Table 1. Distribution of FV vector integration sites in the human genome.

Integration sites within	FV (n = 799)	Random (n = 799)a	P value
Gene (%)	40.1	45.4	0.034
Exon (%)	3.1	2.8	0.77
Intron (%)	36.9	42.7	0.021
Gene upstream (≤30 kb, %)	33.9	20.4	1.53 × 10−9
Gene downstream (≤30 kb, %)	24.8	20.0	0.026

P value of ≤ 0.01 was considered statistically significant.

^aAverage of three size-matched sets of 799 random sites.