Table 1.

Comparison of transposon integration sites in normal and malignant T cells

	Obs/Exp*	χ2	P	Obs/Exp*	χ2	P
	Vav-SB control data (7099 events)			CD4-SB control data (11 180 events)
Vav-SB CIS regions (81 832 TA sites)	10/6	0.563	ns	8/6	0.071	ns
CD4-SB CIS regions (191 922 TA sites)	19/15	0.265	ns	14/15	0.035	ns
	Vav-SB tumor data (2843 events)			CD4-SB tumor data (4447 events)
VavSB CIS regions (81 832 TA sites)	249/1	255.3	< .0001	91/2	84.15	< .0001
CD4-SB CIS regions (191 922 TA sites)	64/3	60.26	< .0001	296/5	289.2	< .0001

Obs/Exp indicates no. of observed and expected insertion events; CIS, common insertion site; TA, potential SB insertion sites; and ns, not significant.

^*Calculation of expected insertion number is based on a total of 162 687 182 TA sites within the mouse reference genome.