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| Variable | Endpoint RT-PCR | Frequency |
|---|---|---|
| ER | Positive | 29 (70.7) |
| Negative | 12 (29.3) | |
| PR | Positive | 5 (12.2) |
| Negative | 36 (87.8) | |
| HER2 | Positive | 9 (22.0) |
| Negative | 32 (78.0) |
Values are presented as number (%). RT-PCR, reverse transcription PCR; ER, estrogen receptor; PR, progesterone receptor; HER2, human epidermal growth factor receptor 2.
