Table 3

HER2 status of primary and matched recurrent lesion by immunohistochemistry*
PRIMARY RECURRENCE
HER2 negative HER2 inconclusive HER2 positive
HER2 negative 50 8 2
HER2 inconclusive 4 5 2
HER2 positive 2 3 22
Total 56 16 26

*Eighteen patients, where immunohistochemistry was not performed by the local laboratory on primary or recurrence, were excluded.

Chan et al.

Chan et al. BMC Cancer 2012 12:555   doi:10.1186/1471-2407-12-555

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