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Table 7 Number of tumors per subtype, number of tumors per subtype with pathological complete response and their MRI-based response patterns

From: MRI-based response patterns during neoadjuvant chemotherapy can predict pathological (complete) response in patients with breast cancer

Subtype Number of tumors (percentage) Number with pCR (percentage) MRI patterns halfway through NAC in tumors showing pCR (R1 and R2) MRI patterns after NAC in tumors showing pCR (R1 and R2)
ER+/HER2+ 13 (16%) 3 (23%) 0, 1, 2, 4 0, 1, 2
ER+/HER2- 48 (60%) 4 (8%) 0, 1 0, 1
ER-/HER2+ 6 (8%) 3 (50%) 0, 1, 2 0, 1, 2
ER-/HER2- 13 (16%) 6 (46%) 0, 1, 2 0, 3, 4
Total 80 (100%) 16 (20%) 0, 1, 2, 4 0, 1, 2, 3, 4
  1. Abbreviations: MRI magnetic resonance imaging, pCR pathological complete response, NAC neoadjuvant chemotherapy and immunotherapy, ER estrogen receptor, HER2 human epidermal growth factor receptor 2, R1 reader 1, R2 reader 2
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