In patients who have residual bladder tumors after maximal TURBT, would you boost the GTV above typical doses, 55 Gy/20 fractions or 64 Gy/32 fractions, assuming you can meet constraint?

In the British study, (55/20 + MMC), these patients were encouraged but not required to undergo complete TURBT; ~45% in each arm of the study did not get a complete TURBT. No boost was given to those who did not get a complete TURBT.

As this is the only RCT (for some reason, the RTOG never did an RT...