Validation Chapter 4 1. Validation Exemplifies Process Understanding 2.

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Presentation transcript:

Validation Chapter 4 1

Validation Exemplifies Process Understanding 2

FDA Definition  “The process of demonstrating, through documented evidence, that a process, procedure, piece of equipment, analytical method, or facility will consistently produce a product or result that meets predetermined specifications and quality attributes.” 3

Validation  Documented evidence that – the facility, equipment, and utilities all perform as expected – the analytical methods used in the quality control laboratory perform as expected – each step of the production process contributes to a final product that meets all of the quality attributes and specifications 4

Validation  Validation is an external check on the performance of a system and ultimately the entire manufacturing process – If the process performs properly, it should produce a product that meets predetermined specifications – If it does not perform properly, a step in the process exists that is either inadequately understood or is not performing as designed. 5

Demonstration and Documentation  Validation also forces the biomanufacturer to examine assumptions about equipment, materials, procedures, and the entire production process – one can assume that material placed in an autoclave will be sterilized if the autoclave is working properly – But how can that person know that the autoclave is working properly or that it sterilizes the material to meet the necessary established standard if it is working properly? 6

Validation Evolution  Validation remains a time-consuming and expensive process  It is improved from the old mindset validate anything that moves and don’t move anything that is validated  The current approach incorporates process understanding and risk assessment towards an elimination or reduction of those risks 7

Validation Evolved  Product and process knowledge culminate in validation activities – Documentation that the controlled processes result in products with desired quality attributes  To this end, biomanufacturers should – Understand the sources of variation – Detect the presence and degree of variation – Understand the impact of variation on the process and ultimately on product attributes – Control the variation in a manner commensurate with the risk it represents to the process and product 8

Demonstrating Process Parameters  Temperature-mapping studies to ensure that all areas within the vessel achieve the desired temperature  The mixing rate of the material needs to be documented to prove that as the solution is mixed it maintains its temperature.  Testing under worse-case scenarios – Maximum volume, lowest mixer setting, partially-operable heater, other plausible mechanical issues  Verification that if specifications are met at the limits of the ranges, the specifications will assuredly be met at the normal operating range – All with no impact on product quality! 9

Risk-based Validation  Risk analysis is a formal analytical activity – Identify – Assess – Manage  Risks considered in this process are related to – Product – Patient – Employees of the biomanufacturer 10

Identifying Systems  Develop a comprehensive list of all systems in the manufacturing operation, categorized by functional area – facility, equipment, and utility systems – analytical equipment systems – computerized systems – cleaning systems 11

Systems Impact Assessment (SIA)  The Systems Impact Assessment (SIA) is a process to determine which systems should be subject to qualification, which evaluates the impact that a system has on product quality  Each identified system is then categorized as one of the following – Direct Impact (DI) system – Indirect Impact (ID) system – No Impact (NI) system 12

Risk-based SIA  Conducted by a multi-disciplinary team consisting of representatives from engineering, validation, operations, quality assurance, etc  With the traditional approach toward validation, every system is qualified and validated  With the risk-based approach, qualification activities are limited to Direct Impact Systems (DI) 13

Risk assessment  patient safety: risk of a patient being physically harmed  product quality: risk that the product quality profile (identity, strength, quality, or purity) will be negatively impacted  compliance: risk of a regulatory enforcement action (e.g., FDA, EMA, etc.) or the delay of a product approval 14

GAMP V-Model Validation Plan User Requirement Specs Functional Requirement Specs Design Specifications Validation Report Performance Qualification Operational Qualification Installation Qualification System Build & Implementation Verifies Design Qualification 15