MAP4K3 and breast cancer: Mining of the TCGA Fusion gene Data Portal (http://54.84.12.177/PanCanFusV2/) 66 and other published fusion datasets in breast cancer 43, 64, 65 identified two additional in‐frame fusion genes involving RAP3GAP1 in breast cancer (RAB3GAP1–ACMSD and RAB3GAP1–MAP4K3).