What does the term 'Step 4' refer to in the ICH process?

• A. The stage at which the final draft is recommended for adoption to regulatory bodies.
• B. The initial drafting phase within the Expert Working Group.
• C. The phase where trial data are audited by regulators.
• D. The step when public comments are closed.

Answer: (A)

Step four is the point in the ICH process where the final draft of a guideline is put forward for adoption by regulatory authorities. After drafting and earlier rounds of review and public comment, this stage is where ICH reaches consensus that the guideline should be endorsed by regulators in member regions. It marks the transition from development to formal regulatory endorsement. The other activities—initial drafting, regulators auditing trial data, or closing public comments—occur earlier or outside this adoption stage.