evaluation for stability data q1e...evaluation for stability data q1e sumie yoshioka, ph. d. mhlw...
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Evaluation for Stability data Q1E
Sumie Yoshioka, Ph. D.
MHLW
National Institute of Health Sciences
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Q1E provides recommendations on :
How to use stability data generated according to Q1AR
When and how a retest period or a shelf life can be extended beyond the period covered by long-term data
Q1E contains
examples of statistical approaches to stability data analysis
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Extrapolation
toto extend retest period/shelf life
Statistical approaches
recommended in the guideline
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Significant
change
No Yes
Accelerated condition
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Where no significant change occurs
at accelerated condition
No YesLittle or no change
Little or no variability
Accelerated data & Long-term data
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Where accelerated data show
significant change
No YesSignificant
change
Intermediate condition
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Amenable?
Performed?
No Yes
Statistical analysis
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Available? No Yes
Supporting data
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12 month extension
Four outcomes passing through crossroadsfor Room Temperature Storage
No extension
6 month extension
3 month extension
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Outcome 1 12 month extension
accelerated data show
no significant change
accelerated data & long-term data
little or no change
little or no variability
Outcome 4 no extension
significant change
at accelerated condition
at intermediate condition
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Statistical analysis
longer retest period/shelf life
(not necessarily required)
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amenable?
performed?
Yes
No
12 month extension
6 month extension
Where
Accelerated data show no significant change
Changes and variations in accelerated data
long-term data
with Supporting data
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amenable?
performed?
Yes
No
6 month extension
3 month extension
Where
Significant change at accelerated condition
but not at intermediate condition
with Supporting data
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Statistical analysis can be appropriate to
verify retest period/shelf life
Statistical analysis
longer retest period/shelf life
not always required
Where
significant change
at accelerated & intermediate conditions
variability in long-term data
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Statistical approaches
recommended in the Appendix
How to analyze long-term datafor appropriate quantitative attributes
How to use regression analysisfor retest period/shelf life estimation
Examples of statistical procedures to determine poolability of data from different batches or factor combinations
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Regression analysis
Establish retest period/shelf life
with a high degree of confidence
Quantitative attribute will remain
within acceptance criteria
for all future batches
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Shelf-life Estimation with Upper and Lower Acceptance Criteria Based on Assay at
25C/60%RH
80
85
90
95
100
105
110
115
120
0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48
Time Point (Months)
Assa
y (
% o
f L
ab
el
Cla
im)
Raw Data
Upper confidence limit
Lower confidence limit
Regression line
Upper acceptancecriterion: 105
Lower acceptancecriterion: 95
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Statistical approaches
for determining whether data from different
batches/factor combinations can be pooled
(Approach #1) Whether data from all batches/factor combinations support the proposed period
(Approach #2 “Poolability test”)
Whether data from all batches/factor combinations can be combined for overall estimate of a single period
(Alternative approaches)
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Approaches #1 and #2 can
also be applied to data analysis
for multi-factor studies including Bracketing & Matrixing Designs
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Basic Principles
A shelf life is set based on long-termdata
The extent of extrapolation will depend on accelerated (and if applicable, intermediate) data, as well as long-term data
Supporting data are useful in predicting long-term stability in primary batches
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Basic Principles (cont’d)
Statistical analysis is not always necessary for setting a shelf life
A shelf life beyond the period covered by available long-term data can be proposed with supporting data, with or without statistical analysis
Where a statistical analysis is performed, longer extrapolation can be justified
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MHLW Perspective - Q1E
Before Q1E
EU---12 month extrapolation with or without statistical analysis;
US--- max 6 month extrapolation with statistical analysis;
Japan--- no practical extrapolation
Q1E provides guidance on the extent of shelf life extrapolation in a variety of situations
Q1E clearly describes the role of accelerated data and of supporting data in shelf life estimation