Study Of The Mechanism Of Action Of CP-690,550 In The Skin Of Subjects With Moderate To Severe Chronic Plaque Psoriasis

March 30, 2015 updated by: Pfizer

An Exploratory Phase 2a, Randomized, Double-blind, Placebo-controlled, Multicenter Study To Assess Mechanism Of Action (Moa) Of Cp-690,550 In The Skin When Administered Orally At 10 Mg Twice Daily (Bid) For 12 Weeks In Subjects With Moderate To Severe Chronic Plaque Psoriasis

There are cells in the skin and blood of humans with chronic moderate to severe plaque psoriasis with specific activities that may determine the effectiveness of treatment. These activities may be described by obtaining samples of skin and blood and analyzing them using a variety of tests.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The final subject in Cohort 1 completed the study on 19-Nov-2013 (LSLV date). Because the study analyses were novel and exploratory, they required extensive analyses by study team and external experts. As a result of this analysis it was determined on 21-July-2014 that the data from Cohort 1 were sufficiently definitive and that enrollment of Cohort 2 would not be justified. Since this decision resulted in the LSLV for Cohort 1 becoming the LSLV for the study, the full data analysis and reporting is not projected to be complete within 12 Months of LSLV. The final analysis and final reporting is planned to be completed on 18-Feb-2015. Results for this data are anticipated to be released in April 2015.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
12

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • California
      • Los Angeles, California, United States, 90045
        • Dermatology Research Associates
    • Florida
      • Tampa, Florida, United States, 33609
        • Olympian Clinical Research
    • Texas
      • Dallas, Texas, United States, 75246
        • Menter Dermatology Research Institute
      • Houston, Texas, United States, 77004
        • Center for Clinical Studies
      • Houston, Texas, United States, 77030
        • Center for Clinical Studies

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Adults over 18 years of age with a diagnosis of chronic moderate to severe plaque psoriasis for at least 12 months; in generally good health; on stable dose of non-prohibited medications; able to stop current psoriasis therapy (systemic or topical) for several weeks prior to and during study participation.

Exclusion Criteria:

  • Serious underlying disease including viral disorders such as hepatitis or HIV or skin condition that would interfere with skin biopsies or evaluation of psoriasis; conditions that could interfere with drug absorption after oral administration; history of malignancy or auto-immune disease.
  • Use of oral or injected corticosteroids (steroids).

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: TREATMENT
  • Allocation: RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: TRIPLE

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
EXPERIMENTAL: Cohort 1
Drug: (CP-6890,550) Tofacitinib
2 x 5 mg oral capsules taken twice daily (every 12 hours) for 12 consecutive weeks
Drug: Placebo
2 matching oral capsules taken twice daily (every 12 hours) for 12 consecutive weeks
EXPERIMENTAL: Cohort 2
Drug: Placebo
2 matching oral capsules taken twice daily (every 12 hours) for 12 consecutive weeks
Drug: (CP-690,550) Tofacitinib
2 x 5 mg oral capsules taken twice daily (every 12 hours) for 12 weeks

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Percentage of Participants Achieving a 75% Reduction in the Psoriasis Area and Severity Index (PASI75) at Week 12
Time Frame: Week 12
Combined assessment of lesion severity and area affected into single score; range equals (=) 0 (no disease) to 72 (maximal disease). Body divided into 4 sections=head, upper/lower limbs, trunk; each area scored by itself and scores combined for final PASI. For each section percent area of skin involved was estimated: 0 (0%) to 6 (90-100%) and severity estimated by clinical signs of erythema, induration, scaling; ranged 0-4: 0=none, 1=slight, 2=moderate, 3=marked, 4=very marked. Final PASI=sum of severity parameters for each section*area score*weighing factor (head=0.1, upper limbs=0.2, trunk=0.3, lower limbs=0.4) summed over all sections.
Week 12
Percentage of Participants Achieving a Physician's Global Assessment (PGA) Response of "Clear" or "Almost Clear" at Week 12
Time Frame: Week 12
PGA psoriasis is scored on a 5-point scale, reflecting a global consideration of the erythema, induration and scaling across all psoriatic lesions. PGA of Psoriasis scale ranges from 0 (no psoriasis) to 4 (severe disease). ‘Clear’ and “Almost clear’ includes all participants who were scored as a 0 or 1.
Week 12

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Psoriasis Area and Severity Index (PASI) Score by Visit
Time Frame: Baseline and Weeks 1, 2, 4, and 12
Combined assessment of lesion severity and area affected into single score. Body was divided into 4 sections: head, arms, trunk, legs. For each section, percent area of skin involved was estimated: 0=0% to 6=90â€"100%. Severity was estimated by clinical signs: erythema, induration, desquamation; scale: 0= none to 4= maximum. Final PASI = sum of severity parameters for each section*area score*weight of section (head: 0.1, arms: 0.2, body: 0.3, legs: 0.4) summed over all sections; total possible score range: 0= no disease to 72= maximal disease.
Baseline and Weeks 1, 2, 4, and 12
Change From Baseline in PASI by Visit
Time Frame: Weeks 1, 2, 4 and 12
Combined assessment of lesion severity and area affected into single score. Body was divided into 4 sections: head, arms, trunk, legs. For each section, percent area of skin involved was estimated: 0=0% to 6=90â€"100%. Severity was estimated by clinical signs: erythema, induration, desquamation; scale: 0= none to 4= maximum. Final PASI = sum of severity parameters for each section*area score*weight of section (head: 0.1, arms: 0.2, body: 0.3, legs: 0.4) summed over all sections; total possible score range: 0= no disease to 72= maximal disease.
Weeks 1, 2, 4 and 12
Percent Change From Baseline in PASI by Visit
Time Frame: Weeks 1, 2, 4, and 12
Combined assessment of lesion severity and area affected into single score. Body was divided into 4 sections: head, arms, trunk, legs. For each section, percent area of skin involved was estimated: 0= 0% to 6= 90â€"100%. Severity was estimated by clinical signs: erythema, induration, desquamation; scale: 0= none to 4= maximum. Final PASI = sum of severity parameters for each section*area score*weight of section (head: 0.1, arms: 0.2, body: 0.3, legs: 0.4) summed over all sections; total possible score range: 0= no disease to 72= maximal disease.
Weeks 1, 2, 4, and 12
Percentage of Participants Achieving a PASI75 Response at Weeks 1, 2, and 4
Time Frame: Weeks 1, 2, and 4
Combined assessment of lesion severity and area affected into single score; range=0 (no disease) to 72 (maximal disease). Body divided into 4 sections=head, upper/lower limbs, trunk; each area scored by itself and scores combined for final PASI. For each section percent area of skin involved was estimated: 0 (0%) to 6 (90-100%) and severity estimated by clinical signs of erythema, induration, scaling; ranged 0-4: 0=none, 1=slight, 2=moderate, 3=marked, 4=very marked. Final PASI=sum of severity parameters for each section*area score*weighing factor (head=0.1, upper limbs=0.2, trunk=0.3, lower limbs=0.4) summed over all sections.
Weeks 1, 2, and 4
Change From Baseline in PGA Score by Visit
Time Frame: Weeks 1, 2, 4, and 12
PGA psoriasis is scored on a 5-point scale, reflecting a global consideration of the erythema, induration, and scaling across all psoriatic lesions. PGA of Psoriasis scale ranges from 0 (no psoriasis) to 4 (severe disease). The severity scores of 3 components (erythema, induration, and scaling) are averaged and rounded to the nearest whole number to determine the PGA score.
Weeks 1, 2, 4, and 12
Percentage of Participants in Each PGA Category at Various Timepoints by Baseline Category
Time Frame: Baseline and Weeks 1, 2, 4, and 12
Baseline and Weeks 1, 2, 4, and 12
Percentage of Participants by PGA Response Category and Timepoint
Time Frame: Baseline and Weeks 1, 2, 4, and 12
PGA psoriasis is scored on a 5-point scale, reflecting a global consideration of the erythema, induration and scaling across all psoriatic lesions. PGA of Psoriasis scale ranges from 0 (no psoriasis) to 4 (severe disease). Response category scores: 0=clear; 1=almost clear; 2=mild; 3=moderate; and 4=severe. The severity scores of 3 components (erythema, induration, and scaling) are averaged and rounded to the nearest whole number to determine the PGA score.
Baseline and Weeks 1, 2, 4, and 12
Body Surface Area (BSA)
Time Frame: Baseline and Weeks 1, 2, 4, and 12
Assessment of BSA with psoriasis was performed separately for 4 body regions: head and neck, upper limbs, trunk (including axillae and groin), and lower limbs (including buttocks). The percent surface area with psoriasis was estimated by means of the handprint method, where the full palmar hand of the participant (ie, the participant's fully extended palm, fingers and thumb together) represents approximately 1% of the total BSA. The number of handprints of psoriatic skin in a body region can be used to determine the extent (%) to which a body regions is involved with psoriasis. In each body region, the percent body region surface area with psoriasis is multiplied by the Body Region Weighting (head and neck=10%, upper limbs=5%, trunk [including axillae and groin]=3.33% and lower limbs [including buttocks]=2.5%). BSA (%)=0.1Sh + 0.2Sh+0.3St+0.4Sl, where S=body region suface area with psoriasis: h=head; u=upper limbs; t=trunk; l=lower limbs.
Baseline and Weeks 1, 2, 4, and 12
Change From Baseline in BSA
Time Frame: Weeks 1, 2, 4, and 12
Assessment of BSA with psoriasis was performed separately for 4 body regions: head and neck, upper limbs, trunk (including axillae and groin), and lower limbs (including buttocks). The percent surface area with psoriasis was estimated by means of the handprint method, where the full palmar hand of the participant (ie, the participant's fully extended palm, fingers and thumb together) represents approximately 1% of the total BSA. The number of handprints of psoriatic skin in a body region can be used to determine the extent (%) to which a body regions is involved with psoriasis. In each body region, the percent body region surface area with psoriasis is multiplied by the Body Region Weighting (head and neck=10%, upper limbs=5%, trunk [including axillae and groin]=3.33% and lower limbs [including buttocks]=2.5%). BSA (%)=0.1Sh + 0.2Sh+0.3St+0.4Sl, where S=body region suface area with psoriasis: h=head; u=upper limbs; t=trunk; l=lower limbs.
Weeks 1, 2, 4, and 12
Percent Change From Baseline in BSA
Time Frame: Weeks 1, 2, 4, and 12
Assessment of BSA with psoriasis was performed separately for 4 body regions: head and neck, upper limbs, trunk (including axillae and groin), and lower limbs (including buttocks). The percent surface area with psoriasis was estimated by means of the handprint method, where the full palmar hand of the participant (ie, the participant's fully extended palm, fingers and thumb together) represents approximately 1% of the total BSA. The number of handprints of psoriatic skin in a body region can be used to determine the extent (%) to which a body regions is involved with psoriasis. In each body region, the percent body region surface area with psoriasis is multiplied by the Body Region Weighting (head and neck=10%, upper limbs=5%, trunk [including axillae and groin]=3.33% and lower limbs [including buttocks]=2.5%). BSA (%)=0.1Sh + 0.2Sh+0.3St+0.4Sl, where S=body region suface area with psoriasis: h=head; u=upper limbs; t=trunk; l=lower limbs.
Weeks 1, 2, 4, and 12
Itch Severity Item (ISI) Score by Visit
Time Frame: Baseline and Weeks 1, 2, 4, and 12
The severity of itch (pruritus) due to psoriasis was assessed using the ISI, a single-item, horizontal numeric rating scale. Participants were asked to rate "your worst itching due to psoriasis over the past 24 hours" on a numeric rating scale anchored by the terms "No itching" (0) and "Worst possible itching" (10) at the ends. the baseline is defined as the average of all available diary entries before Baseline/Day 1 and the in-clinic measurement on Baseline/day 1. Week 1 is the mean of daily values of study days 2 to 8 and Week 2 is the mean of daily values of study days 9 to 15.
Baseline and Weeks 1, 2, 4, and 12
Change From Baseline in ISI by Visit
Time Frame: Weeks 1, 2, 4 and 12
ISI, a single-item, horizontal numeric rating scale. Participants were asked to rate "your worst itching due to psoriasis over the past 24 hours" on a numeric rating scale anchored by the terms "No itching" (0) and "Worst possible itching" (10) at the ends. The baseline is defined as the average of all available diary entries before Baseline/Day 1 and the in-clinic measurement on Baseline/Day 1. Week 1 is the mean of daily values of study days 2 to 8 and Week 2 is the mean of daily values of study days 9 to 15. A negative value indicates an improvement.
Weeks 1, 2, 4 and 12
Target Plaque Severity Score (TPSS) by Visit
Time Frame: Baseline and Weeks 1, 2, 4, and 12
Target lesions were selected at baseline and followed for the duration of the study. Each target lesion was scored by the investigator on severity of erythema, induration, and scaling according to a 5-point (0 to 4) severity scale with a maximum sum score for a plaque of 12. The TPSS was calculated as the sum of the scores for erythema, induration, and scaling; the score can vary in increments of 1 unit from 0 to 12.
Baseline and Weeks 1, 2, 4, and 12
Percent Change From Baseline in TPSS by Visit
Time Frame: Weeks 1, 2, 4, and 12
Target lesions were selected at baseline and followed for the duration of the study. Each target lesion was scored by the investigator on severity of erythema, induration, and scaling according to a 5-point (0 to 4) severity scale with a maximum sum score for a plaque of 12. The TPSS was calculated as the sum of the scores for erythema, induration, and scaling; the score can vary in increments of 1 unit from 0 to 12. A negative value indicated improvment.
Weeks 1, 2, 4, and 12

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Pfizer

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 1, 2013

Primary Completion (ACTUAL)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
November 1, 2013

Study Completion (ACTUAL)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 1, 2013

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
October 16, 2012

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 16, 2012

First Posted (ESTIMATE)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
October 18, 2012

Study Record Updates

Last Update Posted (ESTIMATE)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 13, 2015

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 30, 2015

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
March 1, 2015

More Information

Terms related to this study

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Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • A3921147

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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