X-linked myotubular myopathy: A prospective international natural history study.
Journal
Neurology
ISSN: 1526-632X
Titre abrégé: Neurology
Pays: United States
ID NLM: 0401060
Informations de publication
Date de publication:
16 04 2019
16 04 2019
Historique:
received:
19
09
2018
accepted:
20
12
2018
pubmed:
25
3
2019
medline:
8
1
2020
entrez:
24
3
2019
Statut:
ppublish
Résumé
Because X-linked myotubular myopathy (XLMTM) is a rare neuromuscular disease caused by mutations in the We designed an international prospective and longitudinal natural history study in patients with XLMTM and assessed muscle strength and motor and respiratory functions over the first year of follow-up. The humoral immunity against adeno-associated virus serotype 8 was also monitored. Forty-five male patients aged 3.5 months to 56.8 years were enrolled between May 2014 and May 2017. Thirteen patients had a mild phenotype (no ventilation support), 7 had an intermediate phenotype (ventilation support less than 12 hours a day), and 25 had a severe phenotype (ventilation support 12 or more hours a day). Most strength and motor function assessments could be performed even in very weak patients. Motor Function Measure 32 total score, grip and pinch strengths, and forced vital capacity, forced expiratory volume in the first second of exhalation, and peak cough flow measures discriminated the 3 groups of patients. Disease history revealed motor milestone loss in several patients. Longitudinal data on 37 patients showed that the Motor Function Measure 32 total score significantly decreased by 2%. Of the 38 patients evaluated, anti-adeno-associated virus type 8 neutralizing activity was detected in 26% with 2 patients having an inhibitory titer >1:10. Our data confirm that XLMTM is slowly progressive for male survivors regardless of their phenotype and provide outcome validation and natural history data that can support clinical development in this population. NCT02057705.
Identifiants
pubmed: 30902907
pii: WNL.0000000000007319
doi: 10.1212/WNL.0000000000007319
pmc: PMC6550499
doi:
Banques de données
ClinicalTrials.gov
['NCT02057705']
Types de publication
Clinical Trial
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e1852-e1867Subventions
Organisme : NCATS NIH HHS
ID : UL1 TR001102
Pays : United States
Informations de copyright
© 2019 American Academy of Neurology.
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