** Shares of Gritstone bio Inc GRTS.O rise 11.5% to $2.62
** Co announces updated overall survival results from an
early-to mid-stage study of its experimental cancer
immunotherapy for treatment of advanced solid tumors
** Co says 6 of 13 treated patients had molecular response
and observed median overall survival in the group will now
exceed 22 months
** Data compares with observed median overall survival in
treatment group exceeding 18 months, which was reported in May
** Therapy is being evaluated in patients with a type of
colorectal cancer, sometimes called as colon cancer, who have
received at least two prior lines of therapy
** Overall survival represents testing the drug to see
whether it is helping patients live longer
** Including session's move, stock down ~80% YTD
(Reporting by Raghav Mahobe)
((Raghav.Mahobe@thomsonreuters.com;))