RAB11FIP1 and breast cancer: ARID1A down‐regulation significantly up‐regulated RAB11 family interacting protein 1 (RAB11FIP1) mRNA in breast cancer cells.33 RAB11FIP1 is known as a Rab‐coupling protein that assists breast cancer progression.34 In the present study, ARID1A expression was up‐regulated in TNBCs compared to other subtypes derived from patients with breast cancer (Figure 3A‐D).