Dose Escalation Study
Clinical trial design that systematically increases radiation doses to determine maximum tolerated dose and optimal treatment parameters.
Full Definition
A dose escalation study is a phase I clinical trial methodology used in radiation oncology to determine the maximum tolerated dose (MTD) and dose-limiting toxicities (DLT) for new treatment approaches. These studies typically follow protocols such as the 3+3 design, where cohorts of patients receive incrementally higher doses until unacceptable toxicity is observed. Dose escalation studies are essential for establishing safety profiles of new techniques, fractionation schedules, or combination therapies before proceeding to efficacy trials.
Usage
Usage note: Distinguish from therapeutic dose escalation for individual patients.
In Context
- "The dose escalation study protocol specified stopping rules based on grade 3 acute toxicity rates." — Clinical trial protocol
- "Results from the dose escalation study informed the recommended phase II dose of 24 Gy in 3 fractions." — Research manuscript