** Shares of Larimar Therapeutics LRMR.O fall 31% to $3.50 premarket on safety concerns about its experimental drug, nomlabofusp, after data from a long-term study
** Drug was being tested for Friedreich's ataxia, a rare genetic disorder that causes progressive damage to the nervous system
** Seven participants experienced anaphylaxis within the first 6 weeks of dosing and were withdrawn from the study, co says
** Anaphylaxis is a sudden and severe allergic reaction that can cause breathing problems, swelling and a drop in blood pressure
** "The major downside is that we continue to see anaphylaxis" - Jones Trading analyst Catherine Novack
** As of last close, stock up 31% YTD
(Reporting by Kamal Choudhury in Bengaluru)
((Kamal.Choudhury@thomsonreuters.com;))
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