Immunome up 16% on varegacestat Phase III results in desmoid tumors

16 December 2025

US biotech Immunome (Nasdaq: IMNM) has announced positive top-line results from the global pivotal Phase III RINGSIDE trial of varegacestat, an investigational, oral, once-daily gamma secretase inhibitor (GSI), in patients with progressing desmoid tumors.

These data led shares in Immunome, which is focused on developing targeted cancer therapies, to close 16% higher on Monday.

RINGSIDE met its primary endpoint of improving progression-free survival, demonstrating a statistically significant and clinically meaningful improvement versus placebo, with an 84% reduction in the risk of disease progression or death.

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