Pharmacokinetics, Biodistribution, Immunogenicity, and Model-Informed-Based PK/PD Model of a Next-Generation Advanced Novel Gene Therapy for Hemophilia

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The study shows that VGB-R04 gene therapy improves factor IX levels in mice and monkeys.
Peak concentrations were observed 1 hour post-injection, with a distinct decline over time.
Pharmacokinetic and pharmacodynamic models were developed to predict clinical doses for hemophilia treatment.
Elevated anti-hFIX Padua antibodies correlated with reduced hFIX expression after 4 weeks in cynomolgus monkeys.

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Model-informed analysis demonstrates biodistribution and immunogenicity in hemophilia B treatments, improving dose prediction.

Dou et al. (2025) studied this question.

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