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  • Biogen Bets on Tau at AAIC: Diranersen Phase 2 CELIA Data
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Biogen Bets on Tau at AAIC: Diranersen Phase 2 CELIA Data

Biogen will disclose full CELIA Phase 2 data for its tau ASO diranersen at AAIC 2026, testing whether the post-amyloid Alzheimer's thesis can survive a primary-endpoint miss.
pharminent July 2, 2026

NeuroMarket Pulse — July 1, 2026

Biogen will disclose full CELIA Phase 2 data for its tau-targeting antisense oligonucleotide diranersen at AAIC 2026, testing whether the post-amyloid Alzheimer’s thesis can survive a primary-endpoint miss even as robust tau biomarker reductions keep the program alive.

Today’s top developments:

  • Biogen to highlight breadth of Alzheimer’s disease portfolio at AAIC 2026, headlined by full CELIA Phase 2 diranersen tau data and subcutaneous lecanemab results (Biogen)
  • Two large Phase 3b trials, MUSETTE and GAVOTTE, confirm higher-dose Ocrevus adds no benefit in MS, subtly strengthening the BTK inhibitor thesis (Multiple Sclerosis News Today)
  • Vedana Therapeutics emerges with $46 million Series A for long-acting anti-PACAP migraine therapies, alongside Lundbeck’s positive Phase 2b bocunebart data (Pharmafile)
  • Following EU approval, AbbVie highlights Aquipta (atogepant) Phase III ECLIPSE efficacy at EAN 2026 (Pharmaceutical Technology)

What to Watch

  • Tavapadon PDUFA — AbbVie’s (Cerevel) first-in-class D1/D5 partial agonist for Parkinson’s, filed September 26, 2025, has an FDA decision expected around mid-2026, placing it in the immediate near-term window (see Catalyst Calendar for full timing).
  • AAIC 2026 (July/August) — the year’s definitive Alzheimer’s data inflection point, with Biogen’s full CELIA Phase 2 diranersen data and subcutaneous lecanemab results expected, plus ongoing Phase 3 biomarker updates from Lilly (remternetug) and Roche (trontinemab).
  • Fenebrutinib NDA — Roche’s H1 2026 filing target for its CNS-penetrant BTK inhibitor has now passed, making any submission announcement in the coming weeks the top near-term MS market-structure catalyst.
  • NICE lecanemab/donanemab reconsideration — the reconsidered UK assessments, driven by the unpaid carer-cost argument, could reset how anti-amyloid value is modeled across European and Canadian HTAs.

This brief highlights the edition’s top stories. Read the full July 1, 2026 edition → for all stories and analysis — or browse the NeuroMarket Pulse archive.

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