Module 3 - Strategic case studies in practice

Development and Manufacture of Drug Substances (Chemical Entities and Biotechnological/Biological Entities)

5a. Example of a Possible Control Strategy Summary – Biotechnological Products

Section(s) in CTD where Detailed Information is Located

Drug Substance

Control Strategy for Drug Substance CQA

CQA

Contaminants in biologically sourced materials

Summaries of viral safety information for biologically-sourced materials

3.2.S.2.3

Detailed information including for materials of biological origin, testing at appropriate stages of production and viral clearance studies

3.2.A.2

(Viral Safety)

Residual Host Cell Proteins

Design space for an individual unit operation (e.g., see Example 3)

3.2.S.2.2

Target range for consistent removal assured by validation

3.2.S.2.5

Analytical procedures and their validation

3.2.S.4.2 and 3.2.S.4.3

Specific Glycoforms

Controls implicit in the design of the manufacturing process including a summary of process control steps (e.g., cell culture conditions, downstream purification, holding conditions etc.)

3.2.S.2.2

Characterisation to justify classification as CQA (cross reference to nonclinical/clinical sections if relevant)

3.2.S.3.1

Control of Critical Steps, Testing program and specifications

3.2.S.2.4 and/or 3.2.S.4.1

Justification of specification

3.2.S.4.5

Stability

3.2.S.7

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