While generating ROS, this approach promoted the intratumoral infiltration of cytotoxic T lymphocytes, thereby enhancing the immunotherapy of tumor cells.[75] Marino et al.[76] functionalized BaTiO3 nanoparticles with anti‐transferrin receptor antibodies (anti‐TfR Ab), creating antibody‐functionalized BaTiO3 nanoparticles (AbBTNPs) capable of penetrating the blood‐brain barrier and targeting glioblastoma cells simultaneously (Figure 5i). The gene discussed is TFRC; the disease is glioblastoma.