Spectrum of phenotypic anomalies in four families with deletion of the SHOX enhancer region

BMC Medical Genetics

Liborio Stuppia¹  Angelika Mohn³  Francesco Chiarelli³  Antonio Raffaele Cotroneo²  Massimo Savastano²  Giovanni Cannataro²  Sara Franchi¹  Valentina Chiavaroli³  Chiara Palka³  Valentina Gatta¹ 

[1] Center of Excellence on Aging, “G. d’Annunzio” University Foundation, via dei Vestini 31, 66013 Chieti, Italy;Department of Neuroscience and Imaging, Section of Diagnostic Imaging and Therapy, Radiology Division, “G. d’Annunzio” University of Chieti, Chieti, Italy;Department of Paediatrics, “G. d’Annunzio” University of Chieti, via dei Vestini 5, 66013 Chieti, Italy

关键词: Short stature;    SHOX;    MLPA;    Madelung deformity;   

Others  :  1091102
DOI  :  10.1186/1471-2350-15-87

 received in 2014-03-31, accepted in 2014-07-08,  发布年份 2014

【 摘 要 】

Background

SHOX alterations have been reported in 67% of patients affected by Léri-Weill dyschondrosteosis (LWD), with a larger prevalence of gene deletions than point mutations. It has been recently demonstrated that these deletions can involve the SHOX enhancer region, rather that the coding region, with variable phenotype of the affected patients.

Here, we report a SHOX gene analysis carried out by MLPA in 14 LWD patients from 4 families with variable phenotype.

Case presentation

All patients presented a SHOX enhancer deletion. In particular, a patient with a severe bilateral Madelung deformity without short stature showed a homozygous alteration identical to the recently described 47.5 kb PAR1 deletion. Moreover, we identified, for the first time, in three related patients with a severe bilateral Madelung deformity, a smaller deletion than the 47.5 kb PAR1 deletion encompassing the same enhancer region (ECR1/CNE7).

Conclusions

Data reported in this study provide new information about the spectrum of phenotypic alterations showed by LWD patients with different deletions of the SHOX enhancer region.

【 授权许可】

   
2014 Gatta et al.; licensee BioMed Central Ltd.

【 图 表 】

Figure 1.

Figure 2.

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