SMA is an inherited disease that leads to loss of motor function and ambulation, and a reduced life expectancy. We have been working to develop orally-administrated, systemically-distributed small molecules to increase levels of functional SMN protein. Herein, we describe the discovery risdiplam that focused on thorough pharmacology, DMPK and safety characterization and optimization. This molecule is the world first approved small molecule RNA splicing modulator.
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