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A Study to Assess the Safety and Efficacy of ZPL389 With TCS/TCI in Atopic Dermatitis Patients

A Randomized, Double Blind, Multicenter Extension to CZPL389A2203 Dose-ranging Study to Assess the Short-term and Long-term Safety and Efficacy of Oral ZPL389 With Concomitant Use of TCS and/or TCI in Adult Patients With Atopic Dermatitis.

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03948334
Acronym
ZESTExt
Enrollment
123
Registered
2019-05-13
Start date
2019-04-04
Completion date
2020-08-25
Last updated
2021-10-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Atopic Dermatitis

Keywords

atopic dermatitis, AD, eczema, itch, pruritus, H4R, ZPL389

Brief summary

This extension study (CZPL389A2203E1) was designed as a 2-year (100 weeks) extension to the core study (CZPL389A2203/ NCT03517566) which is disclosed separately. It aimed to assess the short-term and long-term safety of (blinded) 30 mg o.d and 50 mg o.d ZPL389 with concomitant or intermittent use of topical corticosteroids (TCS) and/or topical calcineurin inhibitors (TCI).

Detailed description

Subjects who had received ZPL389 30 mg or 50 mg doses in the core study (CZPL389A2203), continued to receive the same doses in double-blinded fashion. Subjects who had received ZPL389 3 mg, 10 mg or placebo in the core study were randomized to 30 mg or 50 mg ZPL389 in a 1:1 ratio. All subjects received concomitant or intermittent TCS and/or TCI along with ZPL389. Short-term safety was assessed up to week 16 of this extension study (week 16 to week 32 referring to the start of core study treatment) and long-term safety was assessed after week 16 of this extension study (after week 32 referring to the start of core study treatment). The entire planned time frame (100 weeks) was not assessed as originally planned due to early termination of the core and extension studies.

Interventions

30mg of ZPL389; once daily

50mg of ZPL389; once daily

DRUGTCS and/or TCI

Topical corticosteroids (TCS) and /or topical calcineurin inhibitors (TCI) were used concomitantly or intermittently based on disease severity.

Sponsors

Novartis Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Subjects must give a written, signed and dated informed consent * Subjects with atopic dermatitis who have participated in and completed 16 weeks of treatment in CZPL389A2203 study. * Willing and able to comply with scheduled visits, treatment plan, laboratory tests, diary completion and other study procedures.

Exclusion criteria

* Inability to use TCS and/or TCI due to history of important side effects of topical medication (e.g., intolerance or hypersensitivity reactions). * Treatment discontinued subject from CZPL389A2203 study. * Any skin disease that would confound the diagnosis or evaluation of atopic dermatitis disease activity.

Design outcomes

Primary

MeasureTime frameDescription
Number of Patients With Adverse Events in the First 16 Weeks of This Extension Study16 weeks (week 16 to week 32 referring to core study)An adverse event (AE) is any untoward medical occurrence (e.g., any unfavorable and unintended sign \[including abnormal laboratory findings\], symptom or disease) in a subject or clinical investigation subject after providing written informed consent for participation in the study until the end of study visit. Therefore, an AE may or may not be temporally or causally associated with the use of a medicinal (investigational) product. As all patients were rolling over from the core study CZPL389A2203, in addition to the time frame referring to the start in this extension study, the time frame corresponding to the start in the core study (+16 weeks) are provided in parenthesis.
Number of Patients With Adverse Events After 16 Weeks of Treatment in This Extension StudyFrom week 16 to week 67 of this extension study (week 32 to week 83 referring to core study)An adverse event (AE) is any untoward medical occurrence (e.g., any unfavorable and unintended sign \[including abnormal laboratory findings\], symptom or disease) in a subject or clinical investigation subject after providing written informed consent for participation in the study until the end of study visit. Therefore, an AE may or may not be temporally or causally associated with the use of a medicinal (investigational) product. As all patients were rolling over from the core study CZPL389A2203, in addition to the time frame referring to the start in this extension study, the time frame corresponding to the start in the core study (+16 weeks) are provided in parenthesis.

Secondary

MeasureTime frameDescription
Percentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 4, Week 8, Week 12, Week 16, Week 28, Week 40 (Week 20, Week 24, Week 28 ,Week 32, Week 44, Week 56 referring to core study)IGA score is used to determine the severity of atopic dermatitis symptoms and clinical response to treatment. The scale ranges from 0=clear to 4=severe. It is a static scale and doesn't refer to previous status of the subject. IGA response is an achievement of an IGA score of 0 or 1 with a 2-point reduction from baseline without use of confounding therapy up to the assessment time point. Treatment discontinuations for lack of efficacy or AE are considered non-responders.Presentation of the results is stratified by if patients were re-randomized from the core study or not. As all patients were rolling over from the core study, in addition to the timeframe referring to the start in this extension study, the timeframe corresponding to the start in the core study (+16 weeks) are provided in parenthesis. Percentage of responders was calculated based on a logistic regression model with response as outcome variable and treatment (dose as categorical variable) and baseline IGA as covariates.
Percentage of EASI50 Responders Over TimeWeek 4, Week 8, Week 12, Week 16, Week 28, Week 40 (Week 20, Week 24, Week 28 ,Week 32, Week 44, Week 56 referring to core study)Eczema Area and Severity Index (EASI) is used to assess the extend and severity of atopic dermatitis on a scale from 0 to 72 where 72 is worst eczema. EASI50 response is defined as achieving ≥ 50% improvement (reduction) in EASI score compared to baseline. Treatment discontinuations for lack of efficacy or adverse event are considered non-responders. Presentation of the results is stratified by if patients were re-randomized from the core study or not. As all patients were rolling over from the core study CZPL389A2203, in addition to the time frame referring to the start in this extension study, the time frame corresponding to the start in the core study (+16 weeks) are provided in parenthesis. Percentage of responders was calculated based on a logistic regression model with response as outcome variable and treatment (dose as categorical variable) and baseline EASI as covariates.
Percentage of EASI75 Responders Over TimeWeek 4, Week 8, Week 12, Week 16, Week 28, Week 40 (Week 20, Week 24, Week 28 ,Week 32, Week 44, Week 56 referring to core study)Eczema Area and Severity Index (EASI) is used to assess the extend and severity of atopic dermatitis on a scale from 0 to 72 where 72 is worst eczema. EASI75 response is defined as a reduction from baseline of ≥ 75% in EASI score. Treatment discontinuations for lack of efficacy or adverse event are considered non-responders. Presentation of the results is stratified by if patients were re-randomized from the core study or not. As all patients were rolling over from the core study CZPL389A2203, in addition to the time frame referring to the start in this extension study, the time frame corresponding to the start in the core study (+16 weeks) are provided in parenthesis. Percentage of responders was calculated based on a logistic regression model with response as outcome variable and treatment (dose as categorical variable) and baseline EASI as covariates.

Countries

Belgium, Canada, Finland, Germany, Iceland, Japan, Netherlands, Poland, Russia, Slovakia, Taiwan, United Kingdom, United States

Participant flow

Pre-assignment details

Subjects who had received ZPL389 30 mg or 50 mg doses in the core study, continued to receive the same doses in double-blinded fashion. Subjects who had received ZPL389 3 mg, 10 mg or placebo in the core study were randomized to 30 mg or 50 mg ZPL389 in a 1:1 ratio.

Participants by arm

ArmCount
ZPL389 30mg
Dose 1 of ZPL389 + TCS and/or TCI
60
ZPL389 50mg
Dose 2 of ZPL389 + TCS and/or TCI
63
Total123

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event14
Overall StudyLack of Efficacy20
Overall StudyLost to Follow-up10
Overall StudyPhysician Decision10
Overall StudyPregnancy01
Overall StudyProtocol Deviation10
Overall StudyStudy terminated by Sponsor5051
Overall StudySubject Decision /Guardian Decision47

Baseline characteristics

CharacteristicZPL389 30mgZPL389 50mgTotal
Age, Continuous34.8 years
STANDARD_DEVIATION 12.18
34.4 years
STANDARD_DEVIATION 11.24
34.6 years
STANDARD_DEVIATION 11.66
Race/Ethnicity, Customized
Asian
23 Participants20 Participants43 Participants
Race/Ethnicity, Customized
Black or African American
1 Participants1 Participants2 Participants
Race/Ethnicity, Customized
White
36 Participants42 Participants78 Participants
Sex: Female, Male
Female
24 Participants20 Participants44 Participants
Sex: Female, Male
Male
36 Participants43 Participants79 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
0 / 600 / 630 / 600 / 63
other
Total, other adverse events
6 / 608 / 639 / 606 / 63
serious
Total, serious adverse events
2 / 605 / 630 / 602 / 63

Outcome results

Primary

Number of Patients With Adverse Events After 16 Weeks of Treatment in This Extension Study

An adverse event (AE) is any untoward medical occurrence (e.g., any unfavorable and unintended sign \[including abnormal laboratory findings\], symptom or disease) in a subject or clinical investigation subject after providing written informed consent for participation in the study until the end of study visit. Therefore, an AE may or may not be temporally or causally associated with the use of a medicinal (investigational) product. As all patients were rolling over from the core study CZPL389A2203, in addition to the time frame referring to the start in this extension study, the time frame corresponding to the start in the core study (+16 weeks) are provided in parenthesis.

Time frame: From week 16 to week 67 of this extension study (week 32 to week 83 referring to core study)

Population: The Extension study set comprised all subjects who were randomized and to whom study treatment had been assigned and had at least one visit in the extension study.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
ZPL389 30mgNumber of Patients With Adverse Events After 16 Weeks of Treatment in This Extension StudyAEs leading to discontinuation0 Participants
ZPL389 30mgNumber of Patients With Adverse Events After 16 Weeks of Treatment in This Extension StudyAdverse events18 Participants
ZPL389 30mgNumber of Patients With Adverse Events After 16 Weeks of Treatment in This Extension StudySAEs0 Participants
ZPL389 50mgNumber of Patients With Adverse Events After 16 Weeks of Treatment in This Extension StudySAEs2 Participants
ZPL389 50mgNumber of Patients With Adverse Events After 16 Weeks of Treatment in This Extension StudyAdverse events20 Participants
ZPL389 50mgNumber of Patients With Adverse Events After 16 Weeks of Treatment in This Extension StudyAEs leading to discontinuation1 Participants
Primary

Number of Patients With Adverse Events in the First 16 Weeks of This Extension Study

An adverse event (AE) is any untoward medical occurrence (e.g., any unfavorable and unintended sign \[including abnormal laboratory findings\], symptom or disease) in a subject or clinical investigation subject after providing written informed consent for participation in the study until the end of study visit. Therefore, an AE may or may not be temporally or causally associated with the use of a medicinal (investigational) product. As all patients were rolling over from the core study CZPL389A2203, in addition to the time frame referring to the start in this extension study, the time frame corresponding to the start in the core study (+16 weeks) are provided in parenthesis.

Time frame: 16 weeks (week 16 to week 32 referring to core study)

Population: The Extension study set comprised all subjects who were randomized and to whom study treatment had been assigned and had at least one visit in the extension study.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
ZPL389 30mgNumber of Patients With Adverse Events in the First 16 Weeks of This Extension StudyAdverse events29 Participants
ZPL389 30mgNumber of Patients With Adverse Events in the First 16 Weeks of This Extension StudySAEs2 Participants
ZPL389 30mgNumber of Patients With Adverse Events in the First 16 Weeks of This Extension StudyAEs leading to discontinuation2 Participants
ZPL389 50mgNumber of Patients With Adverse Events in the First 16 Weeks of This Extension StudySAEs5 Participants
ZPL389 50mgNumber of Patients With Adverse Events in the First 16 Weeks of This Extension StudyAdverse events33 Participants
ZPL389 50mgNumber of Patients With Adverse Events in the First 16 Weeks of This Extension StudyAEs leading to discontinuation3 Participants
Secondary

Percentage of EASI50 Responders Over Time

Eczema Area and Severity Index (EASI) is used to assess the extend and severity of atopic dermatitis on a scale from 0 to 72 where 72 is worst eczema. EASI50 response is defined as achieving ≥ 50% improvement (reduction) in EASI score compared to baseline. Treatment discontinuations for lack of efficacy or adverse event are considered non-responders. Presentation of the results is stratified by if patients were re-randomized from the core study or not. As all patients were rolling over from the core study CZPL389A2203, in addition to the time frame referring to the start in this extension study, the time frame corresponding to the start in the core study (+16 weeks) are provided in parenthesis. Percentage of responders was calculated based on a logistic regression model with response as outcome variable and treatment (dose as categorical variable) and baseline EASI as covariates.

Time frame: Week 4, Week 8, Week 12, Week 16, Week 28, Week 40 (Week 20, Week 24, Week 28 ,Week 32, Week 44, Week 56 referring to core study)

Population: The Extension study set comprised all subjects who were randomized and to whom study treatment had been assigned and had at least one visit in the extension study.

ArmMeasureGroupValue (NUMBER)
ZPL389 30mgPercentage of EASI50 Responders Over Timeweek 4 (week 20 referring to core study)14.7 Percentage of participants
ZPL389 30mgPercentage of EASI50 Responders Over TimeWeek 28 (week 44 referring to core study)10.8 Percentage of participants
ZPL389 30mgPercentage of EASI50 Responders Over TimeWeek 12 (week 28 referring to core study)22.3 Percentage of participants
ZPL389 30mgPercentage of EASI50 Responders Over TimeWeek 8 (week 24 referring to core study)17.6 Percentage of participants
ZPL389 30mgPercentage of EASI50 Responders Over TimeWeek 40 (week 56 referring to core study)14.8 Percentage of participants
ZPL389 30mgPercentage of EASI50 Responders Over TimeWeek 16 (week 32 referring to core study)19.6 Percentage of participants
ZPL389 50mgPercentage of EASI50 Responders Over TimeWeek 12 (week 28 referring to core study)15.9 Percentage of participants
ZPL389 50mgPercentage of EASI50 Responders Over TimeWeek 28 (week 44 referring to core study)14.8 Percentage of participants
ZPL389 50mgPercentage of EASI50 Responders Over TimeWeek 40 (week 56 referring to core study)20.3 Percentage of participants
ZPL389 50mgPercentage of EASI50 Responders Over Timeweek 4 (week 20 referring to core study)13.0 Percentage of participants
ZPL389 50mgPercentage of EASI50 Responders Over TimeWeek 16 (week 32 referring to core study)18.2 Percentage of participants
ZPL389 50mgPercentage of EASI50 Responders Over TimeWeek 8 (week 24 referring to core study)15.6 Percentage of participants
ZPL389 30mg Continuing After Core StudyPercentage of EASI50 Responders Over TimeWeek 40 (week 56 referring to core study)12.3 Percentage of participants
ZPL389 30mg Continuing After Core StudyPercentage of EASI50 Responders Over TimeWeek 28 (week 44 referring to core study)14.0 Percentage of participants
ZPL389 30mg Continuing After Core StudyPercentage of EASI50 Responders Over TimeWeek 8 (week 24 referring to core study)11.5 Percentage of participants
ZPL389 30mg Continuing After Core StudyPercentage of EASI50 Responders Over TimeWeek 12 (week 28 referring to core study)10.7 Percentage of participants
ZPL389 30mg Continuing After Core StudyPercentage of EASI50 Responders Over TimeWeek 16 (week 32 referring to core study)10.1 Percentage of participants
ZPL389 30mg Continuing After Core StudyPercentage of EASI50 Responders Over Timeweek 4 (week 20 referring to core study)7.7 Percentage of participants
ZPL389 50mg Continuing After Core StudyPercentage of EASI50 Responders Over Timeweek 4 (week 20 referring to core study)12.1 Percentage of participants
ZPL389 50mg Continuing After Core StudyPercentage of EASI50 Responders Over TimeWeek 12 (week 28 referring to core study)12.1 Percentage of participants
ZPL389 50mg Continuing After Core StudyPercentage of EASI50 Responders Over TimeWeek 28 (week 44 referring to core study)14.2 Percentage of participants
ZPL389 50mg Continuing After Core StudyPercentage of EASI50 Responders Over TimeWeek 40 (week 56 referring to core study)13.8 Percentage of participants
ZPL389 50mg Continuing After Core StudyPercentage of EASI50 Responders Over TimeWeek 8 (week 24 referring to core study)12.1 Percentage of participants
ZPL389 50mg Continuing After Core StudyPercentage of EASI50 Responders Over TimeWeek 16 (week 32 referring to core study)11.9 Percentage of participants
Secondary

Percentage of EASI75 Responders Over Time

Eczema Area and Severity Index (EASI) is used to assess the extend and severity of atopic dermatitis on a scale from 0 to 72 where 72 is worst eczema. EASI75 response is defined as a reduction from baseline of ≥ 75% in EASI score. Treatment discontinuations for lack of efficacy or adverse event are considered non-responders. Presentation of the results is stratified by if patients were re-randomized from the core study or not. As all patients were rolling over from the core study CZPL389A2203, in addition to the time frame referring to the start in this extension study, the time frame corresponding to the start in the core study (+16 weeks) are provided in parenthesis. Percentage of responders was calculated based on a logistic regression model with response as outcome variable and treatment (dose as categorical variable) and baseline EASI as covariates.

Time frame: Week 4, Week 8, Week 12, Week 16, Week 28, Week 40 (Week 20, Week 24, Week 28 ,Week 32, Week 44, Week 56 referring to core study)

Population: The Extension study set comprised all subjects who were randomized and to whom study treatment had been assigned and had at least one visit in the extension study.

ArmMeasureGroupValue (NUMBER)
ZPL389 30mgPercentage of EASI75 Responders Over TimeWeek 16 (week 32 referring to core study)8.4 Percentage of participants
ZPL389 30mgPercentage of EASI75 Responders Over TimeWeek 8 (week 24 referring to core study)5.9 Percentage of participants
ZPL389 30mgPercentage of EASI75 Responders Over TimeWeek 40 (week 56 referring to core study)10.0 Percentage of participants
ZPL389 30mgPercentage of EASI75 Responders Over Timeweek 4 (week 20 referring to core study)5.9 Percentage of participants
ZPL389 30mgPercentage of EASI75 Responders Over TimeWeek 12 (week 28 referring to core study)12.0 Percentage of participants
ZPL389 30mgPercentage of EASI75 Responders Over TimeWeek 28 (week 44 referring to core study)8.2 Percentage of participants
ZPL389 50mgPercentage of EASI75 Responders Over Timeweek 4 (week 20 referring to core study)8.8 Percentage of participants
ZPL389 50mgPercentage of EASI75 Responders Over TimeWeek 12 (week 28 referring to core study)11.4 Percentage of participants
ZPL389 50mgPercentage of EASI75 Responders Over TimeWeek 16 (week 32 referring to core study)10.3 Percentage of participants
ZPL389 50mgPercentage of EASI75 Responders Over TimeWeek 28 (week 44 referring to core study)8.9 Percentage of participants
ZPL389 50mgPercentage of EASI75 Responders Over TimeWeek 8 (week 24 referring to core study)14.2 Percentage of participants
ZPL389 50mgPercentage of EASI75 Responders Over TimeWeek 40 (week 56 referring to core study)13.5 Percentage of participants
ZPL389 30mg Continuing After Core StudyPercentage of EASI75 Responders Over TimeWeek 16 (week 32 referring to core study)0.0 Percentage of participants
ZPL389 30mg Continuing After Core StudyPercentage of EASI75 Responders Over TimeWeek 8 (week 24 referring to core study)0.0 Percentage of participants
ZPL389 30mg Continuing After Core StudyPercentage of EASI75 Responders Over TimeWeek 12 (week 28 referring to core study)4.6 Percentage of participants
ZPL389 30mg Continuing After Core StudyPercentage of EASI75 Responders Over TimeWeek 40 (week 56 referring to core study)6.1 Percentage of participants
ZPL389 30mg Continuing After Core StudyPercentage of EASI75 Responders Over Timeweek 4 (week 20 referring to core study)0.0 Percentage of participants
ZPL389 30mg Continuing After Core StudyPercentage of EASI75 Responders Over TimeWeek 28 (week 44 referring to core study)0.0 Percentage of participants
ZPL389 50mg Continuing After Core StudyPercentage of EASI75 Responders Over Timeweek 4 (week 20 referring to core study)12.1 Percentage of participants
ZPL389 50mg Continuing After Core StudyPercentage of EASI75 Responders Over TimeWeek 12 (week 28 referring to core study)12.1 Percentage of participants
ZPL389 50mg Continuing After Core StudyPercentage of EASI75 Responders Over TimeWeek 16 (week 32 referring to core study)4.9 Percentage of participants
ZPL389 50mg Continuing After Core StudyPercentage of EASI75 Responders Over TimeWeek 8 (week 24 referring to core study)9.1 Percentage of participants
ZPL389 50mg Continuing After Core StudyPercentage of EASI75 Responders Over TimeWeek 40 (week 56 referring to core study)3.2 Percentage of participants
ZPL389 50mg Continuing After Core StudyPercentage of EASI75 Responders Over TimeWeek 28 (week 44 referring to core study)2.6 Percentage of participants
Secondary

Percentage of Investigator's Global Assessment (IGA) Responders Over Time

IGA score is used to determine the severity of atopic dermatitis symptoms and clinical response to treatment. The scale ranges from 0=clear to 4=severe. It is a static scale and doesn't refer to previous status of the subject. IGA response is an achievement of an IGA score of 0 or 1 with a 2-point reduction from baseline without use of confounding therapy up to the assessment time point. Treatment discontinuations for lack of efficacy or AE are considered non-responders.Presentation of the results is stratified by if patients were re-randomized from the core study or not. As all patients were rolling over from the core study, in addition to the timeframe referring to the start in this extension study, the timeframe corresponding to the start in the core study (+16 weeks) are provided in parenthesis. Percentage of responders was calculated based on a logistic regression model with response as outcome variable and treatment (dose as categorical variable) and baseline IGA as covariates.

Time frame: Week 4, Week 8, Week 12, Week 16, Week 28, Week 40 (Week 20, Week 24, Week 28 ,Week 32, Week 44, Week 56 referring to core study)

Population: The Extension study set comprised all subjects who were randomized and to whom study treatment had been assigned and had at least one visit in the extension study.

ArmMeasureGroupValue (NUMBER)
ZPL389 30mgPercentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 12 (week 28 referring to core study)3.5 Percentage of participants
ZPL389 30mgPercentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 16 (week 32 referring to core study)3.9 Percentage of participants
ZPL389 30mgPercentage of Investigator's Global Assessment (IGA) Responders Over Timeweek 4 (week 20 referring to core study)2.9 Percentage of participants
ZPL389 30mgPercentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 40 (week 56 referring to core study)3.4 Percentage of participants
ZPL389 30mgPercentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 28 (week 44 referring to core study)0.0 Percentage of participants
ZPL389 30mgPercentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 8 (week 24 referring to core study)2.9 Percentage of participants
ZPL389 50mgPercentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 8 (week 24 referring to core study)4.8 Percentage of participants
ZPL389 50mgPercentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 28 (week 44 referring to core study)7.5 Percentage of participants
ZPL389 50mgPercentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 40 (week 56 referring to core study)9.1 Percentage of participants
ZPL389 50mgPercentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 16 (week 32 referring to core study)5.9 Percentage of participants
ZPL389 50mgPercentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 12 (week 28 referring to core study)4.0 Percentage of participants
ZPL389 50mgPercentage of Investigator's Global Assessment (IGA) Responders Over Timeweek 4 (week 20 referring to core study)5.2 Percentage of participants
ZPL389 30mg Continuing After Core StudyPercentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 40 (week 56 referring to core study)0.0 Percentage of participants
ZPL389 30mg Continuing After Core StudyPercentage of Investigator's Global Assessment (IGA) Responders Over Timeweek 4 (week 20 referring to core study)0.0 Percentage of participants
ZPL389 30mg Continuing After Core StudyPercentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 8 (week 24 referring to core study)0.0 Percentage of participants
ZPL389 30mg Continuing After Core StudyPercentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 12 (week 28 referring to core study)0.0 Percentage of participants
ZPL389 30mg Continuing After Core StudyPercentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 16 (week 32 referring to core study)0.0 Percentage of participants
ZPL389 30mg Continuing After Core StudyPercentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 28 (week 44 referring to core study)0.0 Percentage of participants
ZPL389 50mg Continuing After Core StudyPercentage of Investigator's Global Assessment (IGA) Responders Over Timeweek 4 (week 20 referring to core study)3.0 Percentage of participants
ZPL389 50mg Continuing After Core StudyPercentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 40 (week 56 referring to core study)0.0 Percentage of participants
ZPL389 50mg Continuing After Core StudyPercentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 8 (week 24 referring to core study)3.1 Percentage of participants
ZPL389 50mg Continuing After Core StudyPercentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 28 (week 44 referring to core study)1.5 Percentage of participants
ZPL389 50mg Continuing After Core StudyPercentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 12 (week 28 referring to core study)3.0 Percentage of participants
ZPL389 50mg Continuing After Core StudyPercentage of Investigator's Global Assessment (IGA) Responders Over TimeWeek 16 (week 32 referring to core study)0.0 Percentage of participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026