Table 1. Table 1: Incidence of Brain Metastasis at the Four-Week Endpoint .

Dose	Time of Irradiation	Incidence	%	p-value vs. PCI
0 Gy	-	10/13	77%	0.01
4 Gy	2 days pre-injection	10/10	100%	0.0007
4 Gy	5 days post-injection [PCI*]	2/10	20%	-
4 Gy	3 weeks post-injection	7/10	70%	0.07

*Prophylactic cranial irradiation