** Shares of drug developer Annexon ANNX.O rise ~29.3% to
$5.92
** Co says its drug ANX005 met the main goal of showing
significant improvement in the motor function of patients with
Guillain-Barré syndrome (GBS) during a late-stage trial
** GBS is a rare condition where the body's immune system
damages nerves, causing muscle weakness and sometimes paralysis
** ANNX says the drug showed improvements in secondary goals
such as muscle strength and nerve damage
** Up to last close, stock mostly flat YTD
(Reporting by Christy Santhosh)
((Christy.Santhosh@thomsonreuters.com))