Do you have questions about the recent changes announced by Ultragenyx to the Vigilan Natural History Study? ACD is hosting a virtual town hall event on Friday, Oct. 14, from 12 noon – 1:30pm PT with Ultragenyx representatives and Dr. Judi Miller, the Coordinating Principal Investigator for the Vigilan study, to answer your questions. You can read a letter from Ultragenyx announcing changes to the Vigilan study here. Please register and submit your questions here by Friday, September 23.