The Contact Activation System and Ulcerative Colitis

NCT ID: NCT04621006

Last Updated: 2025-02-25

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

Total Enrollment

102 participants

Study Classification

OBSERVATIONAL

Study Start Date

2021-05-01

Study Completion Date

2023-11-30

Brief Summary

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The study aims to describe alterations in the contact activation system during active and inactive ulcerative colitis.

Contact activation system measures are compared in a cross sectional (healthy controls vs. active disease) and longitudinal (active diasese vs. inactive disease) fashion.

Detailed Description

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We include and follow up on 102 adults with active ulcerative colitis. Visits are week 0 (inclusion), 6, 12 and 26 (end of study). We obtain plasma and fecal samples at each visit. Whereas we obtain colonic tissue samples only at inclusion and end of study.

Registered data are:

* Demographics realate to UC and general wellbeing.
* Clinical parametres used for UC evaluation are PRO2, SCCAI, CRP, fecal calprotectin, Mayo endoscopic subscore and Nancy index.
* The contact activation system is characterised by FXII, prekallikrein, kallikrein generation, HK, cHK (specific to plasma kallikrein), cHK (specific to tissue kallikrein), C1 inhibitor and Kallistatin.
* Polymerized alpha-1-antitrypsin is characterised by the degree of polymerization and the capacity to activate the contact activation system.

Conditions

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Ulcerative Colitis

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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UC group

Patients with active ulcerative colitis

Continuously assessment of disease activity

Intervention Type DIAGNOSTIC_TEST

Continuous measures of disease activity and activity in the contact activation system.

Interventions

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Continuously assessment of disease activity

Continuous measures of disease activity and activity in the contact activation system.

Intervention Type DIAGNOSTIC_TEST

Eligibility Criteria

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Inclusion Criteria

* Fulfill diagnostic criteria of ulcerative colitis
* SCCAI score ≥ 5
* Mayo Endoscopic Subscore ≥ 1
* Age ≥ 18 years
* Most understand written and oral information in Danish
* Informed consent must be given

Exclusion Criteria

* Pregnancy
* Infection at inclusion
* Any existing disease at inclusion:

* liver disease or defect in CAS
* inflammatory rheumatologic or dermatologic disease
* cardiovascular or renal disease
* immunodeficiency or hematologic diseases
* malignancies
* Medication with

* Systemic corticosteroids at inclusion
* ACE-inhibitor
* Acetylsalicylic acid/NSAID
* Warfarin, Phenprocoumon, NOAC and heparins
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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UMC Utrecht

OTHER

Sponsor Role collaborator

University of Southern Denmark

OTHER

Sponsor Role collaborator

Esbjerg Hospital - University Hospital of Southern Denmark

OTHER

Sponsor Role lead

Responsible Party

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Morten Lee Halling

Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Morten L Halling, M.D.

Role: PRINCIPAL_INVESTIGATOR

Department of Medical Gastroenterology, University Hospital of Southern Denmark - Esbjerg

Locations

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Department of Medical Gastroenterology, University Hospital of Southern Denmark

Esbjerg, , Denmark

Site Status

Countries

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Denmark

Other Identifiers

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CAS UC

Identifier Type: -

Identifier Source: org_study_id

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