Table 2.

Summary of median time to tumor progression (TTP) (days), median survival (days) and fraction long-term survival for 15 Gy RT only, 15 Gy RT plus IT, 18.75 Gy RT only, 18.75 Gy RT plus IT, 22.5 Gy RT only, and 22.5 Gy RT plus IT

	Untreated control (N = 7)	15 Gy R ALL (N = 20)	15 Gy R + I ALL (N = 18)	p	18.75 Gy R ALL (N = 10)	18.75 Gy R + I ALL (N = 9)	p	22.5 Gy R ALL (N = 8)	22.5 Gy R + I ALL (N = 9)
Median time to tumor progression (TTP) (days)	N/A	13.5 (7–28)	20 (13–34)	0.013	19	28	0.006	40D, 47D, 140D	~230D
Median survival (days)	15	44 (22–360)	59 (41–93)	0.0098	43	58	0.0056	Median not reached	Median not reached
Fraction long-term survivors	0	1/20	0/18		0/10	2/9		5/8	8/9

For 22.5 Gy, median survival was not reached. TTP for the three mice that died of brain tumors are listed