Which statement best describes the relative durations of drug discovery and drug development?

Which statement best describes the relative durations of drug discovery and drug development?

• A. Discovery 2-5 years; Development 5-9 years.
• B. Discovery 6-10 years; Development 2-4 years.
• C. Discovery 1-2 years; Development 3-6 years.
• D. Discovery 5-7 years; Development 2-4 years.

Answer: (A)

The main idea here is that the discovery phase is shorter and focuses on finding and optimizing potential drug candidates, while the development phase is longer because it includes extensive safety testing, multiple stages of clinical trials, regulatory review, and manufacturing readiness. This makes the best description one that pairs a shorter discovery window with a longer development window. Specifically, discovery around two to five years and development around five to nine years fits the typical progression: you identify targets and lead compounds first, then you undertake preclinical work, Phase I–III trials, and regulatory steps, which together extend the timeline beyond discovery. The other options either flip the durations or assign unrealistically short development times relative to discovery, which doesn’t align with how these processes are usually paced.

The main idea here is that the discovery phase is shorter and focuses on finding and optimizing potential drug candidates, while the development phase is longer because it includes extensive safety testing, multiple stages of clinical trials, regulatory review, and manufacturing readiness. This makes the best description one that pairs a shorter discovery window with a longer development window. Specifically, discovery around two to five years and development around five to nine years fits the typical progression: you identify targets and lead compounds first, then you undertake preclinical work, Phase I–III trials, and regulatory steps, which together extend the timeline beyond discovery. The other options either flip the durations or assign unrealistically short development times relative to discovery, which doesn’t align with how these processes are usually paced.