Does the severity of the LGMD2A phenotype in compound heterozygotes depend on the combination of mutations?
Does the severity of the LGMD2A phenotype in compound heterozygotes depend on the combination of mutations?
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复合杂合子中 LGMD2A 表型的严重程度是否取决于突变的组合?
DOI:
10.1002/mus.22194
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发表时间:
2011
期刊:
影响因子:
3.4
通讯作者:
Lopez de Munain A
中科院分区:
文献类型:
--
作者:
Saenz A;Ono Y;Sorimachi H;Goicoechea M;Leturcq F;Blazquez L;Garcia-Bragado F;Marina A;Poza JJ;Azpitarte M;Doi N;Urtasun M;Kaplan JC;Lopez de Munain A
Introduction: Limb‐girdle muscular dystrophy type 2A (LGMD2A) is caused by a deficiency of calpain‐3/p94. Although the symptoms in most LGMD2A patients are generally homogeneous, some variation in the severity and progression of the disease has been reported.Methods: We describe 2 patients who carry the same combination of compound heterozygous mutations (pG222R/pR748Q) and whose symptoms are exceptionally benign compared to homozygotes with each missense mutation.Results: The benign phenotype observed in association with the combined pG222R and pR748Q mutations suggested that it may result from a compensatory effect of compound heterozygosity rather than the individual mutations themselves. Our analyses revealed that these two mutations exert different effects on the protease activity of calpain‐3, suggesting “molecular complementation” in these patients.Conclusion: We propose several hypotheses to explain how this specific combination of mutations may rescue the normal proteolytic activity of calpain‐3, resulting in an exceptionally benign phenotype. Muscle Nerve, 2011
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影响因子:
2.8
作者:
C. Pollitt;L. Anderson;Robert Pogue;Keith Davison;Angela Pyle;K. Bushby
通讯作者:
K. Bushby
DOI:
10.5692/clinicalneurol.48.651
发表时间:
2008
期刊:
Rinshō shinkeigaku Clinical neurology
影响因子:
--
作者:
T. Shirafuji;Y. Otsuka;Hiroshi Kobessho;N. Minami;Y. Hayashi;I. Nishino;F. Kanda
通讯作者:
F. Kanda
影响因子:
3.1
作者:
A. Starling;F. Paula;H. Silva;M. Vainzof;M. Zatz
通讯作者:
M. Zatz
影响因子:
1.4
作者:
Topaloglu, H;Dincer, P;Beckmann, JS
通讯作者:
Beckmann, JS
影响因子:
4.8
作者:
T. Saido;M. Yokota;S. Nagao;I. Yamaura;E. Tani;T. Tsuchiya;K. Suzuki;Seiichi Kawashima
通讯作者:
Seiichi Kawashima