Success by nearly all measures with Praxis Precision Medicines Inc.’s essential tremor phase III candidate, ulixacaltamide, drove the company’s stock up significantly and provided solid data for an NDA filing planned for early 2026.
After Study 1’s independent data monitoring committee said the experiment will likely fall short of its primary endpoint with ulixacaltamide in essential tremor, Praxis Precision Medicines Inc. plans to wait for full data from Study 1 as well as Study 2 in the Essential 3 phase III program before deciding on regulatory moves.
In the wake of Sage Therapeutics Inc.’s recent phase II fizzle with SAGE-324 in essential tremor, Wall Street is waiting for better news in the indication, which has racked up failures across several developers. Among those finding favor lately is Praxis Precision Medicines Inc. with Nav-targeting ulixacaltamide, also known as PRAX-628, which Oppenheimer analyst Francois Brisebois said “warrants particular attention.”
Boston-based Praxis Precision Medicines Inc.’s shares rose nearly 25% on Jan. 8 after it announced a pipeline update and licensing deal for its tremor drug, ulixacaltamide (PRAX-944), with Shanghai’s Tenacia Biotechnology Co. Ltd.
Praxis Precision Medicines Inc. CEO Marcio Souza said it would be “disingenuous not to move forward” – U.S. FDA willing – into a phase III effort with an alternate design targeted for the second half of this year, given top-line results from the phase IIb Essential-1 study with ulixacaltamide (PRAX-944) for essential tremor.
