** Cancer biotech co's RNXT.O shares surge ~50% to $11.82
premarket, set to open at a record high since stock began
trading on Aug. 26
** RNXT says it received FDA approval for an updated design
of its proprietary RenovoCath Delivery System urn:newsml:reuters.com:*:nPn5Ckc2Xa
** RenovoCath Delivery System is a catheter that helps
deliver cancer drugs directly to tumor sites
** More than 2.5 mln RNXT shares trade
** Up to Friday, stock down 12.3% than its IPO price of $9
(Reporting by Ruhi Soni in Bengaluru;)
((Ruhi.Soni@thomsonreuters.com;))