(Updates)
** Shares of drug developer Xilio Therapeutics XLO.O more
than double to $1.49, set for record single-day pct gain
** AbbVie ABBV.N and XLO enter into collaboration and
option agreement to develop cancer immunotherapies
** Under terms of the deal, XLO to receive $52 million in an
upfront payment and will be eligible to receive up to about $2.1
billion in milestone payments
** Deal gives ABBV access to XLO's proprietary
tumor-activation technology to develop new immunotherapies
** More than ~84 mln shares traded, 234 times their 25-day
moving average
** In the last 12 months, XLO has fallen 7%
(Reporting by Siddhi Mahatole and Kamal Choudhury)
((Siddhiprabhanjan.mahatole@thomsonreuters.com))