Safety, Pharmacokinetics and Preliminary Efficacy of Asimadoline in Pruritus Associated With Atopic Dermatitis

NCT ID: NCT02475447

Last Updated: 2017-12-13

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

249 participants

Study Classification

INTERVENTIONAL

Study Start Date

2015-07-31

Study Completion Date

2017-06-30

Brief Summary

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Kappa-opioid receptors mediate the sensation of itch in animals and humans. Asimadoline is an orally active, selective kappa-opioid receptor agonist and has demonstrated efficacy in several preclinical pruritus models. The purpose of this Phase 2 study is to evaluate the safety, tolerability and clinical efficacy of asimadoline in patients with pruritus associated with atopic dermatitis.

Detailed Description

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Asimadoline has been administered to over 1900 human subjects or patients in clinical trials and exhibits an acceptable safety profile. Due to its high selectivity for the kappa-opioid receptor, asimadoline does not produce mu-opioid like side-effects. Results from preclinical models indicate asimadoline significantly reduces the frequency of scratching induced by pruritic agents. This double-blind placebo-controlled clinical study is designed to evaluate the safety, tolerability and clinical efficacy of asimadoline in patients with pruritus associated with atopic dermatitis.

Conditions

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Pruritus Atopic Dermatitis

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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Placebo

Placebo-matched tablets twice daily for 4 weeks.

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

placebo-matched control

Asimadoline

Asimadoline tablets twice daily (5 mg total daily dose) for 8 weeks.

Group Type EXPERIMENTAL

Asimadoline

Intervention Type DRUG

kappa-opioid receptor agonist

Interventions

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Asimadoline

kappa-opioid receptor agonist

Intervention Type DRUG

Placebo

placebo-matched control

Intervention Type DRUG

Other Intervention Names

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No brand name, serial number and code name No brand name, serial number and code name

Eligibility Criteria

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Inclusion Criteria

1. Signed informed consent and must be able and willing to follow study procedures and instructions
2. Male or female subject aged 18 years or older (no upper age limit)
3. Established clinical diagnosis of atopic dermatitis for at least 6 months
4. Itching Visual Analog Scale (VAS) average worst itching score of at least 40 mm on a 100 mm scale
5. Female subject of childbearing potential and male subject of procreative capacity agree to use an effective method of contraception for the duration of the study

Exclusion Criteria

1. Pregnant, attempting to conceive, or nursing
2. Received phototherapy (ultraviolet B, psoralen plus ultraviolet A) within the previous 4 weeks
3. Received treatment with any of the following within the previous 2 weeks:

\- Topical or oral immunosuppressants or calcineurin inhibitors, sedating anti-histamines or anti-histamines taken for pruritus treatment, prescription topical corticosteroid creams or ointments, any other oral or topical steroids, aprepitant, naltrexone, pregabalin, gabapentin, or tricyclic antidepressants, or any other medications that, in the investigator's judgement, could affect the subject's pruritus or atopic dermatitis, and that are not specified below

OR taking any of the following and has not been on stable use for at least the previous 4 weeks:

\- Non-prescription topical hydrocortisone creams or ointments, lotions, moisturizers, emollients, bath oil treatments, non-sedating oral anti-histamines being taken for allergy treatment, selective serotonin reuptake inhibitor (SSRI) antidepressants.
4. Currently participating in other investigational clinical studies or having received investigational drugs in a clinical research study within the previous 3 months. Subjects currently enrolled in an observational study are eligible for participation in this study, however subjects must not enroll in a new observational study during the course of their participation in this study
5. Pruritus due to conditions other than atopic dermatitis (e.g., hepatitis, biliary cirrhosis, scabies) or due to medications known to cause pruritus
6. Acute illnesses, uncontrolled or unmanaged diabetes or thyroid disease, decompensated heart failure, cirrhosis or liver failure, chronic kidney disease, or uncontrolled psychiatric disease
7. Evidence or treatment of malignancy (other than localized basal cell cancer, squamous cell skin cancer, or cancer in situ that has been resected) within the previous 5 years
8. History of HIV infection
9. History of alcohol or drug abuse within the past 3 years
10. Diseases or conditions that could, in the opinion of the investigator, interfere with the assessment of safety and efficacy of the study drug and compliance of the subject with study visits/procedures (e.g. exacerbation of multiple sclerosis or other comorbid conditions)
11. Use of any product that acts as an inhibitor of P-glycoprotein (P-gp) or as a P-gp substrate (with the exception of topical ketoconazole product for skin or scalp) within the previous 4 weeks
12. Known allergy to asimadoline or its drug components.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Tioga Pharmaceuticals

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Dawn McGuire, MD FAAN

Role: STUDY_DIRECTOR

Tioga Pharmaceuticals, Inc.

Locations

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Clinical Research Center of Alabama

Birmingham, Alabama, United States

Site Status

Children's Hospital Los Angeles

Los Angeles, California, United States

Site Status

Axis Clinical Research

Los Angeles, California, United States

Site Status

Tory Sullivan, MD PA

North Miami Beach, Florida, United States

Site Status

Park Avenue Dermatology

Orange Park, Florida, United States

Site Status

Olympian Clinical Research

Tampa, Florida, United States

Site Status

Northwest Clinical Trials

Boise, Idaho, United States

Site Status

Sneeze, Wheeze and Itch Associates, LLC

Normal, Illinois, United States

Site Status

Forefront Dermatology

Carmel, Indiana, United States

Site Status

MediSearch Clinical Trials

Saint Joseph, Missouri, United States

Site Status

The Dermatology Group

Verona, New Jersey, United States

Site Status

Corning Center for Clinical Research

Corning, New York, United States

Site Status

UNC Dermatology and Skin Cancer Center

Chapel Hill, North Carolina, United States

Site Status

Wake Forest Baptist Health

Winston-Salem, North Carolina, United States

Site Status

Oregon Health and Science University

Portland, Oregon, United States

Site Status

University of Pennsylvania, Department of Dermatology

Philadelphia, Pennsylvania, United States

Site Status

Temple Itch Center

Philadelphia, Pennsylvania, United States

Site Status

Radiant Research, Inc.

Anderson, South Carolina, United States

Site Status

Medical Research South

Charleston, South Carolina, United States

Site Status

National Allergy and Asthma Research, LLC

North Charleston, South Carolina, United States

Site Status

Dermatology Treatment and Research Center, PA

Dallas, Texas, United States

Site Status

Sylvana Research Associates

San Antonio, Texas, United States

Site Status

Countries

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United States

Other Identifiers

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ASMP2006

Identifier Type: -

Identifier Source: org_study_id