SLC25A4 and glioblastoma: ANTs belong to mitochondrial proteins, and just like the other mitochondrial proteins, they have a poor correlation between transcript and protein levels in glioblastoma (Spearman correlation: ANT1 0.5; ANT2 0.04; ANT3 0.01; note ANT4 was not detected at protein level; Fig. 2C and Fig. S2B).