Cleaning validation (CV) is driven by regulatory expectations to ensure that residues from one product will not carry over and cross contaminate the next product.1,2 Regulatory scrutiny is more rigorous in a multiproduct facility compared to a single product establishment. Companies are usually cited either for not having a sound cleaning validation or not meeting the protocol acceptance criteria. Because failing a protocol acceptance criteria is considered a substantial regulatory risk, companies are forced to spend money and resources even though there is minimal or no product risk.
Validation refers to establishing documented evidence that a process or system, when operated within established parameters, can perform effectively and reproducibly to produce a medicinal product meeting its predetermined specifications and quality attributes
Thursday, October 23, 2008
Risk-Based Cleaning Validation in Biopharmaceutical API Manufacturing
Testing a New Chromatography Column for Cleaning Effectiveness
Cleaning validation is a critical consideration in the pharmaceutical industry. Inadequate cleaning can result in contamination of drug products with bacteria, endotoxins, active pharmaceuticals from previous batch runs, and cleaning solution residues. Such contaminants must be reduced to safe levels, both for regulatory approval and to ensure patient safety.
Equipment Cleaning Validation Within a Multi-Product Manufacturing Facility
Currently, there are multiple publications, as well as guidelines from regulatory agencies that make the critical process of equipment cleaning validation easier. These sources provide in-depth information for the validation specialist, making the development and implementation of a robust cleaning validation program possible within any particular facility developing or manufacturing parenteral, biological, or sterile ophthalmic products.
Extremely important, specific, and above all, mandatory, are the requirements established by regulatory agencies such as the US Food and Drug Administration (FDA), the European Medicinal Evaluation Agency (EMEA), Australia's Therapeutic Goods Administration (TGA), etc. For example, the 2004 Code of Federal Regulations (CFR) Title 21, Volume 4, Section 211.67, states:
Risk-Management Assessment of Visible-Residue Limits in Cleaning Validation
Before formal cleaning validation programs were instituted, visual inspection was the primary means of determining equipment cleanliness. The use of visual inspection is still typically a component of a cleaning validation program and for routine inspections of cleaning effectiveness, but the use of visual inspection as a sole criterion for equipment cleanliness has not been successfully implemented as a valid approach for cleaning validation.
A validated cleaning program based on quantitative visual inspections in conjunction with swab testing is possible. Acceptable visible-residue limits (VRLs) can be established in conjunction with and compared with swab results. Assuming the swab results demonstrated a validated cleaning procedure, if the results are in agreement, then the VRLs may be used going forward. A similar argument has been successfully used to defend the use of rinse sampling established in conjunction with swab results.
Correlation of Visible-Residue Limits with Swab Results for Cleaning Validation
The use of visual inspection as a criterion for equipment cleanliness has always been a component of cleaning validation programs. Mendenhall proposed the use of only visual examination to determine equipment cleanliness as long ago as 1989 (1). He concluded that visible cleanliness criteria were more rigid than quantitative calculations and clearly adequate. The US Food and Drug Administration limited the use of visually clean criterion between lots of the same product (2). LeBlanc raised the question of whether a visible limit as the sole acceptance criterion could be justified (3).