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Here are the changes that will have the biggest practical impact:
1. Validation is no longer built around “3 consecutive batches.”
The guide now states that the number of Process Validation batches should be justified using science, process understanding and risk assessment, rather than following a fixed expectation. This is probably one of the most significant changes in the document.
2. Risk assessment now drives the entire validation strategy.
Risk assessment isn’t simply supporting validation anymore, it determines the validation scope, sampling, testing strategy, number of batches and overall approach.
3. Greater emphasis on statistical evidence.
PIC/S encourages the use of statistical tools such as Cpk, Ppk and MSPC to demonstrate process capability instead of relying solely on traditional pass/fail criteria.
4. Process Validation protocols are expected to be more robust.
The guidance introduces concepts such as traceability between risk assessments and validation protocols, strengthening the scientific rationale behind validation studies.
5. Ongoing Process Verification (OPV) becomes a stronger expectation.
Validation is clearly presented as a lifecycle activity, not something that finishes once PPQ is complete.
6. Performance Qualification (PQ) sampling expectations have increased.
The guidance notes that beginning, middle and end-of-batch sampling alone may not always be sufficient, and more intensive sampling may be required depending on risk.
7. Cleaning Validation receives much broader coverage.
The updated guide expands expectations for visual inspection, microbiological considerations, sampling, detergents, analytical methods, health-based limits and maintaining the validated state.
8. Data Integrity is embedded throughout validation activities.
Validation documentation is expected to demonstrate strong data governance, with independent verification where appropriate.
9. ASTM E2500 is recognised as an alternative qualification approach.
This is an important acknowledgement of modern, science- and risk-based verification principles for qualification activities.
10. Validation programmes are expected to evolve, not remain static.
The guide repeatedly reinforces continuous review, process understanding, change management and maintaining the validated state throughout the product lifecycle.
Read also:
Resource Person: Karim Yousry
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