What role do data monitoring committees (DMC/DSMB) play in relation to the clinical database?

• A. They collect all data
• B. They fund the trial
• C. They supervise ongoing safety and trial integrity and may recommend continuation or termination
• D. They write the final manuscript

Answer: (C)

The main idea is that the DMC/DSMB provides independent, ongoing safety and trial integrity oversight as data accumulate. They review the accumulating data from the clinical trial—especially safety signals and data quality—using predefined stopping rules and interim analyses. Based on what they find, they may recommend continuation or termination of the trial to protect participants and preserve credible results. They aren’t responsible for collecting data (that’s the data management team), funding the trial (the sponsor), or writing the final manuscript (the investigators/authors). The DMC’s role is to watch over safety and integrity and advise on whether the trial should continue.