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First-in-human study with new recombinant agalsidase beta (ISU303) in healthy subjects.

[fabry disease]

ISU303 is a new recombinant agalsidase beta (Agal) enzyme replacement therapy under investigation for Fabry disease, caused by a deficiency in α-galactosidase A activity that leads to fatty deposits in tissues. We evaluated the pharmacokinetic (PK) parameters, safety and tolerability of ISU303 in healthy adult volunteers. The study was a dose block-randomized, double-blinded, placebo-controlled, single-dosing, and dose escalation phase 1 clinical trial. A total of 18 healthy subjects were enrolled (0.3 mg/kg, n = 6; 1.0 mg/kg, n = 6; placebo, n = 6). Blood samples for PK analysis were collected according to planned time. The PK parameters in each 0.3 and 1.0 mg/kg Agal group were as follows: Cmax (mU/mL) 43.19 ± 5.9 and 195.86 ± 32.3; AUClast (h·mU/mL) 207.91 ± 25.1 and 939.96 ± 158.3; t1/2 (hours) 1.13 ± 0.3 and 1.46 ± 0.2; Cl (mL/min/kg) 1.79 ± 0.2 and 1.34 ± 0.2, respectively. There were seven adverse events (AE) overall. All AEs were resolved without any complications. None were related to the study drug. There were no immunogenicity or any significant infusion-related reactions. The new Agal product exhibited a dose-dependent PK and was well tolerated with no significant AEs in healthy adult volunteers.

Diseases presenting "new recombinant agalsidase beta" symptom

  • fabry disease

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