Pharmaceutical Pilot Plant Scale-Up and Technology Transfer
General Considerations for Pilot Plant Scale-Up
These are the essential points to consider for pilot plant scale-up techniques. The primary objective is to facilitate the smooth transfer of products from a laboratory scale to a commercial scale at the company level.
Key Factors in Scale-Up Techniques
There are ten critical points to consider for pilot plant scale-up:
- Reporting Responsibility
- Personnel Requirement
- Space Requirement
- Raw Materials
- Review of the Formula
- Processing Equipment
- Process Evaluations
- Production Rates
- Master Manufacturing Procedures
- Stability & Uniformity (Quality Assurance)
Reporting Responsibility
The pilot plant function can be part of the R&D department or operation-oriented groups.
- For R&D: There is a need for separate staff; additionally, the product formulator can provide support even after the transition into production.
- For Operation-Oriented: This approach is more practical, as it is more substantial and accessible to operations.
Some organizations utilize both approaches to ensure the best quality. For optimal results, there should be a strong relationship and clear communication between the pilot plant and other departments, including R&D, packaging, processing, engineering, QA/QC, and marketing.
Administration and Documentation
Data from every experiment and trial performed on a product must be recorded and documented. This area also includes a sitting area for scientists and technicians. This space comprises:
- Space for discussing issues with the team.
- Computers for entering data.
- Space for historical books, files, protocols, and records.
Review of the Formula
A thorough review of every formulation aspect should be conducted during the scale-up process. The use and role of every ingredient in the final product manufacturing on small-scale laboratory equipment must be understood. These outcomes are then used for scale-up.
Master Manufacturing Procedures
The master process records are created for the optimized formulation. These records include manufacturing directions, chemical weight sheets, and in-process and finished product specifications. The processing steps should be accurate and written in a language understandable by the operator, commonly termed as SOPs (Standard Operating Procedures).
Batch record directions should include specifications for:
- Addition rates and mixing time.
- Mixing speed.
- Heating and cooling rates.
- Temperature controls.
Stability and Uniformity (Quality Assurance)
During production, the current and future market demands of a product should be considered. Analytical test procedures developed in research during the scale-up of a new product should be transferred to the Quality Assurance (QA) department. The QA staff must:
- Ensure proper analytical instrumentation is present and personnel are trained.
- Check the reliability of the tests.
- Review assay procedures before transfer.
- Conduct validation studies to confirm that analytical procedures remain unchanged.
SUPAC Guidelines for Post-Approval Changes
SUPAC stands for Scale-Up and Post-Approval Changes. It involves the scale-up process and changes made after approval regarding composition, manufacturing processes, equipment, and site changes.
Purpose and Scope of SUPAC Guidelines
SUPAC guidelines provide instructions to sponsors of NDAs (New Drug Applications), ANDAs (Abbreviated New Drug Applications), and AADAs (Abbreviated Antibiotic Applications) who wish to change the following after post-approval:
- Components or composition.
- The manufacturing site.
- The scale-up or scale-down of manufacture.
- The manufacturing process and equipment of an immediate-release oral formulation.
Levels of Changes and Documentation
SUPAC defines the following levels of changes:
- Minor change
- Moderate change
- Major change
Required Tests:
- Application/compendial tests.
- In vitro dissolution/release.
- In vivo bioequivalence.
Filing Requirements:
- Annual Report.
- Changes Being Effected (CBE).
- Prior Approval Supplement (PAS).
SUPAC guidelines also define recommended chemistry, manufacturing, and control tests, as well as the documentation supporting each level of change.
Understanding Technology Transfer
Technology transfer is defined as a “logical procedure that controls the transfer of any process together with its documentation and professional expertise between development or between manufacture sites.” It is both integral and critical to the drug discovery and development process for new medical products.
Importance of Technology Transfer
Technology transfer is helpful in developing dosage forms by providing process efficiency, maintaining product quality, and achieving standardized processes that facilitate cost-effective production. It is the process by which an original innovator makes technology available to a commercial partner.
In the pharmaceutical industry, technology transfer refers to the successful progress from drug discovery to product development, clinical trials, and full-scale commercialization. It includes patentable aspects of production as well as business processes, knowledge, and skills.
Facts of Technology Transfer
Technology transfer occurs between various entities:
- Government labs to private sector firms.
- Between private sector firms within the same country.
- Between private sector firms in different countries.
- From academia to private sector firms.
WHO Guidelines for Technology Transfer
According to WHO guidelines, the transfer of processes to an alternative site occurs at various stages in the life cycle of most products—from development, scale-up, manufacturing, production, and launch to the post-approval phase.
