department of Oncology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Huma Shakir
- Oncology Outcomes Research Initiative, University of Calgary, Calgary, AB, Canada; Department of Oncology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Priyanka Gogna
- Oncology Outcomes Research Initiative, University of Calgary, Calgary, AB, Canada; Department of Oncology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Tamer N Jarada
- Oncology Outcomes Research Initiative, University of Calgary, Calgary, AB, Canada; Department of Oncology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Darren R Brenner
- Oncology Outcomes Research Initiative, University of Calgary, Calgary, AB, Canada; Department of Oncology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Community Health Science, University of Calgary, Calgary, AB, Canada
| | | | | | - Winson Y Cheung
- Oncology Outcomes Research Initiative, University of Calgary, Calgary, AB, Canada; Department of Oncology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
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Anglin P, Elia-Pacitti J, Eberg M, Muratov S, Kukaswadia A, Sharma A, Ewara EM. Estimating the Associated Burden of Illness and Healthcare Utilization of Newly Diagnosed Patients Aged ≥65 with Mantle Cell Lymphoma (MCL) in Ontario, Canada. Curr Oncol 2023; 30:5529-5545. [PMID: 37366901 DOI: 10.3390/curroncol30060418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 06/01/2023] [Accepted: 06/02/2023] [Indexed: 06/28/2023] Open
Abstract
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. RESULTS This study matched 159 MCL patients to 636 controls. Direct healthcare costs were highest among MCL patients in the first year following diagnosis (Y1: CAD 77,555 ± 40,789), decreased subsequently (Y2: CAD 40,093 ± 28,720; Y3: CAD 36,059 ± 36,303), and were consistently higher than the costs for controls. The 3-year OS after MCL diagnosis was 68.6%, with patients receiving bendamustine + rituximab (BR) experiencing a significantly higher OS compared to patients treated with other regimens (72.4% vs. 55.6%, p = 0.041). Approximately 40.9% of MCL patients initiated a second-line therapy or died within 3 years. CONCLUSION Newly diagnosed MCL presents a substantial burden to the healthcare system, with almost half of all patients progressing to a second-line therapy or death within 3 years.
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Affiliation(s)
- Peter Anglin
- Stronach Regional Cancer Centre, Southlake Regional Health Centre, Newmarket, ON L3Y 2P9, Canada
- Bayshore HealthCare, 2101 Hadwen Rd., Mississauga, ON L5K 2L3, Canada
| | - Julia Elia-Pacitti
- Janssen Canada Inc., 19 Green Belt Drive, North York, ON M3C 1L9, Canada
| | - Maria Eberg
- Real World Solutions, IQVIA, 16720 Rte Transcanadienne, Kirkland, QC H9H 5M3, Canada
| | - Sergey Muratov
- Real World Solutions, IQVIA, 402-1875 Buckhorn Gate, Mississauga, ON L4W 5N9, Canada
| | - Atif Kukaswadia
- Real World Solutions, IQVIA, 402-1875 Buckhorn Gate, Mississauga, ON L4W 5N9, Canada
| | - Arushi Sharma
- Real World Solutions, IQVIA, 301-300 March Rd., Kanata, ON K2K 2E2, Canada
| | - Emmanuel M Ewara
- Janssen Canada Inc., 19 Green Belt Drive, North York, ON M3C 1L9, Canada
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Kuruvilla J, Ewara EM, Elia-Pacitti J, Ng R, Eberg M, Kukaswadia A, Sharma A. Estimating the Burden of Illness of Relapsed Follicular Lymphoma and Marginal Zone Lymphoma in Ontario, Canada. Curr Oncol 2023; 30:4663-4676. [PMID: 37232810 DOI: 10.3390/curroncol30050352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/21/2023] [Accepted: 04/24/2023] [Indexed: 05/27/2023] Open
Abstract
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). Patients were followed for up to three years post relapse to assess HCRU, healthcare costs, time to next treatment (TTNT), and overall survival (OS), stratified by first- and second-line treatment. RESULTS The study identified 285 FL and 68 MZL cases who relapsed after first-line treatment. Average duration of first-line treatment was 12.4 and 13.4 months for FL and MZL patients, respectively. Drug (35.9%) and cancer clinic costs (28.1%) were major contributors to higher costs in year 1. Three-year OS was 83.9% after FL and 74.2% after MZL relapse. No statistically significant differences were observed in TTNT and OS between patients with FL who received R-CHOP/R-CVP/BR in the first line only versus both the first- and second- line. A total of 31% of FL and 34% of MZL patients progressed to third-line treatment within three years of initial relapse. CONCLUSION Relapsing and remitting nature of FL and MZL in a subset of patients results in substantial burden to patients and the healthcare system.
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Affiliation(s)
- John Kuruvilla
- Department of Medical Oncology and Hematology, Princess Margaret Cancer Centre, 610 University Avenue, Toronto, ON M5G 2C1, Canada
- Department of Medicine, University of Toronto, Toronto, ON M5S 3H7, Canada
| | - Emmanuel M Ewara
- Market Access, Janssen Canada Inc., 19 Green Belt Drive, North York, ON M3C 1L9, Canada
| | - Julia Elia-Pacitti
- Medical Affairs, Janssen Canada Inc., 19 Green Belt Drive, North York, ON M3C 1L9, Canada
| | - Ryan Ng
- Real World Solutions, IQVIA, 16720 Rte Transcanadienne, Kirkland, QC H9H 5M3, Canada
| | - Maria Eberg
- Real World Solutions, IQVIA, 16720 Rte Transcanadienne, Kirkland, QC H9H 5M3, Canada
| | - Atif Kukaswadia
- Real World Solutions, IQVIA, 300-6700 Century Avenue, Mississauga, ON L5N 6A4, Canada
| | - Arushi Sharma
- Real World Solutions, IQVIA, 535 Legget Drive, Tower C, 7th Floor, Ottawa, ON K2K 3B8, Canada
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Sheffield BS, Eaton K, Emond B, Lafeuille MH, Hilts A, Lefebvre P, Morrison L, Stevens AL, Ewara EM, Cheema P. Cost Savings of Expedited Care with Upfront Next-Generation Sequencing Testing versus Single-Gene Testing among Patients with Metastatic Non-Small Cell Lung Cancer Based on Current Canadian Practices. Curr Oncol 2023; 30:2348-2365. [PMID: 36826141 PMCID: PMC9955559 DOI: 10.3390/curroncol30020180] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 02/08/2023] [Accepted: 02/10/2023] [Indexed: 02/18/2023] Open
Abstract
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. Among 1,000,000 hypothetical publicly insured adult Canadians (382 with mNSCLC), the proportion of patients that tested positive for a genomic alteration with an approved targeted therapy was 38.0% for NGS and 26.1% for single-gene strategies. The estimated mean time to appropriate targeted therapy initiation was 5.1 weeks for NGS and 9.2 weeks for single-gene strategies. Based on literature, each week of delayed care cost CAD 406, translating to total mean per-patient costs of CAD 3480 for NGS and CAD 5632 for single-gene strategies. NGS testing with mNSCLC in current Canadian practice resulted in more patients with an identified mutation, shorter time to appropriate targeted therapy initiation, and lower total testing costs compared to single-gene strategies.
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Affiliation(s)
| | | | - Bruno Emond
- Analysis Group, Inc., Montréal, QC H3B 0G7, Canada
| | | | | | | | - Laura Morrison
- Analysis Group, Inc., Montréal, QC H3B 0G7, Canada
- Correspondence: ; Tel.: +514-871-3303
| | | | | | - Parneet Cheema
- William Osler Health System, Brampton, ON L6R 3J7, Canada
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O’Sullivan DE, Jarada TN, Yusuf A, Hu L(XY, Gogna P, Brenner DR, Abbie E, Rose JB, Eaton K, Elia-Pacitti J, Ewara EM, Pabani A, Cheung WY, Boyne DJ. Prevalence, Treatment Patterns, and Outcomes of Individuals with EGFR Positive Metastatic Non-Small Cell Lung Cancer in a Canadian Real-World Setting: A Comparison of Exon 19 Deletion, L858R, and Exon 20 Insertion EGFR Mutation Carriers. Curr Oncol 2022; 29:7198-7208. [PMID: 36290844 PMCID: PMC9600059 DOI: 10.3390/curroncol29100567] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/19/2022] [Accepted: 09/23/2022] [Indexed: 11/17/2022] Open
Abstract
Real-world evidence surrounding EGFR positive NSCLC patients in Canada is limited. Administrative databases in Alberta, Canada were used to evaluate EGFR testing and mutation prevalence in de novo metastatic NSCLC, as well as the characteristics, treatment patterns, and outcomes of individuals with Exon 19, L858R and Exon20ins mutations. Between 2013-2019, 2974 individuals underwent EGFR testing, of which 451 (15.2%) were EGFR positive. Among EGFR positive individuals, 221 (49.0%) had an Exon 19 mutation, 159 (35.3%) had an L858R mutation, and 18 (4%) had an Exon20ins mutation. The proportion of individuals who initiated 1L systemic therapy was 89.1% for Exon19, 85.5% for L858R, and 72.2% for Exon20ins carriers. The primary front-line systemic therapy was gefitinib or afatinib monotherapy for individuals with Exon 19 (93.4%) and L858R (94.1%) mutations versus platinum combination therapy for individuals with Exon20ins mutations (61.5%). The Exon20ins cohort had worse median overall survival from initiation of 1L systemic therapy (10.5 months [95% CI: 8.0-not estimable]) than the Exon19 (20.6 months [95% CI: 18.4-24.9]), and L858R cohorts (19.1 months [95% CI: 14.5-23.1]). These findings highlight that Exon20ins mutations represent a rare subset of NSCLC in which treatment options are limited and survival outcomes are worse relative to individuals with more common types of EGFR mutations.
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Affiliation(s)
- Dylan E. O’Sullivan
- Department of Oncology, University of Calgary, Calgary, AB T2N 4N2, Canada
- Oncology Outcomes Initiative, University of Calgary, Calgary, AB T2N 4N2, Canada
| | - Tamer N. Jarada
- Department of Oncology, University of Calgary, Calgary, AB T2N 4N2, Canada
- Oncology Outcomes Initiative, University of Calgary, Calgary, AB T2N 4N2, Canada
| | - Amman Yusuf
- Department of Oncology, University of Calgary, Calgary, AB T2N 4N2, Canada
- Oncology Outcomes Initiative, University of Calgary, Calgary, AB T2N 4N2, Canada
| | - Leo (Xun Yang) Hu
- Oncology Outcomes Initiative, University of Calgary, Calgary, AB T2N 4N2, Canada
| | - Priyanka Gogna
- Oncology Outcomes Initiative, University of Calgary, Calgary, AB T2N 4N2, Canada
- Public Health Sciences, Queen’s University, Kingston, Toronto, ON K7L 3N6, Canada
| | - Darren R. Brenner
- Department of Oncology, University of Calgary, Calgary, AB T2N 4N2, Canada
- Oncology Outcomes Initiative, University of Calgary, Calgary, AB T2N 4N2, Canada
| | | | | | | | | | | | - Aliyah Pabani
- Department of Oncology, University of Calgary, Calgary, AB T2N 4N2, Canada
| | - Winson Y. Cheung
- Department of Oncology, University of Calgary, Calgary, AB T2N 4N2, Canada
- Oncology Outcomes Initiative, University of Calgary, Calgary, AB T2N 4N2, Canada
| | - Devon J. Boyne
- Department of Oncology, University of Calgary, Calgary, AB T2N 4N2, Canada
- Oncology Outcomes Initiative, University of Calgary, Calgary, AB T2N 4N2, Canada
- Correspondence:
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Djalalov S, Beca J, Ewara EM, Hoch JS. A Comparison of Different Analysis Methods for Reconstructed Survival Data to Inform Cost‑Effectiveness Analysis. Pharmacoeconomics 2019; 37:1525-1536. [PMID: 31571137 DOI: 10.1007/s40273-019-00830-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
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'. The best-fit distribution was selected using visual observation, supported by linear plots of predicted probabilities, goodness-of-fit coefficients, and the sum of squared error of prediction. Outcomes included the incremental cost-effectiveness ratio (ICER), incremental net benefit (INB), incremental cost, and life-years gained over short-term and lifetime horizons. These were compared for different data sets. RESULTS In this example, log-normal, log-logistic, and Weibull distributions showed best-fit with the visual tests and goodness-of-fit statistics. Weibull and exponential distributions showed significant differences compared with IPD data. Data on short-term (5 years) time horizons produced by different data re-creation methods showed closeness with data reconstructed from SAS. The ICER and INB results were dependent on the time horizon and selected parametric distribution from the model. CONCLUSIONS Different approaches used in fitting parametric survival distributions yielded predicted probabilities that substantially differed from those using original IPD. Our study highlights the importance of following guidelines for economic evaluations with a systematic approach to parametric survival analysis techniques in order to select best fitting parametric survival distributions.
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Affiliation(s)
- Sandjar Djalalov
- Westminster International University in Tashkent, 12 Istiqbol St., 100047, Tashkent, Uzbekistan.
- Tashkent Pharmaceutical Institute, 45 Aybek Street, 100015, Tashkent, Uzbekistan.
- Toronto Health Economics and Technology Assessment (THETA) Collaborative Toronto General Hospital, Eaton Building, 10th Floor, Room 248, 200 Elizabeth Street, Toronto, ON, M5G 2C4, Canada.
| | | | | | - Jeffrey S Hoch
- Division of Health Policy and Management, Department of Public Health Sciences, University of California Davis, Davis, CA, USA
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Baer PA, Aumais G, Ewara EM, Khraishi M, Marrache AM, Panaccione R, Wade JP, Marshall JK. Patterns and predictors of long-term retention of inflammatory bowel or rheumatoid disease patients on innovator infliximab: an analysis of a Canadian prescriptions claims database. Patient Prefer Adherence 2018; 12:1805-1814. [PMID: 30271124 PMCID: PMC6154729 DOI: 10.2147/ppa.s171363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
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. Twelve-month unadjusted odds ratios of retention by time on IFX were calculated for the overall cohort, and within-group comparisons evaluated differences according to age, sex, region, insurance coverage, use of concomitant immunosuppressant therapy, indication (RD cohort only), and previous biologic experience. Between-group analyses compared unadjusted 5-year retention among the same variables. Variables that were independently associated with longer retention on IFX were identified using multivariable regression. RESULTS Seven thousand eight hundred and six IBD patients and 2,935 RD patients on stable treatment with IFX were included in the analysis. Sixty-nine percent of IBD patients and 66% of RD patients were retained on IFX after 1 year and 33% and 29%, respectively, were retained after 5 years. Moreover, the probability of being retained on IFX significantly increased with cumulative time on IFX. Independent predictors of 5-year retention included sex, region, and type of insurance coverage among IBD patients and region, type of insurance, prior biologic therapy, and specific indication among RD patients. Patients with IBD were 17% more likely to be retained on IFX over 5 years compared to patients with RD. CONCLUSION Real-world Canadian IBD and RD patients on IFX have good overall long-term treatment retention. Previous duration of IFX treatment predicts better future retention, and this knowledge could help inform treatment decisions when patients have been stable on IFX treatment for varying periods of time.
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Affiliation(s)
| | - Guy Aumais
- Department of Medicine, Université de Montréal, Gastro-enterology Unit, Hôpital Maisonneuve-Rosemont, Montréal, QC
| | | | | | - A Marilise Marrache
- Faculty of Medicine, Division of Rheumatology, Memorial University of Newfoundland and Nexus Clinical Research, St John's, NL
| | - Remo Panaccione
- Inflammatory Bowel Disease Unit, Department of Medicine, University of Calgary, Calgary, AB
| | - John P Wade
- Department of Medicine, Division of Rheumatology, University of British Columbia, Vancouver, BC
| | - John K Marshall
- Department of Medicine, Division of Gastroenterology, McMaster University and Farncombe Family Digestive Health Research Institute, Hamilton, ON, Canada,
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Lathia U, Ewara EM, Nantel F. Impact of adherence to biological agents on health care resource utilization for patients over the age of 65 years with rheumatoid arthritis. Patient Prefer Adherence 2017; 11:1133-1142. [PMID: 28740368 PMCID: PMC5505619 DOI: 10.2147/ppa.s137206] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
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. The objective of the study was to determine the long-term health care resource utilization patterns of RA patients who were adherent to biologic DMARD therapy compared to RA patients who were non-adherent to biologic DMARD therapy in an Ontario population and to determine factors influencing adherence. METHODS Patients were identified from the Ontario RA Database that contains all RA patients in Ontario, Canada, identified since 1991. The study population included RA patients, aged 65+ years, with a prescription for a biologic DMARD between 2003 and 2013. Exclusion criteria included diagnosis of inflammatory bowel disease, psoriatic arthritis or psoriasis in the 5 years prior to the index date and discontinuation of biologic DMARD, defined as no subsequent prescription during the 12 months after the index date. Adherence was defined as a medication possession ratio of ≥0.8 measured as the proportion of days for which a patient had biologic treatment(s) over a defined follow-up period. Adherent patients were matched to non-adherent patients by propensity score matching. RESULTS A total of 4,666 RA patients were identified, of whom 2,749 were deemed adherent and 1,917 non-adherent. The age (standard deviation) was 69.9 (5.46) years and 75% were female. Relative rates for resource use (physician visits, emergency visits, hospitalization, home care and rehabilitation) for the matched cohort were significantly lower (P⩽0.0001) in adherent patients. Non-adherent patients' use of oral prednisone (67%) was significantly higher (P⩽0.001) than that of the adherent cohort (56%). CONCLUSION RA patients adherent to biologic therapy have lower health care resource use and lower steroid use compared to non-adherent patients.
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Affiliation(s)
| | | | - Francois Nantel
- Janssen Inc., Toronto, ON, Canada
- Correspondence: Francois Nantel, Janssen Inc., 19 Green Belt Drive, Toronto, ON M3C 1L9, Canada, Email
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Ewara EM, Isaranuwatchai W, Bravata DM, Williams LS, Fang J, Hoch JS, Saposnik G. The iScore predicts total healthcare costs early after hospitalization for an acute ischemic stroke. Int J Stroke 2015; 10:1179-86. [PMID: 26503089 DOI: 10.1111/ijs.12641] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 07/23/2015] [Indexed: 11/28/2022]
Abstract
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. The 30-day ischemic Stroke risk score prognostic score was determined for each patient. Direct healthcare costs at each time point were determined using administrative databases in the province of Ontario. Unadjusted mean and the impact of a 10-point increase ischemic Stroke risk score and a patient's risk of death or disability on total cost were determined. RESULTS There were 12,686 patients eligible for the study. Total unadjusted mean costs were greatest among patients at high risk. When adjusting for patient characteristics, a 10-point increase in the ischemic Stroke risk score was associated with 8%, 7%, and 4% increase in total costs at 30 days, one-year, and two-years. The same increase was found to impact patients at low, medium, and high risk differently. When adjusting for patient characteristics, patients in the high-risk group had the highest total costs at 30 days, while patients at medium risk had the highest costs at both one and two-years. CONCLUSIONS The ischemic Stroke risk score can be useful as a predictor of healthcare utilization and costs early after hospitalization for an acute ischemic stroke.
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Affiliation(s)
- Emmanuel M Ewara
- The Centre for Excellence in Economic Analysis Research, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON, Canada
| | - Wanrudee Isaranuwatchai
- The Centre for Excellence in Economic Analysis Research, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON, Canada.,Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada
| | - Dawn M Bravata
- VHA Health Services Research and Development (HSR&D), Stroke Quality Enhancement Research Initiative (QUERI), Washington, DC, USA.,VHA, HSR&D Center of Innovation on Health Information and Communication, Indianapolis, IN, USA.,Department of Internal Medicine, Indiana University School of Medicine, Indianapolis, IN, USA.,Department of Neurology, Indiana University School of Medicine, Indianapolis, IN, USA.,Regenstrief Institute, Indianapolis, IN, USA
| | - Linda S Williams
- VHA Health Services Research and Development (HSR&D), Stroke Quality Enhancement Research Initiative (QUERI), Washington, DC, USA.,VHA, HSR&D Center of Innovation on Health Information and Communication, Indianapolis, IN, USA.,Department of Neurology, Indiana University School of Medicine, Indianapolis, IN, USA.,Regenstrief Institute, Indianapolis, IN, USA
| | - Jiming Fang
- Institute of Clinical Evaluative Sciences, Toronto, ON, Canada
| | - Jeffrey S Hoch
- The Centre for Excellence in Economic Analysis Research, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON, Canada.,Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada.,Institute of Clinical Evaluative Sciences, Toronto, ON, Canada
| | - Gustavo Saposnik
- Department of Neurology, University of Toronto School of Medicine, Toronto, ON, Canada.,Division of Neurology, St. Michael's Hospital, Toronto, ON, Canada
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