Abstract:
:Alterations in the gene copy numbers of the proto-oncogenes HER2/neu and c-myc in primary human breast cancer investigated in 73 patients. We detected amplification of HER2/neu in 17 patient samples and amplification of c-myc in 11, while amplification of both was seen in 6 samples. There was no correlation of age, hormone receptor positivity or tumour size with amplification of either proto-oncogene. Amplification of HER2/neu was significantly correlated with the stage of the disease. HER2/neu amplification was observed in 18.5% and 38% of node-negative and node-positive patients, respectively; the association between HER2/neu amplification and advanced stage of the disease was statistically significant (p = 0.05). Since this is a prospective study, the clinical significance of oncogene amplification is not known. The relatively high frequency of HER2/neu amplification points to a functional role in human breast cancer, particularly in the progression of the disease. The method used in our study allows oncogene amplification to be studied in conjunction with hormone receptor determination and thus may be of value in large clinical trials to determine the significance of oncogene abnormalities in breast cancer.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Seshadri R,Matthews C,Dobrovic A,Horsfall DJdoi
10.1002/ijc.2910430218subject
Has Abstractpub_date
1989-02-15 00:00:00pages
270-2issue
2eissn
0020-7136issn
1097-0215journal_volume
43pub_type
杂志文章,评审abstract::We evaluated promoter hypermethylation of a panel of tumor suppressor genes as a means to detect epigenetic alterations in oral squamous cell carcinomas (OSCC) of Indian-origin and compare with North-American head and neck squamous cell carcinomas (HNSCC). Quantitative-methylation-specific PCR was used to investigate ...
journal_title:International journal of cancer
pub_type: 杂志文章
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abstract::Gene expression levels of thymidylate synthase (TS), dihydropyrimidine dehydrogenase (DPD), thymidine phosphorylase (TP) and orotate phosphoribosyl transferase (OPRT) have been shown to be associated with response to 5-fluorouracil-based therapies. Analyzing these gene expression levels in liver metastases is importan...
journal_title:International journal of cancer
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abstract::Epithelial ovarian carcinoma (EOC) is a leading cause of death from gynecologic malignancies, due mainly to the prevalence of undetected metastatic disease. The process of cell invasion during intraperitoneal anchoring of metastatic lesions requires concerted regulation of many processes, including modulation of adhes...
journal_title:International journal of cancer
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abstract::Epigenetic alterations play an important role in carcinogenesis. Recent studies suggested that global histone modifications are predictors of cancer recurrence in various tumor entities. Our study was performed to evaluate histone H3 lysine 4 mono-methyl (H3K4me1), -di-methyl (H3K4me2) and -trimethyl (H3K4me3) pattern...
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abstract::Gliomas are the most common tumors of the central nervous system and have a grave prognosis. Deletion of chromosome 10p15 is one of the most common chromosomal alterations in gliomas. Recently, a candidate tumor suppressor gene, KLF6, which is mapped to chromosome 10p, was found to be frequently mutated in prostate ca...
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abstract::Bone-marrow (BM) hematopoietic precursors are recruited into proliferative activity when colony-stimulating factors (CSF) are sequenced with chemotherapy (CT). Previous studies suggested that further CT can be safely administered only when the increased proliferative activity of these cells has subsided, because most ...
journal_title:International journal of cancer
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更新日期:1995-11-27 00:00:00
abstract::Retinoids are a group of vitamin A analogues that have shown promise as chemopreventive and therapeutic agents in many types of malignancy and have been entered in clinical trials with some successful results. To better understand the mechanism that mediates retinoid action and the anti-proliferative effects, we treat...
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abstract::The effects of galanin on pancreatic carcinogenesis induced by azaserine and on the norepinephrine concentration in the pancreas were investigated in male Wistar rats. Rats were given weekly injections of 10 mg/kg body weight of azaserine for 25 weeks and 8 microg/kg body weight of galanin in depot form every other da...
journal_title:International journal of cancer
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更新日期:1998-01-30 00:00:00
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journal_title:International journal of cancer
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更新日期:2000-10-15 00:00:00
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journal_title:International journal of cancer
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abstract::The association between certain human papillomaviruses (HPV) and cervical intraepithelial neoplasia (CIN) is well documented, but there is uncertainty about the strength of association and the role of co-factors is unclear. This population-based case-control study in Norwegian women 20-44 years of age included 103 cas...
journal_title:International journal of cancer
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journal_title:International journal of cancer
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journal_title:International journal of cancer
pub_type: 杂志文章
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更新日期:1994-09-15 00:00:00
abstract::We screened 29 human esophageal squamous cell carcinoma (ESC) cell lines for mutations of the p53 gene through all coding exons and exon-intron junctions. Mutations were found in 22 cell lines (76%), consisting of 20 single-base substitutions, 2 small deletions and 1 single-base insertion. Out of 20 single-base substi...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(SICI)1097-0215(19960126)65:3<372::AID-IJC
更新日期:1996-01-26 00:00:00
abstract::Human papilloma virus is a causative factor in the etiology of cervical cancer with HPV16 being the most prevalent genotype associated with it. Intratype variations in oncogenic E6/E7 and capsid L1 proteins of HPV 16 besides being of phylogenetic importance, are associated with risk of viral persistence and progressio...
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journal_title:International journal of cancer
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更新日期:2020-10-26 00:00:00
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journal_title:International journal of cancer
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journal_title:International journal of cancer
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更新日期:1997-06-11 00:00:00
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journal_title:International journal of cancer
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abstract::Several mouse models studying the MLL fusion-induced leukemic transformation showed that a myeloproliferation stage precedes leukemia or occurred as the only phenotype of hematological disorder in mice. We established 6 MLL/AF10(OM-LZ)-immortalized cell lines by retrovirally transducing the fusion gene into bone marro...
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