Alligator Bioscience soars on positive mitazalimab trial

26 February 2025

Shares of Sweden’s immune-oncology firm Alligator Bioscience (STO: ATORX) were up almost 160% at 0.11 kronor by early afternoon today, after the company reported updated results from the Phase II OPTIMIZE-1 study evaluating mitazalimab in combination with standard chemotherapy (mFOLFIRINOX) as a first-line treatment for metastatic pancreatic cancer.

The company noted that the 24-month analysis of the 900µg/kg dose reconfirms and extends the significant survival benefit and reinforces the potential of mitazalimab as a breakthrough immunotherapy candidate in this challenging disease.

The data demonstrated a 24-month survival rate of 29.4% in patients treated with mitazalimab in combination with mFOLFIRINOX. These numbers compare well to estimates of 24-month survival rates of 8% for FOLFIRINOX alone, and 20% for NALIRIFOX alone.

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