** Shares of cancer diagnostic test maker Grail GRAL.O rise 16.3% to $87.80 premarket
** Samsung to invest $110 mln in GRAL to bring Galleri cancer detection test to South Korea – co
** Galleri is a blood test that screens for over 50 types of cancer by detecting abnormal DNA shed by tumors – GRAL
** Samsung C&T 028260.KS to lead rollout; expansion eyed for Japan and Singapore, co says
** Samsung Electronics 005930.KS to explore tech tie-ups with GRAL, including AI and health data integration
** Co says deal expected to close in early 2026, subject to conditions
** Up to last close, GRAL stock up ~323% YTD
(Reporting by Sahil Pandey in Bengaluru)
((Sahil.pandey@thomsonreuters.com))