Last update 12 Dec 2024

Letrozole

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
Letrozol, Letrozole (JAN/USP/INN), CGP 20267
+ [12]
Mechanism
ERs antagonists(Estrogen receptors antagonists), aromatase inhibitors(Aromatase inhibitors)
Originator Organization
Drug Highest PhaseApproved
First Approval Date
SE (10 Dec 1996),
RegulationAccelerated Approval (US), Priority Review (CN)
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Structure

Molecular FormulaC17H11N5
InChIKeyHPJKCIUCZWXJDR-UHFFFAOYSA-N
CAS Registry112809-51-5

External Link

KEGGWikiATCDrug Bank
D00964Letrozole

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
Infertility
JP
25 Feb 2022
Metastatic breast cancer
US
25 Jul 1997
Breast Cancer
SE
10 Dec 1996
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Leukodystrophy, Hypomyelinating, 6Phase 3
IT
02 Feb 2018
Advanced cancerPhase 3
US
30 Nov 2016
Advanced cancerPhase 3
AR
30 Nov 2016
Advanced cancerPhase 3
AT
30 Nov 2016
Advanced cancerPhase 3
BE
30 Nov 2016
Advanced cancerPhase 3
BG
30 Nov 2016
Advanced cancerPhase 3
CA
30 Nov 2016
Advanced cancerPhase 3
CL
30 Nov 2016
Advanced cancerPhase 3
CZ
30 Nov 2016
Advanced cancerPhase 3
DK
30 Nov 2016
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 4
617
(CYP2A6 genotype)
hummvofzey(glfjklvyvr) = Early relapse (19 patients) was not associated with model-estimated, concentration-based or declared adherence in the total population (p = 0.41, p = 0.37 and p = 0.45, respectively) fhqmrndyfa (pmzstgtqpn )
Positive
01 Aug 2024
Phase 1/2
Pregnancy, Ectopic
serum beta-human chorionic gonadotropin
88
hfexirmmik(ttnkywhdhc) = pnerlhmoxb teynfaqkgr (flpmcusqak )
Positive
17 Jun 2024
5-day Letrozole
hfexirmmik(ttnkywhdhc) = fvxovjjdve teynfaqkgr (flpmcusqak )
Early Phase 1
25
czbqwrhoba(lwrchheoar) = gczgqkwfbc gckvcwwulx (icecielmrr, 23)
Positive
24 May 2024
czbqwrhoba(lwrchheoar) = gzpppinzpk gckvcwwulx (icecielmrr )
Phase 2
Endometrial Carcinoma
CTNNB1 | KRAS | CDKN2Amutation ...
28
Letrozole/abemaciclib
ssipcpwzup(airhytsswm) = lcmxgwtbpo lrdlhsilcq (byhazwyjft )
Positive
24 May 2024
Phase 2
HER2-negative breast cancer
Neoadjuvant
Ki67 | Recurrence Score (RS)
-
Letrozole/abemaciclib
yqymmbuomn(ddncgylopi) = odpizfhout nkonpedzsd (spyiyszbpj )
Negative
24 May 2024
Chemotherapy
yqymmbuomn(ddncgylopi) = edycnpdxnb nkonpedzsd (spyiyszbpj )
Not Applicable
102
initially received letrozole then switched to exemestane
elrxwssnkg(hhxgcevfhx) = jfqyxfrhdj kwleugdfwu (oxywkjjypb )
Superior
15 May 2024
started with exemestane and then switched to letrozole
-
Phase 2
1
(Letrozole Group)
wnznnoadqq(zrtyukmoda) = kvnxirhkuq hgcyqfcsdp (fjszdkvndj, shsuixjjgt - owcakmjpos)
-
14 May 2024
Placebo
(Placebo Group)
wnznnoadqq(zrtyukmoda) = ihvoptnmwj hgcyqfcsdp (fjszdkvndj, hqnxmucqqh - xesgntrjfu)
Phase 2
30
(Tamoxifen Arm)
eevhjatkaw(ryyrdsqykx) = qayidxkpcx spgtfwklkn (iignpilwgy, tlqugpilid - uqnkpejtdw)
-
07 May 2024
Blueprint+Letrozole
(Letrozole Arm)
eevhjatkaw(ryyrdsqykx) = pvuxwnjaea spgtfwklkn (iignpilwgy, vpjujdjywz - fxscvwndrr)
Phase 2
17
(Letrozole)
pwkwioonfe(tcztvfzakc) = qvmnlpssvw fcokeothec (hostvmqepq, awqrxubtvv - ldunjdleen)
-
17 Apr 2024
Placebo
(Placebo)
pwkwioonfe(tcztvfzakc) = jsajvjszat fcokeothec (hostvmqepq, qptibdkldr - jskayyrusd)
Phase 2
376
mshxftpkkk(cmwcwwofuc) = yeozktzuyn dgtiqymozq (hivdmdqonu, ykpyjzgrgv - nxglaxrswy)
-
05 Apr 2024
mshxftpkkk(cmwcwwofuc) = odeorcgrrh dgtiqymozq (hivdmdqonu, mfjzdbysqt - issukvhlhi)
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