A, Correlation of treatment effects on OS HR with the ratio of 6-month PFS milestone RMST. B, Correlation of OS HR with the ratio of 9-month PFS milestone RMST. C, Correlation of treatment effects on OS HR with the ratio of 9-month OS milestone RMST. D, Correlation of treatment effects on OS HR with the ratio of 12-month OS milestone RMST. Size of circles indicates size of trial (ie, larger circle indicates more participants).