Background: Amplification of HER2 is seen in 20-30% of breast cancer cases. Measurement of HER2 gene amplification appears to be of vital importance in planning the treatment schedule for patients with breast carcinoma. The aim of our study was to evaluate HER2 amplification status in malignant and benign breast tumors by differential PCR (dPCR). Materials and Methods: The genomic DNA was ex...

background: amplification of her2 is seen in 20-30% of breast cancer cases. measurement of her2 gene amplification appears to be of vital importance in planning the treatment schedule for patients with breast carcinoma. the aim of our study was to evaluate her2 amplification status in malignant and benign breast tumors by differential pcr (dpcr). materials and methods: the genomic dna was extra...

Background & Objective: The her2 amplification plays an important role in breast cancer management. Therefore, there is a need for using supplementary molecular methods in IHC equivocal cases. Present study has been conducted to determine the effects of clinicopathological variables on her2 gene amplification by chromogenic in situ hybridization (CISH) in IHC ...

Background: The analysis of the gene copy number alterations in tumor samples are increasingly used for diagnostic and prognostic purposes in patients with gastric cancer (GC). However, these procedures are not always applicable due to their invasive nature. In this study, we have analyzed the copy number alterations of five genes (HER2, MDM2, c-MYC, c-MET, and TP53) with a fixed relevance for ...

Background: Gastric cancer (GC) is considered as one of the most common types of cancer worldwide with poor prognosis and generally limited treatment options. Recent studies have indicated that HER2, MDM2, MYC, MET, and TP53 play an important role in the development of gastric cancer. Therefore, the aim of this study was to evaluate the incidence of amplification/deletion of these genes in pati...

The aim of the present study was to identify potential human epidermal growth factor receptor 2 (HER2) amplification, according to American Society of Clinical Oncology and the College of American Pathologists (ASCO/CAP) 2013 HER2 testing guidelines, in patients previously determined not to possess HER2 amplification, in accordance with previous 2007 guidelines. Potential discrepancies may aris...

BACKGROUND Her2 expression and amplification occurs in a significant subset of gastro-esophageal carcinomas. Her2 is a client protein of molecular chaperones, e.g. heat shock protein (HSP) 90, rendering targeted therapies against Her2/HSP90 an interesting approach. This study aimed to investigate the role and relationship of Her2 and HSP90 in gastric and gastro-esophageal adenocarcinomas. MAT...

An accurate investigation of the HER2 proto-oncogene is extremely important for the therapy and prognostication of breast cancer. Currently, immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH) are standard methods for this purpose. The aim of this study was to detect the expression and amplification of HER2 in paraffin-embedded samples of breast cancer tissue and to investi...

conclusions this study on a limited number of patients treated with adjutant anthracyclins-based regimens, revealed that her2/neu is not a unique strong predictor for outcome, thus according to combination of her2/neu status and other clinical factors, it is necessary to distinguish patients at high risk of recurrence. results her2/neu amplification was identified in 19 (38%) of 50 patients. no...