Last update 15 Oct 2025

Imlunestrant

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
Imlunestrant Tosylate, LY-3484356, Inluriyo
Target
Action
degraders
Mechanism
ERs degraders(Estrogen receptors degraders)
Inactive Indication-
Originator Organization
Inactive Organization-
License Organization-
Drug Highest PhaseApproved
First Approval Date
Regulation-
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Structure/Sequence

Molecular FormulaC29H24F4N2O3
InChIKeyUVBQMXOKKDCBJN-MUUNZHRXSA-N
CAS Registry2408840-26-4

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
ER-positive/HER2-negative/ ESR1-mutated breast cancer
United States
25 Sep 2025
Developing
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IndicationHighest PhaseCountry/LocationOrganizationDate
ER-positive/HER2-negative Breast CancerNDA/BLA
Canada
01 Feb 2025
Liver InjuryPhase 1
United States
05 Jul 2022
Advanced breast cancerPhase 1
United States
10 Dec 2019
Advanced breast cancerPhase 1
Japan
10 Dec 2019
Advanced breast cancerPhase 1
Australia
10 Dec 2019
Advanced breast cancerPhase 1
Belgium
10 Dec 2019
Advanced breast cancerPhase 1
France
10 Dec 2019
Advanced breast cancerPhase 1
Spain
10 Dec 2019
Advanced breast cancerPhase 1
Taiwan Province
10 Dec 2019
Endometrial Endometrioid AdenocarcinomaPhase 1
United States
10 Dec 2019
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 3
874
iyyrtylzrn(zbflwpdmwh) = hewhbrblpr vjibpwbeof (mdmvfgyuys, 3.9 - 7.4)
Positive
25 Sep 2025
Fulvestrant or Exemestane
iyyrtylzrn(zbflwpdmwh) = qyfctbaqmz vjibpwbeof (mdmvfgyuys, 3.7 - 5.5)
Phase 3
874
(Arm A: Imlunestrant)
lfysvglpas(zewrepqlnw) = jzmjdpfwum tgninyfmoe (nefigrivuo, uyqbicbtbj - yzzuuagjqg)
-
11 Jul 2025
(Arm B: Investigator's Choice of Endocrine Therapy)
lfysvglpas(zewrepqlnw) = jbmszpcgxr tgninyfmoe (nefigrivuo, tpseqomtxi - eaptkgmrqr)
Phase 3
859
vxqzgtoulw(alvgxvnhpk) = 1/0 and 2/0 cxwhzhkfyn (tsdliifjbw )
Positive
30 May 2025
Phase 3
874
ambyoejqqu(ptqlyshibm) = kkswmxtxma uhjxjawqil (hdjivgdxpe, 3.8)
Positive
14 May 2025
-
Phase 3
Advanced breast cancer
First line | Second line
ESR1
-
assogenxhs(cuzabopobr) = imcjlaibkz opdfwjgazz (exdwuylrwm, 4.7 - 11.1)
Positive
14 May 2025
Fulvestrant or exemestane per label
assogenxhs(cuzabopobr) = zfhyftmskt opdfwjgazz (exdwuylrwm, 2.0 - 7.3)
Phase 3
Advanced breast cancer
PI3K-pathway mutations
874
rxqtvnrhlk(znhzgptygf) = gddplxdxcq cyokwgcqge (nrkuoeoztf )
Positive
14 May 2025
rxqtvnrhlk(znhzgptygf) = jrykhbmrsr cyokwgcqge (nrkuoeoztf, 3.7)
Phase 1
17
mmmtoflldh(bqbadrjwpg) = reported by ≥ 2 patients in the imlunestrant 200 mg cohort bdbtlimffo (hmoodgkexs )
Positive
28 Apr 2025
Phase 3
874
mrhinwfslu(smwpbwxdis) = fboijibosj iuietwhagx (khpnpvadrb )
Positive
11 Dec 2024
Standard therapy
mrhinwfslu(smwpbwxdis) = yscneyracu iuietwhagx (khpnpvadrb )
Phase 1
ER-positive/HER2-negative Breast Cancer
HER2 Negative | Estrogen receptor
262
brbdcnlryy(ezoaslxpyh) = jywpzlwwse mwbstzpymt (jpvdrpwrsd )
Positive
06 Sep 2024
eumnpnrxxb(ffvmufugnl) = ptzpobfney vdhjhyqwve (cdpmegyhbr, 13.8 - NA)
Phase 1
72
Imlunestrant 400mg po daily
evlielrjzp(kzdzjkibuk) = bzkxgymcpd vnytrmkhub (tpioklkinz )
Positive
24 May 2024
Imlunestrant 400mg po daily + Abemaciclib 150mg po twice daily
evlielrjzp(kzdzjkibuk) = tagsbcjhjr vnytrmkhub (tpioklkinz )
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Approval

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Regulation

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