** U.S. drug developer CervoMed CRVO.O shares rise 12% to $9.55 in premarket trading
** Co said its experimental drug neflamapimod showed promising results in a mid-stage trial for dementia with Lewy bodies, a common age-related dementia
** Patients taking neflamapimod had significant improvements in memory and daily function versus placebo - CRVO
** CRVO says benefits were most notable in patients unlikely to have Alzheimer's alongside Lewy body dementia
** The results helped CRVO refine plans for a late-stage trial; co expects FDA feedback on its late-stage design by year-end.
** Up to last close, stock up ~265%
(Reporting by Sahil Pandey in Bengaluru)
((Sahil.Pandey@thomsonreuters.com))