Characteristics of the muscle involvement along the disease progression in a large cohort of oculopharyngodistal myopathy compared to oculopharyngeal muscular dystrophy.
Oculopharyngeal muscular dystrophy
Oculopharyngodistal myopathy
Skeletal muscle imaging
Journal
Journal of neurology
ISSN: 1432-1459
Titre abrégé: J Neurol
Pays: Germany
ID NLM: 0423161
Informations de publication
Date de publication:
Dec 2023
Dec 2023
Historique:
received:
18
06
2023
accepted:
25
07
2023
revised:
24
07
2023
medline:
9
11
2023
pubmed:
27
8
2023
entrez:
27
8
2023
Statut:
ppublish
Résumé
Oculopharyngodistal myopathy (OPDM) is an autosomal dominant myopathy clinically characterized by distal muscle weakness. Even though the identification of four causative genes, LRP12, GIPC1, NOTCH2NLC and RILPL1, it is unclear whether the myopathy progressed similarly among OPDM subtypes. We aimed to establish diagnostic clues in muscle imaging of OPDM in comparison with clinicopathologically similar oculopharyngeal muscular dystrophy (OPMD). Axial muscle CT and/or T1-weighted MRI data from 54 genetically confirmed patients with OPDM (OPDM_LRP12; n = 43, OPDM_GIPC1; n = 6, OPDM_NOTCH2NLC; n = 5) and 57 with OPMD were evaluated. We scored the degree of fat infiltration in each muscle by modified Mercuri score and performed hierarchical clustering analyses to classify the patients and infer the pattern of involvement on progression. All OPDM subtypes showed a similar pattern of distribution in the affected muscles; soleus and medial gastrocnemius involved in the early stage, followed by tibialis anterior and extensor digitorum longus. For differentiating OPDM and OPMD, severely affected gluteus medius/minimus and adductor magnus was indicative of OPMD. We identified a diagnostic muscle involvement pattern in OPDM reflecting its natural history. The results of this study will help in the appropriate intervention based on the diagnosis of OPDM, including its stage.
Sections du résumé
BACKGROUND AND OBJECTIVES
OBJECTIVE
Oculopharyngodistal myopathy (OPDM) is an autosomal dominant myopathy clinically characterized by distal muscle weakness. Even though the identification of four causative genes, LRP12, GIPC1, NOTCH2NLC and RILPL1, it is unclear whether the myopathy progressed similarly among OPDM subtypes. We aimed to establish diagnostic clues in muscle imaging of OPDM in comparison with clinicopathologically similar oculopharyngeal muscular dystrophy (OPMD).
METHODS
METHODS
Axial muscle CT and/or T1-weighted MRI data from 54 genetically confirmed patients with OPDM (OPDM_LRP12; n = 43, OPDM_GIPC1; n = 6, OPDM_NOTCH2NLC; n = 5) and 57 with OPMD were evaluated. We scored the degree of fat infiltration in each muscle by modified Mercuri score and performed hierarchical clustering analyses to classify the patients and infer the pattern of involvement on progression.
RESULTS
RESULTS
All OPDM subtypes showed a similar pattern of distribution in the affected muscles; soleus and medial gastrocnemius involved in the early stage, followed by tibialis anterior and extensor digitorum longus. For differentiating OPDM and OPMD, severely affected gluteus medius/minimus and adductor magnus was indicative of OPMD.
DISCUSSION
CONCLUSIONS
We identified a diagnostic muscle involvement pattern in OPDM reflecting its natural history. The results of this study will help in the appropriate intervention based on the diagnosis of OPDM, including its stage.
Identifiants
pubmed: 37634163
doi: 10.1007/s00415-023-11906-9
pii: 10.1007/s00415-023-11906-9
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
5988-5998Subventions
Organisme : National Center of Neurology and Psychiatry
ID : 2-5
Organisme : National Center of Neurology and Psychiatry
ID : 29-4
Organisme : Japan Agency for Medical Research and Development
ID : 20ek0109490h0001
Organisme : Japan Agency for Medical Research and Development
ID : JP19ek0109285h0003
Organisme : Japan Agency for Medical Research and Development
ID : JP21ek0109490h0002
Investigateurs
Takahiko Mukaino
(T)
Mori-Yoshimura Madoka
(MY)
Makiko Nagai
(M)
Masayuki Ochi
(M)
Makoto Shibata
(M)
Kazutaka Shiomi
(K)
Satoshi Yamashita
(S)
Toru Yamashita
(T)
Informations de copyright
© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany.
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