production and process validation 17 january 2006 by...wiriya charoenkunathum

Production and Process validation

17 January 2006

by...Wiriya charoenkunathum

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References:

• GMP for pharmaceutical products: main principles; WHO TRS No. 908,2003

• GMP for biological products; WHO TRS No.822,1992

• A WHO guide to GMP requirements, part 2:validation; WHO,1997

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GMPGMP

• The good practices outlined are to be considered general guides and they may be adapted to meet individual needs.

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GMPGMPare aimed primarily at diminishing the

risks inherent in any pharmaceutical production

• Cross –contamination; unexpected contaminants

• Mix-ups; confusion (false labels)

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Good practices in productionGood practices in production• Principle: production operations must

follow clearly defined procedures in accordance with manufacturing and marketing authorizations, with the objective of obtaining products of the requisite quality.

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Production of Vaccine

Master seed Working seed

Inoculum

Single harvest

Pool/Concentrated material

Purified/Bulk material

Final bulkFinal lot

Media/Cell cultureExcipients

Validation

- process

- method

Stability studies

GMP

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Good practices in Good practices in production:production:GeneralGeneral

• All handling of materials and products;– receipt– cleaning– quarantine– sampling– storage– labelling– dispensing– processing– packaging– distribution

• should be done in accordance with written procedures and recorded.

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• Any deviation from instructions or procedures should be avoid as far as possible.– If deviations occur: should be done in

accordance with an approved procedure– approved in writing by a designated person

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• Checks on yields and reconciliation of quantities to ensure that there are no discrepancies outside acceptable limits.

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• Operation on different products should not be carried out simultaneously or consecutively in the same room or area unless there is no risk of mix-up or cross-contamination.

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• At all time during processing– all materials– bulk containers– major items of equipment– rooms – packaging lines

• being used should be labeled or identified

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• Access to production premises should be restricted to authorized personnel.

• Non-medicinal products should not be produced in areas or with equipment destined for the production of pharmaceutical products.

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• In-process controls are usually performed within the production area.– The performance should not have any

negative effect on the quality of the product or another product.

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Good practices in production: Prevention of cross-contamination during production

When dry materials and products are used in production, special precaution should be taken to prevent the generation and dissemination of dust.– proper air control e.g. supply and extraction of air of

suitable quality

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Contamination of a starting material or of a product by another material or product must be avoid.

– accidental cross-contamination arises from uncontrolled release of dust, gases, particles, vapours. sprays or

organisms from materials and products in process residues on equipment intruding insects operators’ clothing, skin, etc.

– most hazardous, highly sensitizing materials living organisms, hormones, cytotoxic substances, and others

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Avoided by taking appropriate technical e.g.– carrying out production in dedicated and self-contained

areas– conducting campaign production followed by

appropriate cleaning in accordance with a validated cleaning procedure

– providing appropriately designed airlocks, pressure differentials and air supply and extraction systems

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minimizing the risk of contamination caused by recirculation or re-entry of untreated or insufficiently treated air

wearing protective clothing using cleaning and decontamination procedures of known

effectiveness using a closed system in production testing for residues using cleanliness status labels on equipment

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Measures to prevent cross-contamination and their effectiveness should be checked periodically according to SOP

Production areas periodic

environmental monitoring

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Good practices in production: Processing operations

Before any processing operation work area and equipment

• clean and free from any starting materials, products, product residues, labels or documents not required for the current operation

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Any necessary in-process controls and environmental controls should be carried out and recorded

Indicate the failures of equipment or services (e.g. water, gas) to equipment defective EQ withdrawn after use, production EQ

• cleaned without delay,• stored under clean and dry conditions in separate area

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Time limits for storage of EQ after cleaning and before use

Containers for filling should be cleaned before filling

Any significant deviation from the expected yield recorded and investigated

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Checkspipelines and other pieces of EQ used for

transportation of products Pipe used for conveying distilled or

deionized water sanitized and stored according to written

procedures (action limits for microbiological contamination and measures

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EQ and instruments serviced and calibrated at prespecified interval records maintained checked daily or prior to use clearly indicated the date of calibration and

servicing, recalibration (label attached to instrument)

Repair and maintenance operations not present any hazard to the quality of the

products

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GMP for biologicalGMP for biological productsproducts :Production :Production

• SOP for manufacturing operations: available, up date

• Starting material: source, origin, method of manufacture, QC

• Media and culture shall be added to fermenter and other vessels under carefully controlled conditions, avoid contamination

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• Media should be sterilized in situ. In line sterilizing filters for routine addition of gases, media, acids, alkalis, deforming agents, etc. to fermenter should be used where possible.

• Validation of sterilization.• Inactivation process: measures should be

taken to avoid risk of cross-contamination between treated and untreated products.

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• A wide equipment used for chromatography– should be dedicated to purification of one

product– should be sterilized or sanitized between

batches– define the life span of columns and the

sterilization method

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• In-process controls play a specially important role in ensuring the consistent quality of biological products because certain deficiencies may not be revealed by testing the finished product.– Tests that are crucial for quality control but

that cannot be carried out on the finished product shall be performed at an appropriate stage of production.

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• Samples of intermediate and final products shall be retained in sufficient amount and under appropriate storage conditions to allow the repetition or confirmation of a batch control.

• Certain operations require the continuous monitoring of data during a production process e.g.monitoring and recording of physical parameters during fermentation.

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Validation: Definition

Validation is the documented act of proving that any procedure, process, equipment, material,activity or system actually leads to the expected result.

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Validation studies

analytical test equipment facility systems (air, water, steam, process;

manufacturing processes, cleaning, sterilization, sterile filling, lyophilization)

Separate validation for

lyophilizer/ lyophilization process cleaning of glassware/ cleaning of facility sterilization process/ sterility test

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Validation studies

verify the system under test under the extremes expected during the process to prove that the system remains in control.

Critical equipment and processes are routinely revalidated at appropriate intervals to demonstrate that the process remains in control.

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Type of validation Prospective

• pre-planned protocol Concurrent

• base on data collected during actual performance of a process already implemented in a manufacturing facility

• suit manufacturers of long standing, have well-controlled manufacturing process

Retrospective • for production for a long time, but has not been validated

according to a prospective protocol and concurrent validation is not realistic option

• is not generally accepted

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Type of validation

Laboratory-and pilot-scale validations• some production processes cannot be carried out

in production facility

removal of impurities by individual purification steps in process

- not acceptable to bring unacceptable impurities (endotoxin, unwanted protein, contaminating bacteria and virus) spike into process

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Facility systems and equipment: Stage of validation

Design qualification (DQ) Installation Qualification (IQ) Operational Qualification (OQ) Performance Qualification (PQ)

Systems and EQ; PQ=validation

Depending on the function and operation of some EQ

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Facility systems and equipment

Design qualification (DQ)• necessary when planning and choosing EQ or

systems to ensure that components selected will have adequate capacity to function for the intended purpose, and will adequately serve the operations or functions of another piece of EQ or operation.

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Installation Qualification (IQ)• written for critical processing EQ and systems

• list all the identification information, location, utility requirements, and any safety features of EQ

• verify that the item matches the purchase specifications

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Operational Qualification (OQ)• outlines the information required to provide evidence that all

component of a system or of a piece of EQ operate as specified.

• should provide a listing of SOPs for operation, maintenance and calibration

• define the specification and acceptance criteria

• include information on EQ or system calibration, pre-operational activities, routine operations and their acceptance criteria

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Facility systems and equipment Performance Qualification (PQ)

• performed after both IQ and OQ have been completed, reviewed and approved

• describes the procedures for demonstrating that a system or piece of EQ can consistently perform and meet required specification under routine operation and, where appropriate, under worst case situations

• include description of preliminary procedures required, detailed performance tests to be done, acceptance criteria

• other supporting EQ used during qualification have been validated.

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pH meter, incubator, centrifuge, freezer; IQ,OQ

system: air (HVAC), compressed air, pure steam, raw steam, purified water, WFI, central vacuum; IQ, OQ, PQ

EQ: autoclave, oven, lyophilizer, continuous flow centrifuge; IQ, OQ, PQ

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Process validation

A process is a series of interrelated functions and activities using a variety of specified actions and EQ which is designed to produce a defined result.

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Process validation studies

examine a process under normal operating conditions to prove that the process is in control

re-validation modification to the process problems occur EQ or systems are changed

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Process validation

To validate the reproducibility and consistency of a process full defined process is carried out using validated EQ at least 3 times, under established procedure process must successfully and consistently meet all acceptance

criteria at all steps throughout the procedure at least 3 times consecutively

Validated process

Worst case: to ensure that process is acceptable in the extreme case

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Process validation Example

cleaning sanitization fumigation depyrogenation sterilization sterile filling fermentation bulk production purification inactivation filling, capping, sealing lyophilization

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Process validation

specific process clearly described in Master formula or in SOP all EQ; identity, code number, construction, operation

capacity, actual operating range processing parameter; sufficiently detailed to permit

complete reproducibility (time period, pH, volume, temp.etc.)

specification at each step

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Process validation

Very important specifications for a process undergoing validation be

pre-determined all critical processing parameters for which

specifications have been set, there must be equipment to measure all of those parameters during the validation study

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Typical content requirements for process validations

Cleaning, Fumigation, Sanitization Process collecting liquid and swab

samples for testing of residual product residual protein endotoxin tests microbial tests (bioburden) chemical tests (chlorine and

phosphoric acid) residual cleaning agents conductivity tests pH

As relevant to the cleaning process

All analytical tests must be validated before

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Sterilization sterilization filtration of solutions

microbial challenge filter integrity tests performance tests

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Depyrogenation process (dry heat, column chromatography, other) endotoxin content reduction of 3 logs

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Sterile filling test filling process perform filling process with nutrient media run at full scale for at least one fill size worst case; large volume and number of vials filled vials incubated, observed and test for contamination by

validated sterility test must be sterile for 3 consecutive runs media fill performed twice a year size of run must be large enough to detect low levels of

contamination e.g. contamination rate of 1/1000, 3000 units are needed to provide 95% confidence

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Mock fermentation full scale fermentation of a representative fermentation

process to validate the parts of process involving connections,

sampling, and additions of nutrients etc. fermentor prepared and operated in simulated process with

uninoculated nutrient media process follow the full fermentation process 3 consecutive runs at each stage

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Production processes(fermentation, bulk production, purification, filling, lyophilization) run according to approved Master formula including all

raw material, personnel, equipment, and facility preparations, in-process tests, processing, through to final testing of the batch lot.

all facility systems must be monitored 3 consecutive lots must be produced and all facility,

EQ, support systems, product spec, and process being validated must pass at all steps

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Validation: Type of Documentation

Validation master plan (VMP) Validation protocol (VP) Validation reports (VR) Standard operating procedures (SOPs)

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Master validation plan (MVP)

is a document pertaining to the whole facility that describes which EQ, systems, methods and processes will be validated and when they will be validated.

provide the format required for each particular validation document (IQ, OQ, PQ for EQ and systems; process validation, analytical assay validation)

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indicate what information is to be contained within each document

indicate why and when revalidations will be performed

who will decide what validations will be performed

order in which each part of the facility is validated

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indicate how to deal with any deviations state the time interval permitted between

each validation

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Validation: VMP

Enables overview of entire validation project List items to be validated with planning

schedule as its heart like a map

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Validation: In summary, VMP should contain at least

Validation policy Organizational structure Summary of facilities, systems, equipment,

processes to be validated Documentation format for protocols and reports Planning and scheduling Change control Training requirements

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Validation: Protocol

Objectives of the validation and qualification study

Site of the study

Responsible personnel

Description of the equipment

SOPs

Standards

Criteria for the relevant products and processes

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Validation: ReportValidation: Report

TitleTitle objective of the studyobjective of the study Refer to the protocolRefer to the protocol Details of materialDetails of material EquipmentEquipment Programmes and cycles useProgrammes and cycles use Details of procedures and test methodsDetails of procedures and test methods

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Validation: changes that require revalidation

Software changes; controllers Site changes; operational changes Change of source of material Change in the process Significant equipment changes Production area changes Support system changes

production and process validation 17 january 2006 by...wiriya charoenkunathum

Documents

production contamination

production area

good practices

production premises

production operations

production principle

suitable quality slide

designated person slide