Summary of trial arms
| Trial arm | Total dose (Gy) | Total fractions | Fractions per day | Total number of days |
| Arm A: Standard | 55.0 | 20 | 1 | 26–28 |
| Arm B: CHART-ED | 54.0 | 36 | 3 | Days 1–12 |
| 10.8 | 6 | 2 | Days 15–17 | |
| Arm C: IDEAL-CRT | 63–71 | 30 | 1 with 1 twice daily treatment per week | 33–35 |
| Arm D: I-START | 55–65 | 20 | 1 | 26–28 |
| Arm E: Isotoxic IMRT | 61.2–79.2 | 34–44 | 2 | 23–30 depending on dose escalation |