Incidence of Polysomy 17 by HER2 Status (FISH and RT-PCR)

HER2Central FISH positiveCentral FISH equivocalCentral FISH negativeTotal RT-PCR
RT-PCR positive19/55 (35%)1/1 (100%)4/11 (36%)24/67 (36%)
RT-PCR equivocal0/4 (0%)1/5 (20%)13/79 (17%)14/88 (16%)
RT-PCR negative1/1 (100%)0/4 (0%)32/408 (8%)33/413 (8%)
Total FISH20/60 (33%)2/10 (20%)49/498 (10%)71/568 (13%)
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