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Eprex, Janssen), and continuous erythropoietin receptor activators (Mircera, Roche) are some of the recombinant erythropoietin products that are on the market (233, 246, 247)

Moreover, HIF2 KO cells showed enrichment of m + 15 proline isotopologues compared to both HIF WT and HIF1 KO cells (Figure S3D)

The criterion exists because in clinical experience the predictable failure mode for peptide therapy is prescribing the second-best peptide for a patient whose presentation pointed to a different first choice

doi: 10.3389/fddev.2026.1692219 Received 25 August 2025 Revised 05 February 2026 Accepted 12 February 2026 Published 20 March 2026 Volume 6 - 2026 Edited by Kapila Seneviratne, University of Kelaniya, Sri Lanka Reviewed by Marina Ramal Snchez, University of Teramo, Italy Ruchika Maurya, Medical University of South Carolina, United States Raz Abdulqadir, The Pennsylvania State University (PSU), United States Updates Copyright 2026 Ryan and Brayden