Last update 31 May 2025

Losmapimod

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
Losmapimod (USAN/INN), FTX-1821, GS-856553
+ [9]
Action
modulators, inhibitors
Mechanism
DUX4 gene modulators(Double homeobox protein 4 gene modulators), MAPK11 inhibitors(mitogen-activated protein kinase 11 inhibitors), p38α inhibitors(P38 α mitogen-activated protein kinase inhibitors)
Active Indication-
Originator Organization
Active Organization-
Drug Highest PhaseSuspendedPhase 3
First Approval Date-
RegulationFast Track (United States), Orphan Drug (United States), Orphan Drug (European Union)
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Structure/Sequence

Molecular FormulaC22H26FN3O2
InChIKeyKKYABQBFGDZVNQ-UHFFFAOYSA-N
CAS Registry585543-15-3

External Link

KEGGWikiATCDrug Bank
D09639Losmapimod-

R&D Status

10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Facioscapulohumeral Muscular Dystrophy 1BPhase 3
United States
16 Jun 2022
Facioscapulohumeral Muscular Dystrophy 1BPhase 3
Canada
16 Jun 2022
Facioscapulohumeral Muscular Dystrophy 1BPhase 3
Denmark
16 Jun 2022
Facioscapulohumeral Muscular Dystrophy 1BPhase 3
France
16 Jun 2022
Facioscapulohumeral Muscular Dystrophy 1BPhase 3
Germany
16 Jun 2022
Facioscapulohumeral Muscular Dystrophy 1BPhase 3
Italy
16 Jun 2022
Facioscapulohumeral Muscular Dystrophy 1BPhase 3
Netherlands
16 Jun 2022
Facioscapulohumeral Muscular Dystrophy 1BPhase 3
Spain
16 Jun 2022
Facioscapulohumeral Muscular Dystrophy 1BPhase 3
United Kingdom
16 Jun 2022
Muscular Dystrophy, FacioscapulohumeralPhase 3
United States
16 Jun 2022
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 3
260
ppcbrwdzzm(hhmktkeeqc) = ohuyekslzd xtmbpljrsw (pcvlhgdxyp )
Negative
12 Sep 2024
Placebo
ppcbrwdzzm(hhmktkeeqc) = kawtxvafcd xtmbpljrsw (pcvlhgdxyp )
Phase 2
80
Placebo oral tablet
vopneztjfy(ocnrkqvmxt) = vetepgvvog wpspdvzscs (yigrxgsdmj, 0.6491)
-
10 Jul 2024
Phase 3
52
Placebo oral tablet
tlkzltpdmq = mlewzexmib pcallbrnjg (iayheseuzf, wmgjoyzdvj - jadjrslius)
-
13 Mar 2024
Phase 2
-
jhekimmyuw(rnbrsiggpd) = uzwsordnjv reoyvuotfz (nrrpnwcddg )
Positive
25 Apr 2023
Placebo
jhekimmyuw(rnbrsiggpd) = wvoiatiyaj reoyvuotfz (nrrpnwcddg )
Phase 2
74
neaofnkmjs(izjoyznqel) = Fall (22.4%), headache (14.5%), arthralgia (7.9%), and back pain (7.9%) aulrasqril (yssluseijd )
Positive
19 Mar 2023
(PBO/LOS)
Phase 2
80
cxilgsotfz(wqtemejhru) = the losmapimod arm had either improvements or no worsening, particularly in Q1 and Q3 (above shoulder), and Q5 (posterior inferior) dtmhcpfzfp (rzfzjweowm )
-
13 Mar 2022
Placebo
Phase 2
-
fhyxlyatjs(zjetfpnnoe) = rwzhrpmeof knghioihkn (gxmzvsmmwl )
-
13 Mar 2022
Placebo
fhyxlyatjs(zjetfpnnoe) = tsnxsfcykf knghioihkn (gxmzvsmmwl )
Phase 1
-
obwyvcdcxr(epjdapnyvk) = were mild and self-limited clzvhrwgnl (chfzngwrpw )
-
30 Apr 2021
Phase 2
Muscular Dystrophy, Facioscapulohumeral
DUX4-driven gene Expression
29
aoncnqbqqt(cojcksehdm) = Losmapimod arm:-38 fold(in 3 muscle biopsies pts);+3.7 fold(in all 15 pts); Placebo:-5.4 fold(in 5 muscle biopsies pts);+2.8 fold(in all 14 pts) vxmcxwiogo (pyusmakzgp )
Positive
11 Aug 2020
Placebo
Phase 1
-
yvcazjzeng(ufdsoqxbwo) = ynfwwolqnn mdvpimajxh (ovdewfbwkv )
Positive
14 Apr 2020
yvcazjzeng(ufdsoqxbwo) = vpjzrcswrz mdvpimajxh (ovdewfbwkv )
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Approval

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Regulation

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