Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
14
pubmed:dateCreated
2003-7-9
pubmed:abstractText
Characteristic patterns of gene expression measured by DNA microarrays have been used to classify tumors into clinically relevant subgroups. In this study, we have refined the previously defined subtypes of breast tumors that could be distinguished by their distinct patterns of gene expression. A total of 115 malignant breast tumors were analyzed by hierarchical clustering based on patterns of expression of 534 "intrinsic" genes and shown to subdivide into one basal-like, one ERBB2-overexpressing, two luminal-like, and one normal breast tissue-like subgroup. The genes used for classification were selected based on their similar expression levels between pairs of consecutive samples taken from the same tumor separated by 15 weeks of neoadjuvant treatment. Similar cluster analyses of two published, independent data sets representing different patient cohorts from different laboratories, uncovered some of the same breast cancer subtypes. In the one data set that included information on time to development of distant metastasis, subtypes were associated with significant differences in this clinical feature. By including a group of tumors from BRCA1 carriers in the analysis, we found that this genotype predisposes to the basal tumor subtype. Our results strongly support the idea that many of these breast tumor subtypes represent biologically distinct disease entities.
pubmed:grant
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-10213514, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-10676951, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-10963602, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-11207349, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-11289122, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-11507038, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-11553815, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-11562467, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-11707590, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-11786909, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-11807556, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-11823860, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-11888924, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-11965276, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-12011421, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-12036904, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-12058060, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-12075054, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-12118244, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-12208864, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-12383682, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-12384785, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-12466114, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-12490681, http://linkedlifedata.com/resource/pubmed/commentcorrection/12829800-12519986
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0027-8424
pubmed:author
pubmed:issnType
Print
pubmed:day
8
pubmed:volume
100
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
8418-23
pubmed:dateRevised
2009-11-18
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Repeated observation of breast tumor subtypes in independent gene expression data sets.
pubmed:affiliation
Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't