Abstract
Autosomal recessive ulcero-mutilating neuropathy with spastic paraplegia is a very rare disease since only few cases were described up to date. We report in this study a consanguineous Moroccan family with four affected males with this syndrome. The disease onset was in early infancy, with spastic paraplegia and sensory loss leading to mutilating acropathy. Electrophysiological studies revealed a severe axonal sensory neuropathy, magnetic resonance imaging ruled out compression of spinal cord and biological investigations showed decreased levels of Apo B, total cholesterol and triglycerides. A genomewide search was conducted in this family and linkage was found to chromosome 5p. Analysis of recombination events and LOD score calculation map the responsible gene in a 25 cM genetic interval between markers D5S2054 and D5S648. A maximum LOD score value of 3.92 was obtained for all markers located in this candidate interval. This study establishes the presence of a locus for autosomal recessive mutilating sensory neuropathy with spastic paraplegia on chromosome 5p15.31–14.1.
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Acknowledgements
We thank all the family members for their cooperation throughout this study. This research was supported by the Presidency of the University Mohamed V – Souissi (Rabat, Morocco), and the Association Marocaine de Neurogénétique (Morocco). We are grateful for Genome Biotechnology SARL for their collaboration.
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Bouhouche, A., Benomar, A., Bouslam, N. et al. Autosomal recessive mutilating sensory neuropathy with spastic paraplegia maps to chromosome 5p15.31–14.1. Eur J Hum Genet 14, 249–252 (2006). https://doi.org/10.1038/sj.ejhg.5201537
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DOI: https://doi.org/10.1038/sj.ejhg.5201537
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