PPP1R13L and chordoma: iASPP expression in chordoma tissues was elevated (Figure 1A) when compared to that in distant normal tissues (Figure 1B) and nucleus pulposus (NP) (Figure 1C) with a statistically significant difference (p = 0.000, iASPP expression in chordoma vs. distant normal tissues; p = 0.009, iASPP expression in chordoma vs. NP) (Table 1).