** Shares of drug developer Fulcrum Therapeutics FULC.O jump 49.4% to $13.30 premarket
** Flucrum said on Sunday its experimental drug showed positive results in patients with sickle cell disease from an ongoing 20 dose cohort of an early-stage trial
** Sickle cell disease is an inherited blood disorder that affects the hemoglobin in red blood cells
** In a 12-patient study, the company is testing the safety and efficacy of its experimental drug, pociredir, an oral once-daily HbF inducer
** FULC says every patients in the study experienced a significant rise in fetal hemoglobin (HbF) levels after treatment
** Company plans to re-engage with the FDA in H1 2026
** RBC Capital Markets says it remains on the sidelines, awaiting further regulatory clarity around Fulcrum Therapeutics' development plans
** "We think it will be important to see... whether regulators will allow FULC to move directly into a pivotal trial or ask for an intermediate Phase II trial first" brokerage adds
** As of last close, stock was up 89.4% YTD
(Reporting by Siddhi Mahatole)
((siddhi.mahatole@thomsonreuters.com))
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