Some clinical trial news of the day (March 27, 2026 - **updated March 29th**)

"Blue Horseshoe loves Anacott Steel." Today we cover recent clinical trial news in the FSHD space and delve a bit deeper into some topics from part 1 of our Reddit Q&A. **Updated version**

The lowlight was Roche canceling their trial. The highlight was Sarepta's announcement of preliminary clinical data. Getting siRNAs, ASOs, and viruses into liver is easy because liver is filled with leaky capillaries, however, muscle is poorly vascularized and blood vessels have tight junctions so targeting cell receptors for enhanced transcytosis greatly enhances skeletal muscle delivery. Sarepta's targeting of the alpha v beta 6 integrin is a great advance in delivery of siRNA against DUX4 and, as predicted, shows the best DUX4 knockdown we have seen so far.