Early-Stage Clinical Study

An Early-Stage Clinical Study is a clinical study that is conducted before a fully approved clinical trial starts.

• Example(s):
  • Early Feasibility Studies (EFS) Program,
  • Preclinical Trial,
  • …
• Counter-Example(s):
  • Compassionate Use Clinical Trial,
  • Phase-0 Clinical Trial,
  • Phase-I Clinical Trial,
  • Phase-II Clinical Trial,
  • Phase-III Clinical Trial,
  • Phase-IV Clinical Trial.
• See: Limited Clinical Investigation Program, Large-Simple Clinical Trial, Investigational Device Exemption (IDE) Program, Investigational New Drug (IND) Program.

---

---