Related Experiment Video
Updated: Jun 6, 2026

In Vitro Methods for Comparing Target Binding and CDC Induction Between Therapeutic Antibodies: Applications in Biosimilarity Analysis
Published on: May 4, 2017
Novel methods to assess bioequivalence
Vangelis Karalis1, Mira Symillides, Panos Macheras
1Faculty of Pharmacy, National and Kapodistrian University of Athens, Laboratory of Biopharmaceutics-Pharmacokinetics, Panepistimiopolis, 15771, Athens, Greece. vkaralis@pharm.uoa.gr
Bioequivalence studies ensure two drug products with the same active ingredient perform similarly in vivo. This review covers methods, regulatory aspects, and challenges like high variability and biosimilars for drug safety and efficacy.
Area of Science:
- Pharmacokinetics and Drug Development
- Regulatory Science
Background:
- Bioequivalence (BE) studies are crucial for assessing in vivo equivalence of generic drug products.
- Ensuring therapeutic equivalence minimizes risks and optimizes healthcare costs.
Purpose of the Study:
- To review the classic bioequivalence assessment approach.
- To discuss special considerations including metabolites, highly variable drugs, and regulatory landscapes in North America and Europe.
- To explore advanced methods for high variability drugs and the emerging field of biosimilars.
Main Methods:
- Review of established bioequivalence methodologies.
- Analysis of regulatory guidelines and special case considerations.
- Discussion of advanced statistical approaches and biowaiver concepts.
Main Results:
- Readers will understand the necessity and execution of bioequivalence studies.
- Key challenges such as high drug variability and the role of metabolites are addressed.
- Current regulatory standards and innovative solutions are presented.
Conclusions:
- Bioequivalence studies are essential for guaranteeing comparable in vivo drug performance.
- Appropriate clinical studies ensure drug safety and efficacy with reduced costs and human exposure.
- Understanding bioequivalence is vital for drug developers and regulatory bodies.
Related Concept Videos
Bioequivalence Data: Statistical Interpretation
Equivalence: In Vitro and In Vivo Bioequivalence
Bioequivalence studies: Biowaivers
Bioequivalence Experimental Study Designs: Repeated Measures, Cross-Over, Carry-Over, and Latin Square Designs
Bioequivalence Experimental Study Designs: Completely Randomized and Randomized Block Designs
Bioequivalence: Overview

