Which body may be established by the sponsor to assess progress, safety data, and critical efficacy variables and to recommend continuation, modification, or termination?

• A. Principal Investigator
• B. Sponsor's project team
• C. Regulatory authority
• D. Independent Data Monitoring Committee

Answer: (D)

An Independent Data Monitoring Committee (IDMC) is the body the sponsor can establish to watch over trial progress, safety data, and critical efficacy outcomes, and to advise whether the study should continue, be modified, or be terminated. It operates independently from the investigators and sponsor staff, which helps prevent bias while focusing purely on participant safety and the integrity of the data. The IDMC reviews accumulating data at predefined points (and especially when safety concerns arise), often with access to unblinded results, and makes recommendations to the sponsor. While their guidance is highly influential and typically followed, the sponsor makes the final decision about continuing, altering, or stopping the trial.

The principal investigator conducts the trial at the study sites, and the sponsor’s project team is internal and not independent. The regulatory authority oversees the trial from a regulatory standpoint but does not function as the ongoing, independent monitor of trial data and safety.