The effect of treatment on UMSCC74B (top panel), SCCVII (middle panel), and MiaPCa2 (bottom panel) tumors is shown. Mice bearing 100 mm3 or larger tumors were treated with AT13387, Radiation, or a combination as described in methods. Tumor volume was measured three times per week, and weight was recorded daily. Shown here are the tumor volumes as a function of time (A, D, and G), median times to second tumor doubling (TD2) along with log-rank p-values after initiation of treatment (B, E, and H) and the effect of treatment on mouse body weight (C, F, and I). Control: purple; AT13387/AT: Blue; Radiation/RT: Red; AT+RT: Green.