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High-Content Screening Assay for the Identification of Antibody-Dependent Cellular Cytotoxicity Modifying Compounds

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Published on: August 18, 2023

Beyond cytotoxic potency: disposition features required to design ADC payload.

Hao Sun¹, Larry C Wienkers¹, Anthony Lee¹

¹Clinical Pharmacology and Translational Sciences, Pfizer Oncology Division, Pfizer, Inc, Bothell, WA, USA.

Xenobiotica; the Fate of Foreign Compounds in Biological Systems

|July 17, 2024

Summary

Selecting the right cytotoxic payload is crucial for antibody-drug conjugate (ADC) development. Key factors beyond potency, including solubility and pharmacokinetics, ensure safe and effective ADC therapeutics.

Keywords:

ADC ADME DDI discovery disposition metabolism payload pharmacokinetics

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Area of Science:

Oncology
Pharmacology
Biotechnology

Background:

Antibody-drug conjugates (ADCs) offer significant clinical benefits in cancer treatment by enhancing the therapeutic index of cytotoxic payloads.
Optimizing ADC design requires careful selection of payload molecules to minimize systemic toxicity and maximize efficacy.
The competitive landscape of ADC development necessitates a thorough understanding of payload characteristics.

Purpose of the Study:

To review critical attributes for discovering and developing cytotoxic payloads for ADC design.
To highlight essential dispositional characteristics integral to creating safe and effective ADC therapeutics.

Main Methods:

Review of existing literature on cytotoxic payloads for ADC development.
Analysis of key payload attributes including potency, solubility, permeability, bystander effect, pharmacokinetics, metabolism, and drug-drug interactions.

Main Results:

Payload potency is a primary consideration, but not the sole determinant of ADC success.
Dispositional characteristics such as solubility, permeability, and pharmacokinetic profiles significantly influence ADC safety and efficacy.
Understanding metabolism and potential drug-drug interactions is vital for integrated ADC design.

Conclusions:

The selection and development of cytotoxic payloads require a comprehensive approach, integrating potency with critical dispositional properties.
Careful consideration of these attributes is essential for the successful design of clinically viable antibody-drug conjugates.
This integrated strategy supports the development of safer and more effective ADC-based cancer therapies.