Table 1b. Association of ERG oncoprotein status with tumor differentiation and Gleason pattern of individual tumors (N=261).

Tumor grade	ERG status		P-value
	Negative (N=144)	Positive (N=117)
Tumor differentiation
Gleason pattern 3 (Well differentiated)	100 (62.5%)	60 (37.5%)	0.0027
Gleason pattern 4/5 (moderate/poorly differentiated)	44 (43.6%)	57 (56.4%)
Tumor Gleason sum			0.0094
6	100 (62.5%)	60 (37.5%)
7	26 (41.3%)	37 (58.7%)
8–10	18 (47.4%)	20 (52.6%)