Table 1. Correlation of TMEM119 expression with clinicopathological features of osteosarcoma.

Variable	All cases	TMEM119 protein expression		P-value
		Low (n=41)	High (n=59)
Age at surgery
<14	32	14	18	0.8278
⩾14	68	27	41
Gender
Male	57	22	35	0.6819
Female	43	19	24
Anatomic location
Femur	50	23	27	0.2313
Tibia	28	13	15
Humerus	10	3	7
Others	12	2	10
Tumor size
⩾5 cm	55	17	38	0.0265*
<5 cm	45	24	21
Clinical stage
IIA	42	25	17	0.0019**
IIB/III	58	16	42
Distant metastasis
Absent	58	30	28	0.0135*
Present	42	11	31

*P<0.05, **P<0.01.