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tapinarof, 1%

Phase 3

Plaque Psoriasis | Small molecule | Dermatology |Organon & Co.|Last Updated: Aug 12, 2026

Target and mechanism

ModalitySmall molecule

Also known as Tapinarof, tapinarof cream, 1%, Tapinarof cream, 1%

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials5
Total Enrollment1,867

FDA Designations

No designations recorded

Clinical trial landscape

tapinarof, 1% · 10 trials · 2 indications

Phase 3 8Phase 2 2
NCT07265479A Study to Investigate Safety and Efficacy of Tapinarof Cream, 1% in Participants Ages 3 Months to < 24 Months With Atopic DermatitisAtopic Dermatitis
ACTIVE NOT_RECRUITING187 Analytics
NCT05172726Tapinarof for the Treatment of Plaque Psoriasis in Pediatric SubjectsPlaque Psoriasis
ACTIVE NOT_RECRUITING58 Analytics
NCT05142774Long Term Extension Study of Tapinarof Cream, 1% for Subjects With Atopic DermatitisAtopic Dermatitis
COMPLETED728 Analytics
NCT05032859Tapinarof for the Treatment of Atopic Dermatitis in Children and Adults (DMVT-505-3102)Atopic Dermatitis
COMPLETED406 Analytics
NCT05014568Tapinarof for the Treatment of Atopic Dermatitis in Children and AdultsAtopic Dermatitis
COMPLETED407 Analytics
NCT04053387Long Term Extension Study of Tapinarof for Plaque Psoriasis in Adults (3003)Plaque Psoriasis
COMPLETED763 Analytics
NCT03983980Tapinarof for the Treatment of Plaque Psoriasis in Adults (3002)Plaque Psoriasis
COMPLETED515 Analytics
NCT03956355Tapinarof for the Treatment of Plaque Psoriasis in Adults (3001)Plaque Psoriasis
COMPLETED510 Analytics
PHASE3ACTIVE NOT_RECRUITING
A Study to Investigate Safety and Efficacy of Tapinarof Cream, 1% in Participants Ages 3 Months to < 24 Months With Atopic Dermatitis
Atopic DermatitisUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
Tapinarof for the Treatment of Plaque Psoriasis in Pediatric Subjects
Plaque PsoriasisUnlock trial analytics
PHASE3COMPLETED
Long Term Extension Study of Tapinarof Cream, 1% for Subjects With Atopic Dermatitis
Atopic DermatitisUnlock trial analytics
PHASE3COMPLETED
Tapinarof for the Treatment of Atopic Dermatitis in Children and Adults (DMVT-505-3102)
Atopic DermatitisUnlock trial analytics
PHASE3COMPLETED
Tapinarof for the Treatment of Atopic Dermatitis in Children and Adults
Atopic DermatitisUnlock trial analytics
PHASE3COMPLETED
Long Term Extension Study of Tapinarof for Plaque Psoriasis in Adults (3003)
Plaque PsoriasisUnlock trial analytics
PHASE3COMPLETED
Tapinarof for the Treatment of Plaque Psoriasis in Adults (3002)
Plaque PsoriasisUnlock trial analytics
PHASE3COMPLETED
Tapinarof for the Treatment of Plaque Psoriasis in Adults (3001)
Plaque PsoriasisUnlock trial analytics

Study Endpoints

Primary Endpoints

Percentage of participants who have a validated Investigator Global Assessment for Atopic Dermatitis (vIGA-AD) score of clear or almost clear (0 or 1) and a minimum 2-grade Improvement from Baseline to Week 8
Baseline to last planned visit in the Double-Blind Period, up to 8 weeks.

The vIGA-AD is a global assessment of the current state of the disease. It is a static 5-point scale used to grade overall disease severity (scalp excluded), as determined by the investigator, using the clinical characteristics of erythema, induration/papulation, lichenification, oozing/crusting. The vIGA-AD ranges from 0 to 4 and is reported as Clear (0), Almost clear (1), Mild (2), Moderate (3), and Severe (4). Higher vIGA-AD scores represent more severe disease.

Percentage of participants who enter with or achieve have a validated Investigator Global Assessment for Atopic Dermatitis (vIGA-AD) score of clear or almost clear (0 or 1) and a minimum 2-grade Improvement at least once during the Open-Label Period
Baseline to the end of the Open-Label Period, up to 56 weeks.

The vIGA-AD is a clinical tool for assessing the current state/severity of a subject's atopic dermatitis at a given timepoint.. It is a static 5-point scale used to grade overall disease severity (scalp excluded), as determined by the investigator, using the clinical characteristics of erythema, induration/papulation, lichenification, oozing/crusting. The vIGA-AD ranges from 0 to 4 and is reported as Clear (0), Almost clear (1), Mild (2), Moderate (3), and Severe (4). Higher vIGA-AD scores represent more severe disease.

Adverse Events (AEs) and Serious Adverse Events (SAEs)
Screening up to Week 53

Incidence, frequency, and duration of treatment emergent AEs and SAEs

Number of subjects with clinically significant laboratory test abnormalities
Screening up to Week 53
Number of subjects with clinically significant vital signs abnormalities
Screening up to Week 53
Investigator-Assessed Local Tolerability Scale (LTS) Scores
Baseline up to Week 52

Local Tolerability Scale (LTS) is a clinical tool for assessing the presence and overall degree of irritation at the application sites, according to a 5-point scale (0-4). Higher LTS scores represent more severe irritation.

Subject (or Caregiver)-Assessed Local Tolerability Scale (LTS)
Baseline up to Week 52

Local Tolerability Scale (LTS) is a clinical tool for assessing the presence and overall degree of irritation at the application sites, according to a 5-point scale (0-4). Higher LTS scores represent more severe irritation.

Number of Subjects With Treatment-Emergent Adverse Events (TEAE) and Serious Adverse Events
Baseline to Week 49

For rollover subjects, all AEs reported in this extension study were considered as TEAEs except for those AEs ongoing at the end of previous studies but resolved prior to the Visit 1 date for this extension study. For direct-enrolling subjects, all AEs that start after the first dose of study drug will be considered a TEAE.

Frequency of Adverse Events and Serious Adverse Events
Baseline to Week 49

All AEs reported in this extension study were considered as TEAEs except for those AEs ongoing at the end of previous studies but resolved prior to the Visit 1 date for this extension study. Subjects could have reported more than one TEAE.

Change From Baseline in Clinical Laboratory Values (g/L)
Baseline to Week 48

The mean chemistry and hematology parameters were assessed for changes and trends over the course of the study.

Change From Baseline in Clinical Laboratory Values (U/L)
Baseline to Week 48

The mean chemistry parameters were assessed for changes and trends over the course of the study.

Change From Baseline in Clinical Laboratory Values (mmol/L)
Baseline to Week 48

The mean chemistry parameters were assessed for changes and trends over the course of the study.

Change From Baseline in Clinical Laboratory Values (Umol/L)
Baseline to Week 48

The mean chemistry parameters were assessed for changes and trends over the course of the study.

Change From Baseline in Clinical Laboratory Values (10^9 Cells/L)
Baseline to Week 48

The mean hematology parameters were assessed for changes and trends over the course of the study.

Change From Baseline in Clinical Laboratory Values (%)
Baseline to Week 48

The mean hematology parameters were assessed for changes and trends over the course of the study.

Change From Baseline in Clinical Laboratory Values (L/L)
Baseline to Week 48

The hematology parameter, Hematocrit, was assessed for changes and trends over the course of the study.

Change From Baseline in Clinical Laboratory Values (pg)
Baseline to Week 48

The hematology parameter, Ery. Mean Corpuscular Hemoglobin was assessed for changes and trends over the course of the study.

Change From Baseline in Clinical Laboratory Values (fl)
Baseline to Week 48

The hematology parameter, Ery. Mean Corpuscular Volume, was assessed for changes and trends over the course of the study.

Change From Baseline in Clinical Laboratory Values (10^12 Cells/L)
Baseline to Week 48

The hematology parameter, Erythrocytes, was assessed for changes and trends over the course of the study.

Complete Disease Clearance During LTE: Number of Subjects Achieving Disease Clearance vIGA-AD =0 (Clear) While on Therapy for Subjects Entered LTE vIGA-AD ≥ 1 (Almost Clear )
Baseline to Week 48

The vIGA-AD is a clinical tool for assessing the current state/severity of a subject's atopic dermatitis at a given timepoint. It is a static 5-point (0-4) morphological assessment of overall disease severity (scalp excluded), as determined by the investigator, using the clinical characteristics of erythema, induration/papulation, lichenification, oozing/crusting. Higher vIGA-AD scores represents more severe disease.

Response During LTE: Number of Subjects Achieving vIGA-AD =0 or 1 (Clear or Almost Clear) While on Therapy for Subjects Who Entered LTE With vIGA-AD ≥ 2 (Mild)
Baseline to Week 48

The vIGA-AD is a clinical tool for assessing the current state/severity of a subject's atopic dermatitis at a given timepoint. It is a static 5-point (0-4) morphological assessment of overall disease severity (scalp excluded), as determined by the investigator, using the clinical characteristics of erythema, induration/papulation, lichenification, oozing/crusting. Higher vIGA-AD scores represents more severe disease.

Absolute Change From Baseline in %BSA Affected
Baseline to Week 48

Subjects received treatment with tapinarof intermittently guided by disease severity. This outcome measure assesses the change from baseline in %BSA affected in all subjects, including those on and those off therapy. Assessment of BSA with Atopic Dermatitis was estimated by means of the handprint method, where the full palmar hand of the participant (fully extended palm, fingers and thumb together) represented approximately 1% of the total BSA. Body regions are assigned specific number of handprints with percentage \[Head and neck = 10% (10 handprints), upper extremities = 20% (20 handprints), Trunk (including axillae and groin) = 30% (30 handprints), lower extremities (including buttocks) = 40% (40 handprints)\]. Lesions on the scalp will not be included in the calculation of %BSA affected. Estimates of the % involvement in each body region will be multiplied by the fraction of total body area to obtain the total %BSA involved by region and overall.

Percent Change From Baseline in %BSA Affected
Baseline to Week 48

Subjects received treatment with tapinarof intermittently guided by disease severity. This outcome measure assesses the % change from baseline in %BSA affected in all subjects, including those on and those off therapy. Assessment of BSA with Atopic Dermatitis was estimated by means of the handprint method, where the full palmar hand of the participant (fully extended palm, fingers and thumb together) represented approximately 1% of the total BSA. Body regions are assigned specific number of handprints with percentage \[Head and neck = 10% (10 handprints), upper extremities = 20% (20 handprints), Trunk (including axillae and groin) = 30% (30 handprints), lower extremities (including buttocks) = 40% (40 handprints)\]. Lesions on the scalp will not be included in the calculation of %BSA affected. Estimates of the % involvement in each body region will be multiplied by the fraction of total body area to obtain the total %BSA involved by region and overall.

Mean Change From Baseline in Eczema Area and Severity Index (EASI) Score
Baseline to Week 48

Subjects received treatment with tapinarof intermittently guided by disease severity. This outcome measure assesses the change from baseline in EASI score in all subjects, including those on and those off therapy. The EASI scoring system is a clinical tool that quantifies the severity of a subject's AD based on both lesion severity and %BSA affected. The EASI is a composite score ranging from 0 to 72 that takes into account the degree of erythema, edema/papulation, excoriation, and lichenification (each scored from 0 to 3 separately) for each of four body regions, with adjustment for the %BSA involved for each body region relative to the whole body. The subject's scalp is excluded from this assessment. Higher EASI scores indicate more severe disease.

Percent Change From Baseline in Eczema Area and Severity Index (EASI) Score
Baseline to Week 48

Subjects received treatment with tapinarof intermittently guided by disease severity. This outcome measure assesses the % change from baseline in EASI score in all subjects, including those on and those off therapy. The EASI scoring system is a clinical tool that quantifies the severity of a subject's AD based on both lesion severity and %BSA affected. The EASI is a composite score ranging from 0 to 72 that takes into account the degree of erythema, edema/papulation, excoriation, and lichenification (each scored from 0 to 3 separately) for each of four body regions, with adjustment for the %BSA involved for each body region relative to the whole body. The subject's scalp is excluded from this assessment. Higher EASI scores indicate more severe disease.

Percent of Subjects With ≥ 50% Improvement in Eczema Area and Severity Index (EASI) From Baseline at Week 48.
Baseline to Week 48

The EASI scoring system is a clinical tool that quantifies the severity of a subject's AD based on both lesion severity and %BSA affected. The EASI is a composite score ranging from 0 to 72 that takes into account the degree of erythema, edema/papulation, excoriation, and lichenification (each scored from 0 to 3 separately) for each of four body regions, with adjustment for the %BSA involved for each body region relative to the whole body. Higher EASI scores indicate more severe disease.

Percent of Subjects With ≥ 75% Improvement in Eczema Area and Severity Index (EASI) From Baseline at Week 48.
Baseline to Week 48

The EASI scoring system is a clinical tool that quantifies the severity of a subject's AD based on both lesion severity and %BSA affected. The EASI is a composite score ranging from 0 to 72 that takes into account the degree of erythema, edema/papulation, excoriation, and lichenification (each scored from 0 to 3 separately) for each of four body regions, with adjustment for the %BSA involved for each body region relative to the whole body. The subject's scalp is excluded from this assessment. Higher EASI scores indicate more severe disease.

Percent of Subjects With ≥ 90% Improvement in Eczema Area and Severity Index (EASI) From Baseline at Week 48.
Baseline to Week 48

The EASI scoring system is a clinical tool that quantifies the severity of a subject's AD based on both lesion severity and %BSA affected. The EASI is a composite score ranging from 0 to 72 that takes into account the degree of erythema, edema/papulation, excoriation, and lichenification (each scored from 0 to 3 separately) for each of four body regions, with adjustment for the %BSA involved for each body region relative to the whole body. The subject's scalp is excluded from this assessment. Higher EASI scores indicate more severe disease.

Mean Change in Peak Pruritis-Numeric Rating Scale (PP-NRS) From Baseline
Baseline to Week 48

The Peak Pruritus Numeric Rating Scale (PP-NRS) is used to quickly assess itch/pruritus severity over a 24-hour period. The PP-NRS is scored on a scale of 0 to 10, with 0 being "no itch" and 10 being "worst itch imaginable". The subject or caregiver will utilize the scale to assess peak pruritis once per day and record the results in their diaries. The daily ratings are averaged to generate a score for the week.

Number of Subjects With a Baseline Peak Pruritis-Numeric Rating Scale (PP-NRS) Score ≥ 4 Who Achieve ≥ 4-point Reduction in the PP-NRS From Baseline
Baseline to Week 48

The Peak Pruritus Numeric Rating Scale (PP-NRS) is used to quickly assess itch/pruritus severity over a 24-hour period. The PP-NRS is scored on a scale of 0 to 10, with 0 being "no itch" and 10 being "worst itch imaginable". The subject or caregiver will utilize the scale to assess peak pruritis once per day and record the results in their diaries. The daily ratings are averaged to generate a score for the week.

Change From Baseline in Vital Signs - Pulse
Baseline to Week 48

The mean vital sign parameters were assessed for changes and trends over the course of the study. Shifts from Baseline in vital sign parameters were assessed for clinical relevance.

Change From Baseline in Vital Signs - Blood Pressure (Systolic and Diastolic)
Baseline to Week 48

The mean vital sign parameters were assessed for changes and trends over the course of the study. Shifts from Baseline in vital sign parameters were assessed for clinical relevance.

Change From Baseline in Vital Signs - Temperature
Baseline to Week 48

The mean vital sign parameters were assessed for changes and trends over the course of the study. Shifts from Baseline in vital sign parameters were assessed for clinical relevance.

Percent of Subjects Who Have a Validated Investigator Global Assessment for Atopic Dermatitis (vIGA-AD) Score of Clear or Almost Clear (0 or 1) With a Minimum 2-grade Improvement From Baseline to Week 8. Analyses Were Done Using Multiple Imputation.
Baseline to Week 8

The vIGA-AD is a global assessment of the current state of the disease. It is a static 5-point scale used to grade overall disease severity (scalp excluded), as determined by the investigator, using the clinical characteristics of erythema, induration/papulation, lichenification, oozing/crusting. The vIGA-AD ranges from 0 to 4 and is calculated as Clear (0), Almost clear (1), Mild (2), Moderate (3), and Severe (4). Higher vIGA-AD scores represent more severe disease. Statistics are based on 100 imputed datasets.

Number of Subjects With Adverse Events and Serious Adverse Events
Baseline to 44 weeks

All AEs reported in this extension study were considered as TEAEs except for those AEs ongoing at the end of the pivotal Phase 3 studies but resolved prior to the Visit 1 date for this extension study. All SAEs were deemed unrelated to treatment with tapinarof cream, 1%.

Number of Subjects With Clinically Meaningful Changes From Baseline in Clinical Laboratory Values and Vital Signs
Baseline to 40 weeks

The mean chemistry and hematology parameters were assessed for changes and trends over the course of the study. Shifts from Baseline in chemistry and hematology parameters for individual subjects were assessed for clinical relevance. The number of subjects with clinically significant changes from baseline in laboratory values was assessed for clinical relevance.

Remittive Effect of Treatment Success in Pivotal: Median Time to First Worsening (PGA ≥ 2) While Off Therapy for Subjects Who Entered LTE PGA = 0 (Clear)
Baseline to 44 weeks

Subjects who completed 1 of the phase 3 studies evaluating the safety and efficacy of tapinarof had the option to enter this extension study. Subjects entering with a PGA = 0 had treatment discontinued and were monitored for duration of remittive response. If/when disease worsening occurred, as evidenced by a PGA ≥ 2, treatment was re-initiated and continued until a PGA = 0 was achieved. This outcome measure assesses the median time for subjects entering with a PGA = 0 to first worsening (PGA ≥ 2) while off therapy during this extension study. The PGA is an assessment of a subject's psoriasis using a static 5-point scale to grade lesions on the clinical characteristics of erythema, scaling, and plaque thickness/elevation. The PGA ranges from 0 to 4, where 0 = clear, 1= almost clear, 2 = mild, 3 = moderate, and 4 = severe.

Complete Disease Clearance During LTE: Number of Subjects Achieving Disease Clearance PGA =0 (Clear) While on Therapy for Subjects Entered LTE PGA ≥ 1 (Almost Clear)
Baseline to 44 weeks

Subjects who completed 1 of the phase 3 studies evaluating the safety and efficacy of tapinarof had the option to enter this extension study. Subjects entering with a PGA ≥ 1 continued treatment with tapinarof until they achieved a PGA = 0, at which time treatment was discontinued and subjects were monitored for remittive response. If/when disease worsening occurred, as evidenced by a PGA ≥ 2, treatment was re-initiated and continued until a PGA = 0 was achieved. This outcome measure assesses the number of subjects who entered the extension study with a PGA ≥ 1 and achieved complete disease clearance (PGA=0) while on therapy during this extension study. The PGA is an assessment of a subject's psoriasis using a static 5-point scale to grade lesions on the clinical characteristics of erythema, scaling, and plaque thickness/elevation. The PGA ranges from 0 to 4, where 0 = clear, 1= almost clear, 2 = mild, 3 = moderate, and 4 = severe. Higher PGA scores represent more severe disease.

Response During LTE: Number of Subjects Achieving PGA =0 or 1 (Clear or Almost Clear) While on Therapy for Subjects Who Entered LTE With PGA ≥ 2 (Mild)
Baseline to 44 weeks

Subjects who completed 1 of the phase 3 studies evaluating the safety and efficacy of tapinarof had the option to enter this extension study. Subjects entering with a PGA ≥ 1 continued treatment with tapinarof until they achieved a PGA = 0, at which time treatment was discontinued and subjects were monitored for remittive response. If/when disease worsening occurred, as evidenced by a PGA ≥ 2, treatment was re-initiated and continued until a PGA = 0 was achieved. This outcome measure assesses the number of these subjects who entered the study with a PGA≥ 2 and achieved a PGA of 0 or 1 (clear or almost clear) while on therapy during this extension study. The PGA is an assessment of a subject's psoriasis using a static 5-point scale to grade lesions on the clinical characteristics of erythema, scaling, and plaque thickness/elevation. The PGA ranges from 0 to 4, where 0 = clear, 1= almost clear, 2 = mild, 3 = moderate, and 4 = severe. Higher PGA scores represent more severe disease.

Remittive Effect of Treatment Success: Number of Subjects Experiencing Worsening (PGA ≥ 2) While Off Therapy for Subjects Who Entered LTE With a PGA = 0 (Clear)
Baseline to 44 weeks

Subjects who completed 1 of the phase 3 studies evaluating the safety and efficacy of tapinarof had the option to enter this extension study. Subjects entering with a PGA = 0 had treatment discontinued and were monitored for duration of remittive response. If/when disease worsening occurred, as evidenced by a PGA ≥ 2, treatment was re-initiated and continued until a PGA = 0 was achieved. This treatment and re-treatment pattern of use was continued until the end of the study. This outcome measure assesses the number of these subjects entering the study with a PGA= 0 who experienced worsening (PGA ≥ 2) while off therapy at least once during this extension study. The PGA is an assessment of a subject's psoriasis using a static 5-point scale to grade lesions on the clinical characteristics of erythema, scaling, and plaque thickness/elevation. The PGA ranges from 0 to 4, where 0 = clear, 1= almost clear, 2 = mild, 3 = moderate, and 4 = severe.

Change From Baseline in %BSA Affected
Baseline to 40 weeks

Subjects received treatment with tapinarof intermittently guided by disease severity. This outcome measure assesses the change from baseline in %BSA affected in all subjects, including those on and those off therapy. BSA affected was estimated by the handprint method, where the full palmar hand of the subject represented approximately 1% of the total BSA. Body regions are assigned specific number of handprints (hp) with percentage \[Head and neck = 10% (10 hp), upper extremities = 20% (20 hp), Trunk (including axillae and groin) = 30% (30 hp), lower extremities (including buttocks) = 40% (40 hp)\]. The total %BSA involved was estimated = % involvement

Mean Duration (Days) of Treatment Course
Baseline to 40 weeks

Subjects who completed 1 of the phase 3 studies evaluating the safety and efficacy of tapinarof had the option to enter this extension study. Subjects entering with a PGA ≥ 1 continued tapinarof until they achieved a PGA = 0, at which time treatment was discontinued. If/when disease worsening occurred, as evidenced by a PGA ≥ 2, treatment was re-initiated and continued until a PGA = 0 was achieved. Mean duration (days) of treatment episode = time (days) from date of each PGA ≥ 2 (or PGA ≥ 1 for the first episode) to 1 day before each subsequent PGA = 0. The PGA is an assessment of a subject's psoriasis using a static 5-point scale to grade lesions on the clinical characteristics of erythema, scaling, and plaque thickness/elevation. The PGA ranges from 0 to 4, where 0 = clear, 1= almost clear, 2 = mild, 3 = moderate, and 4 = severe. Higher PGA scores represent more severe disease.

Change From Baseline in Psoriasis Area and Severity Index (PASI) Score
Baseline to 40 weeks

Subjects received treatment with tapinarof intermittently guided by disease severity. This outcome measure assesses the change from baseline in PASI score in all subjects, including those on and those off therapy. The PASI scoring system combines the assessment of lesion severity and extent of affected area into a single score: 0 (no disease) to 72 (maximal disease). The body is divided into 4 areas for scoring (head, arms, trunk, and legs). Each area is assessed for 3 signs: erythema (redness), induration (plaque thickness), and scale. The severity of each sign in each body area is assessed and scored independently using a 5-point scale, where 0=none, 1=slight, 2=mild, 3=moderate, 4=severe. Each area is also assessed for percent of skin involved: 0 = (0%), 1 = (1-\<10%), 2 = (10-\<30%), 3 = (30-\<50%), 4 = (50 -\<70%), 5 = (70-\<90%), 6 = (90-100%). Overall PASI = the sum of (individual scores x by a weighted factor for each body region).

Percent Change From Baseline in Psoriasis Area and Severity Index (PASI) Score
Baseline to 40 weeks

Subjects received treatment with tapinarof intermittently guided by disease severity. This outcome measure assesses the % change from baseline in PASI score in all subjects, including those on and those off therapy. The PASI scoring system combines the assessment of lesion severity and extent of affected area into a single score: 0 (no disease) to 72 (maximal disease). The body is divided into 4 areas for scoring (head, arms, trunk, and legs). Each area is assessed for 3 signs: erythema (redness), induration (plaque thickness), and scale. The severity of each sign in each body area is assessed and scored independently using a 5-point scale, where 0=none, 1=slight, 2=mild, 3=moderate, 4=severe. Each area is also assessed for percent of skin involved: 0 = (0%), 1 = (1-\<10%), 2 = (10-\<30%), 3 = (30-\<50%), 4 = (50 -\<70%), 5 = (70-\<90%), 6 = (90-100%). Overall PASI = the sum of (individual scores x by a weighted factor for each body region).

Change From Baseline in Disease Impact on Daily Activities, as Measured by the Dermatology Life Quality Index (DLQI)
Baseline to 40 weeks

Subjects received treatment with tapinarof intermittently guided by disease severity. This outcome measure assesses change from baseline in disease impact on daily activities, as measured by the DLQI, in all subjects including those on and those off therapy. The DLQI is a 10-item PRO measure that assesses the extent to which the skin condition has affected the subject's quality of life over the past week, including 6 domains (daily activities, personal relationships, symptoms and feelings, leisure, work/school, and treatment). The total score (0-30) is the sum of 10 questions with each ranging from 0 to 3. The scoring of each question is as follows: Very much= 3, A lot=2, A little = 1, Not at all = 0, Not relevant = 0, Question unanswered = 0. DLQI scores range from 0 to 30, with a higher score indicating a more impaired quality of life.

Percent Change From Baseline in Disease Impact on Daily Activities, as Measured by the Dermatology Life Quality Index (DLQI)
Baseline to 40 weeks

Subjects received treatment with tapinarof intermittently guided by disease severity. This outcome measure assesses % change from baseline in disease impact on daily activities, as measured by the DLQI, in all subjects including those on and those off therapy. The DLQI is a 10-item PRO measure that assesses the extent to which the skin condition has affected the subject's quality of life over the past week, including 6 domains (daily activities, personal relationships, symptoms and feelings, leisure, work/school, and treatment). The total score (0-30) is the sum of 10 questions with each ranging from 0 to 3. The scoring of each question is as follows: Very much= 3, A lot=2, A little = 1, Not at all = 0, Not relevant = 0, Question unanswered = 0.

Percent of Subjects Who Achieve a Physician Global Assessment (PGA) Score of Clear (0) or Almost Clear (1) With a Minimum 2-grade Improvement From Baseline at Week 12. Analyses Were Done Using Multiple Imputation
Baseline to Week 12

The PGA is a clinical tool for assessing the current state/severity of a subject's psoriasis at a given timepoint. A static 5-point scale is used to grade lesions on the clinical characteristics of erythema, scaling, and plaque thickness/elevation. The PGA ranges from 0 to 4, and is calculated as Clear (0), Almost clear (1), Mild (2), Moderate (3), and Severe (4). Higher PGA scores represent more severe disease. Analyses were done using multiple imputation

Number of Participants That Experienced Adverse Events (AEs) and Serious Adverse Events (SAEs)
Baseline to Day 28 for subjects enrolling in Long-Term Extension (LTE), otherwise to Day 35

Number of Participants that Experienced Adverse Events (AEs) and Serious Adverse Events (SAEs).

Change From Baseline in Laboratory Values (U/L)
Baseline to Day 28

Change in laboratory values was assessed for clinical relevance

Change From Baseline in Laboratory Values (g/L)
Baseline to Day 28

Change in laboratory values was assessed for clinical relevance

Change From Baseline in Laboratory Values (mmol/L)
Baseline to Day 28

Change in laboratory values was assessed for clinical relevance

Change From Baseline in Laboratory Values (Umol/L)
Baseline to Day 28

Change in laboratory values was assessed for clinical relevance

Change From Baseline in Laboratory Values (10^9 Cells/L)
Baseline to Day 28

Change in laboratory values was assessed for clinical relevance

Change From Baseline in Laboratory Values (%)
Baseline to Day 28

Change in laboratory values was assessed for clinical relevance

Change From Baseline in Laboratory Values (pg)
Baseline to Day 28

Change in Ery. mean corpuscular hemoglobin laboratory values was assessed for clinical relevance

Change From Baseline in Laboratory Values (fL)
Baseline to Day 28

Change in Ery. mean corpuscular volume laboratory values was assessed for clinical relevance

Change From Baseline in Laboratory Values (10^12 Cells/L)
Baseline to Day 28

Change in Erythrocytes laboratory values was assessed for clinical relevance

Change From Baseline in Laboratory Values (L/L)
Baseline to Day 28

Change in Hematocrit laboratory values was assessed for clinical relevance

Mean Change in Local Tolerability Scale (LTS)
Baseline to Day 28

Local Tolerability Scale (LTS) is a clinical tool for assessing the presence and overall degree of irritation at the application sites, according to a 5-point scale. 0 indicates no irritation and 4 indicates Very Severe irritation.

Tapinarof Plasma PK Parameters on Day 1: AUC0-τ
Day 1 (PK samples collected pre-dose and at 1, 3, and 5 hours post-dose)

The AUC in plasma is a pharmacokinetic parameter that describes the overall exposure of the drug.

Tapinarof Plasma PK Parameters on Day 1: Cmax
Day 1 (PK samples collected pre-dose and at 1, 3, and 5 hours post-dose)

The Cmax is a pharmacokinetic parameter that describes the highest concentration of the drug that is achieved after dosing.

Tapinarof Plasma PK Parameters on Day 1: Tmax
Day 1 (PK samples collected pre-dose and at 1, 3, and 5 hours post-dose)

The tmax is a pharmacokinetic parameter that describes the time point at which the highest concentration of the drug is achieved after dosing.

Tapinarof Plasma Concentration: Cτ
Day 1 (PK samples collected pre-dose and at 1, 3, and 5 hours post-dose)

The Cτ is a pharmacokinetic parameter that is the last quantifiable concentration determined directly from individual concentration-time data

Change From Baseline in Vital Signs (Beats/Min)
Baseline to Day 28

Change in pulse vital signs was assessed for clinical relevance

Change From Baseline in Vital Signs (mmHg)
Baseline to Day 28

Change in Blood Pressure vital signs was assessed for clinical relevance

Change From Baseline in Vital Signs (C)
Baseline to Day 28

Change in Temperature vital signs was assessed for clinical relevance

Number of Participants That Experienced Adverse Events (AEs), Severe Adverse Events, and Serious Adverse Events (SAEs)
Baseline to Week 4

Frequency and severity of AEs (local and systemic)

Number of Participants With Clinically Significant Changes From Baseline in Laboratory Values, Biomarker Values, ECG Results or Vital Signs
Baseline to Week 4 or Follow-Up (7-10 days after Week 4 Visit)

Changes in laboratory values, biomarker values, ECG results and vital signs were assessed for clinical relevance.

Number of Participants With Irritation as Assessed by the Local Tolerability Scale
Day 1, Day 15, Day 29

At each specified study visit, the Investigator (or qualified evaluator) assessed the presence and overall degree of irritation at the application sites, according to the LTS. The score will ideally represent an 'average' across all application sites. To the fullest extent possible, the same Investigator (or designated evaluator) will perform all tolerability assessments for an individual participant throughout the study.

Tapinarof and Tapinarof Sulfate (Metabolite) Plasma PK Parameters on Day 1 and Day 29: AUCo-tau
Day 1 and Day 29 (PK samples collected at pre-dose and at 1, 2, 3, 4, 5, 8, 12, and 24 hours after dosing)

The AUC in plasma is a pharmacokinetic parameter that describes the overall exposure of the drug.

Tapinarof and Tapinarof Sulfate (Metabolite) Plasma PK Parameters on Day 1 and Day 29: Cmax
Day 1 and Day 29 (PK samples collected at pre-dose and at 1, 2, 3, 4, 5, 8, 12, and 24 hours after dosing)

The Cmax is a pharmacokinetic parameter that describes the highest concentration of the drug that is achieved after dosing.

Tapinarof and Tapinarof Sulfate (Metabolite) Plasma PK Parameters on Day 1 and Day 29: Tmax and t1/2
Day 1 and Day 29 (PK samples collected at pre-dose and at 1, 2, 3, 4, 5, 8, 12, and 24 hours after dosing)

The tmax is a pharmacokinetic parameter that describes the time point at which the highest concentration of the drug is achieved after dosing.

Secondary Endpoints

Percentage of participants with ≥ 75% improvement in Eczema Area and Severity Index (EASI) Score from Baseline to Week 8.
Baseline to last planned visit in the Double-Blind Period, up to 8 weeks.
Mean change in percentage of total body surface area (%BSA) affected from Baseline to Week 8
Baseline to last planned visit in the Double-Blind Period, up to 8 weeks.
Percentage of participants with ≥ 90% improvement in Eczema Area and Severity Index (EASI) score from Baseline to Week 8
Baseline to last planned visit in the Double-Blind Period, up to 8 weeks.
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Tapinarof creamEXPERIMENTALTapinarof cream, 1%, applied topically once daily
Vehicle creamPLACEBO_COMPARATORVehicle cream is applied topically once daily for up to 8-weeks.
Open LabelEXPERIMENTAL -
Tapinarof (DMVT-505) Cream GroupEXPERIMENTALSubjects who completed 1 of the phase 3 studies evaluating the safety and efficacy of tapinarof had the option to enter this extension study. Subjects entering with a PGA ≥ 1 received treatment with tapinarof cream, 1% until they achieve a PGA = 0, at which time treatment was discontinued and subjects were monitored for durability of response (remittive response). If/when disease worsening occurred, as evidenced by a PGA ≥ 2, treatment was re initiated and continued until a PGA = 0 was achieved. Subjects entering with a PGA = 0 had treatment discontinued and were monitored for duration of remittive response. If/when disease worsening occurred, as evidenced by a PGA ≥ 2, treatment was re initiated and continued until a PGA = 0 was achieved. This treatment and re treatment pattern of use was continued until the end of the study
Vehicle Cream GroupPLACEBO_COMPARATORVehicle cream applied once daily
Tapinarof (DMVT-505)EXPERIMENTALTapinarof (DMVT-505) Cream Group
Tapinarof (DMVT-505) cream, 1%EXPERIMENTALTapinarof (DMVT-505) cream, 1% applied topically once daily

Interventions

NameTypeDescription
Tapinarof cream, 1%DRUGTapinarof cream, 1%: Applied topically once daily to lesions on participant's skin during the Double-Blind period. During the Open-Label Period, it will be applied once daily to lesions, as needed.
Vehicle CreamDRUGApplied topically once daily to lesions on participant's skin during the Double-Blind period.
TapinarofDRUGTapinarof cream, 1%, applied once daily
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Eligibility Criteria

Age Range3 Months to 23 Months
SexALL
Healthy VolunteersNo
Study Sites46

Inclusion Criteria: * Infants and toddlers born at term (≥37 weeks of gestational age) that are 3 months to \<24 months of age at the Screening visit. * Clinical diagnosis of atopic dermatitis (AD), AD covering \>5% Body Surface Area (BSA) and validated Investigator Global Assessment for Atopic Der...

Countries:United StatesCanada
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Recent Changes (Last 90 Days)

MEDIUMAug 12, 2026NCT07265479Status: RECRUITING → ACTIVE_NOT_RECRUITING
MEDIUMAug 12, 2026NCT07265479Status: RECRUITING → ACTIVE_NOT_RECRUITING
LOWJul 17, 2026NCT07265479lastUpdatePostDate: changed
LOWJul 17, 2026NCT07265479lastUpdatePostDate: changed
LOWJul 17, 2026NCT07265479lastUpdatePostDate: changed
LOWJun 4, 2026NCT07265479lastUpdatePostDate: changed
LOWJun 4, 2026NCT07265479lastUpdatePostDate: changed
LOWJun 4, 2026NCT07265479lastUpdatePostDate: changed
LOWJun 4, 2026NCT07265479lastUpdatePostDate: changed

Frequently asked questions about tapinarof, 1%

What is Tapinarof used for?

Tapinarof is an investigational small molecule being developed for dermatology conditions including plaque psoriasis, palmoplantar keratoderma, and atopic dermatitis. It is formulated as a cream, 1% strength. Tapinarof is not FDA approved and remains in clinical development.

Who makes Tapinarof?

Tapinarof is being developed by Organon & Co. (NYSE: OGN). The company is conducting clinical trials of tapinarof cream, 1% for plaque psoriasis and other dermatology indications.

What phase is Tapinarof in?

Tapinarof is in Phase 2 clinical development. It has completed Phase 2 and Phase 3 trials for plaque psoriasis, and an active Phase 3 trial is ongoing in pediatric subjects. Tapinarof is investigational and not yet approved.

What clinical trials is Tapinarof in?

Tapinarof has been studied in trials including NCT03956355 and NCT04053387 for plaque psoriasis in adults, NCT04042103 as a maximal use study, and NCT05172726 in pediatric subjects. These trials are completed or active, with total enrollment of 1,867 participants.

Is Tapinarof the same as tapinarof cream, 1%?

Yes, Tapinarof is the same as tapinarof cream, 1%. The drug is referred to by both names in clinical trials and development materials. Tapinarof is the active ingredient in the 1% cream formulation.