Phase 2 trials primarily focus on...

• A. Testing the safe dosage range among a larger group (100-300) to examine efficacy and safety
• B. Evaluating long-term rare adverse events in the general population
• C. Post-marketing surveillance after approval
• D. Testing the safety of a drug in animals

Answer: (A)

Phase 2 trials focus on identifying a safe and potentially effective dose by testing several dosing levels in patients who have the condition, while continuing to collect data on efficacy and safety. This stage uses a larger group than Phase 1 and aims to establish the dose range that provides the best balance of benefit and tolerability before moving on to a larger, definitive trial. Long-term rare adverse events in the general population are typically evaluated after approval in Phase 4, not during Phase 2. Safety testing in animals occurs before human trials in the preclinical phase.