IARS1 and neoplasm: Both PDCD4 and TRAF6 were expressed in the astroglial component of the tumor (Additional file 2: Figure S2A, B), and a negative correlation was observed between the PDCD4 IRS and the miR21 (r = −0.817, p = <0.001), as well as between the TRAF6 IRS and the miR146a (r = −0.498, p = < 0.05).