RGX-121, a one-time gene therapy using AAV vector technology, is expected to receive regulatory approval in the second half of 2025, potentially offering lifelong benefits from a single infusion for Hunter Syndrome patients.
Tividenofusp alfa and Verenafusp alfa represent breakthrough therapies designed to cross the blood-brain barrier, addressing both CNS and somatic symptoms that current treatments like Elaprase cannot reach.
The Hunter Syndrome treatment paradigm is shifting from weekly enzyme replacement therapy costing over $500,000 annually to potentially curative single-dose treatments targeting neurological decline.
IZCARGO, launched in Japan in 2021, currently stands as the only approved therapy addressing both somatic and CNS symptoms by crossing the blood-brain barrier, though availability remains limited to the Japanese market.