| Autor: |
Morey, Adrienne L., Brown, Belinda, Farshid, Gelareh, Fox, Stephen B., Francis, Glenn D., McCue, Glenda, von Neumann-Cosel, Vita, Bilous, Michael |
| Zdroj: |
Pathology; October 2016, Vol. 48 Issue: 6 p535-542, 8p |
| Abstrakt: |
Appropriate and accurate determination of HER2status in women with breast cancer is critical for stratifying anti-HER2therapies, and for access to subsidised treatment in the Australian setting. We conducted a regulated, nationwide program providing HER2 in situhybridisation (ISH) testing for patients with newly diagnosed breast cancer. Cases with equivocal or non-diagnostic ISH test results at the local laboratory were sent to a high volume central testing laboratory for analysis using fluorescence ISH (FISH). We tested 78,408 early breast cancers and 3469 metastatic cancers using ISH. Of these, 12,405 early breast cancers (15.8%) and 798 metastatic cancers (23.0%) were HER2positive. During the testing period, the proportion of core biopsy samples increased, the number of repeat tests remained stable and testing turnaround time declined. Discordant 3+ IHC, ISH negative results dropped from 20% to 13% in early breast cancers and from 35% to 8% among metastatic breast cancers. Following central laboratory FISH testing only 87 samples remained non-diagnostic (1.9% of FISH-tested samples, 0.1% of the whole cohort), most being decalcified specimens. This is a successful story of a cohesive service determining HER2status in women with breast cancer in a ‘real-world’ setting. |
| Databáze: |
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