1. Metabolic blood profile and response to treatment with the pyruvate kinase activator mitapivat in patients with sickle cell disease
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Myrthe J. vanDijk, Titine J. J. Ruiter, Sigrid van derVeen, Minke A. E. Rab, Brigitte A. vanOirschot, Jennifer Bos, Cleo Derichs, Anita W. Rijneveld, Marjon H. Cnossen, Erfan Nur, Bart J. Biemond, Marije Bartels, Roger E. G. Schutgens, Wouter W. vanSolinge, Judith J. M. Jans, Eduard J. vanBeers, and Richard vanWijk
- Subjects
Diseases of the blood and blood-forming organs ,RC633-647.5 - Abstract
Abstract Mitapivat is an investigational, oral, small‐molecule allosteric activator of pyruvate kinase (PK). PK is a regulatory glycolytic enzyme that is key in providing the red blood cell (RBC) with sufficient amounts of adenosine triphosphate (ATP). In sickle cell disease (SCD), decreased 2,3‐DPG levels increase the oxygen affinity of hemoglobin, thereby preventing deoxygenation and polymerization of sickle hemoglobin. The PK activator mitapivat has been shown to decrease levels of 2,3‐DPG and increase levels of ATP in RBCs in patients with SCD. In this phase 2, investigator‐initiated, open‐label study (https://www.clinicaltrialsregister.eu/ NL8517; EudraCT 2019‐003438‐18), untargeted metabolomics was used to explore the overall metabolic effects of 8‐week treatment with mitapivat in the dose‐finding period. In total, 1773 unique metabolites were identified in dried blood spots of whole blood from ten patients with SCD and 42 healthy controls (HCs). The metabolic phenotype of patients with SCD revealed alterations in 139/1773 (7.8%) metabolites at baseline when compared to HCs (false discovery rate‐adjusted p
- Published
- 2024
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