This document discusses regulatory analysis and approval of biosimilars. It begins by noting key differences between biosimilars and generics, including the greater size and complexity of biologics. It then outlines guiding principles for biosimilar development and approval, including analytical studies demonstrating biosimilarity, animal studies assessing toxicity, and clinical studies of immunogenicity, pharmacokinetics, and efficacy or safety. The document discusses specific assay requirements and considerations for pharmacokinetic, structural, protein characterization, immunogenicity, and neutralizing antibody testing. It emphasizes the need to demonstrate biosimilarity through a totality of evidence from characterization, animal, and clinical studies.
Fragment screening library workshop (IQPC 2008)Peter Kenny
I also ran a workshop on selection of compounds for fragment screening just before the 2008 IQPC compound library conference and these are the slides I used.
Immunoassays are antibody based bioanalytical methods based on the principle of Antigen-Antibody Interaction. This presentation covers ELISA, RIA and Immunoprecipitation.
Selection and calibration of analytical method & calibration methodsTapeshwar Yadav
The accuracy of a measurement system is the degree of closeness of measurements of a quantity to the true value.
The precision of a measurement system, also called reproducibility or repeatability, is the degree to which repeated measurements under unchanged conditions show the same results.
The sensitivity of a clinical test refers to the ability of the test to correctly identify those patients with the disease.
A test with 100% sensitivity correctly identifies all patients with the disease.
A test with 80% sensitivity detects 80% of patients with the disease (true positives) but 20% with the disease go undetected (false negatives).
The specificity of a clinical test refers to the ability of the test to correctly identify those patients without the disease.
Therefore, a test with 100% specificity correctly identifies all patients without the disease.
A test with 80% specificity correctly reports 80% of patients without the disease as test negative (true negatives) but 20% patients without the disease are incorrectly identified as test positive (false positives).
The specificity of a clinical test refers to the ability of the test to correctly identify those patients without the disease.
Therefore, a test with 100% specificity correctly identifies all patients without the disease.
A test with 80% specificity correctly reports 80% of patients without the disease as test negative (true negatives) but 20% patients without the disease are incorrectly identified as test positive (false positives).
This presentation mainly deals with clinical development of biosimilar products. It also gives enough on non-clinical development so that the audience is well oriented.
Understanding of Analytical Method Validation Approach in Pharmaceutical Industry. Analytical method validation Verification is a wide chapter and a huge scope of applicability. In different types of methods, instrument, measurement approach all can effect the validation effort. However the basic fundamental will remains same, the parameters, acceptance criteria, functionality may vary depending upon the type of method, instrument etc.
Fragment screening library workshop (IQPC 2008)Peter Kenny
I also ran a workshop on selection of compounds for fragment screening just before the 2008 IQPC compound library conference and these are the slides I used.
Immunoassays are antibody based bioanalytical methods based on the principle of Antigen-Antibody Interaction. This presentation covers ELISA, RIA and Immunoprecipitation.
Selection and calibration of analytical method & calibration methodsTapeshwar Yadav
The accuracy of a measurement system is the degree of closeness of measurements of a quantity to the true value.
The precision of a measurement system, also called reproducibility or repeatability, is the degree to which repeated measurements under unchanged conditions show the same results.
The sensitivity of a clinical test refers to the ability of the test to correctly identify those patients with the disease.
A test with 100% sensitivity correctly identifies all patients with the disease.
A test with 80% sensitivity detects 80% of patients with the disease (true positives) but 20% with the disease go undetected (false negatives).
The specificity of a clinical test refers to the ability of the test to correctly identify those patients without the disease.
Therefore, a test with 100% specificity correctly identifies all patients without the disease.
A test with 80% specificity correctly reports 80% of patients without the disease as test negative (true negatives) but 20% patients without the disease are incorrectly identified as test positive (false positives).
The specificity of a clinical test refers to the ability of the test to correctly identify those patients without the disease.
Therefore, a test with 100% specificity correctly identifies all patients without the disease.
A test with 80% specificity correctly reports 80% of patients without the disease as test negative (true negatives) but 20% patients without the disease are incorrectly identified as test positive (false positives).
This presentation mainly deals with clinical development of biosimilar products. It also gives enough on non-clinical development so that the audience is well oriented.
Understanding of Analytical Method Validation Approach in Pharmaceutical Industry. Analytical method validation Verification is a wide chapter and a huge scope of applicability. In different types of methods, instrument, measurement approach all can effect the validation effort. However the basic fundamental will remains same, the parameters, acceptance criteria, functionality may vary depending upon the type of method, instrument etc.
Bioanalytical Method Development and Validation..
Bioanalytical method validation include all the procedure that demonstrate that a particular method used for quantitative measurement of analyte in given biological matrix are reliable and reproducible for intended use.
Root cause Analysis (RCA) & Corrective and Preventive action (CAPA) in MRCT d...Bhaswat Chakraborty
This presentation describes Identification & differentiation of Protocol deviation & violation; Different methods of RCA & best suitable method for Multiregional Clinical Trial; CAPA management and CAPA application to other trial sites/CRO/SMO/ Country that is involved in same trial (Strategic Management and application of CAPA in MRCT)
This presentation gives effective solutions to outliers issue in bioequivalence trials. It described what would be acceptable to Regulatory agencies as well as some new approaches.
Equivalence approches for complex generics DIA 11 april 2019 Bhaswat Chakraborty
This is a workshop that i gave a few days ago on bioequivalence of complex generics like peptides, polymers, liposomes, colloids, ophthamic and topical produtcts.
Clinical trials that are needed for efficacy & safety evidence of Medical devices include feasibility (pilot) and Pivotal trials. An extended battery of preclinical trials are also needed for high risk devices.
Writing Science papers for for publication requires something more thatn creativity. Target journals, content organization, wrting style, elegance and referencing are equally important.
Multidisc review of NDAs and BLAs nipicon 2018 Dr. ChakrabortyBhaswat Chakraborty
NDAS and BLAs cannot be authoritatively reviewed these days until experts from different disciplines act together like a team. This presentation give some foundational points and an illustrative example in that regard.
Teaching by stories, anecdotes and historical facts sept 25 2018Bhaswat Chakraborty
Many difficult principles in science and humanities can be taught best by a story (of its discovery), by an anecdote or some historical facts about them.
Orientation and Adaptation for Post-Graduate Pharmacy ProgramsBhaswat Chakraborty
PG Pharmacy programs are more focused and professionally oriented than the undergraduate counterpart. Many soft skills are required along with the curricular competence for excellence at the PG level.
Scientific integrity calls for some basic originality. Plagiarism can destroy this original creativity and ideation. This presentation defines plagiarism (stealing from others' works) and some of the creative and systematic remedies.
Best Practices to Risk Based Data Integrity at Data Integrity Conference, Lon...Bhaswat Chakraborty
Data integrity can be implemented using several approaches. One of the most effective ways to implement DI is a risk based approach. The speaker elaborates this.
There are several dimensions in Pharmaceutical ethics -- Practice-, research- and community oriented. This presentation mainly deals with Clinical research oriented Ethics.
Young pharmaceutical scientists are and can get involved in all aspects of new drug discovery and development. They have to be appropriately qualified, trained and experienced though,
High variability in PK can be a characteristic of certain drug products which require different from ordinary strategies and study designs for establishing bioequivalence.
High variability in PK can be a characteristic of certain drug products which require different from ordinary strategies and study designs for establishing bioequivalence.
Tom Selleck Health: A Comprehensive Look at the Iconic Actor’s Wellness Journeygreendigital
Tom Selleck, an enduring figure in Hollywood. has captivated audiences for decades with his rugged charm, iconic moustache. and memorable roles in television and film. From his breakout role as Thomas Magnum in Magnum P.I. to his current portrayal of Frank Reagan in Blue Bloods. Selleck's career has spanned over 50 years. But beyond his professional achievements. fans have often been curious about Tom Selleck Health. especially as he has aged in the public eye.
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Introduction
Many have been interested in Tom Selleck health. not only because of his enduring presence on screen but also because of the challenges. and lifestyle choices he has faced and made over the years. This article delves into the various aspects of Tom Selleck health. exploring his fitness regimen, diet, mental health. and the challenges he has encountered as he ages. We'll look at how he maintains his well-being. the health issues he has faced, and his approach to ageing .
Early Life and Career
Childhood and Athletic Beginnings
Tom Selleck was born on January 29, 1945, in Detroit, Michigan, and grew up in Sherman Oaks, California. From an early age, he was involved in sports, particularly basketball. which played a significant role in his physical development. His athletic pursuits continued into college. where he attended the University of Southern California (USC) on a basketball scholarship. This early involvement in sports laid a strong foundation for his physical health and disciplined lifestyle.
Transition to Acting
Selleck's transition from an athlete to an actor came with its physical demands. His first significant role in "Magnum P.I." required him to perform various stunts and maintain a fit appearance. This role, which he played from 1980 to 1988. necessitated a rigorous fitness routine to meet the show's demands. setting the stage for his long-term commitment to health and wellness.
Fitness Regimen
Workout Routine
Tom Selleck health and fitness regimen has evolved. adapting to his changing roles and age. During his "Magnum, P.I." days. Selleck's workouts were intense and focused on building and maintaining muscle mass. His routine included weightlifting, cardiovascular exercises. and specific training for the stunts he performed on the show.
Selleck adjusted his fitness routine as he aged to suit his body's needs. Today, his workouts focus on maintaining flexibility, strength, and cardiovascular health. He incorporates low-impact exercises such as swimming, walking, and light weightlifting. This balanced approach helps him stay fit without putting undue strain on his joints and muscles.
Importance of Flexibility and Mobility
In recent years, Selleck has emphasized the importance of flexibility and mobility in his fitness regimen. Understanding the natural decline in muscle mass and joint flexibility with age. he includes stretching and yoga in his routine. These practices help prevent injuries, improve posture, and maintain mobilit
Title: Sense of Smell
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
Rasamanikya is a excellent preparation in the field of Rasashastra, it is used in various Kushtha Roga, Shwasa, Vicharchika, Bhagandara, Vatarakta, and Phiranga Roga. In this article Preparation& Comparative analytical profile for both Formulationon i.e Rasamanikya prepared by Kushmanda swarasa & Churnodhaka Shodita Haratala. The study aims to provide insights into the comparative efficacy and analytical aspects of these formulations for enhanced therapeutic outcomes.
Basavarajeeyam is a Sreshta Sangraha grantha (Compiled book ), written by Neelkanta kotturu Basavaraja Virachita. It contains 25 Prakaranas, First 24 Chapters related to Rogas& 25th to Rasadravyas.
These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
1. Regulatory Analysis &
Approval of Biosimilars
Plenary Lecture at Ganpat University
Mehsana, Gujarat, July 20, 2012
Dr. Bhaswat S. Chakraborty
20.07.2012
2. Contents
Differences of Biosimilars from Generics of small mol
drugs
Guiding Principles for Overall Biosimilars
Brief Description of Biosimilar Mfg.
PK/TK Assays
Examples
Immunogenicity Assays
Antidrug Antibody Assays (ADA)
Neutralizing Antidrug Antibody Assays (NAbA)
Examples
Risk Management
Conclusions
3. What are Biosimilars?
Biosimilars are often called follow-on biologics,
generic biologics or follow-on proteins
Biosimilars are new versions of existing trade-name
biological products whose patents have expired
Highly similar biosimilars are not “identical” to the
reference product
They do not utilize the same living cell line,
production process, or raw material as the innovator
drug
8. Overview of USFDA Guidelines for Biosimilars
Integration of Information to Biosimilarity
9. General Regulatory Approach for
Assessment
A risk-based, totality-of-the-evidence approach to
evaluate all data and information provided by a sponsor to
support a demonstration of biosimilarity
Sponsors must use a stepwise approach in their
development of biosimilar products
The type and amount of analyses and testing required to
demonstrate biosimilarity will be on a product-specific
basis
General scientific principles in conducting comparative
analyses will be followed
US FDA
11. Reasons of Biosimilars’
Heterogeneity
Reasons of Biosimilars’ heterogeneity (~ potential
differences between the biosimilar and the innovator
drug):
Biological therapeutics are a complex mixture consisting of the
parent drug, multimers, truncated fragments
The components may or may not exhibit biological activity,
post-translational modifications of the parent and/or truncated
fragments, host cell proteins as well as process related
impurities
Any one of these can cause differences in the way these
drugs behave in the immunoassay, bioassay and
electrophoresis
12. The General Requirements are:
Analytical studies demonstrating that the biological
product is “highly similar” to the reference product
Animal studies (including the assessment of toxicity); and
Clinical studies
assessment of immunogenicity and pharmacokinetics (PK)
PD studies or RCTs to demonstrate
efficacy & safety
purity, and potency
in 1 or more appropriate conditions of use for which the
reference product is licensed.
Overall Guiding Principles
14. PK/TK: Same Platform Technology,
if possible
Since the assay will quantitate both biosimilar (B) and
innovator (R) compounds
Preferable to develop an assay using the same platform
technology (RIA, ELISA, TOF)
However, it is not necessary to utilize the same assay
platform
Use a comparability test for quantitation of both B & R
To demonstrate comparability, at a minimum, accuracy
and precision tests should be conducted using B as CC
When comparable, use one assay for both B & R
Assays can be developed and validated using either B or R
Often B is used for CC
15. PK/TK contd.
Use both B and R QCs throughout the entire assay range (from
ULOQ to LLOQ)
The same assay acceptance criteria should apply for both
Meeting the accuracy and precision acceptance criteria will
demonstrate that both compounds are comparable, since one standard
curve is used to quantify both.
Make Calibration (CC) samples with R [or B]
Analyze QCs at least of 3 levels of both B & R
Acceptance criteria: Intra- and inter-batch imprecision (%CV) and
inaccuracy (%RE) ≤20% except at LLOQ where up to 25% can be
allowed
Method total error (sum the % of the CV and absolute %RE) < 30%
Demonstrate absence of matrix effect
16. Dilutional Linearity
Dilutional linearity must be tested
For single dilutions, back-calculated concentration for each
diluted sample be <20% of the nominal within the linear range
(< 25% at ULOQ and LLOQ).
For multiple dilutions, the back-calculated conc. for cumulative
diluted samples should be within < 20% of the nominal
original value.
The precision of the cumulative back calculated concentration
should be < 20% (< 25% at ULOQ and LLOQ).
The presence or absence of hook (or prozone) effect should
also be evaluated at the higher QC conc. (>1000×).
17. Selectivity (Non-interference from Matrix)
Matrix interference should be performed using B QC
spiked samples
spiked at high and low concentrations into at least 10
individual matrix samples
It should also include the blank individual controls that
will be tested at the minimum required dilution (MRD).
Acceptable non-interference should be seen in >80%
matrices tested.
18. Sample Stability
Stability experiments should mimic, as best as
possible
the conditions under which study samples will be
collected, stored and processed
The duration during which….
The effect of freeze-and-thaw cycles should also be
assessed.
19. Structural Analysis
Sponsors should use an appropriate analytical methodology
with adequate sensitivity and specificity for structural
characterization of the proteins. Generally, such tests include
the following comparisons of the drug substances of the
proposed product and reference product:
Primary structures, such as amino acid sequence
Higher order structures, including secondary, tertiary, and quaternary
structure (including aggregation)
Enzymatic post-translational modifications, such as glycosylation and
phosphorylation
Other potential variants, such as protein deamidation and oxidation
Intentional chemical modifications, such as PEGylation sites and
characteristics
20. Protein Characterization Assays
Use validated bioassays or receptor-binding assays;
quantitative PCR would be excellent
Show equivalency of potency and batch consistency
Usual acceptance criteria: 80-125% but could be wider for
bioassays
When wider, this assay may not be used for PK/TK comparability
Isotyping – significant issue in characterizing assays
It is important to evaluate if assay is indeed due to
immunoglobulin and, if so, what type of antibody
If not IgG but IgE class, it could have potentially serious
safety outcomes.
23. Immunogenicity Assays
The immunogenicity of therapeutic proteins must be assessed
for safety and efficacy concerns
small process changes during the production can change immunogenicity
rate & extent
Immunogenicity rate is difficult to measure, particularly at low
incidence
e.g., from autoimmune reactions to self proteins
Large sample size would be required if the rate of immunogenicity
incidence is low
It is critical to assess the immunogenicity of the B relative to R
An assay using the same platform technology, the same
reagents under the same assay conditions to evaluate antidrug
antibodies (ADAs) would be desirable to assess reactogenicity
24.
25. Immunogenicity Assays..
Initiate very early during development of B, immunization of
animals to develop a positive control (against both B & R)
Evaluate the two ADA positive controls (ADA B & R)
Differences in the starting titers of the positive control antisera
against either the B or are possible due to the individual immune
response of each animal
Assay platform could be ELISA, bridging assays, electrochemi-
luminescence (ECL) or RIA addressing:
Can the assay reagents detect both B & R comparably?
Can the assay tolerate both biosimilar and B & R conc.
comparably?
B = Biosimilar; R = Reference Innovator
26.
27. Bioassay practices
Assessing “linearity” and similarity
Significance testing versus equivalence testing Laboratory B
0.8
p = 0.08 (p > 0.05, i.e., not Standard Data
Test Data
significantly different) 0.4 Standard Line
Test Line
Log10 Response
Conclude parallel! 0
0.5 1 1.5 2 2.5
Rewarded for poor assay -0.4
performance
-0.8
-1.2
Log10 Concentration
Laboratory A
0.8
Standard Data
Test Data
p = 0.02 (p < 0.05, i.e., 0.4
Standard Line
Test Line
significantly different)
Log10 Response
0
0.5 1 1.5 2 2.5
Conclude nonparallel!
-0.4
Penalized for good assay
performance -0.8
-1.2
Log10 Concentration
28. Non-comparable (Non-similar) Assays
If comparability is not demonstrated, separate assays
should be validated for B & R Immunogenicity Assays
If separate assays are to be used for future preclinical or
clinical comparability studies, interpretation is difficult
samples from different arms of the study will be tested using
different assays
B = Biosimilar; R = Reference Innovator
29. Neutralizing-antibody (NAb) Assays
For clinical studies, once a test sample is confirmed to be ADA
positive, evaluate it for Nab assay
to see if it is neutralizing the biologic activity of the drug (B or R)
Regulatory agencies usually prefer to have a cell-based NAb
assay
but other assay formats (e.g., immuno-based assays) are OK when
appropriate cell-lines are not available during development
If a cell-based assay exists for R, use the same platform for
NAb of B
Validating cell-based NAb assays is technically difficult
due to higher variability and a longer turnaround time for these
assays
B = Biosimilar; R = Reference Innovator
30.
31. Patients with NAb can Develop PRCA
PRCA = Pure Red Cell Aplasia or Aplastic Anemia
33. Thus
Biosimilars are not like small molecule generics
Differences between B & R would affect the B’s
potency, Clinical & PK characteristics and safety
profile
A particular B might never be interchangeable with R
Assays are complex, challenging but doable
Validations are not only based on drug conc. alone but also on
biologic activity especially immunogenicity
Demonstrate highly similar first in characterization and
animal studies (including the assessment of toxicity); then
clinical biosimilarity through immunogenicity, PK & PD
and clinical outcomes
Recombinant protein production: sources of variation between manufacturers.
Analytical studies demonstrating that the biological product is “highly similar” to the reference product notwithstanding minor differences in clinically inactive components; • Animal studies (including the assessment of toxicity); and • A clinical study or studies (including the assessment of immunogenicity and pharmacokinetics (PK) or pharmacodynamics (PD)) that are sufficient to demonstrate safety, purity, and potency in 1 or more appropriate conditions of use for which the reference product is licensed.