Mitapivat, sold under the brand name Pyrukynd among others, is a medication used to treat different types of anemia. It is taken as the sulfate hydrate salt by mouth. Mitapivat is a pyruvate kinase activator.
The most common side effects include decreases in estrone and estradiol (types of the estrogen hormone) in men, increased urate (a type of salt in the body), back pain, and joint stiffness.
In December 2025, mitapivat (brand name Aqvesme) was approved in the US for the treatement of anemia in adults with alpha- or beta-thalassemia.
Mitapivat has also been evaluated for the treatment of sickle cell disease, with a promising phase 2 trial.
Pharmacology
Mechanism of action
Mitapivat binds to and activates pyruvate kinase, thereby enhancing glycolytic pathway activity, improving adenosine triphosphate (ATP) levels and reducing 2,3-diphosphoglycerate (2,3-DPG) levels. Mutations in pyruvate kinase cause deficiency in pyruvate kinase which prevents adequate red blood cell (RBC) glycolysis, leading to a buildup of the upstream glycolytic intermediate 2,3-DPG and deficiency in the pyruvate kinase product ATP.
History
The US Food and Drug Administration approved mitapivat based on evidence from two clinical trials of 107 participants with pyruvate kinase deficiency. Trial 1 (NCT03548220) of 80 adults with pyruvate kinase deficiency who did not receive regular blood transfusions and trial 2 (NCT03559699) of 27 adults with pyruvate kinase deficiency who received regular blood transfusions. In trial 1, participants were randomly assigned to receive either mitapivat or a matched placebo tablet for an average duration of about 24 weeks. Neither the participants nor the healthcare providers knew which treatment was being given during the trial. Trial 1 was conducted at 36 sites in the following countries: Brazil, Canada, Denmark, France, Germany, Italy, Japan, Republic of Korea, Netherlands, Spain, Switzerland, Turkey, United Kingdom, and the United States. In Trial 2, all participants received mitapivat for an average duration of about 40 weeks. Trial 2 was conducted at 17 sites in the following countries: Canada, Denmark, France, Ireland, Italy, Netherlands, Thailand, United Kingdom, and the United States.
Society and culture
Legal status
In September 2022, the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) adopted a positive opinion, recommending the granting of a marketing authorization for the medicinal product Pyrukynd, intended for the treatment of an inherited condition called pyruvate kinase deficiency. The applicant for this medicinal product is Agios Netherlands B.V. Mitapivat was approved for medical use in the European Union in November 2022.
1234"Pyrukynd EPAR". European Medicines Agency (EMA). 14 September 2022. Retrieved 5 December 2022. Text was copied from this source which is copyright European Medicines Agency. Reproduction is authorized provided the source is acknowledged.
12Gormley N. "Pyrukynd (mitapivat) tablets NDA approval"(PDF). Center for Drug Evaluation and Research. Letter to Christina Baladi (Agios Pharmaceuticals, Inc.). U.S. Food and Drug Administration. Archived from the original(PDF) on 20 February 2022.
↑Idowu M, Otieno L, Dumitriu B, Lobo CL, Thein SL, Andemariam B, etal. (January 2025). "Safety and efficacy of mitapivat in sickle cell disease (RISE UP): results from the phase 2 portion of a global, double-blind, randomised, placebo-controlled trial". The Lancet. Haematology. 12 (1) e35–e44. doi:10.1016/S2352-3026(24)00319-3. PMID39644907.
12"Mitapivat (Code C157039)". NCI Thesaurus. 31 January 2022. Archived from the original on 20 February 2022. Retrieved 19 February 2022. This article incorporates text from this source, which is in the public domain.
↑"PK-R allosteric activator AG-348". NCI Drug Dictionary. National Cancer Institute. Archived from the original on 10 August 2019. Retrieved 19 February 2022. This article incorporates text from this source, which is in the public domain.
12"Pyrukynd: Pending EC decision". European Medicines Agency (EMA). 15 September 2022. Archived from the original on 19 September 2022. Retrieved 18 September 2022. Text was copied from this source which is copyright European Medicines Agency. Reproduction is authorized provided the source is acknowledged.
↑"International nonproprietary names for pharmaceutical substances (INN): recommended INN: list 78". WHO Drug Information. 31 (3): 539. 2017. hdl:10665/330961.
Clinical trial number NCT03548220 for "A Study to Evaluate Efficacy and Safety of AG-348 in Not Regularly Transfused Adult Participants With Pyruvate Kinase Deficiency (PKD)" at ClinicalTrials.gov
Clinical trial number NCT03559699 for "A Study Evaluating the Efficacy and Safety of AG-348 in Regularly Transfused Adult Participants With Pyruvate Kinase Deficiency (PKD)" at ClinicalTrials.gov
Clinical trial number NCT04770779 for "A Study Evaluating the Efficacy and Safety of Mitapivat in Participants With Transfusion-Dependent Alpha- or Beta-Thalassemia (α- or β-TDT) (ENERGIZE-T)" at ClinicalTrials.gov
Clinical trial number NCT04770753 for "A Study Evaluating the Efficacy and Safety of Mitapivat in Participants With Non-Transfusion-Dependent Alpha- or Beta-Thalassemia (α- or β-NTDT)" at ClinicalTrials.gov