RT Journal Article SR Electronic A1 Cunningham, Muriel T1 ANNEXA-A JF MD Conference Express YR 2015 FD SAGE Publications VO 15 IS 21 SP 9 OP 9 DO 10.1177/1559897715599366 UL http://mdc.sagepub.com/content/15/21/9.1.abstract AB In part 2 of the phase 3 ANNEXA-A trial, older subjects receiving a steady dose of apixaban were randomized to receive a bolus plus an infusion of andexanet alfa or placebo in a 3:1 ratio. Andexanet significantly reduced anti-fXa activity, decreased free apixaban, and normalized anticoagulation parameters. It was well tolerated in all study participants.