Table 3.

Summary of zebrafish OPEN ZFN target sites, classified by ZiFOpT

Confidence Score (Active Sites)	False Positive Rate1 (FPR)	# of zebrafish transcripts targeted2		Average # of ZFN target sites2 in transcripts containing nuclease sites	# of potential target sites2 eliminated by using ZiFOpT
**	**	25,174	(86%)	4.5	0	(0%)
> 4	24%	15,565	(53%)	2.3	78,934	(69%)
> 6	14%	12,622	(43%)	2.0	89,580	(78%)
> 8	7%	6,942	(24%)	1.5	103,877	(90%)

¹estimated from training data ²in coding exons 1-3 **no classification