vaccine assessment for prequalification and …...copenhagen, denmark 24 – 27 september 2018...
TRANSCRIPT
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Copenhagen, Denmark 24 – 27 September 2018
Vaccine Assessment for Prequalification
and
Programmatic Suitability for
Prequalification
Dr Drew Meek Prequalification Team/Vaccines Assessment
Regulation of Medicines and other Health Technologies
World Health Organization
Geneva, Switzerland
E-mail: [email protected]
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Copenhagen, Denmark 24 – 27 September 2018
Prequalification process
Scientific review of quality dossier
Scientific review of clinical data
Testing of samples
Consultation with responsible NRA
Inspection to manufacturing facilities
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Copenhagen, Denmark 24 – 27 September 2018 Slide 3
Pharmaceuticals Vs Vaccines
•Pharmaceuticals
• Produced and controlled using physicochemical
methodologies
•Vaccines
• Production and testing using biological systems
– Raw materials
– Manufacturing processes
– Quality control methodologies
• Each vaccine is a unique product
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Copenhagen, Denmark 24 – 27 September 2018
Complex release process
vaccine
lot
QC QA
certificate of analysis batch records
Manufacturer’s release
Mfr. Country Reg Authority
lab tests doc.review
NRA release
vaccine distribution on the market
specific to
vaccines
lab. tests GMP compliance
specific to
vaccines
UN supply PQ vaccines
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Copenhagen, Denmark 24 – 27 September 2018
Quality Relationships
Quality Management
Quality Control
GMP
Quality Assurance
Management
Aspect
Quality system
Quality Policy
…
Personnel
Training
Validation
Self
inspection
Quality
Objective
Quality
Manual
Sampling
Specifications
Testing
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Copenhagen, Denmark 24 – 27 September 2018
Quality aspects considered
Manufacturing Process and Process Controls
Controls of Critical Steps and Intermediates
Manufacturing Process Development
Process Validation
Control of Drug Substance and Drug Product
Specifications & their justification
Analytical procedures including validation
Batch analysis
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Copenhagen, Denmark 24 – 27 September 2018
Quality aspects considered
Container Closure System
Stability
• Real time and accelerated
• VVM selection
• ECTC indication?
Consistency of Production at commercial scale
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Copenhagen, Denmark 24 – 27 September 2018
Quality aspects considered
• Programmatically suitable presentation
• Compliance with GMP
• Compliance with WHO recommendations and UN tender specifications including labels and inserts
• Capacity of Production
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Copenhagen, Denmark 24 – 27 September 2018
Common deficiencies – Dossier Review- Quality
A. Unclear specifications for biological raw materials, intermediates or finished product.
B. Insufficient information on stability of intermediates or finished product or cumulative stability. Missing information on storage time for intermediates.
C. Validation of in-house, new tests or in-house references.
D. Insufficient information on trend analysis, rejected batches, retest policy and out of specification policy.
E. Incomplete information for Master and/or Working Cell Bank, Master and/or Working Seed, seed lot system; primary cultures.
F. Unclear production process for intermediates, insufficient information on validation of production process and consistency lots.
G. Insufficient information on diluents, buffer, non-biological reagents and non-active ingredients.
H. Lack of tests required by WHO or the tests or specifications are different from WHO.
I. Unclear composition of finished product, formulation of the finished product or presentation.
J. Lack of comparability data for new production method or new production facility.
K. Lack of data to prove efficiency of proposed preservative or proposed concentration.
L. No information or unclear information on lot numbering system or setting date of manufacture.
59
68
41
22 26
45
15
33
12 6 6
11
0
10
20
30
40
50
60
70
80
A B C D E F G H I J K L
Nu
mb
er
of
Cases
Type of Deficiency
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Copenhagen, Denmark 24 – 27 September 2018
Dossier Review – Clinical aspects
• Clinical development program
• Applicant ’s sponsored clinical t r ial overview
• Clinical summary
• Independent Clinical expert report
• Pharmacovigilance plan
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Copenhagen, Denmark 24 – 27 September 2018
Common deficiencies as per categories
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Copenhagen, Denmark 24 – 27 September 2018 Slide 12
Outcome of the review of Dossier
•Scenario 1: Dossier review does not raise any outstanding issues
•Scenario 2: Dossier review raises outstanding issues for clarification/additional information (no major)
•Scenario 3: Dossier review raises major technical and programmatic issues
•Consistency testing and inspection are scheduled
•Outstanding issues may be followed up at site inspection &/or request for additional information •Consistency testing and inspection are scheduled
•Ad Hoc committee is convened • Request for additional information to give
final recommendation
• Stopping the PQ
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Copenhagen, Denmark 24 – 27 September 2018 Slide 13 24 – 27 September 2018
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Copenhagen, Denmark 24 – 27 September 2018 Slide 14
Programmatic Suitability for Prequalification
Programmatic Suitability for Prequalification
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Copenhagen, Denmark 24 – 27 September 2018 Slide 15
Programmatic Suitability for Prequalification
Programmatic Suitability for Prequalification
Dossier screening by WHO/PQT for completeness of content
Dossier also screened for PSPQ compliance
• non-compliance with a mandatory characteristics > rejection
of dossier
• non-compliance with a critical characteristics > referral to
Standing Committee
• unique/novel characteristic identified > referral to Standing
Committee
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Copenhagen, Denmark 24 – 27 September 2018
Can a review by the standing committee happen before
submission?
• Yes
• Vaccine development an extended process
• Manufacturers can discuss with PQ Secretariat pre-submission
• A briefing package can be prepared with company input for the SC to consider.
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Copenhagen, Denmark 24 – 27 September 2018
Who makes the final decision?
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Copenhagen, Denmark 24 – 27 September 2018 Slide 18
Mandatory characteristics
Antimicrobial preservative is required in ready to use injectable vaccines containing more than two-doses.
Thermostability: The vaccine or any component presented for prequalification should not require storage at less than -20°C.
Dose volume for injectable vaccines for children 5 years and under should be not more than 1 ml
vaccine presented for prequalification should not require an intravenous route of administration
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Copenhagen, Denmark 24 – 27 September 2018 Slide 19
Unique or innovative characteristic
• No guidance documents developed
• Examples: Nano-patches, micro-needle application
• Based on programme knowledge SC will judge the
suitability of such vaccines for the developing market
• PQT/VXA responsible for evaluation of quality and
clinical aspects of vaccine delivered with the
technology
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Copenhagen, Denmark 24 – 27 September 2018 Slide 20
Critical characteristics (1)
The vaccine should fit into currently commonly used schedules of vaccination visits.
Oral vaccines should be ready to use
Thermostability: If the vaccine requires storage below +2°C during its shelf-life period, it should be stable at +2°C and +8°C for a minimum of 6 months
Vaccine Vial Monitor (VVM): Proof of feasibility and intent to apply appropriate VVM if a tender requirement
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Copenhagen, Denmark 24 – 27 September 2018 Slide 21
Critical characteristics (2)
Antimicrobial preservative is required in ready to use injectable vaccines containing two-doses or in vaccines requiring reconstitution that are not live-attenuated
Dose volume of injectable vaccines can be delivered using available PQed auto-disable syringes
Vaccines in pre-filled injection devices should have an auto-disable feature
Packaging material can be disposed of appropriately in the field using standard procedures
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Copenhagen, Denmark 24 – 27 September 2018 Slide 22
Preferred characteristics (1)
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Copenhagen, Denmark 24 – 27 September 2018 Slide 23
Preferred characteristics (2)
• Ready to use vaccines
• Multicomponent vaccine presentations minimise potential for
error
• Antigenic stability following reconstitution
• Minimise number of doses that cannot be reused in
subsequent sessions once the container is open
• ≤10 doses per vial in routine setting ; ≥10 doses per vial in
campaign setting
• Doses per secondary container reflect logistical needs
• Small volume per dose in secondary container
• Small, standardised dose volumes for oral vaccines
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Copenhagen, Denmark 24 – 27 September 2018 Slide 24
Preferred characteristics (3)
• Increased thermostability
• No freeze sensitivity
• Minimise environmental impact of packaging
• Compact pre-filled auto-disable injection system
• Labelling legibility
• Barcoding
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Copenhagen, Denmark 24 – 27 September 2018 Slide 25
http://www.who.int/immunization_standards/vaccine_quality
/pspq2_v140512.pdf
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Copenhagen, Denmark 24 – 27 September 2018
Thank you