Study to Evaluate the Efficacy and Safety of Oral Difelikefalin as Adjunct Therapy to a Topical Corticosteroid for Moderate to Severe Pruritus in Subjects With Atopic Dermatitis

NCT ID: NCT05387707

Last Updated: 2024-02-22

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

TERMINATED

Clinical Phase

PHASE3

Total Enrollment

287 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-08-16

Study Completion Date

2024-02-02

Brief Summary

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This is a two-part, multicenter, randomized, double-blind study to evaluate the efficacy and safety of oral difelikefalin as adjunct therapy to a topical corticosteroid (TCS) for moderate-to-severe pruritus in adult subjects with atopic dermatitis (AD).

Detailed Description

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Part A of this study includes a 12-week Double-blind Treatment Period and a 52-week Open-label Extension Period. Subjects will be randomized to receive oral difelikefalin 0.25 mg tablets BID plus TCS cream, difelikefalin 0.5 mg tablets BID plus TCS cream, placebo tablets BID plus TCS cream or placebo tablets BID plus vehicle cream.

Part B of this study includes a 12-week Double-blind Treatment Period and 52-week Open-label Extension Period. Subjects will be randomized to receive oral difelikefalin 0.25 mg or 0.5 mg tablets BID plus TCS cream or oral placebo tablets BID plus TCS cream. Part A results at week 12 will inform Part B.

Subjects who participated in Part A of the study may not participate in Part B.

All subjects will sign an informed consent form (ICF) and undergo screening for study eligibility.

Conditions

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Pruritus Atopic Dermatitis

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Part A includes 4 arms and Part B includes 2 arms.
Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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Difelikefalin 0.25 mg tablets plus TCS cream

Oral difelikefalin tablets administered twice daily. TCS cream applied by study subjects to skin lesions once a day until control is achieved, then as needed.

Group Type EXPERIMENTAL

difelikefalin 0.25 mg

Intervention Type DRUG

Oral difelikefalin 0.25 mg tablets administered twice daily

TCS Cream

Intervention Type DRUG

TCS cream applied by study subjects to skin lesions once a day until control is achieved, then as needed

Difelikefalin 0.5 mg tablets plus TCS cream

Oral difelikefalin tablets administered twice daily. TCS cream applied by study subjects to skin lesions once a day until control is achieved, then as needed.

Group Type EXPERIMENTAL

difelikefalin 0.5 mg

Intervention Type DRUG

Oral difelikefalin 0.5 mg tablets administered twice daily

TCS Cream

Intervention Type DRUG

TCS cream applied by study subjects to skin lesions once a day until control is achieved, then as needed

Placebo tablets plus TCS cream

Oral placebo tablets administered twice daily. TCS cream applied by study subjects to skin lesions once a day until control is achieved, then as needed

Group Type ACTIVE_COMPARATOR

TCS Cream

Intervention Type DRUG

TCS cream applied by study subjects to skin lesions once a day until control is achieved, then as needed

Placebo

Intervention Type DRUG

Oral Placebo tablets administered twice daily

Placebo tablets plus Vehicle cream (Part A only)

Oral placebo tablets administered twice daily. Vehicle cream applied by study subjects to skin lesions once a day until control is achieved, then as needed

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Oral Placebo tablets administered twice daily

Vehicle Cream

Intervention Type DRUG

Vehicle Cream applied by study subjects to skin lesions once a day until control is achieved, then as needed

Interventions

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difelikefalin 0.25 mg

Oral difelikefalin 0.25 mg tablets administered twice daily

Intervention Type DRUG

difelikefalin 0.5 mg

Oral difelikefalin 0.5 mg tablets administered twice daily

Intervention Type DRUG

TCS Cream

TCS cream applied by study subjects to skin lesions once a day until control is achieved, then as needed

Intervention Type DRUG

Placebo

Oral Placebo tablets administered twice daily

Intervention Type DRUG

Vehicle Cream

Vehicle Cream applied by study subjects to skin lesions once a day until control is achieved, then as needed

Intervention Type DRUG

Other Intervention Names

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CR845 CR845

Eligibility Criteria

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Inclusion Criteria

To be eligible for inclusion into the study, a patient must meet the following criteria:

* Subject has clinically confirmed diagnosis of active AD;
* Subject has chronic pruritus related to AD;
* Subject has moderate to severe pruritus;
* Female subject is not pregnant or nursing during any period of the study.

Exclusion Criteria

A patient will be excluded from the study if any of the following criteria are met:

* Subject has clinically infected AD;
* Subject has pruritus attributed to a cause other than AD;
* Subject has any clinically significant medical condition or physical/laboratory/ECG/vital signs abnormality that would, in the opinion of the investigator, put the subject at undue risk or interfere with interpretation of study results.
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Cara Therapeutics, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Cara Therapeutics

Role: STUDY_DIRECTOR

Cara Therapeutics

Locations

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Cara Therapeutics Study Site

Scottsdale, Arizona, United States

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Cara Therapeutics Study Site

Fort Smith, Arkansas, United States

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Cara Therapeutics Study Site

Rogers, Arkansas, United States

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Cara Therapeutics Study Site

Fountain Valley, California, United States

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Lomita, California, United States

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Los Angeles, California, United States

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Redwood City, California, United States

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Sacramento, California, United States

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San Diego, California, United States

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Cara Therapeutics Study Site 2

Santa Monica, California, United States

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Santa Monica, California, United States

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Valencia, California, United States

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Denver, Colorado, United States

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Brandon, Florida, United States

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Coral Gables, Florida, United States

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Delray Beach, Florida, United States

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Hollywood, Florida, United States

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North Miami Beach, Florida, United States

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Orlando, Florida, United States

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Saint Augustine, Florida, United States

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St. Petersburg, Florida, United States

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Sweetwater, Florida, United States

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Tampa, Florida, United States

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Marietta, Georgia, United States

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Indianapolis, Indiana, United States

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Plainfield, Indiana, United States

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South Bend, Indiana, United States

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Overland Park, Kansas, United States

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Louisville, Kentucky, United States

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Baton Rouge, Louisiana, United States

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Houma, Louisiana, United States

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Metairie, Louisiana, United States

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New Orleans, Louisiana, United States

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Rockville, Maryland, United States

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Brighton, Massachusetts, United States

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Auburn Hills, Michigan, United States

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Clinton Township, Michigan, United States

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Detroit, Michigan, United States

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Waterford, Michigan, United States

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Hackensack, New Jersey, United States

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Huntersville, North Carolina, United States

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Raleigh, North Carolina, United States

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Athens, Ohio, United States

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Bexley, Ohio, United States

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Boardman, Ohio, United States

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Oklahoma City, Oklahoma, United States

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Oklahoma City, Oklahoma, United States

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Philadelphia, Pennsylvania, United States

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Plymouth Meeting, Pennsylvania, United States

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Sugarloaf, Pennsylvania, United States

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Charleston, South Carolina, United States

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Knoxville, Tennessee, United States

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Thompson's Station, Tennessee, United States

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Arlington, Texas, United States

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Austin, Texas, United States

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Bellaire, Texas, United States

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Houston, Texas, United States

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San Antonio, Texas, United States

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Springville, Utah, United States

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Spokane, Washington, United States

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Cara Therapeutics Study Site

Morgantown, West Virginia, United States

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Countries

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United States

Other Identifiers

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CR845-310501

Identifier Type: -

Identifier Source: org_study_id

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