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Nitrosamines: Where are we now?

Nitrosamines: Where are we now?

Nitrosamines are a large group of N-nitroso compounds that share a common functional N-N=O group. They are produced by a chemical reaction between a nitrosating agent and a secondary or tertiary amine. Back in 2018, nitrosamines suddenly found themselves in the spotlight when they were unexpectedly detected in medications for high blood pressure. Since then, they have been found in several other prescription medications, including those for heartburn, acid reflux and diabetes, resulting in manufacturers recalling some common medications.

A 2-fold revolution: MS approaches for the bioanalysis of oligonucleotide therapeutics

A 2-fold revolution: MS approaches for the bioanalysis of oligonucleotide therapeutics

In 1998, the US Food and Drug Administration (FDA) approved fomivirsen as the first therapeutic oligonucleotide therapeutic. This approval marked a revolution of mechanism of action discovered decades before finally coming to fruition. Since then, the landscape of chemical modifications of oligonucleotides, conjugations and formulations has evolved tremendously, contributing to improvements in stability, efficacy and safety. Today, more than a dozen antisense oligonucleotides (ASOs) and small interfering RNA (siRNA) drugs are on the market, most of which are designated as orphan drugs for treating rare genetic diseases.

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