ERBB2 and inflammatory breast carcinoma: In IBC patients, a Cox proportional hazard model indicated significant associations between MYC level and RFS (hazard ratio, 1.93; 95% confidence interval, 1.09 to 3.43, P = 0.003) and between MYC level and DDFS (hazard ratio, 2.00; 95% confidence interval, 1.10 to 3.64, P = 0.028), but not between MYC level and OS (hazard ratio, 1.45; 95% confidence interval, 0.65 to 3.24, P = 0.38) in HR+/HER2– IBC (Supplementary Table 4).