Abstract
MRX34 has recently entered the clinic as the first therapeutic product based on a microRNA (miRNA) mimic. In order to measure drug concentrations in vivo, a quantitation method is needed that exhibits high precision, accuracy, and robustness. While most clinical applications for oligonucleotide therapeutics involve methods based on hybridization assays and liquid chromatography-tandem mass spectrometry, quantitative PCR (qPCR) is a less well-described approach. Here, we present an RT, qPCR, and analysis method to determine the tissue biodistribution of endogenous as well as a therapeutic, exogenous miRNA mimic therapeutic. Assay performance is demonstrated on multiple tissues from nonhuman primates dosed with MRX34.
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