SLC25A28 and central nervous system cancer: While we did not find a correlation between the tumor expression of MFRN2 and patient survival, it will also be important to assess the role of MFRN2 in the development of GBM radioresistance, considering that MFRN2 has been implicated in the ROS-mediated cytotoxicity induced in glioma cells by arsenic trioxide [55].