Development and validation of LC-MS-based bioanalytical methods for oligonucleotide therapeutics: points to consider

Area of Science:

• Pharmaceutical Analysis
• Bioanalytical Chemistry
• Therapeutic Modality Development

Background:

• Oligonucleotide therapeutics (e.g., antisense oligonucleotides, siRNAs) possess unique physicochemical properties, posing challenges for existing bioanalytical methods.
• Current International Council for Harmonisation (ICH) M10 guidelines lack specific validation frameworks for these complex nucleic acid-based drugs.
• There is a critical need for targeted bioanalytical method development and validation strategies for oligonucleotide therapeutics.

Purpose of the Study:

• To provide comprehensive recommendations for developing and validating bioanalytical methods for oligonucleotide therapeutics.
• To address specific technical challenges encountered in liquid chromatography-mass spectrometry (LC-MS) analysis.
• To support regulatory submissions and promote global harmonization of bioanalytical standards.

Main Methods:

• Expert consensus and literature review by the Japan Agency for Medical Research and Development research groups.
• Focus on ion-pair reversed-phase LC-MS methodologies and emerging techniques like hybridization extraction.
• Adaptation of ICH M10 validation parameters with fit-for-purpose modifications.

Main Results:

• Identification of key challenges: mobile phase stability, metal adsorption, carryover, internal standard selection, and matrix effects.
• Development of strategies for sample preparation, chromatographic optimization, and mass spectrometric detection.
• Recommendations for adapting validation parameters to the unique nature of oligonucleotide therapeutics.

Conclusions:

• The white paper provides practical guidance for the development and validation of LC-MS bioanalytical methods for oligonucleotide therapeutics.
• These recommendations aim to facilitate regulatory submissions and ensure the quality of bioanalytical data.
• The proposed strategies contribute to the standardization and advancement of bioanalytical science in this rapidly growing field.