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A multinational study on motor function in early-onset FSHD

Lookup NU author(s): Dr Michela Guglieri

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Abstract

© 2018 American Academy of Neurology. Objectives To investigate motor function associations with age, sex, and D4Z4 repeats among participants with early-onset facioscapulohumeral muscular dystrophy (FSHD) type 1 as defined by weakness onset before 10 years of age. Methods We collected standardized motor assessments, including manual muscle testing (MMT), quantitative muscle testing, functional motor evaluations, and clinical severity scores (CSSs), at 12 Cooperative International Neuromuscular Research Group centers. To measure associations, we used linear regression models adjusted for sex, evaluation age, age at onset of weakness, and D4Z4 repeats. Results Among 52 participants (60% female, mean age 22.9 ± 14.7 years), weakness was most pronounced in the shoulder and abdominal musculature. Older enrollment age was associated with greater CSSs (p = 0.003). When adjusted for enrollment age, sex, and D4Z4 repeats, younger age at onset of facial weakness was associated with greater CSSs, slower velocities in timed function tests, and lower MMT scores (p < 0.05). Conclusion Significant clinical variability was observed in early-onset FSHD. Earlier age at onset of facial weakness was associated with greater disease severity. Longitudinal assessments are needed to determine the rate of disease progression in this population.


Publication metadata

Author(s): Mah JK, Feng J, Jacobs MB, Duong T, Carroll K, De Valle K, Carty CL, Morgenroth LP, Guglieri M, Ryan MM, Clemens PR, Thangarajh M, Webster R, Smith E, Connolly AM, McDonald CM, Karachunski P, Tulinius M, Harper A, Cnaan A, Chen Y-W

Publication type: Article

Publication status: Published

Journal: Neurology

Year: 2018

Volume: 90

Issue: 15

Pages: e1333-e1338

Print publication date: 10/04/2018

Online publication date: 14/03/2018

Acceptance date: 01/01/1900

ISSN (print): 0028-3878

ISSN (electronic): 1526-632X

Publisher: Lippincott Williams and Wilkins

URL: https://doi.org/10.1212/WNL.0000000000005297

DOI: 10.1212/WNL.0000000000005297


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