Guidelines for Stability Testing of Enzyme-Based Drugs
1) Purpose
The purpose of this SOP is to provide a standardized procedure for conducting stability studies on enzyme-based drugs. Stability testing ensures that enzyme-based drugs maintain their activity, safety, efficacy, and quality throughout their shelf life under various storage conditions.
2) Scope
This SOP applies to all enzyme-based drugs, including therapeutic enzymes and diagnostic reagents, produced or handled by the organization. It is intended for personnel involved in formulation development, quality control, and regulatory compliance.
3) Responsibilities
Formulation Scientist: Responsible for designing the stability study protocol and selecting appropriate stability-indicating parameters.
Quality Control
QA Team: Responsible for reviewing data, ensuring regulatory compliance, and approving the final stability report.
4) Procedure
4.1 Study Design:
- Identify stability-indicating parameters (e.g., enzymatic activity, purity, degradation products) relevant to the enzyme-based drug.
- Select appropriate analytical methods (e.g., Activity Assays, HPLC, SDS-PAGE) to evaluate these parameters.
- Define storage conditions (e.g., refrigerated, frozen) based on the product’s characteristics and regulatory guidelines.
- Develop a study protocol outlining the objectives, sampling schedule, and analytical methods to be used.
4.2 Sample Preparation:
- Prepare samples from representative production batches and label them with batch numbers, storage conditions, and sampling time points.
- Store samples in designated stability chambers under specified conditions.
4.3 Testing Schedule:
- Conduct initial testing on all samples to establish baseline data for the selected parameters.
- Perform follow-up testing at predetermined intervals (e.g., 1 month, 3 months, 6 months) to monitor changes in enzymatic stability over time.
- Document all test results and analyze data for trends or deviations from acceptance criteria.
4.4 Data Analysis and Reporting:
- Analyze data using statistical methods to determine trends and compliance with acceptance criteria.
- Prepare a stability study report summarizing findings, conclusions, and recommendations for storage and handling conditions.
- Submit the report for QA review and archiving.
5) Abbreviations, if any
QC: Quality Control
QA: Quality Assurance
SDS-PAGE: Sodium Dodecyl Sulfate Polyacrylamide Gel Electrophoresis
6) Documents, if any
Enzyme-Based Drug Stability Protocol: Document detailing the study plan and methodology.
Analytical Data Records: Data sheets for all tests performed.
7) Reference, if any
ICH Q5C: Stability Testing of Biotechnological/Biological Products
8) SOP Version
Version 1.0