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Abrocitinib

Phase 3FDA approved

Eczema | Small molecule | Dermatology |Pfizer, Inc.|Trials Updated: Sep 25, 2026

Development status

FDA approval on record Jan 14, 2022 as Cibinqo
Approval holderPfizer
ApplicationNDA213871
Highest phase Phase 3
Registered trials 10 across 1 sponsor since Sep 2020

Label indication CIBINQO is indicated for the treatment of adults and pediatric patients 12 years of age and older with refractory, moderate-to-severe atopic dermatitis whose disease is not adequately controlled with other systemic drug products, including biologics, or when use of those therapies is inadvisable. FDA label

Target and mechanism

Molecular targetJAK1
Target classInhibitor
ModalitySmall molecule

Also known as Abrocitinib tablet

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials9
Total Enrollment4,888

FDA Designations

No designations recorded

Clinical trial landscape

Abrocitinib · 9 trials · 6 indications

Phase 3 6Phase 2 1Phase 1 2
NCT07823595Abrocitinib Treatment of Atopic Dermatitis in Children 2 to Less Than 6 Years of AgeAtopic Dermatitis
NOT YET_RECRUITING90 Analytics
NCT06807281A Long-term Study of the Medicine Called Abrocitinib in Children Aged 2 Years and Older With Moderate to Severe EczemaAtopic Dermatitis
RECRUITING500 Analytics
NCT06807268A Study of the Medicine Called Abrocitinib in Children 6 to Less Than 12 Years of Age With Moderate-to-Severe EczemaEczema
RECRUITING150 Analytics
NCT05375929A Study to Learn About Abrocitinib Tablets in People With Atopic Dermatitis in IndiaAtopic Dermatitis
COMPLETED200 Analytics
NCT04345367Study of Abrocitinib Compared With Dupilumab in Adults With Moderate to Severe Atopic Dermatitis on Background Topical TherapyAtopic Dermatitis
COMPLETED727 Analytics
NCT03422822Study to Evaluate Efficacy and Safety of PF-04965842 With or Without Topical Medications in Subjects Aged 12 Years and Older With Moderate to Severe Atopic DermatitisDermatitis, Atopic
COMPLETED3,166 Analytics
PHASE3NOT YET_RECRUITING
Abrocitinib Treatment of Atopic Dermatitis in Children 2 to Less Than 6 Years of Age
Atopic DermatitisUnlock trial analytics
PHASE3RECRUITING
A Long-term Study of the Medicine Called Abrocitinib in Children Aged 2 Years and Older With Moderate to Severe Eczema
Atopic DermatitisUnlock trial analytics
PHASE3RECRUITING
A Study of the Medicine Called Abrocitinib in Children 6 to Less Than 12 Years of Age With Moderate-to-Severe Eczema
EczemaUnlock trial analytics
PHASE3COMPLETED
A Study to Learn About Abrocitinib Tablets in People With Atopic Dermatitis in India
Atopic DermatitisUnlock trial analytics
PHASE3COMPLETED
Study of Abrocitinib Compared With Dupilumab in Adults With Moderate to Severe Atopic Dermatitis on Background Topical Therapy
Atopic DermatitisUnlock trial analytics
PHASE3COMPLETED
Study to Evaluate Efficacy and Safety of PF-04965842 With or Without Topical Medications in Subjects Aged 12 Years and Older With Moderate to Severe Atopic Dermatitis
Dermatitis, AtopicUnlock trial analytics

Study Endpoints

Primary Endpoints

Response based on achieving validated Investigator's Global Assessment (vIGA) score of clear (0) or almost clear (1) (on a 5-point scale) and a reduction from baseline of ≥2 points at Week 12
Baseline, week 12

The difference in percentage of responders based on vIGA at Week 12 in participants with moderate-to-severe AD treated with abrocitinib versus placebo.

Response based on achieving ≥75% improvement from baseline in Eczema and Severity Index (EASI) at Week 12
Week 12

The difference in percentage of responders based on EASI-75 at Week 12 in participants with moderate-to-severe AD treated with abrocitinib versus placebo

Number of Participants with Treatment-Emergent Adverse Events (TEAEs), Serious Adverse Events (SAEs), and adverse events (AEs) that lead to study discontinuation
0-24 months

The number of the treatment emergent adverse events, serious adverse events and adverse events leading to discontinuation among patients with moderate-to-severe disease treated with abrocitinib regardless of discontinuation from study treatment.

Response based on achieving ≥75% improvement from baseline in the Eczema Area and Severity Index (EASI)-75 at Week 12
At week 12

The difference in proportion of responders based on EASI-75 at Week 12 in patients with moderate-to-severe AD treated with abrocitinib versus placebo

Number of Participants With Adverse Events (AEs) and Serious AEs (SAEs): Main Study
From Day 1 of dosing up to 4 weeks post last dose (maximum up to Week 16)

An AE was any untoward medical occurrence in a participant or clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly; was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic or other situations where medical or scientific judgement should be exercised by investigator. AEs included SAEs and all non-SAEs.

Percentage of Participants Achieving Greater Than or Equal to (>=) 4 Points Improvement in Peak Pruritus Numerical Rating Scale (PP-NRS4) From Baseline at Week 2
Week 2

The severity of itch (pruritus) due to atopic dermatitis (AD) was assessed using the PP-NRS, a validated horizontal NRS. Participants were asked to assess their worst itching due to AD over the past 24 hours on an NRS with scale ranging from 0 to 10, where 0= no itch and 10= worst itch imaginable. Higher scores indicated worse itch.

Percentage of Participants Achieving >= 90% Improvement From Baseline in Eczema Area and Severity Index (EASI-90) Response at Week 4
Week 4

EASI quantifies severity of AD based on severity of lesion clinical signs and percentage (%) of body surface area (BSA) affected. Severity of clinical signs of AD lesions (erythema, induration/papulation, excoriation and lichenification) were scored separately for each of 4 body regions (head and neck, upper limbs, trunk \[including axillae and groin)\] and lower limbs \[including buttocks\]) on a 4-point scale: 0= absent; 1= mild; 2= moderate; 3= severe. EASI area score was based on % BSA with AD in body region: 0 (0%), 1 (\>0 to \<10%), 2 (10 to \<30%), 3 (30 to \<50%), 4 (50 to \<70%), 5 (70 to \<90%) and 6 (90 to 100%). Total EASI score =0.1\*Ah\*(Eh+Ih+Exh+Lh) + 0.2\*Au\*(Eu+Iu+ExU+Lu) + 0.3\*At\*(Et+It+Ext+Lt) + 0.4\*Al\*(El+Il+Exl+Ll); A = EASI area score; E = erythema; I = induration/papulation; Ex = excoriation; L = lichenification; h = head and neck; u = upper limbs; t = trunk; l = lower limbs. Total EASI score ranged from 0.0 to 72.0, with higher scores indicating greater severity of AD.

Treatment emergent adverse events
Throughout study regardless of availability of commercial product until at least 2024, or until the sponsor terminates the study; an estimated maximum of 8 years

The incidence of treatment emergent adverse events

Serious adverse events and adverse events leading to discontinuation
Throughout study regardless of availability of commercial product until at least 2024, or until the sponsor terminates the study; an estimated maximum of 8 years

The incidence of serious adverse events and adverse events leading to discontinuation

Change from baseline in clinical laboratory values
Throughout study regardless of availability of commercial product until at least 2024, or until the sponsor terminates the study; an estimated maximum of 8 years
Change from baseline in electrocardiogram (ECG) measurements
Throughout study regardless of availability of commercial product until at least 2024, or until the sponsor terminates the study; an estimated maximum of 8 years
Change from baseline in vital signs
Throughout study regardless of availability of commercial product until at least 2024, or until the sponsor terminates the study; an estimated maximum of 8 years
Changes in Cutaneous Sarcoidosis Activity and Morphology Instrument (CASMI) score
Baseline and 6 Months

Improvement in the Cutaneous Sarcoidosis Activity and Morphology Instrument (CSAMI) after 6 months of abrocitinib therapy. CSAMI is a validated clinical scoring tool for cutaneous sarcoidosis activity and severity. Scores range from 0 to 165. Higher score is worse.

Area Under the Plasma Concentration-Time Profile From Time 0 Extrapolated to Infinite Time (AUCinf) of Omeprazole
Pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 12, 16, 24, 48, 72 hour post-dose on Day 1 Period 1 and Day 8 Period 2

AUCinf was defined as area under the plasma concentration-time profile from time 0 extrapolated to infinite time.

AUCinf Corrected for Residual Concentrations (AUCinfCR) of Caffeine
Pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 12, 16, 24, 48, 72 hour post-dose on Day 1 Period 1 and Day 8 Period 2

AUCinfCR was defined as AUCinf corrected for residual concentrations. AUCinf was defined as area under the plasma concentration-time profile from time 0 extrapolated to infinite time. Two participants in Period 1 and 1 participant in Period 2 had pre-dose caffeine concentrations that were greater than 5% of the corresponding maximum plasma concentration (Cmax). Therefore, AUCinf was corrected for the residual concentrations for these participants.

Area Under the Plasma Concentration-Time Profile From Time 0 to the Time of the Last Quantifiable Concentration Corrected for Residual Concentrations (AUClastCR) of Efavirenz
Pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 12, 16, 24, 48, 72 hour post-dose on Day 1 Period 1 and Day 8 Period 2

AUClastCR was defined as AUClast corrected for residual concentrations. AUClast was defined as area under the plasma concentration-time profile from time 0 to the time of the last quantifiable concentration. Eight participants in Period 2 had pre-dose efavirenz concentrations that were greater than 5% of the corresponding Cmax. Therefore, AUClast was corrected for the residual concentrations for these participants.

AUCinf of Abrocitinib Following the Administration of Abrocitinib Commercial Tablet, Abrocitinib Oral Suspension Formulation 1 or Famotidine Plus Abrocitinib Commerical Tablet
0 (pre-dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 12, 24, 36, and 48 hours post-dose on Day 1 of each period.

Area under the plasma concentration time profile from time 0 extrapolated to infinity (AUCinf) was measured. The adjusted mean differences and 90% confidence intervals (CIs) for the differences were exponentiated to provide estimates of the ratio of adjusted geometric means (Test/Reference) and 90% CIs for the ratios.

Cmax of Abrocitinib Following the Administration of Abrocitinib Commercial Tablet, Abrocitinib Oral Suspension Formulation 1 or Famotidine Plus Abrocitinib Commerical Tablet
0 (pre-dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 12, 24, 36, and 48 hours post-dose on Day 1 of each period.

Maximum observed plasma concentration (Cmax) was measured. The adjusted mean differences and 90% CIs for the differences were exponentiated to provide estimates of the ratio of adjusted geometric means (Test/Reference) and 90% CIs for the ratios.

Assessment of Overall Liking After Administering Each Abrocitinib Oral Suspension Formulation (Formulation [F]1-F6) in Part B
0 Hours, 5, 10, 20 min after swallowing the suspension on Day 1 of each period.

For the taste assessment in Part B of the study, the data used in the analysis was transcribed and rescaled to a score from 0 to 100 from the raw measurements on the Taste Assessment Questionnaire. The score of 0 was considered Favorable and the score of 100 was considered Not Favorable. Higher score means more unfavorable.

Assessment of Mouth Feel After Administering Each Abrocitinib Oral Suspension Formulation (F1-F6) in Part B
0 Hours, 5, 10, 20 min after swallowing the suspension on Day 1 of each period.

For the taste assessment in Part B of the study, the data used in the analysis was transcribed and rescaled to a score from 0 to 100 from the raw measurements on the Taste Assessment Questionnaire. The score of 0 was considered Favorable and the score of 100 was considered Not Favorable. Higher score means more unfavorable.

Assessment of Bitterness After Administering Each Abrocitinib Oral Suspension Formulation (F1-F6) in Part B
0 Hours, 5, 10, 20 min after swallowing the suspension on Day 1 of each period.

For the taste assessment in Part B of the study, the data used in the analysis was transcribed and rescaled to a score from 0 to 100 from the raw measurements on the Taste Assessment Questionnaire. The score of 0 was considered Favorable and the score of 100 was considered Not Favorable. Higher score means more unfavorable.

Assessment of Tongue/Mouth Burn After Administering Each Abrocitinib Oral Suspension Formulation (F1-F6) in Part B
0 Hours, 5, 10, 20 min after swallowing the suspension on Day 1 of each period.

For the taste assessment in Part B of the study, the data used in the analysis was transcribed and rescaled to a score from 0 to 100 from the raw measurements on the Taste Assessment Questionnaire. The score of 0 was considered Favorable and the score of 100 was considered Not Favorable. Higher score means more unfavorable.

Assessment of Salty Taste After Administering Each Abrocitinib Oral Suspension Formulation (F1-F6) in Part B
0 Hours, 5, 10, 20 min after swallowing the suspension on Day 1 of each period.

For the taste assessment in Part B of the study, the data used in the analysis was transcribed and rescaled to a score from 0 to 100 from the raw measurements on the Taste Assessment Questionnaire. The score of 0 was considered Favorable and the score of 100 was considered Not Favorable. Higher score means more unfavorable.

Assessment of Sour Taste After Administering Abrocitinib Oral Suspension Formulation (F1-F6) in Part B
0 Hours, 5, 10, 20 min after swallowing the suspension on Day 1 of each period.

For the taste assessment in Part B of the study, the data used in the analysis was transcribed and rescaled to a score from 0 to 100 from the raw measurements on the Taste Assessment Questionnaire. The score of 0 was considered Favorable and the score of 100 was considered Not Favorable. Higher score means more unfavorable.

Assessment of Sweet Taste After Administering Abrocitinib Oral Suspension Formulation (F1-F6) in Part B
0 Hours, 5, 10, 20 min after swallowing the suspension on Day 1 of each period.

For the taste assessment in Part B of the study, the data used in the analysis was transcribed and rescaled to a score from 0 to 100 from the raw measurements on the Taste Assessment Questionnaire. The score of 0 was considered Favorable and the score of 100 was considered Not Favorable. Higher score means more unfavorable.

Secondary Endpoints

Change from baseline (CFB) in the Worst Scratch/Itch Numerical Rating Scale (WSI-NRS) at Week 2
Baseline, Week 2
Response based on achieving at least a 4-point improvement from baseline in the WSI-NRS at Week 12
Week 12
Response based on achieving WSI-NRS <2 at Week 12
Week 12
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
AbrocitinibEXPERIMENTALParticipants will receive liquid oral suspension of Abrocitinib.
Matching PlaceboPLACEBO_COMPARATORParticipants will receive liquid oral suspension of matching placebo.
ExtensionEXPERIMENTALPatients who have completed other abrocitinib studies
De novoEXPERIMENTALPatients who have not participated other abrocitinib studies
Abrocitinib 100 mgEXPERIMENTALParticipants will receive abrocitinib 100 mg by mouth (QD).
Abrocitinib 200 mgEXPERIMENTALParticipants will receive abrocitinib 200 mg QD.
Abrocitinib 200 mg plus placebo injectionEXPERIMENTALAbrocitinib 200 mg daily through Week 26, plus placebo injections every other week through Week 24
Dupilumab 300 mg plus placebo tabletsACTIVE_COMPARATORDupilumab 300 mg every other week (2 injections on Day 1) through Week 24, plus placebo tablets daily through Week 26
Abrocitinib 200 mg dailyEXPERIMENTAL6 months of treatment with abrocitinib 200 mg daily
Period 1OTHERIn Period 1, all the participants will receive single doses of the probe drugs, including caffeine 100 mg, efavirenz 50 mg and omeprazole 10 mg, together on Day 1.
Period 2OTHERIn Period 2, participants will receive abrocitinib 200 mg once daily (QD) on Day 1-10, single dose of omeprazole on Day 2 and single dose of probe drugs together on Day 8.
Part A: Abrocitinib TabletEXPERIMENTAL -
Part A: Abrocitinib Suspension F1EXPERIMENTAL -
Part A: Abrocitinib Tablet + FamotidineEXPERIMENTAL -
Part B: Abrocitinib Suspension F1EXPERIMENTAL -
Part B: Abrocitinib Suspension F2EXPERIMENTAL -
Part B: Abrocitinib Suspension F3EXPERIMENTAL -
Part B: Abrocitinib Suspension F4EXPERIMENTAL -
Part B: Abrocitinib Suspension F5EXPERIMENTAL -
Part B: Abrocitinib Suspension F6EXPERIMENTAL -
Part B: Abrocitinib Suspension F1 + FamotidineEXPERIMENTAL -
Part B: Abrocitinib Suspension F2 + FamotidineEXPERIMENTAL -
Part B: Abrocitinib Suspension F3 + FamotidineEXPERIMENTAL -
Part B: Abrocitinib Suspension F4 + FamotidineEXPERIMENTAL -
Part B: Abrocitinib Suspension F5 + FamotidineEXPERIMENTAL -
Part B: Abrocitinib Suspension F6 + FamotidineEXPERIMENTAL -

Interventions

NameTypeDescription
AbrocitinibDRUGAdministered orally
PlaceboDRUGAdministered orally
Abrocitinib 100 mgDRUGOrally administered, abrocitinib 100 mg tablets QD
Abrocitinib 200 mgDRUGOrally administered, abrocitinib 200 mg tablets QD.
Dupilumab 300 mgCOMBINATION_PRODUCTDupilumab 300 mg administered as a single subcutaneous injection every other week for 24 weeks (2 injections on day 1). Placebo tablets will be administered daily.
OmeprazoleDRUGsingle doses of 10 mg
CaffeineDRUGsingle dose of 100 mg
EfavirenzDRUGsingle doses of 50 mg
Abrocitinib tabletDRUGSingle dose of abrocitinib 200 mg tablet will be administered after an overnight fast of at least 10 hours.
Abrocitinib Suspension F1DRUGSingle dose of abrocitinib 200 mg oral suspension formulation 1 will be administered after an overnight fast of at least 10 hours.
Abrocitinib Suspension F2DRUGSingle dose of abrocitinib 200 mg oral suspension formulation 2 will be administered after an overnight fast of at least 10 hours.
Abrocitinib Suspension F3DRUGSingle dose of abrocitinib 200 mg oral suspension formulation 3 will be administered after an overnight fast of at least 10 hours.
Abrocitinib Suspension F4DRUGSingle dose of abrocitinib 200 mg oral suspension formulation 4 will be administered after an overnight fast of at least 10 hours.
Abrocitinib Suspension F5DRUGSingle dose of abrocitinib 200 mg oral suspension formulation 5 will be administered after an overnight fast of at least 10 hours.
Abrocitinib Suspension F6DRUGSingle dose of abrocitinib 200 mg oral suspension formulation 6 will be administered after an overnight fast of at least 10 hours.
FamotidineDRUGSingle dose of famotidine 40 mg tablet administered 2 hours prior to abrocitinib formulations under fasted conditions.
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Eligibility Criteria

Age Range2 Years to 5 Years
SexALL
Healthy VolunteersNo

Inclusion Criteria: • Children aged 2 to \<6 years at the time of informed consent /assent. Disease Characteristics: * All participants must meet all of the following criteria: * A documented diagnosis of chronic AD for at least 1 year prior to screening and confirmed at screening and baseline vi...

Countries:United StatesChinaHungaryJapanMexicoPolandSpainGermanyIndiaAustraliaBulgariaCanadaChileFinlandItalyLatviaSlovakiaSouth KoreaTaiwanArgentinaBelgiumBrazilCzechiaIsraelNetherlandsRomaniaRussiaSerbiaUnited Kingdom
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Recent Changes (Last 90 Days)

LOWSep 25, 2026NCT06807281lastUpdatePostDate: changed
LOWSep 25, 2026NCT06807268lastUpdatePostDate: changed
LOWSep 25, 2026NCT06807281lastUpdatePostDate: changed
LOWSep 25, 2026NCT06807268lastUpdatePostDate: changed
LOWSep 16, 2026NCT07823595NEW_TRIAL: changed
LOWSep 16, 2026NCT07823595NEW_TRIAL: changed
LOWSep 4, 2026NCT06807268lastUpdatePostDate: changed
LOWSep 4, 2026NCT06807281lastUpdatePostDate: changed
LOWSep 4, 2026NCT06807268lastUpdatePostDate: changed
LOWSep 4, 2026NCT06807281lastUpdatePostDate: changed
LOWAug 17, 2026NCT06807268lastUpdatePostDate: changed
LOWAug 17, 2026NCT06807281lastUpdatePostDate: changed
LOWAug 17, 2026NCT06807268lastUpdatePostDate: changed
LOWAug 17, 2026NCT06807281lastUpdatePostDate: changed
LOWJul 22, 2026NCT06807281lastUpdatePostDate: changed
LOWJul 22, 2026NCT06807268lastUpdatePostDate: changed
LOWJul 22, 2026NCT06807281lastUpdatePostDate: changed

Frequently asked questions about Abrocitinib

What is abrocitinib used for?

Abrocitinib is being studied for the treatment of atopic dermatitis and eczema, including moderate to severe forms in children and adults. It is also being investigated in sarcoidosis. The drug is an oral small molecule developed by Pfizer and is currently in Phase 3 clinical development for atopic dermatitis.

What does abrocitinib target?

Abrocitinib targets Janus kinase 1, or JAK1. It is a JAK1 inhibitor, meaning it works by blocking the activity of this enzyme, which plays a role in inflammatory signaling pathways. This mechanism is being explored for inflammatory skin conditions such as atopic dermatitis and eczema.

Who makes abrocitinib?

Abrocitinib is developed by Pfizer, Inc., which trades on the New York Stock Exchange under the ticker PFE. Pfizer is the sponsor of the clinical trials evaluating abrocitinib in atopic dermatitis, eczema, and sarcoidosis.

What phase is abrocitinib in?

Abrocitinib is in Phase 3 clinical development. It has been studied in five trials, with three completed and two currently active. The Phase 3 trials focus on atopic dermatitis and eczema in pediatric patients, while a Phase 2 trial in sarcoidosis has been completed.

What clinical trials is abrocitinib in?

Abrocitinib is being evaluated in several clinical trials, including NCT07823595, a Phase 3 study in children aged 2 to less than 6 years with atopic dermatitis; NCT06807281, a long-term Phase 3 study in children aged 2 years and older with moderate to severe eczema; and NCT06807268, a Phase 3 study in children 6 to less than 12 years with moderate-to-severe eczema. A completed Phase 2 trial, NCT05696795, studied JAK inhibition in sarcoidosis.