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dc.contributor.authorMorey, Adrienne L
dc.contributor.authorBrown, Belinda
dc.contributor.authorFarshid, Gelareh
dc.contributor.authorFox, Stephen B
dc.contributor.authorFrancis, Glenn D
dc.contributor.authorMcCue, Glenda
dc.contributor.authorvon Neumann-Cosel, Vita
dc.contributor.authorBilous, Michael
dc.description.abstractAppropriate and accurate determination of HER2 status in women with breast cancer is critical for stratifying anti-HER2 therapies, and for access to subsidised treatment in the Australian setting. We conducted a regulated, nationwide program providing HER2 in situ hybridisation (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 HER2 positive. 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 HER2 status in women with breast cancer in a ‘real-world’ setting.
dc.publisherAmerican Society for Clinical Pathology
dc.relation.ispartofjournalAnatomical Pathology
dc.subject.fieldofresearchClinical sciences
dc.subject.fieldofresearchClinical sciences not elsewhere classified
dc.titleDetermining HER2 (ERBB2) amplification status in women with breast cancer: final results from the Australian in situ hybridisation program
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorFrancis, Glenn D.

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