7 qcdoe
TRANSCRIPT
7QC tools for Experiment Design and
Problem Solving
Surang Judistprasert
Bio-innova & Synchron co.,ltd
QbD - Regulatory insights ICH Q8 (R2)
The product is designed to meet patient
requirements
The process is designed to consistently meet the product’s critical
quality attributes & is continuously monitored and updated to assure
consistent quality over time
The impact of starting materials and process parameters on
product quality is understood
Critical sources of process variability are identified and controlled
Good science leads to better quality product, fewer product rejects/recalls, and enhanced public
health protection
QbD - Regulatory insights ICH Q8
(R2) Pharmaceutical Development
“The level of development will depend on the complexity of
the process and the product and on the opportunities
chosen or wanted by the applicant.”
Proposed by applicant, and approved by regulator, based
on demonstrated product knowledge and process
understanding
Degree of regulatory flexibility is determined by the level and
relevance of the scientific knowledge provided
7 Quality Control Tools
◦ Pareto chart
◦ Histogram
◦ Process flow diagram
◦ Check sheet
◦ Scatter diagram
◦ Control chart
Run chart
◦ Cause and effect diagram
Check sheet
A series of multivariate analyses, including DoE, was
undertaken to investigate the relationship between the
input attributes, compression process parameters and
output attributes
DOE1 = screening all parameter for find no impact
parameters
DOE2 = investigate more fully impact parameter to
Quality attributes. Find target range of parameters
DOE3 = investigate impact of the range of input on
target process parameter
Scatter diagram
Example for investigate range of
compression parameter
Study of effect parameter X
on Y = scatter diagram e.g.
stability trend
Pareto diagram (80/20)
28
16
12 12
64 3
0
5
10
15
20
25
30
Loose
Threads
Stitching
flaws
Button
problems
Material
flaws
Vilfredo Pareto (1848-1923)
Italian economist
20% of the population has
80% of the wealth
Juran used the term “vital few,
trivial many”. He noted that 20%
of the quality problems caused
80% of the dollar loss.
Pareto Diagram
Pareto Diagram Pareto Diagram
( No. of Occurrences)
Pareto Diagram Pareto Diagram
( No. of Occurrences)
Used to prioritize
actions.(Used during
phases to monitor the
situation, analyze causes,
and review effectiveness of
an action.)
Used to identify and
prioritize a problem.
Used to review the effects of
an action taken.
Allows clarification of
important tasks.
Allows identification
of a starting point
(which task to start
with).
Allows projection of
the effects of a measure
to be taken
Method Usage Result
Benefit of 7QC tools
Identifies problems Give importance for planning Stress to importance of the process Priorities task Encourage everyone to think
systematically