Guidance for Industry
Content and Format of Chemistry,
Manufacturing and Controls
Information and Establishment
Description Information for a Vaccine
or Related Product
Additional copies are available from:
Office of Communication, Training and Manufacturers Assistance (HFM-40)
1401 Rockville Pike, Rockville, MD 20852-1448
(Tel) 800-835-4709
or 301-827-1800
(Internet) http://www.fda.gov/cber/guidelines.htm
U.S. Department of Health and Human Services
Food and Drug Administration
Center for Biologics Evaluation and Research (CBER)
January 1999 Table of Contents
Note: Page numbering may vary for documents distributed electronically.
GENERAL INFORMATION 1
I. BACKGROUND 1
II. DEFINITIONS 1
PART 1  CHEMISTRY, MANUFACTURING AND CONTROLS SECTION 2
I.   DRUG SUBSTANCE 2
      A.  Description and Characterization 2
1. Description 3
2. Characterization  3
a. Physicochemical Characterization 3
b. Biological Activity 4
B. Manufacturer 4
1. Identification 4
2. Floor Diagram(s) 4
3. Manufacture of Other Products 5
4. Contamination Precautions 5
C. Method of Manufacture 6
1. Raw Materials 6
2.  Flow Charts 6
3.  Detailed Description 7
a.   Animal Sources (including fertilized avian eggs) 7
b.  Virus Sources 7
c. Cellular Sources   7
i. Microbial Cells   8
ii. Animal Cells   8
iii. Genetic Constructs and Recombinant Cell Lines   9
iv. Cell Bank System  10
v. Cell Growth and Harvesting  12
d. Purification and Downstream Processing 14
i.   Inactivation  14
ii.  Purification  14
iii.  Stability Processing   15
iv.  Detoxification   15
e. Synthetic Drug Substance  15
i. Synthetic Peptides 16
  ii. Conjugates and Modified Drug Substance   16
4. Batch Records   17
i D. Process Controls 17
1.  In-process Controls   17
2.  Process Validation   17
a.   Propagation   17
b.  Harvest 17
c.   Inactivation 17
d.  Purification   18
e. Microbiology  18
3.  Control of Bioburden    18
E.  Manufacturing Consistency   18
1.  Reference Standards 18
2.  Release Testing 19
F. Drug Substance Specifications 19
1.  Specifications  19
2.  Impurities Profile  19
G.  Reprocessing 19
H.  Container and Closure System   20
I.   Drug Substance Stability   20
II. DRUG PRODUCT   20
A. Composition and Characterization 20
1.  Composition  20
a.   Drug Substance(s)   20
b.  Excipient  21
c.   Adjuvant  21
d.  Preservative  21
2.  Specifications and Analytical Methods for Drug Product Ingredients   21
a.   Description  21
b.  Identity   21
c.   Purity and Impurities   22
d.  Potency   22
B.  Manufacturer and Facilities   22
C.  Manufacturing Methods  22
D. Drug Product Specifications 22
1. Sampling Procedures  22
2. Specifications and Methods   23
3. Validation Results  23
E.  Container and Closure System   23
F. Microbiology 23
G. Lyophilization 23
H.  Drug Product Stability   23
1.  Stability Protocol 24
2.  Stability Data 24
3.  Stability Program 24
ii III.INVESTIGATIONAL FORMULATION   24
IV.ENVIRONMENTAL ASSESSMENT   25
V. METHOD VALIDATION 25
PART 2  ESTABLISHMENT DESCRIPTION SECTION 25
I. INTRODUCTION 25
II. GENERAL INFORMATION 25
III.SPECIFIC SYSTEMS 26
A. Water Systems 26
1. General Description   26
2.  Validation Summary 26
3. Routine Monitoring Program  26
B. Heating, Ventilation, and Air Conditioning Systems (HVAC) 26
1. General Description   26
2. Validation Summary   26
3. Routine Monitoring Program   27
C. Computer Systems 27
IV.CONTAMINATION/CROSS CONTAMINATION ISSUES 28
A. Cleaning procedures and validation 28
1. Dedicated Equipment 28
2. Shared Equipment 28
B.  Containment features 28
APPENDIX A 29
iii Guidance for Industry:1
Content and Format of Chemistry, Manufacturing and Controls
Information and Establishment Description Information for a
Vaccine or Related Product
GENERAL INFORMATION
I.  BACKGROUND
In the Federal Register of July 8, 1997, the Food and Drug Administration announced the
availability of Revised Form FDA 356h, "Application to Market a New Drug, Biologic, or an
Antibiotic for Human Use.  This document provides guidance on the content and format of the
Chemistry, Manufacturing, and Controls (CMC) and Establishment Description sections of a
License Application for a vaccine or related product.  Reagents for in vitro diagnostic use are
outside the scope of this document.
II.  DEFINITIONS
Vaccine or Vaccine Related Product
A vaccine is an immunogen, the administration of which is intended to stimulate the immune
system to result in the prevention, amelioration or therapy of any disease or infection.  A
vaccine may be a live attenuated preparation of bacteria, viruses or parasites, inactivated (killed)
whole organisms, living irradiated cells, crude fractions or purified immunogens, including those
derived from recombinant DNA in a host cell, conjugates formed by covalent linkage of
components, synthetic antigens, polynucleotides (such as the plasmid DNA vaccines), living
vectored cells expressing specific heterologous immunogens, or cells pulsed with immunogen.
It may also be a combination of vaccines listed above.  Prophylactic vaccines are not currently
recognized as specified biotechnology products in Title 21 Code of Federal Regulations (cid:31)601.2.
Vaccine related products include in vivo diagnostic antigens, other microbial derived proteins
such as asparaginase or toxins such as botulinum toxin.  A diagnostic antigen is a crude or
purified fraction isolated from microbial culture and intended for in vivo detection of an existing
specific immune response, usually by intradermal or percutaneous skin testing, e.g., histoplasmin
or coccidioidin.
                                               
1
This guidance document represents FDAs current thinking on the content and format of the Chemistry,
Manufacturing and Controls information and Establishment Description information for a vaccine or related
product.  It does not create or confer any rights for or on any person and does not operate to bind FDA or the
public.  An alternative approach may be used if such approach satisfies the requirements of the applicable statute,
regulations, or both.
1 Drug Substance
The drug substance is the unformulated active (immunogenic) substance which may be
subsequently formulated with excipients to produce the drug product. The drug substance may
be whole bacterial cells, viruses, or parasites (live or killed); crude or purified antigens isolated
from killed or living cells; crude or purified antigens secreted from living cells; recombinant or
synthetic carbohydrate, protein or peptide antigens; polynucleotides (as in plasmid DNA
vaccines); or conjugates.  For combination vaccines, each active substance, which will be
pooled, combined with other antigens and formulated, should be described.
Drug Product
The drug product is the finished dosage form of the product. The drug product contains the
drug substance(s) formulated with other ingredients in the finished dosage form ready for
marketing.  Other ingredients, active or inactive, may include adjuvants, preservatives,
stabilizers, and/or excipients.  For vaccine formulation, the drug substance(s) may be diluted,
adsorbed, mixed with adjuvants or additives, and/or lyophilized to become the drug product.
PART 1  CHEMISTRY, MANUFACTURING AND CONTROLS SECTION
I.  DRUG SUBSTANCE
Production of a drug substance, whether by fermentation, cultivation, isolation, or synthesis, usually
starts with raw materials.  Subsequent steps of the procedure involve preparation, characterization
and purification of intermediates eventually resulting in the drug substance.  The quality and purity
of the drug substance cannot be assured solely by downstream testing, but depends on proper
control of the manufacturing and synthetic process as well.  Proper control and attainment of
minimal levels of impurities depends on:
  appropriate  quality  and  purity  of  the  starting  materials,  including  the  seed  organisms,  and
reagents;
  establishment and use of in-process controls for intermediates;
  consistent adherence to validated process procedures; and
  adequacy of the final (release) control testing of the drug substance.
A.  Description and Characterization
This section should be completed for each drug substance identified as being present in the final
drug product. For combination vaccines, referencing the approved license application may be
acceptable.
2 1.  Description
This section should contain a clear description of the drug substance.  The biological name
(including strain and/or clone designation) or chemical name, including any established
USAN name, should be provided.  The description should also include the source of the
cells, including microbes, from which the drug substances were derived, the active
components of the cell fractions or purified antigens, and the physical and chemical
properties of the synthetic drug substance.  Any chemical modification or conjugation of the
drug substance should be described in detail.  Also, a list of any inactive substances, which
may be present in the drug substance, should be provided.
2.  Characterization
This section should contain a description of all analytical testing performed to characterize
the drug substance with respect to identity, purity, potency, and stability.  (See references 2,
3, 7, 11-17, 19, 21).  Test results should include actual data such as tabular data, legible
copies of chromatograms or spectra, photographs of gels or immunoblots, actual histograms
of cytometric analysis, or other appropriate formats.  Data should be well organized and
fully indexed to enable easy access.  Results for quantitative assays should be presented as
actual data, not generally as "Pass" or "Fail."  Some tests listed below may not be necessary
or applicable for all substances.
a.  Physicochemical Characterization
In general, characterization may include, but is not limited to the following:
  UV/visible or mass spectrometry;
  amino acid analysis;
  amino acid or nucleic acid sequencing;
  carbohydrate analysis and, if appropriate, sequencing;
  peptide mapping;
  determination of disulfide linkage;
  Sodium Dodecyl Sulfate-Polyacrylamide Gel Electrophoresis (SDS-PAGE) (reduced
and non-reduced);
  isoelectric focusing (1D or 2D);
  various chromatographic methods such as HPLC, GC, LC, or thin layer
chromatography;
  nuclear magnetic resonance spectroscopy; and/or
  assays to detect related proteins including deamidated, oxidized, processed, and
aggregated forms and other variants, such as amino acid substitutions and
adducts/derivatives, and other process contaminants such as sulfhydryl reagents,
urea, residual host proteins, residual DNA, and endotoxin.
3 Additional physicochemical characterization may be required for modified drug
substances such as conjugates, multiple antigen peptides (MAP), or those undergoing
further chemical or enzymatic modifications. The information provided should include
the degree of derivatization or conjugation, the amount of unmodified substance,
removal of free materials (e.g., toxins, linkers, etc.), and the stability of the modified
substance.
b.  Biological Activity
Further characterization of vaccines may include, but is not limited to the following:
  specific identity testing such as Western blot analysis or ELISA;
  cytometric analysis;
  neurovirulence testing, if appropriate;
  serotyping;
  electrophoretic typing;
  inactivation studies;
  neutralization assays; and
  titrations.
A description and results of all relevant in vivo and in vitro biological testing (bioassays)
performed on the manufacturers reference standard lot or other relevant lots to
demonstrate the potency and activity(ies) of the drug substance should be provided.
This section should include a complete description of the protocol used for each
bioassay, the control standards used, the validation of the inherent variability of the test,
and the established acceptance limits for each assay.  The characteristics of specific
antibodies used in the immunochemical or serological assays should also be included.
B.  Manufacturer
1.  Identification
The application should include the name(s), address(es), FDA registration number, and
other pertinent organizational information for each manufacturer responsible for any portion
of the manufacture or testing operations for the drug substance.  This may include
independent contractors or other company subsidiaries serving as contractors, or other
locations/sites owned and operated by the applicant.  Also included in this section should be
a discussion of the operations performed by each party and the responsibilities delegated to
each party by the applicant.
2.  Floor Diagram(s)
For each manufacturing location, a simple floor diagram of the general layout of the
facilities, which traces the drug substance through the manufacturing process should be
4 included.  This diagram need not be a detailed engineering schematic or blueprint, but rather
a simple drawing that clearly depicts the relationship of each manufacturing area, suite, or
room to the others.  The uses made of adjacent areas that are not the subject of the
application should also be included.  The diagrams should be sufficiently clear to enable
visualization of the production flow and to identify adjacent operations that may create
particular concerns, e.g., the proximity of live viral cultures to inactivated intermediates or
final products, segregation of animal facilities, etc.  Room numbers or other unique
identifiers should be clearly indicated.  Reference can be made to the manufacturing flow
chart in section I.C.2.
3.  Manufacture of Other Products
A comprehensive list of all additional products that are manufactured or manipulated in the
same areas used to produce the drug substance that is the subject of this application should
be provided.  This section should include a brief description of the type and developmental
status of the additional drug substances/products and indicate the areas into which these
other products will be introduced, whether on an ongoing or campaign basis, and what
manufacturing steps will be performed in the multiple-use area(s).  Also, the applicant
should indicate whether the production of other products will utilize the same product
contact equipment and, if so, how that equipment will be cleaned and validated between
operations for the manufacturing of different products.  Data should be provided for the
validation and cleaning in the appropriate section.
4.  Contamination Precautions
For all areas in which operations for the preparation of cell banks and product
manufacturing are performed, including areas for the handling of animals used in production,
the following information concerning precautions taken to prevent contamination or cross-
contamination, should be provided:
  air quality classification of a room or area in which an operation is performed, as
validated and measured during operations;
  a brief, narrative description of the procedures and/or facility design features for the
control of contamination, cross contamination, and containment (air pressure cascades,
segregation of operations and product, etc.) - this is of particular importance for multi-
use areas or for work with live organisms;
  general equipment design description, e.g., does design represent an open or closed
system or provide for a sterile or non-sterile operation; and
  a description of the in-process controls performed to prevent or to identify
contamination or cross contamination.  The manipulation of more than one cell line in a
single area, or the use of any piece of equipment for more than one cell line, should be
indicated and measures to ensure prevention of cross contamination should be discussed.
5 C.  Method of Manufacture
This section should be completed for each drug substance described in I.A.  A detailed
description of the manufacturing and controls should be provided to demonstrate proper quality
control and prevention of possible contamination with adventitious agents.  The inclusion of a
list of all relevant SOPs is recommended; however, actual copies of the SOPs are not required.
1.  Raw Materials
 
 A list of all materials (culture media, buffers, resins for peptide synthesis, chemicals, columns,
etc.) used in the manufacture of  the drug substance, and their tests and specifications, or
reference to official compendia, should be provided.  For purchased materials, representative
certificates of analysis from the supplier(s) and/or manufacturers acceptance criteria should
be provided.  Redundant testing at the purchasing manufacturer may not be necessary if the
testing methods at the vendor are approved by the purchasing manufacturer.  Custom
reagents, such as monoclonal antibodies, enzymes, other proteins, uncommon amino acids
and derivatives, or glycolipids, used in purification or production of the drug substance,
should be described in detail, including identification of the vendor/supplier, specificity, and
origin, including the manufacturing scheme, if applicable (references 3, 11, 14, 16).  Results
of adventitious agent testing of raw materials used in propagation, e.g., serum, trypsin,
should be provided.  Process gases (compressed air, carbon dioxide, nitrogen) and water are
considered raw materials.  This list should be referenced in parts of the Application which
provide detailed descriptions of the use of each component (see I.C.4, Batch Records).
2.  Flow Charts
In this section, a complete visual representation of the manufacturing process flow should
be provided for each drug substance. For multiple drug substances prepared from a single
strain, a common flow chart is acceptable, through the propagation and harvest cycle, with
indications of where the processing diverges.  This flow chart should show the steps in
production, equipment and materials used, room or area where the operation is performed
(may reference diagrams in other sections of the application), and a complete list of the in-
process controls and tests performed on the product at each step.  In-process holding
steps should be included, with time and temperature limits indicated.  For chemical
synthesis, a flow chart should include all the steps in a general synthesis cycle with other
specific steps, such as fragment condensation or peptide cleavage, indicated.  This diagram
should also include information (or be accompanied by a descriptive narrative) on the
methods used to transfer the product between steps, (e.g., open transfers under laminar
flow units).  Such transfers should be described for movement of product between
equipment, areas, rooms, buildings and sites.  Manufacturing steps which are computer
controlled should be identified.  Reference may be made to other sections of the
application for more detailed process information.  If equipment is dedicated to specific
areas or products, it should be identified.
6 3.  Detailed Description
a.  Animal Sources (including fertilized avian eggs)
Detailed information on any animals used for the propagation of microorganisms, or
production of recombinant proteins (reference 12), for use as vaccines should include,
but is not limited to:
  the species and age of the animals;
  the health status of the animals, e.g., specific pathogen free;
  the results of adventitious agent screening;
  the animal husbandry practices, e.g., quarantine procedures, used to ensure the
suitability of the animals;
  the veterinary and laboratory monitoring used to ensure the suitability of the animals;
  a description of the inoculation of the animals; and
  a description of the tissues harvested and the method of harvest.
b.  Virus Sources
This section should include a detailed description of the virus seed used for vaccine
production.  The information submitted should include, but is not limited to:
  the original source of the virus
  the passage history of the virus strains
  details of the seed lot system
  the culture techniques for virus seed maintenance
c.  Cellular Sources
For the purposes of this document, cell substrate refers to microbial cells, or cells or cell
lines of animal (insect, as well as human and other mammalian) origin (references 13,
21).  Cell seed lot systems are frequently adopted for cells or cell lines, whether they are
used as vaccine components (whole cells or subunits), or as the cell substrate for
propagation of viruses, recombinant DNA products, or polynucleotide vaccine
constructs.  Details of the cell seed lot system should be submitted as explained in iv. of
this section.  The history and general characteristics of the cell lines should be provided.
All specific procedures used to generate the cell substrate should be well documented
and submitted as outlined in the following sections.  These may include, for example,
cell fusion, selection, transfection, colony isolation, cloning, gene amplification, and
adaptation to specific culture conditions or media.  The growth pattern and
morphological appearance of the cell lines, from the master cell bank to the end-of-
production cells, should be submitted.  A thorough discussion of the adventitious agent
profile of any cell substrate should be provided.
7 i.  Microbial Cells
This section should contain a description of the species, strain and known genotypic
and phenotypic characteristics of the microorganism from which the drug substance
is derived.  Microbial cells and their derivatives used as the vaccine drug substance
include whole cell vaccines (live or killed), crude lysate or purified immunogens,
recombinant DNA products, conjugates, and plasmid DNA vaccines.
The history and characteristics of each strain used to produce the product and a
complete strain description should be provided, including:
  origin of isolate;
  species;
  biochemistry (fermentation profile, etc.);
  strain identifier and specific identifying characteristics (serotype, etc.);
  virulence (attenuation method, if performed);
  genetic characterization, if known (markers, inserts, deletions, etc.);
  plasmids; and
  genetic stability.
ii.  Animal Cells
Cells of animal origin may harbor adventitious agents and consequently pose a
potentially greater risk to humans if not properly controlled(reference 21).  The
measures taken to remove, inactivate, or prevent contamination of the product from
any adventitious agent present in the cell substrate should be described.
Primary Cells
This category generally includes the primary cells and those used within the first
passage after establishment from the tissue of origin.  Consequently, primary
cells may not be amenable to the establishment of cell banks.  A discussion of the
rationale for the use of primary cells should be provided.  The information
submitted for each primary cell line used should include, but is not limited to:
  the species and age of the animals and the source tissue from which the cells
are derived;
  the health status of the animals from which the cells are derived, e.g., specific
pathogen free;
  the animal husbandry practices (quarantine, etc.) used to ensure the
suitability of the animals;
  the veterinary and laboratory monitoring used to ensure the suitability of the
animals;
  a description of the preparation of primary cell substrates; and
8   an explanation of the concurrent testing done to demonstrate the absence of
adventitious agents and the results of those tests.
Cell Lines
The production substrate may consist of a continuous cell line or diploid cell
strain of human or animal origin.  For human cell substrates, the source of cells
should be clearly described, including the materials and methods used, the tissue
or organ of origin, ethnic and geographical origin, age, gender and general
physiological condition.  The health or medical history of the donor, if known,
should be provided along with the results of any tests for pathogenic agents.  For
animal cell lines, relevant descriptions of the source may include species, strains,
breeding conditions, tissue or organ of origin, geographical origin, age, gender,
and general physiological condition of the original donor.  Testing for detection
of adventitious agents should be undertaken with consideration of the possible
agents which may be present in the cells.  Results of all testing should be
included.
iii.  Genetic Constructs and Recombinant Cell Lines
For recombinant DNA (rDNA) derived products and rDNA-modified cell substrates,
detailed information should be provided regarding the host cells, and the source and
function of the component parts of the recombinant gene construct (references 7,
13-16, 19, 21), including:
Host Cells
A description of the source, relevant phenotype, and genotype should be
provided for the host cell used to construct the biological production system.
The results of the characterization of the host cell for phenotypic and genotypic
markers, including those that will be monitored for cell stability, purity, and
selection should be included.
Gene Construct
A detailed description of the gene which was introduced into the host cells,
including both the cell type and origin of the source material, should be
provided.  A description of the method(s) used to prepare the gene construct
and a restriction enzyme digestion map of the construct should be included.
The complete nucleotide sequence of the coding region and regulatory
elements of the expression construct, with translated amino acid sequence,
should be provided, including annotation designating all important sequence
features.
9 Vector
Detailed information regarding the vector and genetic elements should be
provided, including a description of the source and function of the component
parts of the vector, e.g. origins of replication, antibiotic resistance genes,
promoters, enhancers.  A restriction enzyme digestion map indicating at least
those sites used in construction of the vector should be provided.  The genetic
markers critical for the characterization of the production cells should be
indicated.
Final Gene Construct
A detailed description should be provided of the cloning process which
resulted in the final recombinant gene construct.  The information should
include a step-by-step description of the assembly of the gene fragments and
vector or other genetic elements to form the final gene construct.  A restriction
enzyme digestion map indicating at least those sites used in construction of the
final product construct should be provided.
Cloning and Establishment of the Recombinant Cell Lines
Depending on the methods to be utilized to transfer a final gene construct or
isolated gene fragments into its host, the mechanism of transfer, copy number,
and the physical state of the final construct inside the host cell (i.e. integrated
or extrachromosomal), should be provided.  In addition, the amplification of
the gene construct, if applicable, selection of the recombinant cell clone, and
establishment of the seed should be completely described.
iv.  Cell Bank System
A description of the cell banking procedures used should be provided, including:
  the banking system used;
  the size of the cell banks;
  the container and closure system used;
  a detailed description of the methods, reagents and media  used for preparation
of the cell banks;
  the conditions employed for cryopreservation and storage;
  in-process controls; and
  storage conditions.
A description should be provided of the procedures used to avoid microbial
contamination and cross-contamination by other cell types present in the facility, and
the procedures that allow the banked cells to be traced.  A discussion of precautions
10 taken to prevent any catastrophic event that could render the cell banks unusable and
to ensure continuous production of vaccines, for example, storage of cell banks in
multiple freezers or at different sites, should be included.  The cell bank system
generally consists of two tiers: a Master Cell Bank (MCB), and a Working Cell Bank
(WCB) generated from the MCB for vaccine manufacturing.  In some instances,
another tier of Primary Cell Bank may be established which allows the
manufacturers to perform extensive testing on a pool of cryopreserved primary cells
prior to their usage in vaccine production.
Master Cell Bank
The cells comprising the MCB should be identified and a complete history and
characterization of the MCB should be provided, including, as appropriate for
the given cells:
  the biological or chemical method used to derive the cell bank;
  biochemistry (cell surface markers, isoenzyme analysis, specific protein or
mRNA, etc.);
  specific identifying characteristics (morphology, serotype, etc.);
  karyology and tumorigenicity;
  virulence markers;
  genetic markers;
  purity of culture; and
  media and components (e.g., serum).
For recombinant products, the cell substrate used to establish the MCB is the
transfected cell containing the desired genetic construct which has been cloned
from a single cell progenitor.  For non-recombinant products, the cell substrate is
the cell from the parental cell line chosen for preparation of the MCB without
further modification.  For a diploid cell line the population doubling level chosen
for the MCB should be given.
Working Cell Bank
This section should contain a description of the procedures used to derive a
WCB from the MCB.  The description should include the identification system
used for the WCB as well as the procedures for storage and cataloging of the
WCB.  The assays used for qualification and characterization of each new WCB
should be included with the results of those assays for the WCB currently in use.
If applicable, a description of animal passage of the WCB performed to assure
the presence of virulence factors which are protective antigens should be
supplied.  This section should also contain a description of the methods and
procedures used to assure culture purity and identity.
11 End of Production Cells (EPC)
For r-DNA derived drug substances, a detailed description of the
characterization of the EPC that demonstrates that the biological production
system is consistent during growth should be provided.  The results of the
analysis of the EPC for phenotypic or genotypic markers to confirm identity
and purity should be included.  This section should also contain the results of
testing supporting the freedom of the EPC from contamination by adventitious
agents.  The results of restriction enzyme analysis of the gene constructs in the
EPC should be submitted.  Further guidance can be obtained from the ICH
document on "Analysis of the Expression Construct in Cells Used for
Production of R-DNA Derived Protein Products.
Characterization and Testing of Cell Banks
Detailed information on the characterization and testing of banked cell substrates
should be submitted (references 7, 13-16).  This should include the results of
testing to confirm the identity, purity, and suitability of the cell substrate for
manufacturing use.  Relevant tests should be described in the Application, along
with the results of the testing.  In general, the methods described in Section
I.A.2.a. are considered adequate tests to confirm the identity and purity.  For
metazoan cells, results of tests for the presence of bioburden (bacteria and fungi)
and mycoplasma should be submitted for the MCB and WCB.  The results of
virus testing of metazoan cell substrates to detect possible contaminating viruses,
using appropriate screening tests designed to detect a wide spectrum of viruses
and relevant specific tests based on the cultivation history of the cell line, should
be submitted.  Further guidance may be obtained from the Points to Consider in
the Characterization of Cell Lines Used to Produce Biologicals, 1993.
v.  Cell Growth and Harvesting
This section should contain a description of each of the following manufacturing
processes, as appropriate.  The description should contain sufficient detail to support
the consistency of manufacture of the drug substance.  It is understood that all of the
processes listed below may not be performed on every drug substance, or be
performed in the order given.  A description of the assignment of batch numbers and
how each batch of a stabilized intermediate containing multiple drug substances can
be related to its component harvests and batches of individual drug substances
should be included.
Propagation
This section should contain descriptions of:
12   each step in propagation from retrieval of the WCB to culture harvest (stages
of growth);
  the media used at each step (including water quality), with details of their
preparation and sterilization;
  the inoculation and growth of initial and sub-cultures, including volumes,
time and temperature of incubation(s);
  how transfers are performed;
  precautions taken to control contamination;
  in-process testing which determines inoculation of the main culture system;
  in-process testing to ensure freedom from adventitious agents, including tests
on culture cells, if applicable;
  the nature of the main culture system including operating conditions and
control parameters (e.g., temperature of incubation, static vs. agitated,
aerobic vs. anaerobic, culture vessels vs. fermenter, volume of fermenter, or
number and volume of culture vessels);
  the parallel control cell cultures, if applicable, including number and volume
of culture vessels;
  induction of antigen, if applicable; and
  the use of antibiotics in the medium and rationale, if applicable.
A brief description of all process parameters which are monitored and a typical
growth curve or growth description (see Process validation, I.D.2) should be
provided.  A list of in-process controls and testing for purity, viability, antigen
yields, and phenotypic identity; as well as the time points at which testing is
performed should be included in both the Flow Chart (Section I.C.2.) and the
Batch Records (Section I.C.4.).  A description should be provided of the
precautions taken to control contamination, e.g., during sample removal and
transfers, and whether these are "closed" or "open" procedures.
Harvest
A description of the method(s) used for separation of crude drug substance from
the propagation system (precipitation, centrifugation, filtration, etc.) should be
provided.  Brief descriptions should be given for the following:
  the process parameters monitored;
  the criteria for harvesting;
  the determination of yields; and
  the criteria for pooling more than one harvest, if applicable.
This section should include a working definition of a harvest "batch."  A
description should be provided of the precautions taken to maintain aseptic
conditions and prevent contamination during harvesting.  A description of the
procedures used to monitor bioburden (including acceptance limits) or sterility
should be included.  If the harvested crude drug substance is held prior to further
13 processing, a description of storage conditions and time limits should be
provided.
d.  Purification and Downstream Processing
This section should contain a description of the methods and materials by which
intermediate forms and the final bulk of the drug substance are separated and
concentrated from the cells, media, solvents or solutions used in the production process.
The description of each step of the purification process should also include the
accompanying analytical tests developed or adopted by the manufacturer to show
identity, purity, and concentration, and the levels of product related and non-product
related impurities.  This is particularly important if the latter materials are determined to
be toxins, carcinogens, teratogens, or allergens.  Antibiotics and other components (e.g.,
growth factors, antibodies) used in the culture but neither required nor specifically
intended to be in the final vaccine product should be removed before use.  Procedures to
assure containment and prevention of contamination or cross contamination should be
provided.
i.  Inactivation (if appropriate)
Descriptions should be provided for:
  how culture purity is verified before inactivation;
  the method(s) and agent(s) used for inactivation;
  the method(s) undertaken to prevent aggregation and assure homogeneous
access of inactivating agent(s).
  the stage in production where inactivation or killing is performed; and
  the parameters which are monitored.
Verification of the adequacy of and margin of safety achieved by the method of
inactivation or killing should be provided (see I.D.2., Process Validation).
ii.  Purification (if appropriate)
This section should contain an explanation of the objectives and rationale for
purification of component antigens from crude harvest.  Descriptions should be
provided for:
  the methods used, including specialized equipment such as columns;
ultracentrifugation, ultrafiltration, and custom reagents such as monoclonal
antibodies;
  the process parameters monitored;
  the determination of yields;
  in-process testing (e.g., sensitivity and specificity of ELISA);
  the criteria for pooling more than one batch, if applicable;
14   sterility or bioburden monitoring and the precautions taken to prevent
contamination during purification;
  the reuse and/or regeneration of columns and adsorbents; and
  monitoring for residual impurities and leachable reagents.
A list of in-process controls and tests for purity, identity, and biological activity
should be provided.  The time points at which testing is performed should be
included in both the Flow Chart (Section I.C.2) and the Batch Records (Section
I.C.4.).  A list of the final acceptance criteria for the purified drug substance should
be provided.  If the purified drug substance is held prior to further processing, a
description of the storage conditions and time limits should be included.  Verification
of the stability of the purified substance under the conditions described should be
included (see I.D.2, Process Validation).
iii.  Stability Processing
A description should be provided for any post-purification steps performed to
produce a stabilized intermediate, (e.g., adsorption, addition of stabilizers, addition
of preservatives, lyophilization (in bulk), desiccation), and the objectives and
rationale for performing each process.  A description of precautions taken to
monitor bioburden and prevent contamination during these processes should also be
given.  If the stabilized intermediate is held prior to further processing, a description
of storage conditions and time limits should be included.  Verification of the stability
of the drug substance under the conditions described should be provided (see I.D.2,
Process Validation).
iv.  Detoxification
For toxoid or toxoid-containing vaccines, the detoxification procedures should be
described in detail for the toxin component(s):
  the method(s) and agent(s) used for detoxification;
  the stage in production where detoxification is performed; and
  the parameters which are monitored.
Verification of the adequacy of the method for detoxification should be provided
(see I.D.2, Process Validation).
e.  Synthetic Drug Substance
For the purposes of this guidance, synthetic drug substance includes: linear or complex
synthetic peptides, or modified synthetic or semi-synthetic immunogens such as
lipopeptides, peptide to carrier protein or polysaccharide to carrier protein conjugates.
15 i.  Synthetic Peptides
The detail of the peptide synthesis including purification procedures should be
provided as outlined in the Guidance for Industry for the Submission of Chemistry,
Manufacturing, and Controls Information for Synthetic Peptide Substances.
ii.  Conjugates and Modified Drug Substance
This section of the guidance refers to drug substances derived from another drug
substance or intermediate through chemical or enzymatic modification, e.g.,
conjugation of an immunogen to a carrier molecule, enzymatic or chemical cleavage
and purification of the non-toxic subunit of a toxin, or derivatization.  The
modification may change the fundamental immunogenicity, toxicity, stability, or
pharmacokinetics of the source drug substance.  The derived drug substance may
include linking moieties and new antigenic epitopes.
Manufacturing Methods
This section should provide a detailed description of:
  the specifications and acceptance criteria, for the native drug substance
starting materials, which assure suitability for conjugation or modification;
  the conditions of all reactions and/or syntheses used to produce a semi-
synthetic conjugated molecule, derivatized molecule, or subunit, including
intermediate forms of the reactants and drug substance; also include the
process parameters which are monitored, in-process controls, testing for
identity and biologic activity, and any post-purification steps performed to
produce a stabilized derived drug substance.
The application should include a description of the methods and equipment used
for separation of unreacted materials and reagents from the conjugate, derivative,
or subunit, and a rationale for the choice of methods.
Specifications
Specifications should be provided for each modified drug substance, including
identity, purity, potency, physical-chemical measurements, and measures of
stability.  If test results for the derived substance will be reported for final release
of the drug product, a validation report, to include estimates of variability and
upper and lower limits, should be provided for each specification.  Specifications
should include the amount of unreacted starting materials and process reagents
unless their removal has been validated.
16 4.  Batch Records
A completed (executed) representative batch record of the process of production of the
drug substance should be provided.
D.  Process Controls
1.  In-process Controls
For all in-process testing indicated in the Flow Charts, a brief description of the sampling
procedures and the test methods used should be provided.  For testing performed at
significant phases of production, the criteria for accepting or rejecting an in-process batch
should be specified.
2.  Process Validation
A summary report, including protocols and results, should be provided for the validation
studies of each critical process or factor that affects drug substance specifications, i.e., a
decision to accept or reject a batch (see Guideline on General Principles of Process
Validation, 1987" and references 2, 3, 7, 12, 14, 16, 17).  The validation study reports with
statistical rigor should document the variability in each process as it relates to final
specifications and quality.
a.  Propagation
A growth curve or tabular representation of growth characteristics for each propagation
step, based on historical performance under specified conditions, should be provided.
Data should be included which demonstrate the efficiency of induction of antigen
production, if applicable.  Data should also be provided showing the stability of genetic
markers under the conditions of propagation, if applicable.
b.  Harvest
For each method or combination of methods, a tabulation should be provided of yields,
purity, and viability (if applicable) of the crude harvest, based on historical performance.
c.  Inactivation
Inactivation or killing curves, or a tabular representation, based on historical
performance should be provided.  Validation of the titration method to measure residual
live agents, including sensitivity in a background of inactivated agents, should be
provided.
17 d.  Purification
For each method or combination of methods used, a tabulation of yields, purity, and
biological activity should be provided.  Verification of the removal or dilution of product
related and non-product related impurities, e.g., processing reagents, endotoxin,
contaminating cell proteins or nucleic acids, and other residual contaminants should be
included.  A standard denominator (e.g., international units) should be used to facilitate
comparison through processing, concentration, or dilution.
e.  Microbiology
A description and documentation of the validation studies for any processes used for
media sterilization, effectiveness of preservatives, decontamination, inactivating cells
prior to their release to the environment, if such inactivation is required, etc., should
be provided.  If the drug substance is intended to be sterile, information should be
submitted as described in the "Guidance for Industry for the Submission of
Documentation for Sterilization Process Validation in Applications for Human and
Veterinary Drug Products.
3.  Control of Bioburden
For each process which is not intended to be sterile, documentation of the control of
extraneous bioburden by a tabulation of in-process testing for bioburden should be provided.
(Validation of bioburden control techniques may be described under Item 15 of the
Application.)  For aseptic processing, further guidance may be found in the "Guideline on
Sterile Drug Products Produced by Aseptic Processing."
E.  Manufacturing Consistency
Consistency of the manufacturing process for each vaccine component should be demonstrated
by manufacturing at least three, preferably consecutive, batches of drug substance.  The
establishment and use of reference standards in assuring consistency in product characteristics
should be described.
1.  Reference Standards
A description of the preparation, characterization, and stability of primary and working
reference standards should be provided.  A detailed description of the procedures to qualify
new lots of reference standards and acceptance criteria for a new reference standard should
be included.
18 2.  Release Testing
Release (acceptance criteria) testing results and other (for information only) characterization
data (e.g., certificates of analysis) for each batch should be submitted.
F.  Drug Substance Specifications
1.  Specifications
This section should contain the specifications and tests for each drug substance.  These
should include assays for identity, purity, potency (biologic effect), physicochemical
measurements which predict potency, and where applicable, measures of stability.  For
highly purified substances, purity in reference to the theoretical composition should be
presented.  In some cases test results for the stabilized intermediates of component antigens
should be included in the final release of the drug product.  The results of the validation
studies for each of these specifications, including estimates of variability and upper and
lower limits, should be provided.  Where appropriate, potency should be presented relative
to the respective U.S. Reference Standard as defined in 21 CFR 610.20.
2.  Impurities Profile
This section should include a discussion of the impurities in the drug substance.  The identity
and quantity of impurities should be provided along with the analytical data (gels, elution
profiles, Western blots, etc.) which support the impurities profile.  Impurities that should be
characterized and quantitated include:
  product related impurities (variants or alterations of antigen occurring during processing
or storage)
  Process related impurities
 -  media components;
 -  cell substrate proteins or nucleic acids; or
-  process reagents which have not been removed by the purification process (see 
I.D., Process Controls).
G.  Reprocessing
This section should include detailed information on any reprocessing that may be done on each
drug substance.  The information provided for each reprocessing procedure should include:
 
  a description of the conditions or criteria, determined from process controls or
specifications, which indicate the need for re-processing;
  a description of the reprocessing step;
  the Standard Operating Procedure for the step;
19   a description of any additional or modified in-process controls or specifications which are
included to monitor re-processing steps;
  a description of the modifications in batch numbers and documentation of re-processing in
the Batch Production Record (BPR); and
  the evidence derived from validation studies which assures that product identity, purity,
potency, and stability is preserved for re-processed batches.
H.  Container and Closure System
A description of the container and closure system, and its compatibility with the drug substance
should be submitted.  The submission should include detailed information concerning the
supplier, address, and the results of compatibility, toxicity and biological tests. Alternatively, a
Drug Master File (DMF) may be referenced for this information.  If the drug substance is
intended to be sterile, evidence of container and closure integrity for the duration of the
proposed expiry period should be provided.
I.  Drug Substance Stability
This section should contain information on the stability of the drug substance and any in-process
material at each holding step, as outlined in Stability Testing of New Drug Substances and
Products, 10/27/93, Quality of Biotechnological Products: Stability Testing of
Biotechnological/Biological Products, 11/30/95 and Guideline for Submitting Documentation
for the Stability of Human Drugs and Biologics, 1987.
II.  DRUG PRODUCT
This section should contain information on the final drug product including all drug substances and
excipients in the final product.  If any proprietary preparations or mixtures are used as components,
the information provided should include a complete statement of composition and other information
that will properly describe and identify these materials.  For all ingredients of human or animal
origin, testing results or certificates of analysis demonstrating their freedom from adventitious
agents should be provided.  Appropriate information may be cross-referenced to those under Drug
Substance.
A.  Composition and Characterization
1.  Composition
A list should be provided of all components in the drug product, including drug substance(s)
and other ingredients, with their unit doses and batch quantities specified.  For some inactive
ingredients, the quantity may be expressed as percent or molarity.
a.  Drug Substance(s)
A list of each drug substance should be provided.
20 b.  Excipient
This section should contain a list of all inactive components with the rationale for the
inclusion of each in the final product.  The information provided should include
certificates of analysis, results of analytical testing, or other information that will
describe or identify each excipient.  If compendial excipients are used, citations may be
included in lieu of analytical testing.  Excipients may include, but not be limited to:
 
  diluents (molarity, pH should be included for these);
  bulking agents;
  adsorbents (other than adjuvants); and
  stabilizers (e.g., sugars, wetting agents).
c.  Adjuvant
This section should contain a list of the chemical formula and precise quantity of each
adjuvant per unit dose.  Whether the quantity of adjuvant is determined by assay or by
calculation should be indicated and the method used should be described.
d.  Preservative
Each preservative should be identified by chemical as well as any trade name or
reference to compendial sources.  A rationale should be provided for the inclusion of a
preservative in single dose drug products.  The results of the preservative effectiveness
studies should be included or reference may be made to other files.
2.  Specifications and Analytical Methods for Drug Product Ingredients
This section should contain a description of tests and specifications for all ingredients, if not
specified in the Drug Substance section.
a.  Description
A qualitative statement describing the physical state (lyophilized solid, powder, liquid)
and color and clarity of the drug product and other ingredients should be provided.
b.  Identity
The assays used to establish the identity of the drug product should be described.  The
description of each assay should include an evaluation of its specificity and sensitivity.
21 c.  Purity and Impurities
This section should include information on the purity of the final product including
identification and quantitation of impurities, including degradation products, inherent in
the final dosage form.  If impurities are known to be introduced or formed during the
production of the drug product, the acceptable limits of these impurities should be
determined and included in the specifications.
d.  Potency
A description should be provided of the potency assay for the drug product.
Information should be submitted on the sensitivity, specificity, and variability of the
assay including the data from the material used to prepare clinical/preclinical lots which
were used to set the acceptance limits for the assay.
B.  Manufacturer and Facilities
The name(s) and address(s) of all manufacturers involved in the manufacture and testing of the
drug product including contractors, and a description of the responsibility(ies) of each should be
submitted.  A list of all other products (research & development, clinical or approved) made in
the same rooms should be provided.  See Part 1, Section I. B. of this document for detailed
guidance.
C.  Manufacturing Methods
This section should include a detailed description of the manufacturing process flow of the
formulated bulk and finished drug product including the sterilization operations, aseptic
processing procedures, lyophilization, and packaging.  Accompanying this narrative, a flow
chart should be provided that indicates the production step, the equipment and materials used,
the room or area where the operation is performed (may reference the simple floor diagram) and
a listing of the in-process controls and tests performed on the product at each step.  A Master
Production Record (MPR) for the drug product should be provided, including complete
manufacturing instructions for adsorption (if applicable), formulation, filling, labeling, and
packaging.  References may be made to other sections for more detailed information.  Results of
studies validating the compatibility of the components including the adjuvants and/or
preservatives, if applicable, should be provided.  Lot-to-lot consistency of the drug product
should be demonstrated.
D.  Drug Product Specifications
1.  Sampling Procedures
The sampling procedures for monitoring a batch of finished drug product should be
included.
22 2.  Specifications and Methods
A description of all test methods selected to assure the identity, purity, strength and/or
potency, as well as the lot-to-lot consistency of the finished product and the specifications
used for the drug product should be submitted.  Certificates of analysis and analytical results
for at least three consecutive batches should be provided.
3.  Validation Results
The results of studies validating the specificity, sensitivity, and variability of each method
used for release testing should be provided.  Where applicable this should include
descriptions of reference standards and their validation.  For analytical methods in
compendial sources, the appropriate citations should be provided.
E.  Container and Closure System
A description of the container and closure system, and its compatibility with the drug product
should be submitted.  Detailed information concerning the supplier(s), address(es), and the
results of compatibility, toxicity and biological tests should be included.  Alternatively, a DMF
can be referenced for this information.  For sterile product, evidence of container and closure
integrity should be provided for the duration of the proposed expiry period.
F.  Microbiology
Information should be submitted as described in the "Guidance for Industry for the
Submission of Documentation for Sterilization Process Validation in Applications for Human
and Veterinary Drug Products.
G. Lyophilization
A validation summary for lyophilization of the drug product should be given which includes:
  A narrative description of the validation (or protocol);
  Certification that IQ and OQ have been completed;
  A validation data summary;
  Explanation of all excursions or failures; and
  Deviation reports and results of investigations of all excursions or failures.
H.  Drug Product Stability
This section should state the proposed expiration dating period for the drug product and the
recommended storage conditions.  The criteria for determining the date of manufacture, from
which the expiration dating period begins, should be defined.  For lyophilized products, a shelf-
life after reconstitution should be proposed.  Detailed guidance on stability may be found in
23 Stability Testing of New Drug Substances and Products, 10/27/93, Quality of
Biotechnological Products: Stability Testing of Biotechnological/Biological Products, 11/30/95
Guideline for Submitting Documentation  for the Stability of Human Drugs and Biologics,
1987, and Guidance for Industry: Stability Testing of Drug Substances and Drug Products,
June 1998.
1.  Stability Protocol
A stability study protocol should be provided which includes, but is not limited to, testing
for:
  potency;
  physicochemical measurements which are potency-indicating;
  moisture, if lyophilized;
  pH, if appropriate;
  sterility or control of bioburden;
  viability of cells, if frozen and thawed;
  pyrogenicity; and
  general safety.
2.  Stability Data
The summary results which support the proposed expiration dating period, under
recommended conditions, in the final container and closure system, should be provided.  The
stability of each dosage form should be separately documented.  For lyophilized products
the data supporting the shelf-life of the product following reconstitution should be included.
If the drug product is frozen, data supporting the stability of the product through a stated
number of freeze-thaw cycles should be provided.
3.  Stability Program
A plan for an on-going stability program should be provided.  This should include the
protocol to be used, number of final lots to be entered into the stability protocol each year
and how such lots will be selected.
III.  INVESTIGATIONAL FORMULATION
A discussion of any differences in formulation, manufacturing process, or site between the clinical
trials materials and commercial production batches of drug substance and drug product should be
submitted.  If there are differences, a complete description of these differences should be included.
If an investigational drug formulation was different from that of the to-be-marketed finished
product, data to support comparability, bioequivalence and/or pharmacokinetic equivalence of the
two formulations should be provided, if appropriate (reference 9).  If the manufacturing process
and/or site was different, data from appropriate testing to assess the comparability of the
investigational and commercial products should be provided.
24 IV.  ENVIRONMENTAL ASSESSMENT
An environmental assessment (EA), as outlined in 21 CFR Part 25, or a request for a categorical
exclusion with the basis for the exclusion, should be submitted.  If an EA is appropriate, it should
include a description of the action that is being considered and should address all the components
involved in the manufacture and disposal of the product.
V.  METHOD VALIDATION
For all release or acceptance testing performed on the drug substance(s) or product, information as
described in the Guideline for Submitting Samples and Analytical Data for Methods Validation
should be provided.
PART 2  ESTABLISHMENT DESCRIPTION SECTION
I.  INTRODUCTION
In the Federal Register of July 8, 1997, the Food and Drug Administration announced the
availability of Revised Form FDA 356h "Application to Market a New Drug, Biologic, or an
Antibiotic for Human Use.  This section provides guidance on the content and format of
information submitted in Section 15, the Establishment Description section, of a License
Application for vaccines and vaccine related products.  The information contained in this section
need not be submitted for recombinant DNA derived vaccines or synthetic peptide vaccines.
II.  GENERAL INFORMATION
For each manufacturing location, a floor diagram should be included that indicates the general
facility layout.  The following information should be provided on each floor diagram and/or in an
accompanying narrative:
  Product, personnel, equipment, waste and air flow;
  An illustration or indication of which areas are served by each air handling unit; and
  Air pressure differentials between adjacent areas.
Alternatively, this information may be illustrated on the floor diagram requested in the CMC
section.  The manufacturing flow chart requested in the CMC section may also be referenced as
applicable.
25 III.  SPECIFIC SYSTEMS
A.  Water Systems
The following information on water purification systems for the production of water for use in
manufacturing and rinsing of product contact equipment, and containers and closures, should
be provided.
1.  General Description
A general description of the water system(s) should be submitted, including water source,
major components, and a general discussion of the type of water used for each stage of
processing.
       2.  Validation Summary
 
 A validation summary should be provided containing:
 
  a narrative description of the validation process (or protocol) including acceptance
criteria;
  certification that installation qualification (IQ) and operational qualification (OQ) have
been completed;
  the length of the validation period;
  the parameters monitored and tests performed;
  the frequency of monitoring each point of use during the validation period;
  a validation data summary; and
  an explanation of all excursions or failures, including deviation reports and results of
investigations.
3.  Routine Monitoring Program
A narrative description of the routine monitoring program should be submitted, to include:
  the tests performed;
  the frequency of testing;
  the alert and action limits used; and
  a summary of actions to be taken when limits are exceeded.
B.  Heating, Ventilation, and Air Conditioning Systems (HVAC)
1.  General Description
A general description of the HVAC system(s)should be provided including:
  the number and segregation of air handling units;
26   whether air is once-through or recirculated;
  containment features; and
  air changes/hour.
The information required for some of these features is described below in greater detail in
the contamination/cross contamination section of this document.  Reference may be made
to information in the CMC section.
2.  Validation Summary
A validation summary with the following information should be provided for the system,
which contains:
  a narrative description of the validation process (or protocol), including the acceptance
criteria;
  certification that IQ, OQ and certification of filters has been completed;
  length of the validation period;
  a validation data summary (validation data should include Performance Qualification
data accumulated during actual processing); and
  an explanation of all excursions or failures, including deviation reports and results of
investigations.
3.  Routine Monitoring Program
A narrative description of the routine monitoring program should be provided including:
  the tests performed and frequencies of testing for viable and nonviable particulate
monitoring parameters;
  viable and nonviable particulate action and alert limits for production operations for
each manufacturing area; and
  a summary of actions to be taken when limits are exceeded.
C.  Computer Systems
This section should contain information on computer systems which control critical
manufacturing processes.  The developer of the system, i.e., whether in-house or contractor,
should be identified.  The information provided should also include a brief description of
procedures for changes to the computer system.  For each of these systems a list of the
manufacturing steps which are computer-controlled should be provided.  This section should
also contain a validation summary for each of these systems, which includes:
  a narrative description of the validation process (or protocol), including acceptance
criteria;
  certification that IQ and OQ have been completed;
  an explanation of the parameters monitored and tests performed;
27   a validation data summary;
  an explanation of all excursions or failures; and
  deviation reports and results of investigations for all excursions or failures.
IV.  CONTAMINATION/CROSS CONTAMINATION ISSUES
The following information regarding methods to prevent contamination and cross contamination
should be provided to supplement the information requested in the CMC section of the
application.
A.  Cleaning procedures and validation
1.  Dedicated Equipment
A brief description of the cleaning procedures and cleaning reagents used should be
provided.  This section should also contain a certification that the cleaning validation for
removal of product residuals and cleaning agents has been successfully completed.
      2.  Shared Equipment
 
 This section should contain:
  a brief description of the cleaning procedures and cleaning reagents;
  a rationale for the cleaning procedures chosen which addresses their effectiveness for
the residual products to be removed; and
  a validation report describing the cleaning validation procedures for removal of
product residues and cleaning agents.  The report should identify the sampling and
analytical methods used and address their sensitivities and specificities.
 
B.  Containment features
 
 This section should contain a description of segregation and containment procedures for
areas, manufacturing operations, personnel, equipment and waste materials designed to
prevent contamination of products.  The features that are employed to maintain segregation
and containment should be discussed.  These features might include but is not limited to:
 
  air pressure differentials between adjacent manufacturing areas;
  segregation of air handling units;
  air supply and return (recirculated, once-through, HEPA filtered out, etc.); and
  use of airlocks
Reference may be made to information in the CMC section.
28 APPENDIX A
Guidance
1. Guidance for Industry for the Submission of Documentation for Sterilization Process Validation
in Applications for Human and Veterinary Drug Products, 1994
2. Guidance for Industry for the Evaluation of Combination Vaccines for Preventable Diseases:
Production, Testing, and Clinical Studies, 1997
3. Guidance for Industry for the Submission of  Chemistry, Manufacturing, and Controls
Information for Synthetic Peptide Substances, 1994
4. Guideline on Sterile Drug Products Produced By Aseptic Processing, 1987
5. Guideline for Submitting Documentation  for the Stability of Human Drugs and Biologics, 1987
6. Guideline for Submitting Supporting Documentation in Drug Applications  for the Manufacture
of Drug Substances, 1987
7. Guideline for Submitting Samples and Analytical Data for Methods Validation, 1987
8. Guidance for Industry for the Submission of Chemistry, Manufacturing, and Controls
Information for Therapeutic Recombinant DNA-Derived Product or a Monoclonal Antibody
Product for In Vivo Use, 1996
9. FDA Guidance Concerning Demonstration of Comparability of Human Biological Products,
Including Therapeutic Biotechnology-Derived Products, 1996
10.Guideline on General Principles of Process Validation, 1987
Points To Consider
11.Points to Consider in the Manufacture and Testing of Monoclonal Antibody Products for
Human Use , 1997
12.Points to Consider in the Manufacture and Testing of Therapeutic Products for Human Use
Derived from Transgenic Animals, 1995
13.Points to Consider in the Characterization of Cell Lines Used to Produce Biologicals, 1993
14.Points to Consider in the Production and Testing of New Drugs and Biologicals Produced by
Recombinant DNA Technology, 1985
29 15.  Supplement to the Points to Consider in the Production and Testing of New Drugs and
Biologicals Produced by Recombinant DNA Technology: Nucleic Acid Characterization and
Genetic Stability, 1992
 
16.  Points to Consider on Plasmid DNA Vaccines for Preventive Infectious Disease Indications,
1996
 
17.  Points to Consider in Human Somatic Cell and Gene Therapy, 1991
International Conference on Harmonization (ICH) Guidelines
18.  Stability Testing of New Drug Substances and Products, 10/27/93
 
19.  Analysis of the Expression Construct in Cells Used for Production of R-DNA Derived Protein
Products, 11/29/95
 
20.  Quality of Biotechnological Products: Stability Testing of Biotechnological/Biological Products,
11/30/95
21.Viral Safety Evaluation of Biotechnology Products Derived from Cell Lines of Human or Animal
Origin, 11/29/95
22.Guidance on Quality of Biotechnological/Biological Products: Derivation and Characterization
of Cell Substrates Used for Production of Biotechnological/Biological Products, 9/21/98
30