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Accession: PRJNA98557 ID: 98557

Homo sapiens (human)

The prognostic role of a gene signature from tumorigenic breast-cancer cells.

See Genome Information for Homo sapiens
Breast cancers contain a minority population of cancer cells characterized by CD44 expression but low or undetectable levels of CD24 (CD44+CD24-/low) that have higher tumorigenic capacity than other subtypes of cancer cells. METHODS: We compared the gene-expression profile of CD44+CD24-/low tumorigenic breast-cancer cells with that of normal breast epithelium. Differentially expressed genes were used to generate a 186-gene invasiveness gene signature (IGS), which was evaluated for its association with overall survival and metastasis-free survival in patients with breast cancer or other types of cancer. RESULTS: There was a significant association between the IGS and both overall and metastasis-free survival (P<0.001, for both) in patients with breast cancer, which was independent of established clinical and pathological variables. When combined with the prognostic criteria of the National Institutes of Health, the IGS was used to stratify patients with high-risk early breast cancer into prognostic categories (good or poor); among patients with a good prognosis, the 10-year rate of metastasis-free survival was 81%, and among those with a poor prognosis, it was 57%. The IGS was also associated with the prognosis in medulloblastoma (P=0.004), lung cancer (P=0.03), and prostate cancer (P=0.01). The prognostic power of the IGS was increased when combined with the wound-response (WR) signature. CONCLUSIONS: The IGS is strongly associated with metastasis-free survival and overall survival for four different types of tumors. This genetic signature of tumorigenic breast-cancer cells was even more strongly associated with clinical outcomes when combined with the WR signature in breast cancer. Keywords: cell type comparison Overall design: Expression profling were performed on 6 tumorigenic, 3 non tumorigenic samples of breast tumors and 3 normal breast samples on two different platforms GPL96 and GPL97. A gene signature was derived by comparing the gene expressions of 6 tumorigenic samples with 3 normal breast samples
AccessionPRJNA98557; GEO: GSE6883
Data TypeTranscriptome or Gene expression
ScopeMultiisolate
OrganismHomo sapiens[Taxonomy ID: 9606]
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo; Homo sapiens
PublicationsLiu R et al., "The prognostic role of a gene signature from tumorigenic breast-cancer cells.", N Engl J Med, 2007 Jan 18;356(3):217-26
SubmissionRegistration date: 10-Mar-2007
OncoMed Pharmaceuticals Inc
RelevanceMedical
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PubMed1
Other datasets
GEO DataSets3
GEO Data Details
ParameterValue
Data volume, Spots537504
Data volume, Processed Mbytes13
Data volume, Supplementary Mbytes135

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    The prognostic role of a gene signature from tumorigenic breast-cancer cells.
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