| Title |
Single-day HER2neu amplification assessment using chip-based digital PCR in formalin-fixed paraffin-embedded breast carcinoma tissue
|
|---|---|
| Published in |
Breast cancer targets and therapy, July 2018
|
| DOI | 10.2147/bctt.s161264 |
| Pubmed ID | |
| Authors |
Parth S Shah, Shiva Murarka, Anupam Joshi, Bhavna Mehta, Vipal Parmar, Nidhi Shah, Khushbu Patel, Jacob Sands |
| Abstract |
Human epidermal growth factor receptor 2 (HER2) amplification is present in almost 15%-20% of breast cancer tumors, making it an important parameter for testing. The present study was designed to evaluate a chip-based digital PCR (dPCR) system for assessing HER2 amplification from formalin-fixed paraffin-embedded breast carcinoma tissue and to compare this system with immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH). A total of 84 breast carcinoma tissue samples were analyzed by IHC, FISH, and chip-based dPCR in a blinded manner. All nine IHC-positive and 35 IHC-negative samples had equivalent results with dPCR, taking an amplification ratio threshold of 1.8 as a positive result. Of the 40 IHC equivocal samples, 10 were assessed as positive, 27 as negative, and three as equivocal by dPCR. These results demonstrate that chip-based dPCR is suitable for HER2 amplification detection in formalin-fixed paraffin-embedded samples in a clinical setting, providing the advantages of superior turnaround time, cost-effectiveness, and increased precision with absolute quantification compared with conventional tests such as FISH and IHC. This methodology was especially beneficial in tissue samples with low DNA concentration. |
X Demographics
The data shown below were collected from the profiles of 3 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| India | 1 | 33% |
| United States | 1 | 33% |
| United Kingdom | 1 | 33% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 3 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 19 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 19 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Unspecified | 3 | 16% |
| Librarian | 2 | 11% |
| Student > Doctoral Student | 2 | 11% |
| Student > Postgraduate | 2 | 11% |
| Lecturer > Senior Lecturer | 1 | 5% |
| Other | 4 | 21% |
| Unknown | 5 | 26% |
| Readers by discipline | Count | As % |
|---|---|---|
| Unspecified | 3 | 16% |
| Biochemistry, Genetics and Molecular Biology | 3 | 16% |
| Medicine and Dentistry | 3 | 16% |
| Engineering | 2 | 11% |
| Social Sciences | 1 | 5% |
| Other | 1 | 5% |
| Unknown | 6 | 32% |
Attention Score in Context
This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 28 October 2018.
All research outputs
#15,175,718
of 25,385,509 outputs
Outputs from Breast cancer targets and therapy
#140
of 324 outputs
Outputs of similar age
#182,001
of 341,606 outputs
Outputs of similar age from Breast cancer targets and therapy
#2
of 4 outputs
Altmetric has tracked 25,385,509 research outputs across all sources so far. This one is in the 38th percentile – i.e., 38% of other outputs scored the same or lower than it.
So far Altmetric has tracked 324 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 6.0. This one has gotten more attention than average, scoring higher than 56% of its peers.
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