Prospective, Multicenter Study on the Association Between Serum Ustekinumab Levels and Clinical, Biological and Endoscopic Remission in Patients With Crohn's Disease.

NCT ID: NCT07100093

Last Updated: 2025-08-03

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

100 participants

Study Classification

OBSERVATIONAL

Study Start Date

2021-07-01

Study Completion Date

2022-02-25

Brief Summary

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A prospective, non-commercial, multicenter study will be conducted in a cohort of patients initiating induction therapy and a cohort of patients with stable treatment with ustekinumab.

Detailed Description

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The present study aims to evaluate the association between serum levels (trough) of Ustekinumab and clinical, biological, endoscopic and radiological response/remission in patients with Crohn's disease, in order to determine threshold levels at induction and maintenance that may be predictors of efficacy.

Working hypothesis: Serum Ustekinumab levels in Crohn's disease patients are correlated with clinical, biochemical and endoscopic/radiological response/remission.

Patients with an established diagnosis of Crohn's disease by usual criteria (clinical, analytical, endoscopic, radiological and/or histological) who initiate treatment with Ustekinumab (induction cohort) or who are on maintenance treatment with Ustekinumab (maintenance cohort) in a stable dosis (a minimum of 6 months) will be included.

Conditions

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Ustekinumab Serum Levels in Patients With Crohn´s Disease

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Induction

Patients with an established diagnosis of Crohn's disease according to the usual criteria (clinical, analytical, endoscopic, radiological and/or histological) with inflammatory activity, who initiate treatment with ustekinumab for induction of remission. Activity will be considered the presence of clinical activity (Harvey-Bradshaw index ≥5) and/or elevation of fecal calprotectin (≥ 250µg/g; ≥100 in case of interventional CD) and/or presence of endoscopic activity (SES-CD ≥3).

Drug serum levels

Intervention Type PROCEDURE

Ustekinumab trough levels (prior to administration of the next dose of the drug) will be determined by enzyme-linked immunoadsorption assay (ELISA) methodology.

Maintenance

Patients with an established diagnosis of Crohn's disease according to usual criteria (clinical, analytical, endoscopic, radiological and/or histological) on maintenance treatment with ustekinumab stably for a minimum of 6 months.

Drug serum levels

Intervention Type PROCEDURE

Ustekinumab trough levels (prior to administration of the next dose of the drug) will be determined by enzyme-linked immunoadsorption assay (ELISA) methodology.

Interventions

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Drug serum levels

Ustekinumab trough levels (prior to administration of the next dose of the drug) will be determined by enzyme-linked immunoadsorption assay (ELISA) methodology.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Patients with an established diagnosis of CD according to standard criteria (clinical, analytical, endoscopic, radiological, and/or histological) with inflammatory activity, who begin treatment with ustekinumab for remission induction. Activity will be considered to be the presence of clinical activity (Harvey-Bradshaw index ≥5) and/or elevated fecal calprotectin (≥ 250μg/g; ≥100 in cases of surgically treated CD) and/or the presence of endoscopic activity (SES-CD ≥3).
* Patients with a confirmed diagnosis of CD according to standard criteria (clinical, analytical, endoscopic, radiological, and/or histological) undergoing stable maintenance treatment with ustekinumab for at least 6 months.

Exclusion Criteria

* Patients in whom ustekinumab is indicated for the prevention of post-surgical recurrence.
* Patients in whom ustekinumab is indicated for the control of perianal disease.
* Patients in whom ustekinumab is indicated for the control of extraintestinal manifestations.
* Pregnant women.
* Patients who are unable to understand the nature of the study, the procedures to be followed, or who are not able to sign an informed consent form.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Hospital Universitario La Paz

OTHER

Sponsor Role lead

Responsible Party

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María Dolores Martín Arranz, PhD

Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Hospital Universitario La Paz

Madrid, , Spain

Site Status

Countries

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Spain

Other Identifiers

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PI-4732

Identifier Type: -

Identifier Source: org_study_id

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