Table 8 Discordance of hormonal receptor and HER2 status between primary and metastatic samples (only in patients with rebiopsies and with diagnoses confirmed by pathologist; n = 80)
From: Factors that predict recurrence later than 5 years after initial treatment in operable breast cancer
Change of HR and/or HER2 status | |||
|---|---|---|---|
Early recurrence (n = 40) | Late recurrence (n = 40) | ||
No change ER status | 36 | 36 | |
ER change | Pos → neg | 2 | 2 |
Neg → pos | 2 | 2 | |
No change PR status | 35 | 37 | |
PR change | Pos → neg | 2 | 2 |
Neg → pos | 3 | 1 | |
No change HER2 status | 35 | 38 | |
HER2 change | Pos → neg | 1 | 0 |
Neg → pos | 4 | 2 | |