Mitapivat Interactions

Pregnancy & Breastfeeding

8.1 Pregnancy Risk Summary Available data from clinical trials of AQVESME are insufficient to evaluate for a drug-associated risk of major birth defects, miscarriage or other adverse maternal or fetal outcomes. In animal reproduction studies, mitapivat orally administered twice daily to pregnant rats and rabbits during organogenesis was not teratogenic at exposures up to 9.9- and 2.4‑fold the human exposure associated with the MRHD, respectively. Mitapivat administered orally to pregnant rats twice daily during organogenesis through lactation did not result in adverse developmental effects at doses up to 9.9 times the MRHD ( see Data) . The estimated background risk of major birth defects for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Clinical Considerations Disease-Associated Maternal Risk Transfusion requirements in thalassemia patients are increased during pregnancy. Pregnant women with transfusion-dependent thalassemia are considered high risk, with their major complications being cardiac in origin, including cardiac dysrhythmia, right ventricular dysfunction, and cardiac failure, reported in 1.1% to 15.6%. Pregnant women with non-transfusion-dependent thalassemia need to be monitored and treated for risk of thrombosis, especially those who are splenectomized or infrequently transfused. Patients with non-transfusion-dependent thalassemia may develop a need for regular transfusions during pregnancy, and in such patients the risk of alloimmunization should be carefully evaluated. All pregnant women with thalassemia should be closely monitored for iron overload. Data Animal Data In an embryo-fetal development study in rats, mitapivat was administered at doses of 5, 10, 25, and 100 mg/kg twice daily by oral