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Quality Experts
@quality-experts
Eminent Member
Joined: Apr 15, 2025
Last seen: Sep 9, 2025
Topics: 0 / Replies: 29
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RE: Statistical Tools & Software for Analytical Development

The equivalence test TOTS is included in minitab from version 17. Join Dr Francisca Galindo Garre from Johnson & Johnson Innovative Medicine...

1 month ago
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RE: Method Comparability and Statistics for Analytical Development

The criterium 3 SD is commonly used for Bland-Altman plot. Note that this criterion should include 99.99% of differences. It is also important to chec...

1 month ago
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RE: Equivalence Testing

To set equivalence limits we should take into account which differences are scientifically relevant and also the variation of the methods that we are ...

1 month ago
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RE: Bridging of methods or critical materials

Generally, I think it is essential to distinguish a method bridging from an instrument change. For method bridging (moving from one analytical method ...

1 month ago
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RE: Vendor support when updating analytical procedures

The interest by manufacturers to support users is very well appreciated. I think first of all an active exchange is beneficial in all cases. Generally...

1 month ago
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RE: Instruments updates and method validation

ICH Q2R2 chapter 2.2 offers three scenarios that depend on the degree of performance differences between the two instruments. In case the readout is c...

1 month ago
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RE: Established conditions CGT

The use of EC, or rather avoiding that the ECs are not too extensive, is not related to the modality, I think, but rather the amount of knowledge. It ...

1 month ago
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RE: Enhanced Approach and ICH Q14

The cornerstone of the whole approach is the ATP. If priority has to be given to a "part", then definitely the ATP. The ATP alone is not enough for th...

1 month ago
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RE: Control Strategy

Chronologically speaking, the validation is performed first (and it is recommended to include such a control as part of the validation), then the tren...

1 month ago
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RE: Robustness

I fear that we might have a too statistical view of robustness, especially for early phases. Robustness data might be the voice of the customer (does ...

1 month ago
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RE: ATP and filings

Not currently, but it is our goal for our next filings to better justify that certain CQAs, when controlled by an analytical procedure, are correctly ...

2 months ago
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RE: Method Operable Design Region (MODR)

I do not think that MODR (except in exceptional cases) has much added value. As correctly stated in the question, the cost of establishing an MODR req...

2 months ago
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RE: ICH Q14: software-assisted method development

Yes, I think that the enhanced approach is an incentive to use software-assisted method development. Pieces of software are already used to automate, ...

2 months ago
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RE: Forced degradation testing

I have no experience with CAR and ELISA assay forced degradation. Available guidance, such as the Brazilian ANVISA, Guideline No. 04/2015 focus on che...

2 months ago
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RE: MODR (Method Operating Design Region) as method

I do not have specific information, but I have heard that Pfizer and GSK filed MODRs. Join Dr. Joachim Ermer from Ermer Quality Consulting to le...

2 months ago
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