Linked Life Data

15154013

Source:http://linkedlifedata.com/resource/pubmed/id/15154013

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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11
pubmed:dateCreated
2004-10-20
pubmed:abstractText
Gastric cancer is one of the most common cancers. Molecular events in the carcinogenesis of gastric cancer remain, however, largely undefined. We investigated changes in DNA copy number in 102 gastric cancers by CGH. We found changes in DNA copy number in all cases, with frequent (> or =30% of patients) gains at 20q, 8q, 20p, 7q, 17q, 5p, and 13q. Frequent (> or =20%) losses were found at 19p, 18q, 5q, 21q, 4p, 4q, 15q, and 17p. The mean number of total alterations was significantly lower in grade 3 and scirrhous-type carcinomas (10.81 in grade 3 vs 13.98 in grade 1 and grade 2, 9.31 in scirrhous-type vs 13.18 in medullary- and intermediate-type). The mean number of losses and total alterations were higher in tumors at pT2, pT3 and pT4 (4.68 and 12.77 in pT2, pT3, and pT4 vs 2.55 and 9.22 in pT1). The mean number of losses was higher in carcinomas with lymph node metastasis (4.83). The mean number of gains and total alterations were higher in carcinomas with venous invasion (8.44 and 13.28). Several chromosomal alterations were linked in a statistically significant manner to specific clinicopathological parameters. Gain of 17q, 20p, and 20q and loss of 4p were associated with the pattern of the cancer-stroma relationship; loss of 18q was associated with pT category; gain of 5p was associated with pN category; loss of 4q and loss of 21q were associated with lymphatic invasion; gain of 7p and loss of 4q and 18q were associated with venous invasion; and loss of 18q was associated with pathological stage. These data suggest that gain of 20q and loss of 18q might play an important role in the development and progression of gastric cancer. Moreover, some genes on 20q and 18q might be target genes of gastric cancer.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0893-3952
pubmed:author
pubmed:issnType
Print
pubmed:volume
17
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1328-37
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Genetic alterations in 102 primary gastric cancers by comparative genomic hybridization: gain of 20q and loss of 18q are associated with tumor progression.
pubmed:affiliation
Department of Oncological Science (Pathology), Faculty of Medicine, Oita University, Oita 879-5593 , Japan. kimuray@med.oita-u.ac.jp
pubmed:publicationType
Journal Article