Skip to main content
Top
Published in: Italian Journal of Pediatrics 1/2015

Open Access 01-12-2015 | Case report

Legius syndrome: case report and review of literature

Authors: Elisa Benelli, Irene Bruno, Chiara Belcaro, Alessandro Ventura, Irene Berti

Published in: Italian Journal of Pediatrics | Issue 1/2015

Login to get access

Abstract

A 8-month-old child was referred to our Dermatologic Unit for suspected Neurofibromatosis type 1 (NF 1), because of the appearance, since few days after birth, of numerous café-au-lait spots (seven larger than 5 mm); no other sign evocative of NF 1 was found. Her family history was remarkable for the presence of multiple café-au-lait spots in the mother, the grandfather and two aunts. The family had been already examined for NF 1, but no sign evocative of the disease was found. We then suspected Legius syndrome, a dominant disease characterized by a mild neurofibromatosis 1 phenotype. The diagnosis was confirmed by the finding of a mutation in SPRED1 gene, a feedback regulator of RAS/MAPK signaling. Here, we discuss the differential diagnosis of cafè-au-lait spots and we briefly review the existing literature about Legius syndrome.
Literature
1.
go back to reference Shah KN. The diagnostic and clinical significance of café-au-lait macules. Pediatr Clin North Am. 2010;57(5):1131–53.CrossRefPubMed Shah KN. The diagnostic and clinical significance of café-au-lait macules. Pediatr Clin North Am. 2010;57(5):1131–53.CrossRefPubMed
3.
go back to reference Upadhyaya M, Huson SM, Davies M, Thomas N, Chuzhanova N, Giovannini S, et al. An absence of cutaneous neurofibromas associated with a 3-bp inframe deletion in exon 17 of the NF1 gene (c.2970-2972 delAAT): evidence of a clinically significant NF1 genotype-phenotype correlation. Am J Hum Genet. 2007;80(1):140–51.CrossRefPubMedCentralPubMed Upadhyaya M, Huson SM, Davies M, Thomas N, Chuzhanova N, Giovannini S, et al. An absence of cutaneous neurofibromas associated with a 3-bp inframe deletion in exon 17 of the NF1 gene (c.2970-2972 delAAT): evidence of a clinically significant NF1 genotype-phenotype correlation. Am J Hum Genet. 2007;80(1):140–51.CrossRefPubMedCentralPubMed
4.
go back to reference Pinna V, Lanari V, Daniele P, Consoli F, Agolini E, Margiotti K, et al. p.Arg1809Cys substitution in neurofibromin is associated with a distinctive NF1 phenotype without neurofibromas. Eur J Hum Genet 2014 Nov 5. [Epub ahead of print]. Pinna V, Lanari V, Daniele P, Consoli F, Agolini E, Margiotti K, et al. p.Arg1809Cys substitution in neurofibromin is associated with a distinctive NF1 phenotype without neurofibromas. Eur J Hum Genet 2014 Nov 5. [Epub ahead of print].
5.
go back to reference Ferrari F, Masurel A, Olivier-Faivre L, Vabres P. Juvenile xanthogranuloma and nevus anemicus in the diagnosis of neurofibromatosis type 1. JAMA Dermatol. 2014;150(1):42–6.CrossRefPubMed Ferrari F, Masurel A, Olivier-Faivre L, Vabres P. Juvenile xanthogranuloma and nevus anemicus in the diagnosis of neurofibromatosis type 1. JAMA Dermatol. 2014;150(1):42–6.CrossRefPubMed
6.
go back to reference Brems H, Legius E. Legius syndrome, an Update. Molecular pathology of mutations in SPRED1. Keio J Med. 2013;62(4):107–12.CrossRefPubMed Brems H, Legius E. Legius syndrome, an Update. Molecular pathology of mutations in SPRED1. Keio J Med. 2013;62(4):107–12.CrossRefPubMed
7.
go back to reference Messiaen L, Yao S, Brems H, Callens T, Sathienkijkanchai A, Denayer E, et al. Clinical and mutational spectrum of Neurofibromatosis type 1-like syndrome. JAMA. 2009;302(19):2111–8.CrossRefPubMed Messiaen L, Yao S, Brems H, Callens T, Sathienkijkanchai A, Denayer E, et al. Clinical and mutational spectrum of Neurofibromatosis type 1-like syndrome. JAMA. 2009;302(19):2111–8.CrossRefPubMed
8.
go back to reference Stevenson D, Viskochil D, Mao R, Muram-Zborovski T: Legius Syndrome. 2010;In: Pagon RA, Adam MP, Ardinger HH, Bird TD, Dolan CR, Fong CT, Smith RJH, Stephens K, editors. GeneReviews® Seattle (WA): University of Washington, Seattle; 1993–2014. Stevenson D, Viskochil D, Mao R, Muram-Zborovski T: Legius Syndrome. 2010;In: Pagon RA, Adam MP, Ardinger HH, Bird TD, Dolan CR, Fong CT, Smith RJH, Stephens K, editors. GeneReviews® Seattle (WA): University of Washington, Seattle; 1993–2014.
9.
go back to reference Brems H, Pasmant E, Van Minkelen R, Wimmer K, Upadhyaya M, Legius E, et al. Review and Update of SPRED1 Mutations Causing Legius Syndrome. Hum Mutat. 2012;33(11):1538–46.CrossRefPubMed Brems H, Pasmant E, Van Minkelen R, Wimmer K, Upadhyaya M, Legius E, et al. Review and Update of SPRED1 Mutations Causing Legius Syndrome. Hum Mutat. 2012;33(11):1538–46.CrossRefPubMed
10.
go back to reference Denayer E, Descheemaeker MJ, Stewart DR, Keymolen K, Plasschaert E, Ruppert SL. Observations on Intelligence and Behavior in 15 Patients with Legius Syndrome. Am J Med Genet C: Semin Med Genet. 2011;157(2):123–8.CrossRef Denayer E, Descheemaeker MJ, Stewart DR, Keymolen K, Plasschaert E, Ruppert SL. Observations on Intelligence and Behavior in 15 Patients with Legius Syndrome. Am J Med Genet C: Semin Med Genet. 2011;157(2):123–8.CrossRef
11.
go back to reference Brems H, Chmara M, Sahbatou M, Denayer E, Taniguchi K, Kato R, et al. Germline loss-of-function mutations in SPRED1 cause a neurofibromatosis 1-like phenotype. Nat Genet. 2007;39:1120–6.CrossRefPubMed Brems H, Chmara M, Sahbatou M, Denayer E, Taniguchi K, Kato R, et al. Germline loss-of-function mutations in SPRED1 cause a neurofibromatosis 1-like phenotype. Nat Genet. 2007;39:1120–6.CrossRefPubMed
12.
go back to reference Stowe IB, Mercado EL, Stowe TR, Bell EL, Oses-Prieto JA, Hernández H, et al. A shared molecular mechanism underlies the human rasopathies Legius syndrome and Neurofibromatosis-1. Genes Dev. 2012;26(13):1421–6.CrossRefPubMedCentralPubMed Stowe IB, Mercado EL, Stowe TR, Bell EL, Oses-Prieto JA, Hernández H, et al. A shared molecular mechanism underlies the human rasopathies Legius syndrome and Neurofibromatosis-1. Genes Dev. 2012;26(13):1421–6.CrossRefPubMedCentralPubMed
Metadata
Title
Legius syndrome: case report and review of literature
Authors
Elisa Benelli
Irene Bruno
Chiara Belcaro
Alessandro Ventura
Irene Berti
Publication date
01-12-2015
Publisher
BioMed Central
Published in
Italian Journal of Pediatrics / Issue 1/2015
Electronic ISSN: 1824-7288
DOI
https://doi.org/10.1186/s13052-015-0115-9

Other articles of this Issue 1/2015

Italian Journal of Pediatrics 1/2015 Go to the issue