Table 3. Clinico-pathological association of SOX9 immunostaining in the ERG positive subset.

Parameter	Evaluable (n)	SOX9 (%)				P value
		negative	weak	moderate	strong
Total	3116	18	15	49	18
Tumor stage						<0.0001
pT2	1898	15	12	52	21
pT3a	839	20	19	47	14
pT3b	352	30	21	36	14
pT4	15	33	33	33	0
Gleason grade						<0.0001
≤3+3	695	21	10	50	19
3+4	1879	16	16	50	19
4+3	433	23	22	42	14
≥4+4	93	30	19	40	11
Lymph node metastasis						<0.0001
N0	1757	18	17	48	18
N+	156	31	19	42	8
Preoperative PSA level (ng/ml)						<0.0001
<4	428	16	13	50	22
4–10	1924	16	14	52	18
>10–20	546	21	19	41	19
>20	181	32	21	39	8
Surgical margin						0.001
negative	2466	17	15	50	19
positive	593	24	16	45	16