Title

A Study to Determine the Efficacy of ZPL-3893787 in Subjects With Atopic Dermatitis
A Randomized, Double-blind, Placebo Controlled, Parallel Group Study to Determine the Effects of 8 Weeks Treatment With Oral ZPL-3893787 (30 mg od x 56 Days) on Pruritus in Adult Subjects With Moderate to Severe Atopic Dermatitis
  • Phase

    Phase 2
  • Study Type

    Interventional
  • Intervention/Treatment

    pf-03893787 ...
  • Study Participants

    98
This was a randomized, double blind, placebo controlled, parallel group study in approximately 90 subjects with moderate-severe AD Eczema Area and Severity Index (EASI) ≥12 and ≤ 48 (0-72 scale). Following a run-in subjects were randomized to receive either oral 30 mg ZPL-3893787 once daily (od) or placebo od for 8 weeks (56 days).
Study Started
May 18
2015
Primary Completion
Jan 31
2016
Study Completion
Feb 03
2016
Results Posted
May 13
2021
Last Update
Jun 10
2021

Drug ZPL-3893787

ZPL-3893787

Drug Placebo

Matched Placebo

ZPL-3893787 Experimental

30 mg ZPL-3893787 orally once daily for 8 weeks.

Placebo Placebo Comparator

1 capsule orally once daily for 8 weeks.

Criteria

Inclusion Criteria:

Males and females aged 18-65 years inclusive with physician documented history or diagnosis of atopic dermatitis for at least 12 months prior to screening. Chronic AD should be diagnosed by the Eichenfield revised criteria of Hanifin and Rajka (Eichenfield, 2004)

Eczema Area and Severity Index (EASI) of ≥12 and <48.

An Investigator's Global Assessment (IGA) score ≥ 3 at both Screening and Day 0.

A mean pruritus score of ≥ 5 on a 0-10 scale over the 7 day Run In (Days -7 to -1)

Atopic dermatitis affecting ≥10% BSA

Exclusion Criteria:

AD of such severity (EASI >48) that the subject could not comply with the demands of the study and/or the subject is not a suitable candidate for a placebo-controlled study

Have concurrent skin disease (e.g. acne) of such severity in the study area that it could interfere with the study evaluation or presence of skin comorbidities that may interfere with study assessments.

Have an active skin infection or any other clinically apparent infections.

Hypersensitivity to mometasone or to any other ingredients contained by the topical corticosteroid product used as rescue medication in the study.

Have received phototherapy (e.g. UVA, UVB), or systemic therapy (e.g. immunosuppressants, cytostatics) known or suspected to have an effect on AD, within 4 weeks of the start of the Run In.

Have received systemic corticosteroids ([CS] e.g. oral, intravenous, intraarticular, rectal) within 4 weeks of the start of the Run in. Subjects on a stable maintenance dose (over the preceding 3 months) of inhaled or intranasal CS may participate.

Were treated with oral antihistamines or topical calcineurin inhibitors or topical steroids within 7 days of starting Run In; intranasal antihistamines for the treatment of allergic rhinitis are acceptable.

Summary

ZPL-3893787

Placebo

All Events

Event Type Organ System Event Term ZPL-3893787 Placebo

Change From Baseline in the Numerical Rating Score (NRS) for Pruritus (Worst Itch)

The participant used the Pruritus NRS to rate his or her worst itch in the previous 12 hours. This was assessed twice daily (in the morning soon after rising and the evening prior to retiring) and recorded in the eDiary. The scale ranges from 0 (no itching) to 10 (itching as bad as can be imagined). If only 1 measurement was collected on a particular day, that score was counted as the worst measurement.

ZPL-3893787

Baseline summary

7.3
score on a scale (Mean)
Standard Deviation: 1.139

Change from Baseline

-3.03
score on a scale (Mean)
Standard Deviation: 2.186

Week 8 summary

4.27
score on a scale (Mean)
Standard Deviation: 2.253

Placebo

Baseline summary

7.26
score on a scale (Mean)
Standard Deviation: 1.054

Change from Baseline

-2.66
score on a scale (Mean)
Standard Deviation: 2.057

Week 8 summary

4.6
score on a scale (Mean)
Standard Deviation: 1.95

Change From Baseline in Eczema Area and Severity Index (EASI) Score

The EASI is a validated tool used to measure the severity and extent of atopic eczema over 4 body regions (head and neck, upper limbs, trunk, and lower limbs). The intensity of a representative area of eczema and the approximate percentage affected by eczema are calculated for each region. A representative area of eczema is selected for each body region. The intensity of redness (erythema), thickness (induration, papulation, and edema), scratching (excoriation), and lichenification (lined skin) of eczema is assessed as: 0 - None - Mild - Moderate - Severe The total score incorporates the extent of body regions affected. Scores range from 0 to 72 with higher scores indicating more severe eczema. Total score is calculated by summing the EASI scores of 6 symptoms across 4 body regions

ZPL-3893787

Baseline

21.39
score on a scale (Mean)
Standard Deviation: 7.889

Week 8 change from baseline

-10.72
score on a scale (Mean)
Standard Deviation: 9.679

Week 8 summary

10.67
score on a scale (Mean)
Standard Deviation: 9.541

Placebo

Baseline

20.44
score on a scale (Mean)
Standard Deviation: 6.868

Week 8 change from baseline

-5.38
score on a scale (Mean)
Standard Deviation: 9.922

Week 8 summary

15.06
score on a scale (Mean)
Standard Deviation: 11.159

Total

98
Participants

Age, Continuous

34.3
years (Mean)
Standard Deviation: 11.64

Fitzpatrick Skin Type

Sex: Female, Male

Overall Study

ZPL-3893787

Placebo

Drop/Withdrawal Reasons

ZPL-3893787

Placebo