I cannot create an abstract of the requested article from the New England Journal of Medicine because that particular article is not available in the search results provided. The search results contain information on treatment-free remission in chronic myeloid leukemia from other sources, but not from the cited issue and the March 26, 2026 issue of the New England Journal of Medicine. In order to create an accurate and factual summary as you require, I would need access to the full text of this particular article.