Question · Q4 2025
Michael Yee followed up on BIIB080, asking about the importance of subgroup analyses (e.g., high vs. low tau) and the tau sub-study using PET tau imaging, beyond the primary endpoint of CDR sum of boxes, for the upcoming readout.
Answer
Priya Singhal, Head of Development at Biogen, affirmed the critical importance of evaluating tau PET, fluid biomarkers, and clinical data trends, along with triangulating all available information. She noted that the study's design, which includes a tau sub-study and tests three doses across two dosing regimens in a randomized controlled trial, is well-suited to provide comprehensive insights and assess the scientific hypotheses.
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