** Shares of drug developer Jasper Therapeutics JSPR.O rise 17% to $2.02 in premarket trading
** Co says early-stage study of its experimental drug briquilimab improved lung function and reduced airway inflammation in allergic asthma patients
** Early-stage study enrolled about 17 patients in Canada; drug was well-tolerated with no serious safety issues - JSPR
** Co's briquilimab targets mast cells, which trigger asthma symptoms and allergic reactions - JSPR
** Up to last close, stock down ~92% YTD
(Reporting by Sahil Pandey in Bengaluru)
((Sahil.Pandey@thomsonreuters.com))