Table 4. Clinical characteristics of the chordoma patients.

Sample number	Age/Gender	Location	Origina	Stage	Margin	Radiation	Local recurrent	Metastasis	Follow up (months)	Status
1	70/M	Sacrum	Recurrent	1B	Intraleasional margin	No	Yes	No	165	DOD
2	71/M	Sacrum	Primary	1B	Wide margin	No	No	No	69	NED
3	77/M	Sacrum	Primary	1B	Wide margin	Yes	No	No	109	DOO
4	46/M	Sacrum	Primary	1B	Wide margin	Yes	Yes	No	127	AWD
5	64/M	Sacrum	Primary	1B	Wide margin	Yes	No	No	90	NED
6	55/M	Sacrum	Primary	2A	Wide margin	Yes	Yes	No	201	AWD
7	62/M	Sacrum	Primary	1B	Wide margin	Yes	No	No	143	NED
8	83/M	Sacrum	Recurrent	1B	Intraleasional margin	Yes	Yes	No	45	DOO
9	71/F	L4	Primary	1B	Attempted wide margin	Yes	No	No	143	NED
10	51/F	Sacrum	Primary	1B	Wide margin	No	Yes	No	87	DOD
11	37/M	Sacrum	Recurrent	2B	Wide margin	No	No	No	128	AWD
12	74/M	Sacrum	Recurrent	1B	Intraleasional margin	Yes	Yes	No	69	DOD
13	58/M	Sacrum	Recurrent	1B	Intraleasional margin	No	Yes	No	37	DOD
14	47/M	Sacrum	Primary	2B	Attempted wide margin	Yes	No	No	123	NED
15	82/M	Sacrum	Recurrent	3	Attempted wide margin	Yes	Yes	Yes	36	DOD
16	63/M	Sacrum	Primary	2A	Wide margin	No	No	No	63	NED
17	63/M	Sacrum	Primary	2A	Wide margin	No	No	No	63	NED
18	60/F	Sacrum	Primary	1A	Wide margin	Yes	No	No	61	NED
19	82/M	Sacrum	Recurrent	3	Attempted wide margin	Yes	Yes	Yes	36	DOD
20	52/F	L3	Recurrent	1B	Wide margin	Yes	No	No	4	DOO
21	52/F	Sacrum	Recurrent	2B	Attempted wide margin	Yes	Yes	No	46	DOD
22	50/M	T12-L1	Recurrent	3	Attempted wide margin	Yes	Yes	Yes	77	DOD
23	74/M	Sacrum	Recurrent	2B	Intraleasional margin	Yes	No	Yes	36	DOD

Abbreviations: L, lumber spine; T, thoracic spine; AWD, alive with disease; NED, no evidence of disease; DOD, dead of disease; DOO, dead of others.

^aOrigin was defined as patient who was previously treated (recurrent origin) or not (primary origin).