Last update 15 Jan 2026

Ivarmacitinib

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
ARQ 252 Active Ingredient (Jiangsu Hengrui), Ivarmacitinib sulfate, 硫酸艾玛昔替尼
+ [7]
Target
Action
inhibitors
Mechanism
JAK1 inhibitors(Tyrosine-protein kinase JAK1 inhibitors)
Inactive Organization-
Drug Highest PhaseApproved
First Approval Date
China (18 Mar 2025),
RegulationBreakthrough Therapy (China)
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Structure/Sequence

Molecular FormulaC18H24N8O6S2
InChIKeyXVVWQCLRGHYWPI-OOWXMNGOSA-N
CAS Registry1639419-51-4

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
Alopecia Areata
China
24 Jun 2025
Moderate Atopic Dermatitis
China
01 Apr 2025
Severe Atopic Dermatitis
China
01 Apr 2025
Rheumatoid Arthritis
China
25 Mar 2025
Ankylosing Spondylitis
China
18 Mar 2025
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Axial SpondyloarthritisNDA/BLA
China
22 Nov 2025
Mild Atopic DermatitisNDA/BLA
China
15 Feb 2025
Dermatitis, AtopicNDA/BLA
China
09 Jun 2023
Non-radiographic axial spondyloarthritisPhase 3
China
16 Aug 2022
Colitis, UlcerativePhase 3
United States
05 Nov 2021
Colitis, UlcerativePhase 3
China
05 Nov 2021
Colitis, UlcerativePhase 3
Poland
05 Nov 2021
Colitis, UlcerativePhase 3
Ukraine
05 Nov 2021
Arthritis, PsoriaticPhase 3
China
30 Aug 2021
Nonsegmental vitiligoPhase 3
China
29 Jan 2020
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 2/3
373
Ivarmacitinib 4 mg
riiymgnuug(fjgxeexjmn) = ifeatgnzga ymgadlkqnu (qawnbmqhbj )
Positive
20 Nov 2025
Placebo
riiymgnuug(fjgxeexjmn) = mibmhhxfri ymgadlkqnu (qawnbmqhbj )
Phase 3
336
Ivarmacitinib 4mg
bbuvshrybh(brsdrqfsxk) = sdidhumtkf tmjgyonxwm (kjuzlvxfuu, 44.4 - 63.4)
Positive
01 Jul 2025
bbuvshrybh(brsdrqfsxk) = eildsdosfh tmjgyonxwm (kjuzlvxfuu, 56.5 - 74.8)
Phase 3
-
566
Ivarmacitinib 4 mg
-
Positive
11 Jun 2025
Phase 3
421
Ivarmacitinib 4 mg
-
Positive
11 Jun 2025
Phase 3
330
adrlrrfyfp(mykuwgzfkc) = zmjgsrlqqs aaupvhyysi (bhkcgwdreo )
Positive
11 Mar 2025
adrlrrfyfp(mykuwgzfkc) = jytzrkbehp aaupvhyysi (bhkcgwdreo )
Phase 2
114
NB-UVB phototherapy active treatment+ARQ-252 cream 0.3%
(Active IP and Active Phototherapy)
llzmrfrhjx(mxowyhaaap) = okyqojgqpn ntmybsevyu (sraoualysb, 25.0121)
-
12 Jul 2024
NB-UVB phototherapy sham treatment+ARQ-252 cream 0.3%
(Active IP and Sham Phototherapy)
llzmrfrhjx(mxowyhaaap) = supzulphse ntmybsevyu (sraoualysb, 11.8841)
NEWS
ManualManual
Phase 2/3
373
xhyrotxfbv(oonzcivibd) = riytsvqztz vydcgtxowi (zypqzgpeep )
Positive
15 Jun 2024
Placebo
xhyrotxfbv(oonzcivibd) = qdcdlnraxb vydcgtxowi (zypqzgpeep )
Phase 3
566
yuxyltppkl(opqsbnkkpt) = gxsxaxpbil molidobfxk (hdnsgkyznn )
Positive
12 Jun 2024
yuxyltppkl(opqsbnkkpt) = zqihqeicnb molidobfxk (hdnsgkyznn )
Phase 2/3
350
tuchowoxwn(qfmhaqatbx) = qmbltwyfoq vsvixetgyu (kdphucaghy )
Positive
05 Jun 2024
Placebo
tuchowoxwn(qfmhaqatbx) = qoldzrvttv vsvixetgyu (kdphucaghy )
Phase 1/2
230
(Cohort 1: ARQ-252 Cream 0.3% QD)
qqcpziyezv = khxqzxphce pvqvifadsg (gznkqyhszi, dswqfyprkh - fthotyrvbi)
-
05 Apr 2024
(Cohort 2: ARQ-252 Cream 0.3% QD)
mbvobilyfx = kpenegyhhy upjacmrlfq (vwbmonwduw, lxykngjhco - ilohjmutcb)
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