Document Detail


The heterogeneous nature of germline mutations in NF1 patients with malignant peripheral serve sheath tumours (MPNSTs).
MedLine Citation:
PMID:  16786508     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Malignant peripheral nerve sheath tumours (MPNSTs) are a major cause of mortality in patients with neurofibromatosis 1 (NF1). We have analysed lymphocyte DNA samples from 30 NF1 patients with MPNSTs to determine their underlying constitutional NF1 gene mutations. Mutations were detected in 27/30 (90%) of these patients. NF1 mutations identified included nonsense, missense, frameshift, splice site mutation and single or multi-exonic deletions and with no obvious clustering of the mutations across the gene. Fourteen of the mutations represent novel gene changes. There did not appear to be any relationship between the mutation type and the level of clinical severity observed. Of the 20 patients with high grade MPNSTs, seven patients had small (<20 bp) and multi-exonic deletions and three had small insertions (<20 bp). Several studies have suggested that NF1 patients with a constitutional 1.5 Mb deletion of the NF1 gene have an increased risk of developing malignant peripheral nerve sheath tumours (MPNSTs). None of our patients had a 1.5 Mb deletion. Larger prospective studies are needed to ascertain whether there is a different spectrum of NF1 mutations in NF1 patients with high grade compared to low grade MPNSTs and of patients with the 1.5Mb deletion, in order to determine the true frequency of MPNST in this sub-group of NF1 patients.
Authors:
Meena Upadhyaya; Gill Spurlock; Elisa Majounie; Sian Griffiths; Natalie Forrester; Mike Baser; Susan M Huson; D Gareth Evans; Rosalie Ferner
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Human mutation     Volume:  27     ISSN:  1098-1004     ISO Abbreviation:  Hum. Mutat.     Publication Date:  2006 Jul 
Date Detail:
Created Date:  2006-06-26     Completed Date:  2006-08-07     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9215429     Medline TA:  Hum Mutat     Country:  United States    
Other Details:
Languages:  eng     Pagination:  716     Citation Subset:  IM    
Copyright Information:
Copyright 2006 Wiley-Liss, Inc.
Affiliation:
Institute of Medical Genetics, Cardiff University, Cardiff, Wales, United Kingdom.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
DNA Mutational Analysis
Genes, Neurofibromatosis 1*
Genetic Heterogeneity*
Germ-Line Mutation*
Humans
Middle Aged
Nerve Sheath Neoplasms / genetics*
Neurofibromatosis 1 / genetics*,  mortality,  pathology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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