EGFR and breast cancer: Another study combined EGFR‐CAR NK‐92 cells with oncolytic herpes simplex virus (oHSV) increased cytolytic effect and IFN‐γ production when co‐cultured with breast cancer cell lines MDA‐MB‐231, MDA‐MB‐468, and MCF‐7 in vitro compared to monotherapies.