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CompletedNCT03731052Updated Feb 25, 2020

Comparison of 188-0551 Spray Versus Vehicle Spray in Subjects With Plaque Psoriasis (307)

A Phase 3 interventional study of 188-0551 Spray and Vehicle Spray in Plaque Psoriasis, sponsored by Therapeutics, Inc.. Completed at 14 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2020-02-25.

Sponsored by Therapeutics, Inc. · Phase 3, Interventional, and Treatment

From the registry’s dates

  • Primary completion was Dec 2019, 6 years 9 months ago, and no results have been posted to the registry; the sponsor requested a delay in submitting them in Feb 2020.
Phase
Phase 3
Study type
Interventional
Enrollment
217
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This Phase 3 study (Study 307) has been designed to determine and compare the efficacy and safety of 188-0551 Spray and Vehicle Spray applied twice daily for up to four weeks in subjects with plaque psoriasis. Subjects will be instructed to apply the test article (188-0551 Spray or Vehicle Spray) to all psoriasis plaques within the designated Treatment Area twice daily for four weeks (Study Day 29), unless the investigator verifies the subject's psoriasis has cleared at Day 15, then test article application will be for 2 weeks (Study Day 15).

02

Conditions studied

  • Plaque Psoriasis

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03

In context

Psoriasis

1,899 studies on the registry are indexed under Psoriasis; 233 are open to participants now.

This study's enrollment of 217 is above the median of 70 across 1,447 interventional studies indexed under Psoriasis.

Browse Psoriasis studies →

Lead sponsor

Therapeutics, Inc. is the lead sponsor of 16 studies on the registry; none are open to participants now.

Of its 7 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. Subject is male or non-pregnant female and is at least 18 years of age at time of informed consent.
  2. Subject has provided written informed consent.
  3. Subject has a clinical diagnosis of stable plaque psoriasis involving a minimum of 2% and no more than 10% body surface area (BSA) (excluding the face, scalp, groin, axillae, and other intertriginous areas).
  4. Subject has moderate to severe plaque psoriasis.
  5. Subject is willing and able to apply the test article as directed, comply with study instructions, and commit to all follow-up visits for the duration of the study.

Females must be post-menopausal , surgically sterile , or use an effective method of birth control. , Women of childbearing potential (WOCBP) must have a negative urine pregnancy test (UPT) at the Baseline Visit.

Exclusion criteria

Exclusion Criteria:

  1. Subject has spontaneously improving or rapidly deteriorating plaque psoriasis.
  2. Subject has guttate, pustular, erythrodermic, or other non-plaque forms of psoriasis.
  3. Subject has palmar/plantar psoriasis.
  4. Subject is pregnant, lactating, or is planning to become pregnant during the study.
  5. Subject is currently enrolled in an investigational drug or device study.
  6. Subject has been previously enrolled in this study and treated with a test article.

Other protocol defined inclusion or exclusion criteria assessed by the study staff may apply.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
217 participants (actual)

Study arms

  • Experimental
    Drug: 188-0551 Spray

    188-0551 Spray applied topically twice daily to psoriatic lesions within the assigned treatment area for up to four (4) weeks

    Drug: 188-0551 Spray

  • Placebo comparator
    Vehicle Spray

    Vehicle Spray applied topically twice daily to psoriatic lesions within the assigned treatment area for up to four (4) weeks

    Drug: Vehicle Spray

Interventions

  • Drug188-0551 Spray

    Topical Spray containing active drug

  • DrugVehicle Spray

    Topical Spray containing no active drug

06

What researchers measure

Primary outcomes

  1. Percentage of subjects rated a treatment success based on the Investigator's Global Assessment (IGA) Success

    The primary efficacy endpoint will be the percentage of subjects with IGA treatment success at End of Study (EOS) where EOS is the subject's last completed post-Baseline visit (Day 29).

    Time frame: Day 29

Secondary outcomes

  1. Percentage of subjects rated a treatment success for each of the clinical signs of psoriasis (scaling, erythema and plaque elevation)

    Scaling, erythema and plaque elevation will each be scored on a 5-point scale where 0 = clear, 1 = almost clear, 2 = mild, 3 = moderate, and 4 = severe. These evaluations are an assessment of the overall or "average" degree of each of three key characteristics present within all of the subject's psoriatic lesions in the Treatment Area by the investigator or designee.

    Time frame: Day 29

  2. Change from Baseline in pruritus score

    The proportion of subjects with ≥4 point reduction from Baseline in the Itch Numeric Rating Scale (I-NRS) at Day 29. The I-NRS is based on a 11-point scale where 0 represents "no itching" and 10 represents "worst itch imaginable."

    Time frame: Day 29

  3. IGA "treatment success" at Day 15

    The proportion of subjects with IGA "treatment success" at Day 15.

    Time frame: Day 15

07

Study locations

14 sites
  • Site 04
    Los Angeles, California 90045, United States
  • Site 14
    Ocala, Florida 34470, United States
  • Site 01
    Macon, Georgia 31217, United States
  • Site 11
    Rolling Meadows, Illinois 60008, United States
  • Site 13
    Rockville, Maryland 20850, United States
  • Site 10
    Clinton Township, Michigan 48038, United States
  • Site 12
    Fridley, Minnesota 55432, United States
  • Site 07
    Rochester, New York 14623, United States
  • Site 06
    High Point, North Carolina 27262, United States
  • Site 05
    Norman, Oklahoma 73071, United States
  • Site 03
    Philadelphia, Pennsylvania 19103, United States
  • Site 15
    Austin, Texas 78759, United States
  • Site 08
    San Antonio, Texas 78229, United States
  • Site 02
    Norfolk, Virginia 23502, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 25, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03731052
Lead sponsor
Therapeutics, Inc.
Responsible party
Sponsor
First posted
Nov 6, 2018
Start date
Oct 16, 2018
Primary completion
Dec 20, 2019
Completion
Dec 20, 2019
Last update
Feb 25, 2020

Study contacts

Tony Andrasfay
study director · Therapeutics, Inc.

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Feb 2020. You cannot join it, but the record below documents what was studied.

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