(2024) Examining the environmental risk factors of progressive-onset and relapsing-onset multiple sclerosis: recruitment challenges, potential bias, and statistical strategies. Journal of Neurology. pp. 472-485. ISSN 1432-1459 (Electronic) 0340-5354 (Print) 0340-5354 (Linking)
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Abstract
It is unknown whether the currently known risk factors of multiple sclerosis reflect the etiology of progressive-onset multiple sclerosis (POMS) as observational studies rarely included analysis by type of onset. We designed a case-control study to examine associations between environmental factors and POMS and compared effect sizes to relapse-onset MS (ROMS), which will offer insights into the etiology of POMS and potentially contribute to prevention and intervention practice. This study utilizes data from the Primary Progressive Multiple Sclerosis (PPMS) Study and the Australian Multi-center Study of Environment and Immune Function (the AusImmune Study). This report outlines the conduct of the PPMS Study, whether the POMS sample is representative, and the planned analysis methods. The study includes 155 POMS, 204 ROMS, and 558 controls. The distributions of the POMS were largely similar to Australian POMS patients in the MSBase Study, with 54.8 female, 85.8 POMS born before 1970, mean age of onset of 41.44 +/- 8.38 years old, and 67.1 living between 28.9 and 39.4 degrees S. The POMS were representative of the Australian POMS population. There are some differences between POMS and ROMS/controls (mean age at interview: POMS 55 years vs. controls 40 years; sex: POMS 53 female vs. controls 78 female; location of residence: 14.3 of POMS at a latitude </= 28.9 degrees S vs. 32.8 in controls), which will be taken into account in the analysis. We discuss the methodological issues considered in the study design, including prevalence-incidence bias, cohort effects, interview bias and recall bias, and present strategies to account for it. Associations between exposures of interest and POMS/ROMS will be presented in subsequent publications.
| Item Type: | Article |
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| Keywords: | Adult Female Humans Male Middle Aged Age of Onset Australia/epidemiology Case-Control Studies *Multiple Sclerosis/epidemiology/etiology *Multiple Sclerosis, Chronic Progressive/epidemiology/etiology Recurrence Risk Factors Multicenter Studies as Topic Bias Case-control Environmental factors Progressive-onset multiple sclerosis Subject recruitment Almirall, Alexion, Biogen, Bristol, Berck, Novartis and Roche, and further received research grant by Biogen, Merck and Roche and by FISM, Reload Association (Onlus), Italian Health Minister, University of Catania. Sara Eichau received speaker honoraria and consultant fees from Biogen Idec, Novartis, Merck, Bayer, Sanofi Genzyme, Roche and Teva. Dana Horakova received compensation for travel, speaker honoraria and consultant fees from Biogen, Novartis, Merck Healthcare KGaA (Darmstadt, Germany), Bayer, Sanofi, Roche, and Teva, as well as support for research activities from Biogen. She was also supported by the Charles University: Cooperatio Program in neuroscience. Eva Kubala Havrdova received honoraria/research support from Biogen, Merck Serono, Novars, Roche, and Teva has been member of advisory boards for Actelion, Biogen, Celgene, Merck Serono, Novars, and Sanofi Genzyme. Francois Grand'Maison received honoraria or research funding from Biogen, Genzyme, Novartis, Teva Neurosciences, and ATARA Pharmaceuticals. Raed Alroughani received honoraria as a speaker and for serving on scientific advisory boards from Bayer, Biogen, GSK, Merck, Novartis, Roche and Sanofi-Genzyme. Maria Pia Amato received honoraria as consultant on scientific advisory boards by Biogen, Bayer-Schering, Merck, Teva and Sanofi-Aventis has received research grants by Biogen, Bayer-Schering, Merck, Teva and Novartis. Ayse Altintas received speaker honoraria from Merck, Alexion received travel and registration grants from Merck. Pierre Duquette served on editorial boards and has been supported to attend meetings by EMD, Biogen, Novartis, Genzyme, and TEVA Neuroscience. He holds grants from the CIHR and the MS Society of Canada and has received funding for investigator-initiated trials from Biogen, Novartis, and Genzyme. Yolanda Blanco received speaker honoraira from Merck, Biogen, Brystol, Novartis and Sanofi. Cristina Ramo-Tello received research funding, compensation for travel or speaker honoraria from Biogen, Novartis, Bristol, Janssen, Sanofi, Merck and Almirall. Guy Laureys received travel and/or consultancy compensation from Sanofi-Genzyme, Roche, Teva, Merck, Novartis, Celgene, Biogen. Tomas Kalincik served on scientific advisory boards for MS International Federation and World Health Organization, BMS, Roche, Janssen, Sanofi Genzyme, Novartis, Merck and Biogen, steering committee for Brain Atrophy Initiative by Sanofi Genzyme, received conference travel support and/or speaker honoraria from WebMD Global, Eisai, Novartis, Biogen, Roche, Sanofi-Genzyme, Teva, BioCSL and Merck and received research or educational event support from Biogen, Novartis, Genzyme, Roche, Celgene and Merck. Samia J. Khoury received compensation for scientific advisory board activity from Merck and Roche. Bhim Singhal received consultancy honoraria and compensation for travel from Biogen and Merck. Saloua Mrabet has received a MENACTRIMS clinical fellowship grant (2020). Nevin John NAJ is a local principal investigator on commercial studies funded by Novartis, Biogen, Amicus and Sanofi. Stella Hughes has received unrestricted educational grants or speaking honoraria from Biogen, Merck Serono, Novartis, Roche and Sanofi Genzyme. Pamela McCombe received honoraria and consulting fees from Novartis, Bayer Schering and Sanofi and travel grants from Novartis, Biogen and Bayer Schering. Received speakers fees and travel grants from Novartis, Biogen, T'evalua, Sanofi. Radek Ampapa received conference travel support from Novartis, Teva, Biogen, Bayer and Merck and has participated in a clinical trials by Biogen, Novartis, Teva and Actelion. Anneke van der Walt served on advisory boards and receives unrestricted research grants from Novartis, Biogen, Merck and Roche She has received speaker's honoraria and travel support from Novartis, Roche, and Merck. She receives grant support from the National Health and Medical Research Council of Australia and MS Research Australia. Helmut Butzkueven received institutional (Monash University) funding from Biogen, F. Hoffmann-La Roche Ltd, Merck, Alexion, CSL, and Novartis has carried out contracted research for Novartis, Merck, F. Hoffmann-La Roche Ltd and Biogen has taken part in speakers' bureaus for Biogen, Genzyme, UCB, Novartis, F. Hoffmann-La Roche Ltd and Merck has received personal compensation from Oxford Health Policy Forum for the Brain Health Steering Committee. Koen de Gans served on scientific advisory boards for Roche, Janssen, Sanofi-Genzyme, Novartis and Merck, received conference fee and travel support from Novartis, Biogen, Sanofi-Genzyme, Teva, Abbvie and Merck and received educational event support from Novartis. Chris McGuigan received honoraria/research funding from Biogen, BMS, Jannsen, Merck, Novartis & Roche. Celia Oreja-Guevara received honoraria as consultant on scientific advisory boards from Biogen, Celgene, Merck, Novartis, Roche, Sanofi-Genzyme and TEVA. Maria Jose Sa received consulting fees, speaker honoraria, and/or travel expenses for scientific meetings from Alexion, Bayer Healthcare, Biogen, Bristol Myers Squibb, Celgene, Janssen, Merck-Serono, Novartis, Roche, Sanofi and Teva. Thor Petersen received funding from Biogen, Merck, Novartis, Sanofi-Aventis, Roche, and Genzyme. Angel Perez sempere received honoraria as consultant on scientific advisory boards from Biogen, Merck, Novartis, Roche and TEVA. Bart Van Wijmeersch received research and travel grants, honoraria for MS-Expert advisor and Speaker fees from Almirall, Biogen, BMS, Imcyse, Janssen, Sanofi, Merck, Novartis, Roche and Teva. Nikolaos Grigoriadis travel support and/or honoraria and/or research grants and/or lecture fees and/or advisory services and/or consulting fees from Novartis, Bayer, Merck, Genesis, Sanofi, Specifar, Roche, Biogen, Teva, Mylan, Merck Serono, Sanofi Genzyme, Celgene, and ELPEN. Julie Prevost accepted travel compensation from Novartis, Biogen, Genzyme, Teva, and speaking honoraria from Biogen, Novartis, Genzyme and Teva. Orla Gray received honoraria as consultant on scientific advisory boards for Genzyme, Biogen, Merck, Roche, and Novartis has received travel grants from Biogen, Merck, Roche, and Novartis has participated in clinical trials by Biogen and Merck. She has received research grant support from Biogen. Tamara Castillo Trivino received speaking/consulting fees and/or travel funding from Almirall, Biogen, Bristol Myers Squibb, Janssen, Merck, Novartis, Roche and Sanofi-Genzyme. Richard Macdonell served on scientific advisory boards for Roche, Biogen, Novartis, Teva and Genzyme and has received conference travel support from Biogen and Novartis. His institution has received research support from Biogen, Merck and Novartis. Alessandra Lugaresi has served as a Biogen, Bristol Myers Squibb, Merck Serono, Novartis, Roche, Sanofi/Genzyme Advisory Board Member. She received congress and travel/accommodation expense compensations or speaker honoraria from Alexion, Biogen, Merck Serono, Novartis, Roche (2020), Sanofi/Genzyme, and Fondazione Italiana Sclerosi Multipla (FISM). Her institutions received research grants from Novartis and Sanofi/Genzyme. |
| Page Range: | pp. 472-485 |
| Journal or Publication Title: | Journal of Neurology |
| Journal Index: | Pubmed |
| Volume: | 271 |
| Number: | 1 |
| Identification Number: | https://doi.org/10.1007/s00415-023-11980-z |
| ISSN: | 1432-1459 (Electronic) 0340-5354 (Print) 0340-5354 (Linking) |
| Depositing User: | خانم ناهید ضیائی |
| URI: | http://eprints.mui.ac.ir/id/eprint/30386 |
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