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Henderson Berg MH, Davison K, Popradi G. Real-world effectiveness of brentuximab vedotin in the treatment of CD30-positive cutaneous T-cell lymphoma: a single-centre retrospective review. Br J Dermatol 2021; 186:379-381. [PMID: 34608632 DOI: 10.1111/bjd.20786] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 10/01/2021] [Accepted: 10/03/2021] [Indexed: 11/28/2022]
Affiliation(s)
| | - K Davison
- Division of Hematology, McGill University, Montreal, QC, Canada
| | - G Popradi
- Division of Hematology, McGill University, Montreal, QC, Canada
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2
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Roy SF, Ghazawi FM, Le M, Lagacé F, Roy CF, Rahme E, Savin E, Zubarev A, Sasseville D, Popradi G, Litvinov IV. Epidemiology of adult and pediatric Burkitt lymphoma in Canada: sequelae of the HIV epidemic. ACTA ACUST UNITED AC 2020; 27:83-89. [PMID: 32489250 DOI: 10.3747/co.27.5775] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Background Although the pathogenesis and epidemiology of endemic Burkitt lymphoma (bl) have been extensively studied, the epidemiologic landscape of sporadic and immunodeficiency-associated bl in North America remains poorly understood. Methods We used 3 distinct population-based cancer registries to retrospectively study bl incidence and mortality in Canada. Data for patient sex; age at the time of diagnosis; and reporting province, city, and forward sortation area (fsa, the first three characters of a postal code) were analyzed. Results During 1992-2010, 1420 patients with bl in Canada were identified (incidence rate: 2.40 cases per million patient-years), of which 71.1% were male patients. Mean age at diagnosis was 55.5 ± 20.8 years. A bimodal incidence by age distribution was seen in both sexes, with pediatric- and adult-onset peaks. An analysis based on fsas identified select communities with statistically higher rates of adult bl. Several of those fsas were located within the 3 major metropolitan areas (Montreal, Vancouver, Toronto) and within self-identified lgbtq communities. The fsas with a higher socioeconomic status score were associated with lower rates of bl. Conclusions Current results highlight the geographic and historic pattern of bl in Canada. The human immunodeficiency virus remains an important risk factor for adult bl.
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Affiliation(s)
- S F Roy
- Division of Pathology, University of Montreal, Montreal, QC
| | - F M Ghazawi
- Division of Dermatology, University of Ottawa, Ottawa, ON
| | - M Le
- Division of Dermatology, McGill University, Montreal, QC
| | - F Lagacé
- Division of Dermatology, McGill University, Montreal, QC.,Faculty of Medicine, McGill University, Montreal, QC
| | - C F Roy
- Faculty of Medicine, McGill University, Montreal, QC
| | - E Rahme
- Division of Clinical Epidemiology, McGill University, Montreal, QC
| | - E Savin
- Division of Dermatology, McGill University, Montreal, QC
| | - A Zubarev
- Division of Dermatology, McGill University, Montreal, QC
| | - D Sasseville
- Division of Dermatology, McGill University, Montreal, QC
| | - G Popradi
- Division of Hematology, McGill University, Montreal, QC
| | - I V Litvinov
- Division of Dermatology, McGill University, Montreal, QC
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3
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Le M, Ghazawi FM, Alakel A, Netchiporouk E, Rahme E, Zubarev A, Powell M, Moreau L, Roshdy O, Glassman SJ, Sasseville D, Popradi G, Litvinov IV. Incidence and mortality trends and geographic patterns of follicular lymphoma in Canada. ACTA ACUST UNITED AC 2019; 26:e473-e481. [PMID: 31548815 DOI: 10.3747/co.26.4625] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Background Follicular lymphoma (fl) is the most common indolent lymphoma and the 2nd most common non-Hodgkin lymphoma, accounting for 10%-20% of all lymphomas in the Western world. Epidemiologic and geographic trends of fl in Canada have not been investigated. Our study's objective was to analyze incidence and mortality rates and the geographic distribution of fl patients in Canada for 1992-2010. Methods Demographic and geographic patient data for fl cases were obtained using the Canadian Cancer Registry, the Registre québécois du cancer, and the Canadian Vital Statistics database. Incidence and mortality rates and 95% confidence intervals were calculated per year and per geographic area. Rates were plotted using linear regression models to assess trends over time. Overall data were mapped using Microsoft Excel mapping software (Redmond, WA, U.S.A.) to identify case clusters across Canada. Results Approximately 22,625 patients were diagnosed with fl during 1992-2010. The age-standardized incidence rate of this malignancy in Canada was 38.3 cases per million individuals per year. Geographic analysis demonstrated that a number of Maritime provinces and Manitoba had the highest incidence rates, and that the provinces of Nova Scotia and Quebec had the highest mortality rates in the nation. Regional data demonstrated clustering of fl within cities or regions with high herbicide use, primary mining, and a strong manufacturing presence. Conclusions Our study provides a comprehensive overview of the fl burden and its geographic distribution in Canada. Regional clustering of this disease in concentrated industrial zones strongly suggests that multiple environmental factors might play a crucial role in the development of this lymphoma.
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Affiliation(s)
- M Le
- Division of Dermatology, McGill University, Montreal, QC
| | - F M Ghazawi
- Division of Dermatology, University of Ottawa, Ottawa, ON
| | - A Alakel
- The Ottawa Hospital Research Institute, Ottawa, ON
| | - E Netchiporouk
- Division of Dermatology, McGill University, Montreal, QC
| | - E Rahme
- Division of Clinical Epidemiology, McGill University, Montreal, QC
| | - A Zubarev
- Division of Dermatology, McGill University, Montreal, QC
| | - M Powell
- Division of Dermatology, McGill University, Montreal, QC
| | - L Moreau
- Division of Dermatology, McGill University, Montreal, QC
| | - O Roshdy
- Division of Dermatology, McGill University, Montreal, QC
| | - S J Glassman
- Division of Dermatology, University of Ottawa, Ottawa, ON
| | - D Sasseville
- Division of Dermatology, McGill University, Montreal, QC
| | - G Popradi
- Division of Hematology, McGill University, Montreal, QC
| | - I V Litvinov
- Division of Dermatology, McGill University, Montreal, QC.,Division of Dermatology, University of Ottawa, Ottawa, ON
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Abstract
Hematopoietic stem-cell transplantation (hsct) is a medical procedure that consists of infusing stem cells after a short course of chemotherapy or radiotherapy, or both. It can be used in the treatment of various cancers, as well as some benign conditions. In the present review, we discuss the various types of hsct and their main indications. The principles of the transplant procedure itself and the basics of recipient selection are reviewed. Special attention is given to both the immediate and the long-term complications of hsct and their management strategies. Hematopoietic stem-cell transplantation is a potentially life-saving procedure and often the only curative option for a variety of diseases; however, it is not without significant toxicities.
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Affiliation(s)
- A Bazinet
- Division of Hematology, McGill University Health Centre, Montreal, QC
| | - G Popradi
- Division of Hematology, McGill University Health Centre, Montreal, QC
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5
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Amar L, Le M, Ghazawi FM, Rahme E, Segal A, Netchiporouk E, Popradi G, Moreau L, Roshdy O, Sasseville D, Litvinov IV. Prevalence of human T cell lymphotropic virus 1 infection in Canada. ACTA ACUST UNITED AC 2019; 26:e3-e5. [PMID: 30853802 DOI: 10.3747/co.26.4593] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Human T cell lymphotropic virus 1 (htlv-1) is a bloodborne retrovirus that infects at least 5–20 million people around the world [...]
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Affiliation(s)
- L Amar
- Division of Dermatology, McGill University, Montreal, QC
| | - M Le
- Division of Dermatology, McGill University, Montreal, QC
| | - F M Ghazawi
- Division of Dermatology, University of Ottawa, Ottawa, ON
| | - E Rahme
- Division of Dermatology, McGill University, Montreal, QC
| | - A Segal
- Division of Dermatology, McGill University, Montreal, QC
| | - E Netchiporouk
- Division of Dermatology, McGill University, Montreal, QC
| | - G Popradi
- Division of Dermatology, McGill University, Montreal, QC
| | - L Moreau
- Division of Dermatology, McGill University, Montreal, QC
| | - O Roshdy
- Division of Dermatology, McGill University, Montreal, QC
| | - D Sasseville
- Division of Dermatology, McGill University, Montreal, QC
| | - I V Litvinov
- Division of Dermatology, McGill University, Montreal, QC
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6
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D'Souza Y, Ferradji A, Saw C, Oualkacha K, Richard L, Popradi G, Sapir-Pichhadze R. Inaccuracies in epitope repertoire estimations when using Multi-Locus Allele-Level hla genotype imputation tools. HLA 2018; 92:33-39. [PMID: 29888504 DOI: 10.1111/tan.13307] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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: 02/24/2018] [Revised: 06/04/2018] [Accepted: 06/07/2018] [Indexed: 02/28/2024]
Abstract
BACKGROUND Limited availability of allele-level HLA genotypes prompts their imputation from allele-group genotypes to estimate epitope mismatches. We evaluated the accuracy of epitope load and repertoire assignment when imputing allele-level HLA genotypes. METHODS Analyses were conducted on 175 hematopoietic stem cell (HSC) donors from the Héma-Québec registry (HQR) and 57 HSC donor-recipient pairs from McGill University Health Centre (MUHC), Québec, Canada, genotyped for HLA-A, -B, -C, -DRB1 and -DQB1. Multi-locus allele-level imputation was performed using HaploStats. Disagreement in B- and T-cell epitope assignment and epitope mismatches were ascertained for imputed vs. measured allele-level HLA genotypes in HSC donors and donor-recipient pairs, respectively. RESULTS Imputation resulted in no differences in overall eplet mismatches and PIRCHE-II for HLA-A, -B, and -C in 83.4% and 93.7% of HQR donors and 87.7% and 87.7% of MUHC donors, respectively. HLA-DRB1- and -DQB1-derived eplet mismatches and PIRCHE-II were correctly assigned in 72.0% and 85.1% of HQR donors and 70.2% and 71.9% of MUHC donors, respectively. No discrepancies in eplet load or PIRCHE-II were observed in 96.5% and 86.0% of HSC donor-recipient pairs and in 70.2% and 70.1% of pairs for HLA-A, -B and -C and -DRB1 and -DQB1, respectively. Kappa statistics of 0.9708 and 0.9725, 0.8724 and 0.8177, 0.9827 and 0.9022, 0.5644 and 0.4939, 0.5085 and 0.6361 were demonstrated when assessing agreement between eplet mismatches and PIRCHE-II of imputed vs. measured HLA-A, -B, -C, -DRB1 and -DQB1 types, respectively. CONCLUSIONS To avoid inaccuracies in epitope compatibility estimation, mainly for class II HLA, multi-locus allele-level genotype measurement is recommended. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Y D'Souza
- Research Institute, McGill University Health Centre, Montréal, Québec, Canada
| | - A Ferradji
- Research Institute, McGill University Health Centre, Montréal, Québec, Canada
| | - C Saw
- Histocompatibility Laboratory, Division of Hematology, Department of Medicine, McGill University, Montréal, Québec, Canada
| | - K Oualkacha
- Department of Mathematics, Université du Québec À Montréal, Montréal, Québec, Canada
| | - L Richard
- Héma-Québec, Saint-Laurent, Québec, Canada
| | - G Popradi
- Research Institute, McGill University Health Centre, Montréal, Québec, Canada
- Division of Hematology, Department of Medicine, McGill University, Montréal, Québec, Canada
| | - R Sapir-Pichhadze
- Research Institute, McGill University Health Centre, Montréal, Québec, Canada
- Division of Nephrology, Department of Medicine, McGill University, Montréal, Québec, Canada
- Centre for Outcomes Research and Evaluation (CORE), McGill University Health Centre, Montréal, Québec, Canada
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montréal, Québec, Canada
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Abu-Sanad A, Warsi A, Michel RP, Nahal A, Popradi G, Storring JM, Liberman AS, Alcindor T. Long-term remission after autologous stem-cell transplantation for relapsed histiocytic sarcoma. ACTA ACUST UNITED AC 2012; 19:e289-91. [PMID: 22876158 DOI: 10.3747/co.19.964] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Histiocytic sarcoma is diagnosed according to established criteria. However, treatment is controversial: although lymphoma chemotherapy regimens are often used, their impact on the natural history of the disease is unclear. Here, we report a disease-free survival of 2 years after autologous stem-cell transplantation in a patient with relapsed histiocytic sarcoma.
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Affiliation(s)
- A Abu-Sanad
- Division of Medical Oncology, McGill University Health Centre, Montreal, QC
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