Drugs / Irsenontrine
last change Apr 2026 re-read 2 minutes ago

Irsenontrine

Small molecule targets PDE9A via inhibition

Developed for
Lewy body dementia · Parkinson disease
Investigated by
Eisai Inc.

Trials 6 · a red edge is where a trial was stopped

PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 14 trials
Phase 1 NCT04023877 Jul → Oct 2019 Lewy body dementia Eisai Inc. Completed No outcome recorded
Phase 1 NCT02947711 Oct → Nov 2016 Eisai Inc. Completed No outcome recorded
Phase 1 NCT02873156 Aug 2016 → Nov 2017 Eisai Inc. Completed No outcome recorded
Phase 1 NCT02415790 Jul 2015 → Jun 2016 Eisai Inc. Completed No outcome recorded
Phase 22 trials
Phase 2 NCT04764669 Feb → Dec 2021 Lewy body dementia, Parkinson disease Eisai Inc. Completed No outcome recorded
Phase 2 NCT03467152 May 2018 → Apr 2020 Lewy body dementia Eisai Inc. Completed No outcome recorded

Evidence & citations 11 cited values

Every value below carries the sentence it was read from. 8 sources stand behind the page.

FieldValueCited text
Known as Irsenontrine ClinicalTrials.gov intervention name — accepted as the source's own label NCT03467152
Known as E-2027 MALEATE ChEMBL registry synonym — accepted as the source's own label CHEMBL4650368
Known as E2027 ClinicalTrials.gov intervention name — accepted as the source's own label NCT04023877
4

NCT04764669

NCT02873156

NCT02415790

NCT02947711

Known as ER-000592221- MAL ChEMBL registry synonym — accepted as the source's own label CHEMBL4650368
Known as ER-592221-00 ChEMBL registry synonym — accepted as the source's own label CHEMBL4650368
Known as ER-592221-12 ChEMBL registry synonym — accepted as the source's own label CHEMBL4650368
Known as IRSENONTRINE MALEATE ChEMBL registry synonym — accepted as the source's own label CHEMBL4650368
Action Inhibit “Irsenontrine (E2027) is a potent and selective PDE9 inhibitor” PMID 42026627 Apr 2026
1

“Phosphodiesterase 9A inhibitor” CHEMBL4650368

Modality Small molecule CHEMBL4650368
Route Oral “E2027 capsules will be administered orally in doses of 10 mg to 1200 mg in Part A” NCT02415790
Target PDE9A “Phosphodiesterase 9A inhibitor” CHEMBL4650368