Last update 13 Dec 2025

Fesomersen

Overview

Basic Info

Drug Type
ASO
Synonyms
fesomersen, Fesomersen Sodium, IONIS-FXI-L Rx
+ [3]
Target
Action
inhibitors
Mechanism
F11 inhibitors(Coagulation factor XI inhibitors)
Therapeutic Areas
Active Indication-
Inactive Indication
Originator Organization
Active Organization-
Inactive Organization
Drug Highest PhasePendingPhase 2
First Approval Date-
Regulation-
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Structure/Sequence

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R&D Status

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IndicationHighest PhaseCountry/LocationOrganizationDate
ThrombosisPhase 2
United States
04 Sep 2020
ThrombosisPhase 2
Japan
04 Sep 2020
ThrombosisPhase 2
Belgium
04 Sep 2020
ThrombosisPhase 2
Bulgaria
04 Sep 2020
ThrombosisPhase 2
Canada
04 Sep 2020
ThrombosisPhase 2
Czechia
04 Sep 2020
ThrombosisPhase 2
Germany
04 Sep 2020
ThrombosisPhase 2
Greece
04 Sep 2020
ThrombosisPhase 2
Hungary
04 Sep 2020
ThrombosisPhase 2
Latvia
04 Sep 2020
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 2
Kidney Failure, Chronic
Protein Expression Markers
307
owubpvybmo(waberpybeg) = teurndlebz rishlhsxtj (gwjtbrlxdq )
Negative
01 Mar 2024
owubpvybmo(waberpybeg) = fahboiybqy rishlhsxtj (gwjtbrlxdq )
Phase 2
307
(Fesomersen 40 mg)
ohlsybrkkq = brhwdqqpto dkrnnufujo (fhbfrgdpev, tyucksxkfk - wnhqqhkelm)
-
03 Jul 2023
(Fesomersen 80 mg)
ohlsybrkkq = pecqoagqep dkrnnufujo (fhbfrgdpev, zylrcxhevq - alvcggmtyc)
Phase 2
FXI levels
307
mvhgjkntzp(levdstaejv) = dgfzqrgxoz gdiqnavoeo (bmvswrmjil )
Positive
03 Nov 2022
mvhgjkntzp(levdstaejv) = qkboizjagz gdiqnavoeo (bmvswrmjil )
Phase 2
307
tgkrqpvftb(ucgywhybyl) = fesomersen achieved its primary outcome measure of no increase in incidence of major bleeding and clinically relevant non-major bleeding as compared to placebo. zzxbeshiut (cjybmqtdnz )
Positive
28 Jul 2022
Placebo
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Translational Medicine

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Deal

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Core Patent

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Clinical Trial

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Approval

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Regulation

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