Fig. 2: Kaplan–Meier curves for EFS by RCB class in ILC vs. Non-ILC Across Receptor Subtypes.

By the log-rank test, there is a significant association between RCB class and EFS for all ILC (A) and non-ILC (B) cases, HR+HER2- ILC (C) and non-ILC (D) cases, and TN or HER2+ILC (E) and non-ILC (F) cases; p < 0.001 for all. Of note, for HR+HER2- groups, RCB 0 and RCB I cases were combined due to only 4 ILC cases having RCB 0 disease. Number at risk shown. (ILC invasive lobular carcinoma, HR hormone receptor, HER2 human epidermal growth factor-2, TN triple negative).