Phase I Trial

**Semantic type:** Research Activity

**Definition:** A clinical research protocol designed to test a new biomedical intervention in a small group of people for the first time. A Phase I trial can be to establish the toxicity of a new treatment with escalating intensity of the treatment administered and/or to determine the side effects of a new treatment for a particular indication in subjects.

**Synonyms:** - 1 - Clinical Trials, Phase I - Early-Stage Clinical Trials - PHASE I TRIAL - Phase 1 - Phase 1 - Phase 1 Study - Phase I Clinical Trials - Phase I Protocol - Phase I Study - Trial Phase 1 - phase 1 - phase I trial