leachable studies and routine extractables testing -...
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LeachableLeachable Studies and Studies and Routine Extractables TestingRoutine Extractables Testing
PQRI Workshop on Leachables and ExtractablesPQRI Workshop on Leachables and ExtractablesDecember 6, 2005December 6, 2005
Diane M. Diane M. PaskietPaskietParenteralParenteral Drug Association (PDA)Drug Association (PDA)
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Best PracticesBest Practices
Recommendations Recommendations ApplicationApplicationGoalsGoalsMethod DevelopmentMethod DevelopmentSpecial Case CompoundsSpecial Case CompoundsCorrelationCorrelationValidationValidationSpecifications and Acceptance CriteriaSpecifications and Acceptance Criteria
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PQRIPQRIRecommendationsRecommendations
Metered Dose Inhaler (MDI) and Dry Metered Dose Inhaler (MDI) and Dry Powder Inhaler (DPI) Drug Products Powder Inhaler (DPI) Drug Products Chemistry, Manufacturing and Controls Chemistry, Manufacturing and Controls DocumentationDocumentationNasal Spray and Inhalation Solutions Nasal Spray and Inhalation Solutions Suspensions, and Spray Drug Products Suspensions, and Spray Drug Products Chemistry Manufacturing and Controls Chemistry Manufacturing and Controls DocumentationDocumentation
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Summary of RecommendationsSummary of RecommendationsLeachableLeachable Evaluations Should be Based on Evaluations Should be Based on Methods/Techniques Used in Controlled Methods/Techniques Used in Controlled Extraction Studies Extraction Studies Analytical Methods Should be Guided by the Analytical Methods Should be Guided by the AET AET Comprehensive Correlation May Obviate the Comprehensive Correlation May Obviate the Need for Routine Implementation of Drug Need for Routine Implementation of Drug Product Product LeachableLeachable Specifications and Specifications and Acceptance CriteriaAcceptance CriteriaAcceptance Criteria for Leachables Should Acceptance Criteria for Leachables Should Apply Over the Proposed ShelfApply Over the Proposed Shelf--Life and Include Life and Include Quantitative Limits for Known and Quantitative Limits for Known and New/Unspecified LeachablesNew/Unspecified Leachables
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Summary of RecommendationsSummary of RecommendationsExtractable Testing Should be Based on Extractable Testing Should be Based on Methods/Techniques Used in Controlled Methods/Techniques Used in Controlled Extraction StudiesExtraction StudiesSpecifications and Acceptance Criteria Should Specifications and Acceptance Criteria Should be Established for all OINDP Critical be Established for all OINDP Critical Components Prior to Drug Product ManufactureComponents Prior to Drug Product ManufactureLeachableLeachable and Extractable Methods Should be and Extractable Methods Should be Validated According to ICH Validation Validated According to ICH Validation CharacteristicsCharacteristicsSpecial Case Compounds Require Evaluation Special Case Compounds Require Evaluation by Specific Analytical Techniques and Defined by Specific Analytical Techniques and Defined ThresholdsThresholdsSafety Consultation Should be Incorporated in Safety Consultation Should be Incorporated in the Early Stages of a the Early Stages of a LeachableLeachable StudyStudy
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LeachableLeachable StudyStudy
A A LeachableLeachable Study is a laboratory Study is a laboratory investigation into the qualitative and investigation into the qualitative and quantitative nature of a particular OINDP quantitative nature of a particular OINDP leachables leachables profile(sprofile(s) over the proposed ) over the proposed shelfshelf--life of the product.life of the product.
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ApplicationApplicationComprehensive Comprehensive LeachableLeachable StudiesStudies–– MDIMDI–– Nasal SprayNasal Spray–– Inhalation SprayInhalation Spray
Stability or Stability or ““OneOne--TimeTime”” LeachableLeachable StudiesStudies–– DPIDPI
If potential If potential leachablesleachables have safety concernshave safety concerns
LeachableLeachable Study Not RequiredStudy Not Required–– Inhalation SolutionInhalation Solution
Aqueous Drug Product and no Extractables at AETAqueous Drug Product and no Extractables at AETNo Evidence of Migration through ContainerNo Evidence of Migration through Container
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LeachableLeachable Study GoalsStudy GoalsTo help establish an To help establish an extractables/leachablesextractables/leachablescorrelation.correlation.To understand the trends in drug product To understand the trends in drug product leachablesleachables levels over the shelflevels over the shelf--life of the life of the product.product.To determine maximum To determine maximum leachablesleachables levels up levels up to the proposed end of shelfto the proposed end of shelf--life of the product.life of the product.To support a comprehensive safety evaluation To support a comprehensive safety evaluation of drug product of drug product leachablesleachables..To establish drug product To establish drug product leachablesleachablesspecifications and acceptance criteria, should specifications and acceptance criteria, should these be required.these be required.
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LeachableLeachable MethodsMethods
Based on Analytical Techniques used in Based on Analytical Techniques used in the Controlled Extraction Studythe Controlled Extraction StudyOptimize Measurement and Recovery of Optimize Measurement and Recovery of Potential LeachablesPotential LeachablesGuided by the AETGuided by the AET–– ““how low to gohow low to go””Must be Fully Validated According to Must be Fully Validated According to Accepted Parameters and CriteriaAccepted Parameters and Criteria
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Special Case LeachablesSpecial Case Leachables
Lower ThresholdsLower ThresholdsDedicated MethodsDedicated Methods–– OptimizedOptimized–– ValidatedValidatedAppropriate SpecificationsAppropriate SpecificationsQualificationQualificationRisk AssessmentRisk Assessment
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PolynuclearPolynuclear Aromatic HydrocarbonsAromatic Hydrocarbons
NaphthaleneNaphthaleneAcenaphthyleneAcenaphthyleneFluoreneFluorenePhenanthrenePhenanthreneFluorantheneFluorantheneAnthraceneAnthracenePyrenePyreneBenzo(a)anthraceneBenzo(a)anthracene
ChryseneChryseneBenzo(b)fluorantheneBenzo(b)fluorantheneBenzo(k)fluorantheneBenzo(k)fluorantheneIndeno(1,2,3Indeno(1,2,3--cd)pyrenecd)pyreneBenzo(a)pyreneBenzo(a)pyreneBenzo(e)pyreneBenzo(e)pyreneDibenzo(ah)anthraceneDibenzo(ah)anthraceneBenzo(ghi)peryleneBenzo(ghi)perylene
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NitrosaminesNitrosamines
NN--nitrosodimethylaminenitrosodimethylamineNN--nitrosodiethylaminenitrosodiethylamineNN--nitrosodinitrosodi--nn--butylaminebutylamineNN--nitrosopiperidinenitrosopiperidineNN--nitrosopyrrolidinenitrosopyrrolidineNN--nitrosomorpholinenitrosomorpholine
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LeachableLeachable Method DevelopmentMethod Development
Recovery of LeachablesRecovery of Leachables–– Type of Drug ProductType of Drug Product–– Spiking Studies Spiking Studies Linear Dynamic RangeLinear Dynamic Range–– Based on Levels of Potential LeachablesBased on Levels of Potential LeachablesLimit of Limit of QuantitationQuantitation–– Consideration of AETConsideration of AET
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Validation of Validation of LeachableLeachable MethodsMethods
Validated according to ICH GuidelinesValidated according to ICH Guidelines–– Characteristics of a quantitative impurity testCharacteristics of a quantitative impurity test
Accuracy, Precision, Specificity, LOQ, Accuracy, Precision, Specificity, LOQ, Linearity Linearity and Rangeand Range
–– Validation Parameter Acceptance CriteriaValidation Parameter Acceptance Criteria–– Characteristics of Limit TestsCharacteristics of Limit Tests
Specificity and LODSpecificity and LOD
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L&E CorrelationL&E CorrelationComprehensiveComprehensive–– QualitativeQualitative–– QuantitativeQuantitative–– Multiple Batches of Drug ProductMultiple Batches of Drug Product–– Multiple Lots of Critical Container Closure Multiple Lots of Critical Container Closure
ComponentsComponents–– All Product OrientationsAll Product Orientations–– Accelerated Storage ConditionsAccelerated Storage Conditions–– Full ShelfFull Shelf--LifeLife
End of ShelfEnd of Shelf--Life ProfilesLife Profiles–– LeachableLeachable less than or equal to extractablesless than or equal to extractables
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Qualitative CorrelationQualitative Correlation
A A qualitative correlationqualitative correlation can be can be established if all compounds detected in established if all compounds detected in validated validated leachablesleachables studies can be linked studies can be linked qualitatively either directly or indirectly to qualitatively either directly or indirectly to an extractable identified in comprehensive an extractable identified in comprehensive Controlled Extraction Studies or during Controlled Extraction Studies or during Routine Extractables Testing. Routine Extractables Testing.
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Quantitative CorrelationQuantitative Correlation
A A quantitative correlationquantitative correlation between a between a leachableleachable and an extractable can be made and an extractable can be made if the level of the if the level of the leachableleachable is is demonstrated to be consistently less than demonstrated to be consistently less than that of the that of the extractable(sextractable(s) to which it is ) to which it is qualitatively correlated. qualitatively correlated.
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MDI Leachables/Extractables Profile ComparisonMDI Leachables/Extractables Profile Comparison
5.00 10.00 15.00 20.00 25.00 30.00 35.000
1000000
2000000
3000000
4000000
5000000
6000000
7000000
8000000
9000000
1e+07
1.1e+07
1.2e+07
1.3e+07
1.4e+07
Time-->
Abundance
TIC: 11100303.D
Placebo Leachables 1 week timepoint
5.00 10.00 15.00 20.00 25.00 30.00 35.000
500000
1000000
1500000
2000000
2500000
3000000
3500000
4000000
4500000
5000000
5500000
6000000
6500000
7000000
7500000
8000000
8500000
9000000
9500000
1e+07
1.05e+07
1.1e+07
1.15e+07
1.2e+07
1.25e+07
1.3e+07
1.35e+07
Time-->
Abundance
TIC: 02050302.D
Extractables 24 hr Soxhlet
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LeachableLeachable TrendingTrendingQualitative and Quantitative ProfilesQualitative and Quantitative Profiles–– LeachableLeachable Profiles of at Least 3 Drug Product Profiles of at Least 3 Drug Product
Registration BatchesRegistration Batches–– Extractable Profiles of Container /Closure Extractable Profiles of Container /Closure
Components used in the Registration BatchesComponents used in the Registration Batches
Consistency of CorrelationConsistency of Correlation–– Multiple Extractables and Multiple Extractables and LeachableLeachable ProfilesProfiles
Profile Evaluation Profile Evaluation –– Suitability of Extractable Suitability of Extractable LeachableLeachable MethodsMethods
Variability in Component Composition/ManufacturingVariability in Component Composition/ManufacturingDrug Product Formulation Changes Drug Product Formulation Changes Drug Product Reaction ProductsDrug Product Reaction Products
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LeachableLeachable SpecificationsSpecifications
Quantitative limits for known drug product Quantitative limits for known drug product leachables monitored during registration leachables monitored during registration stability studiesstability studiesA Quantitative Limit for A Quantitative Limit for ‘‘newnew”” or or unspecifiedunspecified”” leachableleachable not detected or not detected or monitored during product registration monitored during product registration stability studies.stability studies.
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Quantitative Acceptance CriteriaQuantitative Acceptance Criteria
Based on Based on LeachableLeachable LevelsLevelsTrends of Trends of LeachableLeachable Levels Over Time Levels Over Time and Across Various Storage Conditions and Across Various Storage Conditions and Orientations During Product and Orientations During Product Registration Stability StudiesRegistration Stability StudiesAppropriate Statistical AnalysisAppropriate Statistical Analysis
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LeachableLeachable ControlControl““IF Tested Will ComplyIF Tested Will Comply””
Assume Appropriate CorrelationAssume Appropriate Correlation–– Adequate Information from Critical Component Adequate Information from Critical Component
Suppliers with an Adequate Evaluation of this Suppliers with an Adequate Evaluation of this InformationInformation
–– Understanding of Critical Component Fabrication and Understanding of Critical Component Fabrication and Manufacturing ProcessesManufacturing Processes
–– Validated Validated LeachableLeachable Methods and Comprehensive Methods and Comprehensive LeachableLeachable StudyStudy
–– Validated Routine Extractable Testing and Adequate Validated Routine Extractable Testing and Adequate Data Base of Critical Component Extractable ProfilesData Base of Critical Component Extractable Profiles
–– Appropriate Specifications and Acceptance Criteria Appropriate Specifications and Acceptance Criteria for Extractables from Critical Componentsfor Extractables from Critical Components
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Establishment and Implementation Establishment and Implementation of of LeachableLeachable Specifications and Specifications and
Acceptance Criteria for any OINDP Acceptance Criteria for any OINDP is Regulatory Policy and Outside the is Regulatory Policy and Outside the
Scope of the Working GroupScope of the Working Group’’s s ConsiderationConsideration
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Routine Extractables TestingRoutine Extractables Testing
Routine Extractables Testing is the Routine Extractables Testing is the process by which OINDP container process by which OINDP container closure system critical control components closure system critical control components are qualitatively and quantitatively profiled are qualitatively and quantitatively profiled for extractables, either for purposes of for extractables, either for purposes of establishing extractables acceptance establishing extractables acceptance criteria or release according to already criteria or release according to already established acceptance criteria.established acceptance criteria.
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Extractable Testing GoalsExtractable Testing GoalsTo establish To establish extractablesextractables specifications and specifications and acceptance criteria for OINDP critical container acceptance criteria for OINDP critical container closure system components.closure system components.To help ensure that the To help ensure that the leachableleachable profile in the profile in the drug product is maintained within appropriate drug product is maintained within appropriate limits.limits.To release OINDP container closure system To release OINDP container closure system critical components according to established critical components according to established specifications and acceptance criteria, which specifications and acceptance criteria, which are designed to:are designed to:
–– Control the identities and levels of Control the identities and levels of extractablesextractablesidentified during Controlled Extraction Studies;identified during Controlled Extraction Studies;
–– Detect Detect ““unspecifiedunspecified”” extractablesextractables which could be which could be present as the result of component ingredient present as the result of component ingredient changes, manufacturing changes, external changes, manufacturing changes, external contamination, or other causescontamination, or other causes
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Routine Extractable MethodsRoutine Extractable MethodsBased on Controlled Extraction StudiesBased on Controlled Extraction StudiesSpecial Case Compounds Evaluated by Special Case Compounds Evaluated by Specific Analytical Techniques Specific Analytical Techniques Detect and Quantify All Extractables Detect and Quantify All Extractables Characterized in Controlled Extraction StudiesCharacterized in Controlled Extraction StudiesIdentify Unspecified Extractables which could Identify Unspecified Extractables which could Result from Unanticipated Changes in the Result from Unanticipated Changes in the Critical Component Ingredients or External Critical Component Ingredients or External ContaminationContaminationOptimized to be Rugged and Robust to have Optimized to be Rugged and Robust to have Ability to Transfer to Quality Control and Ability to Transfer to Quality Control and Manufacturing EnvironmentsManufacturing EnvironmentsFully Validated According to Accepted Fully Validated According to Accepted Parameters and CriteriaParameters and Criteria
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Extractables Profile Sulfur-Cured Elastomer
m in5 1 0 1 5 2 0 2 5 3 0 3 5
p A
0
5 0
1 0 0
1 5 0
2 0 0
2 5 0
3 0 0
3 5 0
4 0 0
5.00 10.00 15.00 20.00 25.00 30.00 35.000
200000
400000
600000
800000
1000000
1200000
1400000
1600000
1800000
2000000
2200000
2400000
2600000
2800000
3000000
3200000
3400000
Time-->
Abundance
TIC: 07300307.D
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Extractable Method DevelopmentExtractable Method Development
Recovery of ExtractablesRecovery of Extractables–– Extraction ProcedureExtraction Procedure
Asymptotic LevelsAsymptotic LevelsSpiking StudiesSpiking Studies
Linear dynamic RangeLinear dynamic Range–– Based on Levels of Potential LeachablesBased on Levels of Potential LeachablesLimit of Limit of QuantitationQuantitation–– Consideration of AETConsideration of AET
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Validation of Extractable MethodsValidation of Extractable Methods
Validated According to ICH GuidelinesValidated According to ICH Guidelines–– Characteristics of a Quantitative Impurity TestCharacteristics of a Quantitative Impurity Test
Accuracy, Precision, Specificity, LOQ, Accuracy, Precision, Specificity, LOQ, Linearity Linearity and Rangeand Range
–– CharacterticsCharactertics of Limit Testsof Limit TestsSpecificity and LODSpecificity and LOD
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Routine Extractable TestingRoutine Extractable TestingPerformed on Critical Control ComponentsPerformed on Critical Control ComponentsAcquire Data Base of Identified, Acquire Data Base of Identified, Unspecified and Special Case CompoundsUnspecified and Special Case CompoundsDevelop Specifications and Acceptance Develop Specifications and Acceptance CriteriaCriteriaProvide Data to Toxicologists to Assess for Provide Data to Toxicologists to Assess for Potential Safety Concerns Potential Safety Concerns Control of Critical Components for ReleaseControl of Critical Components for ReleaseMonitor for Level of Potential LeachablesMonitor for Level of Potential Leachables
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Extractable SpecificationsExtractable Specifications
Critical components should be released to Critical components should be released to drug product manufacture based on drug product manufacture based on defined specification and acceptance defined specification and acceptance criteriacriteriaSpecifications depend on the type of Specifications depend on the type of critical component and adequacy of critical component and adequacy of leachableleachable and extractable correlationand extractable correlation
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Extractables Acceptance CriteriaExtractables Acceptance Criteria
Confirmation of Extractable Identified in Confirmation of Extractable Identified in Controlled Extraction StudiesControlled Extraction StudiesQuantitative Limits for Extractables Quantitative Limits for Extractables Identified in Controlled Extraction StudiesIdentified in Controlled Extraction StudiesA Quantitative Limit for New or A Quantitative Limit for New or Unspecified Extractables Not Detected Unspecified Extractables Not Detected during Controlled Extraction Studies.during Controlled Extraction Studies.
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Summary of RecommendationsSummary of RecommendationsLeachableLeachable Evaluations Should be Based on Evaluations Should be Based on Methods/Techniques Used in Controlled Methods/Techniques Used in Controlled Extraction Studies Extraction Studies Analytical Methods Should be Guided by the Analytical Methods Should be Guided by the AET AET Comprehensive Correlation May Obviate the Comprehensive Correlation May Obviate the Need for Routine Implementation of Drug Need for Routine Implementation of Drug Product Product LeachableLeachable Specifications and Specifications and Acceptance CriteriaAcceptance CriteriaAcceptance Criteria for Leachables Should Acceptance Criteria for Leachables Should Apply Over the Proposed ShelfApply Over the Proposed Shelf--Life and Include Life and Include Quantitative Limits for Known and Unspecified Quantitative Limits for Known and Unspecified LeachablesLeachables
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Summary of RecommendationsSummary of RecommendationsExtractable Testing Should be Based on Extractable Testing Should be Based on Methods/Techniques Used in Controlled Methods/Techniques Used in Controlled Extraction StudiesExtraction StudiesSpecifications and Acceptance Criteria Should Specifications and Acceptance Criteria Should be Established for all OINDP Critical be Established for all OINDP Critical Components Prior to Drug Product ManufactureComponents Prior to Drug Product ManufactureLeachableLeachable and Extractable Methods Should be and Extractable Methods Should be Validated According to ICH Validation Validated According to ICH Validation CharacteristicsCharacteristicsSpecial Case Compounds Require Evaluation Special Case Compounds Require Evaluation by Specific Analytical Techniques and Defined by Specific Analytical Techniques and Defined ThresholdsThresholdsSafety Consultation Should be Incorporated in Safety Consultation Should be Incorporated in the Early Stages of a the Early Stages of a LeachableLeachable StudyStudy