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4 results on '"Francois Grand'Maison"'

1. Comparative effectiveness in multiple sclerosis: A methodological comparison

Author

Izanne Roos, Ibrahima Diouf, Sifat Sharmin, Dana Horakova, Eva Kubala Havrdova, Francesco Patti, Vahid Shaygannejad, Serkan Ozakbas, Guillermo Izquierdo, Sara Eichau, Marco Onofrj, Alessandra Lugaresi, Raed Alroughani, Alexandre Prat, Marc Girard, Pierre Duquette, Murat Terzi, Cavit Boz, Francois Grand’Maison, Patrizia Sola, Diana Ferraro, Pierre Grammond, Recai Turkoglu, Katherine Buzzard, Olga Skibina, Bassem Yamou, Ayse Altintas, Oliver Gerlach, Vincent van Pesch, Yolanda Blanco, Davide Maimone, Jeannette Lechner-Scott, Roberto Bergamaschi, Rana Karabudak, Chris McGuigan, Elisabetta Cartechini, Michael Barnett, Stella Hughes, Maria José Sa, Claudio Solaro, Cristina Ramo-Tello, Suzanne Hodgkinson, Daniele Spitaleri, Aysun Soysal, Thor Petersen, Franco Granella, Koen de Gans, Pamela McCombe, Radek Ampapa, Bart Van Wijmeersch, Anneke van der Walt, Helmut Butzkueven, Julie Prevost, Jose Luis Sanchez-Menoyo, Guy Laureys, Riadh Gouider, Tamara Castillo-Triviño, Orla Gray, Eduardo Aguera-Morales, Abdullah Al-Asmi, Cameron Shaw, Norma Deri, Talal Al-Harbi, Yara Fragoso, Tunde Csepany, Angel Perez Sempere, Irene Trevino-Frenk, Jan Schepel, Fraser Moore, Charles Malpas, Tomas Kalincik, and UCL - SSS/IONS/CEMO - Pôle Cellulaire et moléculaire

Subjects
Multiple Sclerosis, Fingolimod Hydrochloride, Natalizumab, Multiple Sclerosis, Relapsing-Remitting, Treatment Outcome, Neurology, Recurrence, Humans, Immunologic Factors, Neurology (clinical), causal inference, Propensity Score, Observational, Immunosuppressive Agents
Abstract

Background: In the absence of evidence from randomised controlled trials, observational data can be used to emulate clinical trials and guide clinical decisions. Observational studies are, however, susceptible to confounding and bias. Among the used techniques to reduce indication bias are propensity score matching and marginal structural models. Objective: To use the comparative effectiveness of fingolimod vs natalizumab to compare the results obtained with propensity score matching and marginal structural models. Methods: Patients with clinically isolated syndrome or relapsing remitting MS who were treated with either fingolimod or natalizumab were identified in the MSBase registry. Patients were propensity score matched, and inverse probability of treatment weighted at six monthly intervals, using the following variables: age, sex, disability, MS duration, MS course, prior relapses, and prior therapies. Studied outcomes were cumulative hazard of relapse, disability accumulation, and disability improvement. Results: 4608 patients (1659 natalizumab, 2949 fingolimod) fulfilled inclusion criteria, and were propensity score matched or repeatedly reweighed with marginal structural models. Natalizumab treatment was associated with a lower probability of relapse (PS matching: HR 0.67 [95% CI 0.62-0.80]; marginal structural model: 0.71 [0.62-0.80]), and higher probability of disability improvement (PS matching: 1.21 [1.02 -1.43]; marginal structural model 1.43 1.19 -1.72]). There was no evidence of a difference in the magnitude of effect between the two methods. Conclusions: The relative effectiveness of two therapies can be efficiently compared by either marginal structural models or propensity score matching when applied in clearly defined clinical contexts and in sufficiently powered cohorts.

Published
2023

2. Contribution of different relapse phenotypes to disability in multiple sclerosis

Author

Tamasine Stewart, Erik van Munster, Mark Slee, Patrizia Sola, Eva Havrdova, Dana Horakova, Orla Gray, Helmut Butzkueven, Cameron Shaw, Eugenio Pucci, Michael Barnett, Csilla Rozsa, Pamelo McCombe, Vincent Van Pesch, Maria Trojano, Franco Granella, Bhim Singhal, Fraser Moore, Javier Olascoaga, Neil Shuey, Pierre Duquette, Christina Ramo, Tomas Kalincik, Marc Girard, Freek Verheul, José Luis Sánchez Menoyo, Edgardo Cristiano, Pierre Grammond, Julie Prevost, Guillermo Izquierdo, Tim Spelman, Tatjana Petkovska-Boskova, Francois Grand'Maison, Celia Oreja-Guevara, Vahid Shaygannejad, Maria Laura Saladino, Suzanne Hodgkinson, Allan G. Kermode, Norma Deri, Alexandre Prat, Raymond Hupperts, Bruce V. Taylor, Gerardo Iuliano, Daniele Spitaleri, Cavit Boz, Roberto Bergamaschi, Raed Alroughani, Radek Ampapa, Vilija Jokubaitis, Jeannette Lechner-Scott, Maria Pia Amato, Olga Skibina, Alessandra Lugaresi, Steve Vucic, Ilya Kister, Stewart, Tamasine, Spelman, Tim, Havrdova, Eva, Horakova, Dana, Trojano, Maria, Izquierdo, Guillermo, Duquette, Pierre, Girard, Marc, Prat, Alexandre, Lugaresi, Alessandra, Grand'Maison, Francoi, Grammond, Pierre, Sola, Patrizia, Shaygannejad, Vahid, Hupperts, Raymond, Alroughani, Raed, Oreja-Guevara, Celia, Pucci, Eugenio, Boz, Cavit, Lechner-Scott, Jeannette, Bergamaschi, Roberto, Van Pesch, Vincent, Iuliano, Gerardo, Ramo, Cristina, Taylor, Bruce, Slee, Mark, Spitaleri, Daniele, Granella, Franco, Verheul, Freek, Mccombe, Pamela, Hodgkinson, Suzanne, Amato, Maria Pia, Vucic, Steve, Gray, Orla, Cristiano, Edgardo, Barnett, Michael, Sanchez Menoyo, Jose Lui, van Munster, Erik, Saladino, Maria Laura, Olascoaga, Javier, Prevost, Julie, Deri, Norma, Shaw, Cameron, Singhal, Bhim, Moore, Fraser, Rozsa, Csilla, Shuey, Neil, Skibina, Olga, Kister, Ilya, Petkovska-Boskova, Tatjana, Ampapa, Radek, Kermode, Allan, Butzkueven, Helmut, Jokubaitis, Vilija, Kalincik, Toma, and MSBase Study Group

Subjects
Adult, Male, 0301 basic medicine, medicine.medical_specialty, Multiple Sclerosis, Prognosi, multiple sclerosis, Disability Evaluation, 03 medical and health sciences, 0302 clinical medicine, cohort studies, Recurrence, Internal medicine, medicine, Humans, Disabled Persons, Prospective Studies, Prospective cohort study, Expanded Disability Status Scale, business.industry, Incidence (epidemiology), Multiple sclerosis, Interferon-beta, Middle Aged, Prognosis, medicine.disease, Functional system, Phenotype, Confidence interval, relapse phenotype, 030104 developmental biology, Neurology, multiple sclerosi, Chronic Disease, Disease Progression, Physical therapy, Female, observational study, outcome research, Neurology (clinical), business, 030217 neurology & neurosurgery, cohort studie, Cohort study
Abstract

Objective: This study evaluated the effect of relapse phenotype on disability accumulation in multiple sclerosis. Methods: Analysis of prospectively collected data was conducted in 19,504 patients with relapse-onset multiple sclerosis and minimum 1-year prospective follow-up from the MSBase cohort study. Multivariable linear regression models assessed associations between relapse incidence, phenotype and changes in disability (quantified with Expanded Disability Status Scale and its Functional System scores). Sensitivity analyses were conducted. Results: In 34,858 relapses recorded during 136,462 patient-years (median follow-up 5.9 years), higher relapse incidence was associated with greater disability accumulation (β = 0.16, p Conclusion: Relapses are associated with accumulation of neurological disability. Relapses in pyramidal, cerebellar and bowel/bladder systems have the greatest association with disability change. Therefore, prevention of these relapses is an important objective of disease-modifying therapy. The differential impact of relapse phenotypes on disability outcomes could influence management of treatment failure in multiple sclerosis.

Published
2016

3. Risk of relapse phenotype recurrence in multiple sclerosis

Author

Daniele Spitaleri, Joseph Herbert, Jeannette Lechner-Scott, Bhim Singhal, Tomas Kalincik, Carmen Adella Sirbu, Maria Edite Rio, Marc Girard, Celia Oreja-Guevara, Norbert Vella, Pierre Duquette, Raymond Hupperts, Francois Grand'Maison, Vincent Van Pesch, Alessandra Lugaresi, Maria Pia Amato, Raed Alroughani, Thor Petersen, Marcela Fiol, Gerardo Iuliano, Steve Vucic, Giorgio Giuliani, Ricardo Fernandez-Bolanos, Guillermo Izquierdo, Tatjana Petkovska-Boskova, Freek Verheul, Michael Barnett, Helmut Butzkueven, Mark Paine, Maria Laura Saladino, Jose Antonio Cabrera-Gomez, Erik van Munster, Maria Trojano, Roberto Bergamaschi, S. Flechter, Danny Liew, Orla Gray, Katherine Buzzard, Edgardo Cristiano, Cavit Boz, Mark Slee, Cameron Shaw, Aldo Savino, Vilija Jokubaitis, Csilla Rozsa, Fraser Moore, Pierre Grammond, John Parratt, MUMC+: MA Med Staf Spec Neurologie (9), Klinische Neurowetenschappen, RS: MHeNs - R1 - Cognitive Neuropsychiatry and Clinical Neuroscience, Kalincik T, Buzzard K, Jokubaitis V, Trojano M, Duquette P, Guillermo I, Girard M, Lugaresi A, Grammond P, Grand'maison F, Oreja-Guevara C, Boz C, Hupperts R, Petersen T, Giuliani G, Iuliano G, Lechner-Scott J, Barnett M, Bergamaschi R, Van Pesch V, Amato MP, van Munster E, Fernandez-Bolanos R, Verheul F, Fiol M, Cristiano E, Slee M, Rio ME, Spitaleri D, Alroughani R, Gray O, Saladino ML, Flechter S, Herbert J, Cabrera-Gomez JA, Vella N, Paine M, Shaw C, Moore F, Vucic S, Savino A, Singhal B, Petkovska-Boskova T, Parratt J, Sirbu CA, Rozsa C, Liew D, Butzkueven H, and on behalf of the MSBase Study Group

Subjects
Adult, Male, Risk, medicine.medical_specialty, phenotype, Disease, Logistic regression, MSBase, Multiple sclerosis, Disability Evaluation, Multiple Sclerosis, Relapsing-Remitting, Recurrence, Internal medicine, medicine, Humans, multiple sclerosis, relapse, symptom, prognosis, Aged, business.industry, Age Factors, presentation of neurological diseases, Middle Aged, medicine.disease, Phenotype, Natural history, Institutional repository, Neurology, Immunology, Disease Progression, Female, Observational study, prognosis, Neurology (clinical), business, Progressive disease
Abstract

Objectives: The aim was to analyse risk of relapse phenotype recurrence in multiple sclerosis and to characterise the effect of demographic and clinical features on this phenotype. Methods: Information about relapses was collected using MSBase, an international observational registry. Associations between relapse phenotypes and history of similar relapses or patient characteristics were tested with multivariable logistic regression models. Tendency of relapse phenotypes to recur sequentially was assessed with principal component analysis. Results: Among 14,969 eligible patients (89,949 patient-years), 49,279 phenotypically characterised relapses were recorded. Visual and brainstem relapses occurred more frequently in early disease and in younger patients. Sensory relapses were more frequent in early or non-progressive disease. Pyramidal, sphincter and cerebellar relapses were more common in older patients and in progressive disease. Women presented more often with sensory or visual symptoms. Men were more prone to pyramidal, brainstem and cerebellar relapses. Importantly, relapse phenotype was predicted by the phenotypes of previous relapses. (OR = 1.8–5, p = 10-14). Sensory, visual and brainstem relapses showed better recovery than other relapse phenotypes. Relapse severity increased and the ability to recover decreased with age or more advanced disease. Conclusion: Relapse phenotype was associated with demographic and clinical characteristics, with phenotypic recurrence significantly more common than expected by chance.

Published
2014

4. Multiple sclerosis in Latin America: A different disease course severity? A collaborative study from the MSBase Registry

Author

Cameron Shaw, Edgardo Cristiano, Aldo Savino, Juan Ignacio Rojas, Cavit Boz, Maria Pia Amato, Maria Edite Rio, Gerardo Iuliano, Jeannette Lechner-Scott, Fraser Moore, Guillermo Izquierdo, Tatjana Petkovska-Boskova, Celia Oreja-Guevara, Alessandra Lugaresi, Thor Petersen, Giorgio Giuliani, Liliana Patrucco, Maria Laura Saladino, Ricardo Fernandez-Bolanos, Mark Slee, Eli Skromne, Vetere Santiago, Pierre Grammond, Ilya Kister, Maria Trojano, Marc Girard, Norbert Vella, Norma Deri, Elizabeth A. Bacile, Pierre Duquette, Michael L. Barnett, Vincent Van Pesch, Steve Vucic, Mark Paine, Leontien Den Braber-Moerland, Walter Oleschko-Arruda, Helmut Butzkueven, Freek Verheul, Vilija Jokubaitis, Raymond Hupperts, Jose Antonio Cabrera-Gomez, Roberto Bergamaschi, Francois Grand'Maison, Marcela Fiol, Dieter Poehlau, Juan Ignacio Rojas, Liliana Patrucco, Maria Trojano, Alessandra Lugaresi, Guillermo Izquierdo, Helmut Butzkueven, Vilija Jokubaitis, Pierre Duquette, Marc Girard, Francois Grand’Maison, Pierre Grammond, Celia Oreja-Guevara, Raymond Hupperts, Cavit Boz, Thor Petersen, Roberto Bergamaschi, Giorgio Giuliani, Jeannette Lechner-Scott, Michael Barnett, Maria Edite Rio, Vincent Van Pesch, Maria Pia Amato, Gerardo Iuliano, Marcela Fiol, Mark Slee, Freek Verheul, Ricardo Fernandez-Bolanos, Dieter Poehlau, Maria Laura Saladino, Leontien Den BraberMoerland, Norma Deri, Walter Oleschko-Arruda, Jose Antonio Cabrera-Gomez, Mark Paine, Norbert Vella, Ilya Kister, Eli Skromne, Aldo Savino, Cameron Shaw, Fraser Moore, Steve Vucic, Tatjana Petkovska-Boskova, Elizabeth Alejandra Bacile Bacile, Vetere Santiago, Edgardo Cristiano, and MSBase Study Group

Subjects
Gerontology, Latin Americans, Multiple sclerosis, Disease progression, South America, medicine.disease, Disease course, Cellular and Molecular Neuroscience, disease progression, Geography, medicine, Multiple sclerosi, Original Article, MSSS, Neurology (clinical), Demography
Abstract

Limited data suggest that multiple sclerosis (MS) in Latin America (LA) could be less severe than in the rest of the world. The objective was to compare the course of MS between LA and other regions. Methods Centers from 18 countries with >20 cases enrolled in the MSBase Registry participated. Patients with MS with a disease duration of >1 year and Results A total of 9610 patients were included. Patients were from: Europe, 6290 (65.6%); North America, 1609 (16.7%); Australia, 1119 (11.6%); and LA, 592 (6.1%). The mean MSSS in patients from LA was 4.47 ± 2.8, 4.53 ± 2.8 in North America, 4.51 ± 2.8 in Europe and 4.49 ± 2.7 in Australia. Mean MSSS in the northern hemisphere was 4.51 ± 1.6 compared to 4.48 ± 1.9 in the southern hemisphere. No differences were found for MSSS among hemispheres ( p = 0.68), regions ( p = 0.96) or countries ( p = 0.50). Conclusions Our analyses did not discover any difference in mean MSSS among patients from different regions, hemispheres or countries.

Published
2015

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