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Lookup NU author(s): Dr Nikoletta Nikolenko, Dr Cecilia Jimenez MorenoORCiD, Professor Grainne Gorman, Professor Hanns Lochmuller
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
© 2019, The Author(s). Objective: The objective of this cross-sectional, observational study was to investigate the disease burden of myotonic dystrophy type 1 (DM1), a disabling muscle disorder. Methods: Adults with DM1 were recruited as part of the PhenoDM1 study from Newcastle University (Newcastle upon Tyne, UK). Disease burden data were recorded through the Individualized Neuromuscular Quality of Life (INQoL) questionnaire. Results were examined by sex and clinical variables [e.g. the six-minute walk test (6MWT), the Mini Mental State Examination, and estimated progenitor and modal allele CTG repeat length]. Results: Our sample consisted of 60 patients with DM1 (mean age: 45 years; 45% female). Muscle weakness and fatigue constituted the two most common disease manifestations, reported by 93% and 90% of patients, respectively, followed by muscle locking (73%). Most patients (> 55%) reported feeling anxious/worried, depressed, frustrated, and/or having low confidence/self-esteem, 23% and 33% indicated substantial impairment of daily and leisure activities, respectively, and 47% did not work as a consequence of the disease. Estimated progenitor CTG length corrected by age correlated surprisingly well with INQoL scores. Differences by sex were generally minor. Conclusion: We show that DM1 is associated with a substantial disease burden resulting in impairment across many different domains of patients’ lives, emphasizing the need for a holistic approach to medical management. Our results also show that the INQoL records relevant information about patients with DM1, but that further investigation of the psychometric properties of the scale is needed for meaningful interpretation of instrument scores.
Author(s): Landfeldt E, Nikolenko N, Jimenez-Moreno C, Cumming S, Monckton DG, Gorman G, Turner C, Lochmuller H
Publication type: Article
Publication status: Published
Journal: Journal of Neurology
Year: 2019
Volume: 266
Issue: 4
Pages: 988-1006
Print publication date: 01/04/2019
Online publication date: 20/02/2019
Acceptance date: 03/02/2019
Date deposited: 04/03/2019
ISSN (print): 0340-5354
ISSN (electronic): 1432-1459
Publisher: Springer Medizin
URL: https://doi.org/10.1007/s00415-019-09228-w
DOI: 10.1007/s00415-019-09228-w
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