Overcoming challenges associated with the bioanalysis of cysteine-conjugated metabolites in the presence of antibody-drug conjugates.
Bioanalysis
; 2021 Sep 23.
Article
in En
| MEDLINE
| ID: mdl-34551622
ABSTRACT
Aim:
Investigations have shown that for the antibody-drug conjugate (ADC) belantamab mafodotin, concentrations of the cysteine-conjugated metabolite, Cys-mcMMAF, were overestimated in the presence of the ADC during sample processing when utilizing a historical SPE method.Results:
A new assay was developed utilizing an acidic protein precipitation to remove the ADC early in the extraction process, thus eliminating the risk of overestimating Cys-mcMMAF in the presence of belantamab mafodotin. In vitro experiments demonstrated a linear relationship between the concentration of belantamab mafodotin and the release of Cys-mcMMAF. Extensive stability assessments were performed to cover storage of study samples.Conclusion:
This work emphasized the critical importance of understanding the performance of a bioanalytical method for free toxic payload in the presence of the ADC.
Full text:
1
Database:
MEDLINE
Type of study:
Risk_factors_studies
Language:
En
Year:
2021
Type:
Article