Median PFS ( 95 % confidence interval ) was not significantly different across treatment arms ( 200 LY293111 : 4.6 months [ 3.2-5 .0 ] ; 600 LY293111 : 5.6 months [ 4.1-6 .8 ] ; placebo : 6.0 months [ 5.2-7 .5 ] ) .