Table 1. Expression of iASPP in chordoma, distant normal tissues and nucleus pulposus samples.

Tissue sample	N	iASPP expression		p value
		High (%)	Low (%)
Chordoma tissues	31	21 (67.7 %)	10 (32.3 %)
Distant normal tissue	18	2 (11.1 %)	16 (88.9 %)	0.000*
Nucleus pulposus	15	4 (26.7 %)	11 (73.3 %)	0.009*