Table 2:

Observed and Expected Integration Sites per Chromosome

Chromosome	Chromosome length	Integration Sites Observed Expected
1	2.49×108	44	40.9
2	2.43×108	47	39.9
3	1.98×108	34	32.6
4	1.90×108	39	31.2
5	1.82×108	26	29.8
6	1.71×108	28	28.1
7	1.59×108	25	26.2
8	1.45×108	19	23.8
9	1.38×108	21	22.7
10	1.34×108	21	22.0
11	1.35×108	19	22.2
12	1.33×108	18	21.9
13	1.14×108	20	18.8
14	1.07×108	16	17.6
15	1.02×108	13	16.8
16	9.03×107	9	14.8
17	8.33×107	12	13.7
18	8.04×107	10	13.2
19	5.86×107	19	9.6
20	6.44×107	13	10.6
21	4.67×107	7	7.7
22	5.08×107	8	8.3
X	1.56×108	25	19.2
Y	5.72×107	1	2.3

Expected integration sites per chromosome were calculated assuming that the incidence of integration was proportional to chromosome length. Integration incidence for the X and Y chromosome were adjusted to account for the equal numbers of males and females in the patient population.