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Psoriasis is an inflammatory disease involving the skin, the joints and the vascular compartment. The mechanisms linking inflammation in the skin and joints and in the vascular walls are poorly understood. One hypothesis for the increase in vascular inflammation observed in patients with psoriasis involves circulating pro-inflammatory cytokines. Patients with psoriasis have an increase in serum levels of tumor necrosis factor alpha (TNF-alpha), Interleukin-17 (IL-17), IL-22, IL-6 as well as a the chemokine S100A913. It is possible that one of those cytokines/chemokine induces vascular inflammation in the vascular compartment. The purpose of this cross sectional retrospective study is to highlight the correlation between vascular wall inflammation using 18F-2-fluoro-2-deoxy-D-glucose - Positron Emission Tomography (FDG-PET) fluorodeoxyglucose technology and pro-inflammatory cytokines/chemokine.
Full description
Baseline frozen serum samples will be identified from the 107 enrolled Inno-6025 (Abbvie A13-935) (ClinicalTrials.gov Identifier NCT01722214) patients who also underwent a pre-adalimumab FDG-PET scan for the study. Serum cytokine and chemokine levels in these samples will be measured; IL-17 and IL-22 using the Singulex immunoassay platform, and S100A9, IL-6 and TNF alpha using multiplex ELISA. Vascular inflammation will be measured as the target to background ratio (TBR) in the ascending aorta using PET-scan technology. Correlation analyses will be performed between serum levels of cytokines and a chemokine and vascular inflammation.
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Inclusion criteria
Patient has plaque psoriasis.
Patient has at least a 6 month history of plaque psoriasis.
Patient has a Body Surface Area (BSA) covered with psoriasis of 5% or more at Day 0.
Patient is a candidate for systemic therapy.
Patient is male or female, 18 to 80 years of age at time of consent.
Patient's weight at screening is a maximum of 180 kg.
Patient using medication to control angina, hypertension, serum lipids and any medication that can have an effect on inflammation must be on a stable dose for at least 8 weeks before Day 0.
Patient has an ascending aorta atherosclerotic plaque inflammation target-to-background ratio of 1.6 or more as determined by 18-FDG uptake measured by PET scanning.
Patient or patient's partner has been in a menopausal state for at least a year, is surgically sterile (hysterectomy, bilateral oophorectomy, tubal ligation or vasectomy), is clinically diagnosed infertile, has a same-sex partner, is abstinent, or is willing to use effective contraceptive method for at least 30 days before Day 0 and at least 6 months after the last study drug administration. Effective contraceptive methods are:
Female patients of childbearing potential must have a negative serum pregnancy test at the Screening visit.
Patient is judged to be in good general health as determined by the principal investigator based upon the results of medical history, laboratory profile, physical examination, and Chest X-Ray (CXR) performed at Screening.
Patient will be evaluated for latent TB infection with a purified protein derivative (PPD) or a Quantiferon Gold test and CXR. Patient who demonstrates evidence of latent TB infection (either PPD more than or equal to 5 mm of induration or positive Quantiferon Gold, irrespective of Bacillus Calmette-Guerin (BCG) vaccination status and negative CXR findings for active TB, and/or suspicious CXR findings) will not be allowed to participate in the study.
Patient must be able and willing to provide written informed consent and comply with the requirements of this study protocol.
Patient must be able and willing to self-administer subcutaneous (SC) injections or have a qualified person available to administer SC injections.
Exclusion criteria
96 participants in 1 patient group
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Data sourced from clinicaltrials.gov
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