Question · Q4 2025
Nevin Jacob asked about the mechanistic hypotheses for how transferrin modification reduces ARIA risk, the potential for lower heme toxicities with this approach, and whether the PRX-012-TfR would still enable subcutaneous delivery.
Answer
Gene Kinney, President and CEO, discussed hypotheses for ARIA reduction, including altered penetration into cerebral vasculature and reduced dwell time on vascular amyloid due to transcytosis, confirming that subcutaneous delivery is still expected for PRX-012-TfR. Phil Dolan, VP and Head of Discovery Research, added that PRX-012's potency might allow for lower dosing, potentially minimizing non-ARIA AEs like anemia.
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