** Shares of Dianthus Therapeutics DNTH.O rise 26% to over four-year high of $82.27
** Co says it reached an early "go" decision on its experimental drug for a rare nerve disease ahead of schedule in a late‑stage trial
** A "go" decision means the trial has shown enough early success for the company to move forward to the next stage of the trial
** DNTH is testing the drug, claseprubart, in patients with chronic inflammatory demyelinating polyneuropathy, a rare autoimmune disease where the body attacks the protective coating around nerves, causing weakness, numbness, and loss of balance
** The company hit its goal early after 20 patients responded to the drug before all 40 had completed the first part of the trial
** The "decision comes ahead-of-schedule and beats our expectations," says Cantor analysts', calling it a "clinical de-risking event" that supports a potential drug approval filing
** In 2025, DNTH rose 77.6%
(Reporting by Kamal Choudhury in Bengaluru)
((Kamal.Choudhury@thomsonreuters.com;))