CARG Chemotherapy Toxicity Tool
Estimates the risk of severe chemotherapy-related toxicity (Grade 3 or greater) in older adults with cancer.
Clinical decision support only
Use alongside a comprehensive geriatric and oncology assessment. This calculator does not replace clinical judgment.
CARG-TT score
0 / 23
Risk categoryRisk of severe chemotherapy toxicity
| Score | Risk category | Reported Grade 3–5 toxicity risk |
|---|---|---|
| 0–3 | Low | 25% |
| 4–5 | Low | 32% |
| 6–7 | Intermediate | 50% |
| 8–9 | Intermediate | 54% |
| 10–11 | High | 77% |
| 12–19 | High | 89% |
Scores of 20–23 remain high risk, but the original published risk table reports the highest toxicity percentage for scores 12–19. Review results in clinical context.
