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Relationship between HER-2 expression intensity and prognosis.
| Recurrence/metastasis | HER-2 ultra-low, n (%) | HER-2 low, n (%) | P |
|---|---|---|---|
| Total | 0.082 | ||
| Yes | 29 (11.6) | 60 (8.0) | |
| No | 22 (88.4) | 688 (92.0) | |
| TNBC subgroup | 0.195 | ||
| Yes | 11 (16.4) | 7 (9.2) | |
| No | 56 (83.6) | 69 (90.8) | |
| HR-positive subgroup | 0.385 | ||
| Yes | 18 (9.9) | 53 (7.9) | |
| No | 164 (90.1) | 619 (92.1) |
