ICH M4Q - Common Technical Document - Quality

What it says

The Quality module of a marketing application must be organized in a defined structure covering drug substance and drug product information, including manufacturing process description, control of materials, control of the drug product, and stability, following a harmonized format that allows the same core Quality data package to support applications across multiple ICH regions.

Paraphrased for plain-language clarity. Always verify against the current published regulation text.

What it means in practice

• This module-level structure is what actually organizes the chemistry, manufacturing and controls content described more generally in 21 CFR 314.50, giving reviewers in different regions a consistent place to find the same type of information.
• Because the Quality module's format is harmonized across ICH regions, a company can leverage substantially the same core Quality data package across multiple simultaneous global submissions, though region-specific content still applies in places.
• Inconsistencies between what is described in the Quality module and what a site's actual batch records and specifications show are among the most common findings connecting application content to real manufacturing practice.

What inspectors look for

• Whether the manufacturing process, specifications and controls described in the Quality module match current site practice.
• Whether updates to manufacturing or control information following application approval were reflected through the correct post-approval change mechanism.
• Whether stability data referenced in the Quality module remains consistent with the product's current shelf life and storage labeling.

Related regulations