Drugs / Andexanet alfa
last change Jun 2026 re-read 2 minutes ago

Andexanet alfa

Protein / enzyme biologic targets TFPI via inhibition

Developed for
intracerebral hemorrhage
Investigated by
Portola Pharmaceuticals · Alexion Pharmaceuticals, Inc. · AstraZeneca · Parexel

Regulatory milestones approvals, filings & regulatory actions · 1 recorded

MilestoneJurisdictionBrandIndicationDateSentence it was read from
Approved · conditional EU (EMA) Ondexxya 2019-04-26 europa.eu

Trials 12 · a red edge is where a trial was stopped

PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 13 trials
Phase 1 NCT07312851 Jan → Jun 2026 AstraZeneca Completed No outcome recorded
Phase 1 NCT03083704 Feb → Sep 2017 hemorrhagic disease Portola Pharmaceuticals Completed No outcome recorded
Phase 1 NCT03218241 Jun → Sep 2012 Portola Pharmaceuticals Completed No outcome recorded
Phase 27 trials
Phase 2 NCT04233073 Jun → Nov 2021 Alexion Pharmaceuticals, Inc. Terminated No outcome recorded
Phase 2 NCT03310021 Aug 2017 → Aug 2019 hemorrhagic disease Portola Pharmaceuticals Completed No outcome recorded
Phase 2 NCT03330457 Aug 2015 → Feb 2016 hemorrhagic disease Portola Pharmaceuticals Terminated No outcome recorded
Phase 2 NCT03551743 Dec 2012 → Sep 2015 Portola Pharmaceuticals Completed No outcome recorded
Phase 2 NCT03578146 Dec 2012 → Sep 2015 Portola Pharmaceuticals Completed No outcome recorded
Phase 2 NCT03551730 Dec 2012 → Sep 2015 Portola Pharmaceuticals Completed No outcome recorded
Phase 2 NCT01758432 Dec 2012 → Sep 2015 Portola Pharmaceuticals Completed No outcome recorded
Phase 31 trial
Phase 3 NCT05926349 Aug 2024 → Jan 2027 AstraZeneca Withdrawn No outcome recorded
Phase 41 trial
Phase 4 NCT03661528 Jun 2019 → May 2023 intracerebral hemorrhage Alexion Pharmaceuticals, Inc. Completed No outcome recorded

Evidence & citations 11 cited values

Every value below carries the sentence it was read from. 15 sources stand behind the page.

FieldValueCited text
Known as Andexanet alfa ClinicalTrials.gov intervention name — accepted as the source's own label NCT03083704
6

NCT07312851

NCT04233073

NCT03310021

NCT03330457

NCT05926349

NCT03661528

Known as andexanet “We randomly assigned, in a 1:1 ratio, patients who had taken factor Xa inhibitors within 15 hours before having an acute intracerebral hemorrhage to receive andexanet or usual care.” PMID 38749032 May 2024
Known as Andexxa ChEMBL registry synonym — accepted as the source's own label CHEMBL3301583
Known as Ondexxya ChEMBL registry synonym — accepted as the source's own label CHEMBL3301583
Known as PRT-4445 ChEMBL registry synonym — accepted as the source's own label CHEMBL3301583
Known as PRT064445 ClinicalTrials.gov intervention name — accepted as the source's own label NCT03218241
4

NCT03578146

NCT01758432

NCT03551743

NCT03551730

Known as rfXa Inhibitor Antidote ChEMBL registry synonym — accepted as the source's own label CHEMBL3301583
Action Inhibit “Tissue factor pathway inhibitor inhibitor” CHEMBL3301583
Modality Protein / enzyme biologic “Andexanet alfa, a modified, catalytically inactive, recombinant human FXa derivative” PMID 29296829 Sep 2017
Route Intravenous intravenously administered PRT064445” NCT01758432
Target TFPI “Tissue factor pathway inhibitor inhibitor” CHEMBL3301583