Eight new mutations and the expanding phenotype variability in muscular dystrophy caused by ANO5

S. Penttilä, J. Palmio, T. Suominen, O. Raheem, A. Evilä, N. Muelas Gomez, G. Tasca, L. B. Waddell, N. F. Clarke, A. Barboi, P. Hackman, B. Udd

Research output: Contribution to journalArticle

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Abstract

Objective: Description of 8 new ANO5 mutations and significant expansion of the clinical phenotype spectrum associated with previously known and unknown mutations to improve diagnostic accuracy. Methods: DNA samples of 101 patients in 95 kindreds at our quaternary referral center in Finland, who had undetermined limb-girdle muscular dystrophy (LGMD), calf distal myopathy, or creatine kinase (CK) elevations of more than 2,000 IU/L, were selected for ANO5 genetic evaluation, and the clinical findings of patients with mutations were retrospectively analyzed. Results: A total of 25 patients with muscular dystrophy caused by 11 different recessive mutations in the ANO5 gene were identified. The vast majority of mutations, 8 of 11, proved to be previously unknown new mutations. The most frequent mutation, c.2272C>T (p.R758C), was present in 20 patients. The phenotypes associated with this and the common European mutation, c.191dupA, varied from nearly asymptomatic high hyperCKemia to severe LGMD with consistently milder phenotypes in female patients. Conclusions: Mutations in ANO5 are a frequent cause of undetermined muscular dystrophy, with both distal and proximal presentation. Other types include high hyperCKemia, myalgia, or calf hypertrophy over decades without significant weakness, especially in female patients. Mutations are distributed all over the gene, indicating that muscular dystrophy caused by ANO5 can be expected to occur in all populations.

Original languageEnglish
Pages (from-to)897-903
Number of pages7
JournalNeurology
Volume78
Issue number12
DOIs
Publication statusPublished - Mar 20 2012

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Muscular Dystrophies
Phenotype
Mutation
Limb-Girdle Muscular Dystrophies
Distal Myopathies
Myalgia
Finland
Creatine Kinase
Hypertrophy
Genes
Referral and Consultation

ASJC Scopus subject areas

  • Clinical Neurology
  • Arts and Humanities (miscellaneous)

Cite this

Penttilä, S., Palmio, J., Suominen, T., Raheem, O., Evilä, A., Gomez, N. M., ... Udd, B. (2012). Eight new mutations and the expanding phenotype variability in muscular dystrophy caused by ANO5. Neurology, 78(12), 897-903. https://doi.org/10.1212/WNL.0b013e31824c4682

Eight new mutations and the expanding phenotype variability in muscular dystrophy caused by ANO5. / Penttilä, S.; Palmio, J.; Suominen, T.; Raheem, O.; Evilä, A.; Gomez, N. Muelas; Tasca, G.; Waddell, L. B.; Clarke, N. F.; Barboi, A.; Hackman, P.; Udd, B.

In: Neurology, Vol. 78, No. 12, 20.03.2012, p. 897-903.

Research output: Contribution to journalArticle

Penttilä, S, Palmio, J, Suominen, T, Raheem, O, Evilä, A, Gomez, NM, Tasca, G, Waddell, LB, Clarke, NF, Barboi, A, Hackman, P & Udd, B 2012, 'Eight new mutations and the expanding phenotype variability in muscular dystrophy caused by ANO5', Neurology, vol. 78, no. 12, pp. 897-903. https://doi.org/10.1212/WNL.0b013e31824c4682
Penttilä S, Palmio J, Suominen T, Raheem O, Evilä A, Gomez NM et al. Eight new mutations and the expanding phenotype variability in muscular dystrophy caused by ANO5. Neurology. 2012 Mar 20;78(12):897-903. https://doi.org/10.1212/WNL.0b013e31824c4682
Penttilä, S. ; Palmio, J. ; Suominen, T. ; Raheem, O. ; Evilä, A. ; Gomez, N. Muelas ; Tasca, G. ; Waddell, L. B. ; Clarke, N. F. ; Barboi, A. ; Hackman, P. ; Udd, B. / Eight new mutations and the expanding phenotype variability in muscular dystrophy caused by ANO5. In: Neurology. 2012 ; Vol. 78, No. 12. pp. 897-903.
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