8. The Quality Mantra
Process validation on 3 batches Not appropriate
30 Batches required for 90%
reliability & 95% confidence Not Practical
Make the design of experiment strong to
demonstrate SCIENCE behind variability
9. • A systematic approach to development that
begins with predefined objectives and
emphasizes product and process
understanding and process control, based
on sound science and quality risk
management. (ICH Q8 R2)
What is Quality by Design (QbD)?
10. What is Quality by Design (QbD)?
A systematic Approach
Predefined
Objectives
• Define Quality Target Product Profile (QTPP)
• Identify Critical Quality Attributes (CQA)
Product and
Process
understanding
• Identify critical material attributes (CMA) and critical
process parameters (CPP)
• Establish the functional relationships that link
• CMA/CPP to CQA
Process Control • Develop appropriate Control Strategy, including
• justifications
Sound Science • Science-driven development (scientific literature,
• prior knowledge, DOEs etc.)
13. The Quality Target Product Profile (QTPP)
provides an understanding of what will
ensure the quality, safety, and efficacy of a
specific product for the patient
Quality Target Product Profile (QTPP)
14. Dosage form Tablet
Dosage Design Immediate release ,film coated tablet
Route of administration Oral
Dosage Strength 20mg
Stability
At least 24 month shelf life at room
temperature.
Quality Target Product Profile (QTPP)
15. The Quality Target Product Profile (QTPP)
describes the design criteria for the
product, and should therefore form the
basis for development of the CQAs, CPPs,
and control strategy.
Quality Target Product Profile (QTPP)
17. A physical, chemical, biological, or
microbiological property or characteristic that
should be within an appropriate limit, range, or
distribution to ensure the desired product
quality (ICH Q8)
Critical Quality Attributes (CQA)
20. A physical, chemical, biological or
microbiological property or characteristic of an
input material that should be within an
appropriate limit, range, or distribution to
ensure the desired quality of output material.
Critical Material Attributes (CMA)
21. BCS Classification B
Chemical Properties Potential for hydrolytic degradation
Physical Properties Acceptable API (PSD) for dissolution
Product Shelf life
2 years 30c (hydrolysis degradation &
dissolution changes controlled by
packaging.
Critical Material Attributes (CMA)
23. A process parameter whose variability has an
impact on a CQA and therefore should be
monitored or controlled to ensure the process
produces the desired quality. (ICH Q8)
Critical Process Parameters(CPP)
27. The multidimensional
combination and interaction
of input variables e.g. material
attributes) and process
parameters that have been
demonstrated to provide
assurance of quality.
Slide 32 May 2008
Design Space (DS)
30. DOE; Blending Process Parameter Assessment to
Develop a Design Space
E# Blending Time Rotation Speed Blender Particle size (API)
1 2 10 V Type 5
2 16 10 V Type 40
3 2 30 V Type 40
4 16 30 V Type 5
5 2 10 Drum Type 40
6 16 10 Drum Type 5
7 2 30 Drum Type 5
8 16 30 Drum Type 40
9 9 20 V Type 20
10 9 20 Drum Type 20
11 9 20 V Type 20
12 9 20 Drum Type 20
33. The control strategy should describe and justify
• in-process controls
• controls of input materials (drug substance and
excipients)
• container closure system
Slide 36 May 2008
Control Strategy (CS)
Contribute to the final product quality
34. Take Home Message…
Quality by
Testing & Inspection
Enhanced
Product knowledge
Process
understanding
Quality by Design
Quality assured by well designed Product &
Process