Quantitative Fluorescence Molecular Imaging of Ustekinumab-800CW to Elucidate the Drug Distribution Throughout Inflamed Tissue in Crohn's Disease and Psoriasis.

Study Purpose

Crohn's Disease (CD) and psoriasis are chronic inflammatory diseases. Ustekinumab is a humanized monoclonal antibody. Ustekinumab is expensive and primary non-response is high in both CD and psoriasis. Currently, there are no predictors of response to ustekinumab and the actual mechanism of action has not yet been elucidated. To clarify the mechanism of action and gain a better understanding of the high primary non-response rates, the University Medical Center Groningen (UMCG) developed a tracer fluorescently labeling ustekinumab. This study aims to gain insight into ustekinumab distribution and concentrations in the gut. The current study aims to identify the ustekinumab target cells in the inflamed gut mucosa and skin using quantitative fluorescence molecular endoscopy (qFME). By gaining insight into local ustekinumab concentrations, drug distribution, and by discovering target cells, we expect to gain insight into the mechanism of action of ustekinumab.

Recruitment Criteria

Accepts Healthy Volunteers

Healthy volunteers are participants who do not have a disease or condition, or related conditions or symptoms

No
Study Type

An interventional clinical study is where participants are assigned to receive one or more interventions (or no intervention) so that researchers can evaluate the effects of the interventions on biomedical or health-related outcomes.


An observational clinical study is where participants identified as belonging to study groups are assessed for biomedical or health outcomes.


Searching Both is inclusive of interventional and observational studies.

Interventional
Eligible Ages 18 Years and Over
Gender All
More Inclusion & Exclusion Criteria

Inclusion Criteria:

  • - Established diagnosis of CD or PsO.
  • - Active disease: - CD cohort: clinically active disease of the bowel defined either clinically as at least moderate activity using dedicated scoring indices (for definitions of disease activity, see below) or biochemically active disease as defined by a faecal calprotectin > 200 ug/g; - PsO: clinically active disease of at least PASI ≥ 10 or clinically active disease as assessed by a dermatologist; - Ustekinumab naïve and eligible for ustekinumab treatment (except for patients in the treatment arm); - Age ≥ 18 years; - Written informed consent.

Exclusion Criteria:

  • - Medical or psychiatric conditions that compromise the patient's ability to give informed consent according to treating medical physician; - Concurrent uncontrolled medical conditions according to treating medical physician; - Prior ustekinumab treatment (except for patients in the treatment arm); - Ustekinumab contraindicated as therapy; - Pregnancy or breast feeding.
A negative pregnancy test must be available for women of childbearing potential (i.e. premenopausal women with intact reproductive organs and women less than two years after menopause);
  • - Received a different investigational drug within 30 days prior to the dose of ustekinumab-800CW according to the patient's medical history; - History of infusion reactions to ustekinumab or other monoclonal antibodies according to the patient's medical history; - Received any live (including attenuated) vaccination within the 8 weeks prior to the inclusion.
Live vaccines are not allowed during the study.

Trial Details

Trial ID:

This trial id was obtained from ClinicalTrials.gov, a service of the U.S. National Institutes of Health, providing information on publicly and privately supported clinical studies of human participants with locations in all 50 States and in 196 countries.

NCT05725876
Phase

Phase 1: Studies that emphasize safety and how the drug is metabolized and excreted in humans.

Phase 2: Studies that gather preliminary data on effectiveness (whether the drug works in people who have a certain disease or condition) and additional safety data.

Phase 3: Studies that gather more information about safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs.

Phase 4: Studies occurring after FDA has approved a drug for marketing, efficacy, or optimal use.

Phase 1
Lead Sponsor

The sponsor is the organization or person who oversees the clinical study and is responsible for analyzing the study data.

University Medical Center Groningen
Principal Investigator

The person who is responsible for the scientific and technical direction of the entire clinical study.

N/A
Principal Investigator Affiliation N/A
Agency Class

Category of organization(s) involved as sponsor (and collaborator) supporting the trial.

Other
Overall Status Not yet recruiting
Countries
Conditions

The disease, disorder, syndrome, illness, or injury that is being studied.

Psoriasis, Crohn Disease
Arms & Interventions

Arms

Experimental: Ustekinumab naïve patients

Experimental: Ustekinumab treatment 12+ weeks

Interventions

Drug: - Ustekinumab

Patients not on therapy and patients on therapy will undergo fluorescence molecular imaging.

Contact Information

This trial has no sites locations listed at this time. If you are interested in learning more, you can contact the trial's primary contact:

W.B. Nagengast, MD, PhD, PharmD

w.b.nagengast@umcg.nl

+31503612620

For additional contact information, you can also visit the trial on clinicaltrials.gov.

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