In a phase 1 healthy volunteer study, one participant dosed at 1 mg/kg of sotatercept experienced increased Hgb associated with symptomatic hypertension that improved with phlebotomy.
In the event of overdose in a patient with PAH, increases in Hgb and blood pressure should be closely monitored, and supportive care should be provided as appropriate (see Dosage & Administration and Precautions). Sotatercept is not dialysable during haemodialysis.