Human Gene Set: ODONNELL_METASTASIS_UP


Standard name ODONNELL_METASTASIS_UP
Systematic name M265
Brief description Up-regulated genes in the signature set for lymph node metastasis in head and neck squamous cell carcinoma (HNSCC).
Full description or abstract Metastasis via the lymphatics is a major risk factor in squamous cell carcinoma of the oral cavity (OSCC). We sought to determine whether the presence of metastasis in the regional lymph node could be predicted by a gene expression signature of the primary tumor. A total of 18 OSCCs were characterized for gene expression by hybridizing RNA to Affymetrix U133A gene chips. Genes with differential expression were identified using a permutation technique and verified by quantitative RT-PCR and immunohistochemistry. A predictive rule was built using a support vector machine, and the accuracy of the rule was evaluated using crossvalidation on the original data set and prediction of an independent set of four patients. Metastatic primary tumors could be differentiated from nonmetastatic primary tumors by a signature gene set of 116 genes. This signature gene set correctly predicted the four independent patients as well as associating five lymph node metastases from the original patient set with the metastatic primary tumor group. We concluded that lymph node metastasis could be predicted by gene expression profiles of primary oral cavity squamous cell carcinomas. The presence of a gene expression signature for lymph node metastasis indicates that clinical testing to assess risk for lymph node metastasis should be possible.
Collection C2: Curated
      CGP: Chemical and Genetic Perturbations
Source publication Pubmed 15558013   Authors: O'Donnell RK,Kupferman M,Wei SJ,Singhal S,Weber R,O'Malley B,Cheng Y,Putt M,Feldman M,Ziober B,Muschel RJ
Exact source Table 1S
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Source species Homo sapiens
Contributed by Leona Saunders (MSigDB Team)
Source platform or
identifier namespace		 AFFY_HG_U133
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Version history 3.0: First introduced

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