How will participants' data be handled if they withdraw from the trial?

• A. Data handling in accordance with regulatory requirements
• B. Data must be destroyed immediately
• C. Data will be published publicly
• D. Data will be kept forever without restrictions

Answer: (A)

When a participant withdraws from a trial, how their data is handled must follow the consent they signed and applicable regulatory requirements. In practice, data collected up to the point of withdrawal are typically retained and may be used in the study’s analyses to preserve the integrity of the results and to meet regulatory and sponsor requirements, unless the participant explicitly asks that their data not be used. This approach also supports necessary safety monitoring and audit trails.

Destruction of data immediately is not appropriate because there are retention obligations and data already collected may need to be retained for regulatory purposes. Public publication of the withdrawn participant’s data would raise confidentiality and consent issues. Keeping the data forever without any restrictions ignores the consent terms and applicable laws.