Which of the following occurs during Phase III of the Clinical Trial Process:

Question

BlackTom AI · Accepted Answer

When evaluating what happens in Phase III of the Clinical Trial Process, it’s helpful to map each option to the typical goals of Phase III trials as understood in clinical research.
Option a: 'Assess dosing requirements' — This is generally associated with early-phase work, particularly Phase I (safety and dosing) and Phase II (preliminary efficacy and further dosing exploration). Phase III focuses more on comparing the new treatment to standard care and confirming efficacy at established dosing, rather than determining dosing from scratch. Therefore, this statement does not accurately describe Phase III.
Option b: 'Evaluate the long-term effects of new drugs' — Phase III trials do collect more data on safety and adverse events, sometimes over longer periods, but the primary emphasis is on confirming efficacy and comparing to standard treatment. Long-term effect evaluation is more strongly linked with Phase IV (post-marketing surveillance) or extended follow-up within Phase III depending on the trial, but as a standalone statement it overstates Phase III’s sole purpose. Hence this option is not a typical core characterization of Phase III.
Option c: 'Apply for FDA approval' — The submission for regulatory approval (e.g., NDA/BIo) occurs after Phase III data have been collected and analyzed, not during Phase III itself. Therefore this step is outside Phase III and occurs later in the process, making this option incorrect for Phase III.
Option d: 'Doctors compare the treatment with the standard care for that disease' — This accurately reflects Phase III’s central aim: to compare the new intervention against the current standard of care in a larger, diverse patient population to establish relative efficacy and safety. This comparison to standard treatment is a hallmark of Phase III trials and is why they are often randomized and multicenter. Therefore, this option correctly describes Phase III.
In summary, the reasoning above shows that options a, b, and c describe activities associated with other stages of drug development, while option d aligns with the core objective of Phase III trials.

Which of the following occurs during Phase III of the Clinical Trial Process:

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