From: Impact of breast cancer subtypes on 3-year survival among adolescent and young adult women
 | All-cause deaths | Breast cancer-specific deaths | ||
---|---|---|---|---|
Number of deaths | HR (95% CI)* | Number of deaths | HR (95% CI)* | |
Low tumor grade (I/II) | Â | Â | Â | Â |
 Subtype†|  |  |  |  |
  HR+/HER2- | 44 | 1.00 (reference) | 27 | 1.00 (reference) |
  HR+/HER2+ | 19 | 1.57 (0.87-2.81) | 16 | 2.23 (1.12-4.44) |
  HR-/HER2+ | 9 | 1.52 (0.61-3.76) | 7 | 2.37 (0.85-6.61) |
  Triple negative | 25 | 10.64 (5.66-20.00) | 21 | 13.87 (6.49-29.64) |
  Unclassified | 16 | 1.34 (0.70-2.57) | 13 | 2.05 (0.95-4.44) |
High tumor grade (III) | Â | Â | Â | Â |
 Subtype†|  |  |  |  |
  HR+/HER2- | 73 | 1.00 (reference) | 67 | 1.00 (reference) |
  HR+/HER2+ | 23 | 0.49 (0.29-0.81) | 21 | 0.48 (0.28-0.81) |
  HR-/HER2+ | 59 | 1.40 (0.95-2.06) | 55 | 1.40 (0.93-2.10) |
  Triple negative | 162 | 2.24 (1.61-3.13) | 140 | 2.14 (1.51-3.04) |
  Unclassified | 57 | 1.47 (0.98-2.21) | 49 | 1.32 (0.85-2.05) |