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. 2022 Aug 23;36(5):549–571. doi: 10.1007/s40259-022-00549-3

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© The Author(s) 2022

Open AccessThis article is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, which permits any non-commercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by-nc/4.0/.

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Fig. 4 — Chemical modification patterns of small interfering RNAs approved for clinical use: patisiran, givosiran, inclisiran, lumasiran, and vutrisiran. Modifications are indicated by colored circles, and phosphorothioate modifications are highlighted as well; see the lower panel for an explanation of the symbols.

Adapted from Hu et al. [27]