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The latest biotech stories, each synthesized from multiple sources with added background and context.

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Sanofi and Regeneron Rebuild Alliance with $8B Immunology Deal
biotech9 days ago

Sanofi and Regeneron Rebuild Alliance with $8B Immunology Deal

Sanofi and Regeneron have signed a new collaboration agreement worth up to $8 billion to develop four early-stage immunology assets. The deal includes a $1 billion upfront payment from Sanofi and up to $7 billion in potential milestone payments. This partnership aims to secure future growth for Sanofi as its blockbuster drug, Dupixent, faces patent expiration in 2031. The agreement also resolves a 2024 lawsuit filed by Regeneron against Sanofi over commercialization details. Regeneron will lead research and development for the assets, while Sanofi will handle global commercialization. The most advanced asset, REGN20423, is already in clinical trials for eczema.

Kodiak Sciences stock triples as Zenkuda matches Eylea in Phase 3 trial
biotech11 days ago

Kodiak Sciences stock triples as Zenkuda matches Eylea in Phase 3 trial

Kodiak Sciences shares surged nearly 178% after its Phase 3 Daybreak trial results showed that both Zenkuda and tabirafusp-ted matched the efficacy of aflibercept (Eylea) for wet age-related macular degeneration. The company plans to file for FDA approval of Zenkuda in the fourth quarter of 2026, citing data that allows for extended dosing intervals.

Roche Halts Emugrobart Obesity Trial After Failed Interim Analysis
biotech11 days ago

Roche Halts Emugrobart Obesity Trial After Failed Interim Analysis

Roche has terminated development of emugrobart, a myostatin-blocking antibody intended to preserve muscle during weight loss, after an interim analysis of its phase 2 Gyminda trial indicated the drug was unlikely to meet its endpoints. The company has returned the asset to its Japanese subsidiary, Chugai, which plans to resume development for spinal muscular atrophy and seek licensing partners. This setback follows earlier failures in muscular dystrophy trials and occurs as Roche expands its obesity portfolio through other deals.

Adicet Bio Reports Lupus Remissions in CAR-T Trial, Avoiding Safety Issues Seen in Rivals
biotech12 days ago

Adicet Bio Reports Lupus Remissions in CAR-T Trial, Avoiding Safety Issues Seen in Rivals

Adicet Bio reported that its off-the-shelf CAR-T therapy, prula-cel, induced remission in over half of lupus patients in a Phase 1 trial. The treatment showed a favorable safety profile with no severe inflammatory events, distinguishing it from rival autologous therapies that recently faced trial pauses due to fatalities.

Kyverna reports durable, safe CAR-T results as rivals face safety pauses
biotech15 days ago

Kyverna reports durable, safe CAR-T results as rivals face safety pauses

Kyverna Therapeutics released one-year data for its CD19 CAR-T therapy, miv-cel, showing sustained efficacy and no severe safety events in stiff person syndrome and myasthenia gravis. The results contrast with recent safety pauses at Novartis and Bristol Myers Squibb, supporting Kyverna's FDA submission for a potential first-in-class autoimmune treatment.