A Study to Evaluate a Leukapheresis Treatment in Patients With Ulcerative Colitis

IBD Column Therapies International AB23 enrolled

Overview

The purpose of this study is to determine whether a treatment of a novel leukapheresis column is safe and effective in patients with moderate to severe ulcerative colitis.

Ulcerative colitis (UC) is a chronic and relapsing disease and is characterized by superficial inflammation in the colonic epithelium. The inflammation is maintained by continuous supply of inflammatory cells from the circulating blood to the intestinal mucosa. Existing therapy e.g. corticosteroids and immunosuppressants are inadequate with an overall long-term remission rate of only 50-60%. Those treatments are also associated with severe side effects why there is a need of new therapies. The aim of this study is to investigate a novel leukapheresis treatment with the potential to reduce the number of inflammatory cells homing to the gut mucosa. By drawing blood from the patient and pass it through the investigational column the inflammatory cells are removed. The blood, depleted of the inflammatory cells, is returned to the patient. The treatment thus enable down-regulation of the inflammation and consequently the inflammation can heal. The treatment is called Tailored leukapheresis.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

QUADRUPLE

Enrollment

Conditions

Ulcerative Colitis

Interventions

Active TLA Gut™ columnDEVICE

Five consecutive treatment sessions. The therapy will be administrated every second day.

PlaceboDEVICE

Five consecutive treatment sessions. The placebo therapy will be administrated every second day.

Eligibility

Sex: ALLMin age: 18 YearsMax age: 75 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Clinical diagnosis of active, moderate-to-severe, Ulcerative Colitis. Exclusion criteria; * Local intestinal treatments with suppositories, enemas or clysmas during the last 4 weeks * Current daily smoking habits * Other severe diseases as detailed in the protocol * History of hypersensitivity to heparin

Locations (1)

Södersjukhuset

Stockholm, Sweden

Outcomes

Primary Outcomes

Expression level of MHC class II on antigen presenting cells.

The primary outcome will be assessed by flow cytometry.

Time frame: change from baseline at day 5, 12, 28, 42 and 98.

Secondary Outcomes

The number of cells and/or expression level of gut homing and activation markers on lymphocytes and monocytes. Safety and tolerability. Clinical effect on signs and symptoms of the disease.

The immunological analysis will be peformed by flow cytometry. The safety will be measured by recording adverese events at each visit. The disease activity will be assessed by using the Mayo Score Questionnaire.

Time frame: change from baseline at day 5, 12,28, 42, 98.

Data from ClinicalTrials.gov

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