ERBB4 and inflammatory breast carcinoma: In the HR+/HER2– subgroup (Additional file 3: Figure S1c), genes such as BRCA2, NOTCH2, ERBB4, FGFR3, and LAMA2 (all p value less than 0.01), and TP53, NOTCH4, TP53BP1, MYH9, and EGFR (all p value less than 0.05) were more frequently mutated in IBC.