J Clin Neurol.  2019 Jul;15(3):395-397. 10.3988/jcn.2019.15.3.395.

A Spinal Muscular Atrophy Family with Intrafamilial Phenotype Differences Despite the Same Copy-Number Variation in SMN2

Affiliations
  • 1Department of Neurology, Dongguk University College of Medicine, Gyeongju, Korea.
  • 2Department of Community Medicine and Social Healthcare Science, Kobe Univiersity Graduate School of Medicine, Kobe, Japan.
  • 3Department of Neurology, Pusan National University Yangsan Hospital, Yangsan, Korea.
  • 4Department of Neurology, School of Medicine, Kyungpook National University, Daegu, Korea. neurojspark@gmail.com
  • 5Department of Neurology, Kyungpook National University Chilgok Hospital, Daegu, Korea.

Abstract

No abstract available.


MeSH Terms

Humans
Muscular Atrophy, Spinal*
Phenotype*

Figure

  • Fig. 1 Muscle MRI findings for the proband (A) and her elder brother (B). The images show selective involvement of muscles with relatively spared involvement in the adductor longus (arrows) and gracilis (arrowheads) muscles.


Reference

1. Tran VK, Sasongko TH, Hong DD, Hoan NT, Dung VC, Lee MJ, et al. SMN2 and NAIP gene dosages in Vietnamese patients with spinal muscular atrophy. Pediatr Int. 2008; 50:346–351. PMID: 18533950.
Article
2. Melki K, Lefebvre S, Burglen L, Burlet P, Clermont O, Millasseau P, et al. De novo and inherited deletions of the 5q13 region in spinal muscular atrophies. Science. 1994; 264:1474–1477. PMID: 7910982.
Article
3. Durmus H, Yilmaz R, Gulsen-Parman Y, Oflazer-Serdaroglu P, Cuttini M, Dursun M, et al. Muscle magnetic resonance imaging in spinal muscular atrophy type 3: selective and progressive involvement. Muscle Nerve. 2017; 55:651–656. PMID: 27543937.
Article
4. Feldkötter M, Schwarzer V, Wirth R, Wienker TF, Wirth B. Quantitative analyses of SMN1 and SMN2 based on real-time LightCycler PCR: fast and highly reliable carrier testing and prediction of severity of spinal muscular atrophy. Am J Hum Genet. 2002; 70:358–368. PMID: 11791208.
Article
5. Wirth B, Herz M, Wetter A, Moskau S, Hahnen E, Rudnik-Schöneborn S, et al. Quantitative analysis of survival motor neuron copies: identification of subtle SMN1 mutations in patients with spinal muscular atrophy, genotype-phenotype correlation, and implications for genetic counseling. Am J Hum Genet. 1999; 64:1340–1356. PMID: 10205265.
Article
6. Raymond K, Levasseur M, Mathieu J, Desrosiers J, Gagnon C. A 9-year follow-up study of the natural progression of upper limb performance in myotonic dystrophy type 1: a similar decline for phenotypes but not for gender. Neuromuscul Disord. 2017; 27:673–682. PMID: 28527585.
Article
7. Jedrzejowska M, Milewski M, Zimowski J, Borkowska J, Kostera-Pruszczyk A, Sielska D, et al. Phenotype modifiers of spinal muscular atrophy: the number of SMN2 gene copies, deletion in the NAIP gene and probably gender influence the course of the disease. Acta Biochim Pol. 2009; 56:103–108. PMID: 19287802.
Article
8. Cuscó I, Barceló MJ, Rojas-García R, Illa I, Gámez J, Cervera C, et al. SMN2 copy number predicts acute or chronic spinal muscular atrophy but does not account for intrafamilial variability in siblings. J Neurol. 2006; 253:21–25. PMID: 15981080.
Article
Full Text Links
  • JCN
Actions
Cited
CITED
export Copy
Close
Share
  • Twitter
  • Facebook
Similar articles
Copyright © 2024 by Korean Association of Medical Journal Editors. All rights reserved.     E-mail: koreamed@kamje.or.kr