alexa Repository of <em>SMAD4</em> Mutations: Reference for G
ISSN: 2153-0602

Journal of Data Mining in Genomics & Proteomics
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Research Article

Repository of SMAD4 Mutations: Reference for Genotype/ Phenotype Correlation

Whitney L. Wooderchak1, Zacary Spencer1, David K. Crockett1, Jamie McDonald1,2 and Pınar Bayrak-Toydemir1,3*

1ARUP Institute for Clinical and Experimental Pathology, Salt Lake City, Utah

2Department of Radiology, University of Utah, Salt Lake City, Utah

3Department of Pathology, University of Utah, Salt Lake City, Utah

*Corresponding Author:
Dr. Pınar Bayrak-Toydemir, MD, Ph.D
Department of Pathology University of Utah
ARUP Laboratories, 500 Chipeta Way
Salt Lake City, UT 84108
Tel : 801-583-2787 x13171
Fax : 801-584-5207
E-mail: [email protected]

Received Date: July 28, 2010; Accepted Date: September 02, 2010; Published Date: September 02, 2010

Citation: Wooderchak WL, Spencer Z, Crockett DK, McDonald J, Bayrak-Toydemir P (2010) Repository of SMAD4 Mutations: Reference for Genotype/Phenotype Correlation. J Data Mining in Genom Proteomics 1:101. doi: 10.4172/2153-0602.1000101

Copyright: © 2010 Wooderchak WL, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



Mutations in the SMAD4 gene have been found in patients with Juvenile Polyposis Syndrome (JPS), patients with combined Juvenile Polyposis/ Hereditary Hemorrhagic Telangiectasia (JP/HHT) or patients with HHT, but without reported symptoms of juvenile polyposis. We have developed a publicly available, searchable SMAD4 database to aid in genotype/phenotype correlations, using the Human Genome Variation Society recommendations for mutation nomenclature and database content. The purpose of this database is to serve as a repository for all known SMAD4 mutations, variants of uncertain signi fi cance, or polymorphisms including sequence based changes and large deletion/ duplications that have been linked to JPS, JP/HHT, or HHT as well as any clinical information or signi fi cant literature related to the disorder. Each database entry lists the SMAD4 mutation’s location, mutation type, pathogenicity classi fi cation, disease-speci fi c phenotype, literature references, and comments (which may include clinical features, complex genotypes, and links to additional literature references). The majority of the SMAD4 database entries consist of missense sequence changes and small deletions with 67 JPS mutations, 23 JP/HHT mutations, and one HHT-causing mutation. Novel SMAD4 variants and updated phenotypic information for any existing database entry can be submitted electronically on the database website ( In conclusion, with links to detailed clinical descriptions and all published references, this database hopes to serve as a valuable reference for the clinical management of patients with JPS, JP/HHT and HHT.

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