Last update 26 May 2025

Lasofoxifene Tartrate

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
(-)-cis-5,6,7,8-Tetrahydro-6-phenyl-5-(p-(2-(1-pyrrolidinyl)ethoxy)phenyl)-2-naphthol, Fablyn, lasofoxifene
+ [7]
Target
Action
modulators
Mechanism
ERs modulators(Estrogen receptors modulators)
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Structure/Sequence

Molecular FormulaC32H37NO8
InChIKeyINEHJXCWEVNEDZ-LUDNRVPPSA-N
CAS Registry190791-29-8

External Link

KEGGWikiATCDrug Bank
-Lasofoxifene Tartrate

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
Osteoporosis, Postmenopausal
European Union
24 Feb 2009
Osteoporosis, Postmenopausal
Iceland
24 Feb 2009
Osteoporosis, Postmenopausal
Liechtenstein
24 Feb 2009
Osteoporosis, Postmenopausal
Norway
24 Feb 2009
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Atrophic VaginitisNDA/BLA
United States
-
ER-positive/HER2-negative/ ESR1-mutated breast cancerPhase 3
United States
14 Nov 2023
ER-positive/HER2-negative/ ESR1-mutated breast cancerPhase 3
Australia
14 Nov 2023
ER-positive/HER2-negative/ ESR1-mutated breast cancerPhase 3
Canada
14 Nov 2023
ER-positive/HER2-negative/ ESR1-mutated breast cancerPhase 3
France
14 Nov 2023
ER-positive/HER2-negative/ ESR1-mutated breast cancerPhase 3
Israel
14 Nov 2023
ER-positive/HER2-negative/ ESR1-mutated breast cancerPhase 3
Singapore
14 Nov 2023
ER-positive/HER2-negative Breast CancerPhase 3
United States
31 Oct 2023
ER-positive/HER2-negative Breast CancerPhase 3
China
31 Oct 2023
ER-positive/HER2-negative Breast CancerPhase 3
Australia
31 Oct 2023
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 2
Hormone receptor positive HER2 negative breast cancer
Neoadjuvant
Hormone Receptor Positive | HER2 Negative
20
rhmgafyhkg(okpzcozjtd) = Adverse events (AEs) were all grade 1-2. Most common AEs include hot flushes (65%), constipation (40%), fatigue (40%) and nausea (25%). jzneaveamg (yqqrmogznk )
Positive
11 Apr 2025
Phase 2
-
Lasofoxifene 5 mg/day + Abemaciclib 150 mg b.i.d
lkdbfwbaqc(rdsiythpwm) = srgnzpmymd jtalenhigr (ymcbmrdmeg, 47.3% - 80.1%)
Positive
01 Dec 2023
Phase 2
103
sodzhcovif(wgydfnssoo) = fgxjyzwpsm qtwpkxqwfy (nlgotvmslq )
Positive
01 Dec 2023
sodzhcovif(wgydfnssoo) = zhyezdrsfz qtwpkxqwfy (nlgotvmslq )
Phase 2
29
nsgqyffpbe(uubohjtsob) = LAS/Abema was well tolerated with primarily grade 1/2 treatment-emergent adverse events (most commonly diarrhea, nausea, fatigue, and vomiting) vptgcppujf (vftfewfanc )
Positive
31 May 2023
Phase 2
103
ytibhnnufa(afgkvqxamu) = jvyhbqxcwd yegqozvbxu (cfccqrfxuq )
Positive
01 Mar 2023
Fulvestrant 500 mg on days 1, 15, and 29, then every 4 wks
ytibhnnufa(afgkvqxamu) = psozfioqlt yegqozvbxu (cfccqrfxuq )
Phase 2
ER-positive/HER2-negative Breast Cancer
Second line
ER+/HER2-/ESR1-mutated
103
eqmxxratsb(oysynzxfre) = ithfagnbcn uxrgtxpwyr (hcuufiqvel, 2.82 - 8.04)
Superior
10 Sep 2022
eqmxxratsb(oysynzxfre) = gizmjzpmve uxrgtxpwyr (hcuufiqvel, 2.93 - 6.04)
Phase 2
29
flepowsxmh(vfzhaizhbl) = koxcvczywz zrqtmqnhqy (hqojqirwsu, 44.0–77.3)
-
02 Jun 2022
Phase 3
8,556
Lasofoxifene 0.5 mg/d
astfjxvewe(zmpnrcqfps): hazard ratio = 0.56 (95% CI, 0.32 - 0.98)
-
26 Oct 2010
Placebo
Phase 3
8,556
zoabydvdee(adzmwfpyca) = ihbwruwjmg bcpsdcrfnw (gmrqqtskgc )
-
25 Feb 2010
zoabydvdee(adzmwfpyca) = unjvycuxmo bcpsdcrfnw (gmrqqtskgc )
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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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