A Phase 3 Trial to Demonstrate the Superiority of 1% OPA-... | NCT07173478

Studies
A Phase 3 Trial to Demonstrate the Superiority of 1% OPA-15406 Foam to the Vehicle in Adult Patients With Atopic Dermatitis

NCT07173478

Sponsor

Otsuka Pharmaceutical Co., Ltd.

Status

Not yet recruiting

Last Update Posted

Sep 15, 2025Actual

Enrollment

156Estimated

Phase

Phase 3

Conditions

Atopic Dermatitis (AD)

Interventions

OPA-15406
Vehicle

Countries

Japan

Protocol Section

Identification Module Status Module Sponsor/Collaborators Module Oversight Module Description Module Conditions Module Design Module Arms/Interventions Module Outcomes Module Eligibility Module Contacts/Locations Module References Module IPD Sharing Statement Module

Results Section

Participant Flow Module Baseline Characteristics Module Outcome Measures Module Adverse Events Module More Info Module

Annotation Section

Annotation Module

Document Section

Large Document Module

Derived Section

Miscellaneous Info Module Condition Browse Module Intervention Browse Module

Protocol Section

Identification Module

NCT ID

Results Section

No data available

No data is available for this block.

Annotation Section

No data available

No data is available for this block.

Document Section

No data available

No data is available for this block.

Derived Section

Miscellaneous Info Module

Version Holder

Status Module

Record Verification Date

Sep 2025

Overall Recruitment Status or Expanded Access Status

Not yet recruiting

Last Known Status

Not provided

Delayed Posting

Not provided

Why Stopped

Not provided

Expanded Access Info

Start Date

Oct 2025Estimated

Primary Completion Date

Dec 2026Estimated

Completion Date

Dec 2026Estimated

First Submitted Date

Sep 7, 2025

First Submission Date that Met QC Criteria

Sep 7, 2025

First Posted Date

Sep 15, 2025Actual

Results Waived

Not provided

Results First Submitted Date

Not provided

Results First Submitted that Met QC Criteria

Not provided

Results First Posted Date

Not provided

Certification/Extension (aka Delayed Results) First Submitted Date

Not provided

Certification/Extension First Submitted that Passed QC Review

Not provided

Certification/Extension First Posted Date

Not provided

Last Update Submitted Date

Sep 7, 2025

Last Update Posted Date

Sep 15, 2025Actual

Oversight Module

Has Data Monitoring Committee (DMC)

Is FDA Regulated Drug

Is FDA Regulated Device

Is Unapproved Device

Not provided

Pediatric Postmarket Surveillance of a Device Product

Not provided

Product Exported from US

Not provided

FDAAA801 Violation

Not provided

Design Module

Study Type

Interventional

Number of References to an Expanded Access Study

Not provided

Expanded Access Types

Not provided

Patient Registry

Not provided

Target Follow-Up Duration

Not provided

Phases

Phase 3

Interventional Study Design

Allocation

Biospecimen

No data available

No data is available for this block.

Enrollment

156Estimated

Arms/Interventions Module

Arm Groups

Label	Type	Description	Intervention Names
1% OPA-15406 foam	Experimental		Drug: OPA-15406
Vehicle	Experimental		Drug: Vehicle

Interventions

Name	Type	Description	Arm Group Labels	Other Names
OPA-15406	Drug	1% foam, topical, twice daily, for 4 weeks	1% OPA-15406 foam

Outcomes Module

Primary Outcomes

Measure	Description	Time Frame
Success rate in Investigator's Global Assessment (IGA)	The investigator or subinvestigator assessed the skin symptoms using IGA. The investigator or subinvestigator scored the severity (0 = clear, 1 = almost clear, 2 =mild, 3 = moderate, 4 = severe/very severe) of the overall symptoms of the treatment area (erythema, infiltration, papules, effusion and scab formation) from baseline to Week 4. Incidence of success in IGA is defined as the rate of participants whose IGA score is 0 (clear) or 1 (almost clear) and has improved by at least 2 grades (responders) from baseline.	Week 4

Secondary Outcomes

Not provided

Other Outcomes

Not provided

Eligibility Module

Eligibility Criteria

Inclusion Criteria:

Participants who have been diagnosed AD based on the Diagnostic Criteria for Atopic Dermatitis (Criteria of the Japanese Dermatological Association)
Participants with a history of AD for at least 3 years
Participants who have an affected area covering from 5% to 40% of their body surface area (excluding the scalp) at the screening and baseline examinations
Participants with an IGA score of 2 or 3 at the screening and baseline examinations

Exclusion Criteria:

Participants who experienced an acute exacerbation of AD or contact dermatitis within 28 days prior to the baseline examination
Participants who have been treated with OPA-15406 ointment in the past

Accepts Healthy Volunteers

Sex

All

Sex/Gender Based

Not provided

Sex/Gender Description

Not provided

Minimum Age

15 Years

Maximum Age

70 Years

Standard Ages

ChildAdultOlder Adult

Study Population

Not provided

Sampling Method

Not provided

Contacts/Locations Module

Central Contacts

Name	Role	Phone	Extension	Email
Drug Information Center	Contact	+81-3-6361-7314

Overall Officials

Name	Affiliation	Role
Nobuhito Sanada	Otsuka Pharmaceutical Co., Ltd.	Study Director

Locations

Facility	Status	City	State	ZIP	Country	Contacts
Mita Dermatology Clinic		Tokyo			Japan

IPD Sharing Statement Module

Plan to Share IPD

Yes

Description

Anonymized Individual participant data (IPD) that underlie the results of this study will be shared with researchers to achieve aims pre-specified in a methodologically sound research proposal.

Types

Study Protocol
Statistical Analysis Plan (SAP)

Time Frame

Data will be available after marketing approval in global markets, or beginning 1-3 years following article Publication. There is no end date to the availability of the data.

Access Criteria

Otsuka will share data on an Otsuka-owned remotely accessible data sharing platform with Python and R analytical software. Research requests should be directed to clinicaltransparency@Otsuka-us.com.

URL

Not provided

Condition Browse Module

MeSH Terms

ID	Term
D003876	Dermatitis, Atopic

Ancestor Terms

ID	Term
D012873	Skin Diseases, Genetic
D030342	Genetic Diseases, Inborn
D009358	Congenital, Hereditary, and Neonatal Diseases and Abnormalities
D003872	Dermatitis

Browse Leaves

Not provided

Browse Branches

Not provided

Intervention Browse Module

MeSH Terms

ID	Term
C000711049	difamilast

Ancestor Terms

Not provided

Browse Leaves

Not provided

Browse Branches

Not provided