I do not have the contents of the article "Breaking Barriers in Mucopolysaccharidosis Type II" from the New England Journal of Medicine (Volume 394, Issue 1, Pages 91-92, January 1, 2026), so I cannot create a summary based solely on verified facts from it. The search results provided do not contain relevant information about this article or its main findings. If you provide the full text or relevant sources, I will prepare a summary as requested.