Table 15 . Numbers of deletions overlapping ORC binding sites compared to a comparable control region 10 kbp away (see text).

ORC score	Deletions		Control regions		Ratio
0	2615	0.91	2699	0.94	1.50
1/3	118	0.04	68	0.02	1.73
2/3	52	0.02	37	0.01	1.40
1	82	0.03	63	0.02	1.30
Total	2867		2867

The “ORC score” indicates in how many of three studied cell lines the ORC binding site was called. The first value in the ratio column (in italics) is the ratio for the union of three ORC score categories.