Gastrointestinal STRING Test With Oral Immunotherapy

NCT ID: NCT04943744

Last Updated: 2024-09-19

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

TERMINATED

Clinical Phase

EARLY_PHASE1

Total Enrollment

13 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-05-17

Study Completion Date

2024-05-17

Brief Summary

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This STRING study will examine markers of esophageal inflammation using a minimally-invasive testing device, the esophageal string test (EST). The primary objective is to determine the effect of omalizumab (Xolair) and dupilumab (Dupixent) on markers of eosinophilic inflammation in the esophagus of subjects treated with omalizumab-facilitated mOIT(mult-allergen oral immunotherapy) and/or mOIT with concurrent dupilumab.

Detailed Description

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This is a companion study to a phase 2 randomized, controlled, double-blind clinical trial using biologics to improve multi-allergen oral immunotherapy (mOIT) outcomes. The parent study (COMBINE NCT03679676) consists of a screening period, 8 weeks of omalizumab or placebo injections, and 24 weeks of OIT with dupilumab or placebo injections followed by an off-treatment period.

This STRING companion study will examine markers of esophageal inflammation during the COMBINE study using a minimally-invasive testing device, the esophageal string test (EST). If participants of COMBINE consent to this companion study, they will undergo an esophageal string test at the following time points in COMBINE:

* During screening, prior to week 0, which will be baseline for the STRING esophageal test
* Week 8, After the 8 weeks of treatment with omalizumab/placebo
* If dose-related gastrointestinal (GI) side effects occur during the week 10-32 treatment period (OIT and dupilumab/placebo)
* At Week 32, after 24 weeks of treatment with OIT and dupilumab or placebo

Conditions

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Eosinophilic Disorder Food Allergy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

This STRING companion study will examine markers of esophageal inflammation during the COMBINE study using a minimally-invasive testing device, the esophageal string test (EST). If participants of COMBINE consent to this companion study, they will undergo an esophageal string test at the following time points in COMBINE:

* During screening, prior to week 0, which will be baseline for the STRING esophageal test
* Week 8, After the 8 weeks of treatment with omalizumab/placebo
* If dose-related gastrointestinal (GI) side effects occur during the week 10-32 treatment period (OIT and dupilumab/placebo)
* At Week 32, after 24 weeks of treatment with OIT and dupilumab or placebo
Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

Study Groups

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String Test-cohort A

Participants in the COMBINE study will have an EST performed at pre- specified timepoints (screening, week 8, and week 32) and as needed depending on GI symptoms.

A. Omalizumab for 8 weeks followed by mOIT with placebo for dupilumab for 24 weeks (Cohort A: Omalizumab-facilitated mOIT)

Group Type OTHER

Entero-tracker

Intervention Type DEVICE

Esophageal STRING test (Entero-tracker)

omalizumab

Intervention Type BIOLOGICAL

Used in the parent study

String Test-cohort B

Participants in the COMBINE study will have an EST performed at pre- specified timepoints (screening, week 8, and week 32) and as needed depending on GI symptoms.

B. Omalizumab for 8 weeks followed by mOIT with dupilumab for 24 weeks (Cohort B: Omalizumab-facilitated mOIT with concurrent dupilumab)

Group Type OTHER

Entero-tracker

Intervention Type DEVICE

Esophageal STRING test (Entero-tracker)

omalizumab

Intervention Type BIOLOGICAL

Used in the parent study

dupliumab

Intervention Type BIOLOGICAL

Used in the parent study

String Test-cohort C

Participants in the COMBINE study will have an EST performed at pre- specified timepoints (screening, week 8, and week 32) and as needed depending on GI symptoms.

C. Placebo for omalizumab for 8 weeks followed by mOIT with dupilumab for 24 weeks (Cohort C: mOIT with concurrent dupilumab)

Group Type OTHER

Entero-tracker

Intervention Type DEVICE

Esophageal STRING test (Entero-tracker)

dupliumab

Intervention Type BIOLOGICAL

Used in the parent study

Interventions

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Entero-tracker

Esophageal STRING test (Entero-tracker)

Intervention Type DEVICE

omalizumab

Used in the parent study

Intervention Type BIOLOGICAL

dupliumab

Used in the parent study

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

* Able to swallow the EST.

Exclusion Criteria

\-
Minimum Eligible Age

5 Years

Maximum Eligible Age

55 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Stanford University

OTHER

Sponsor Role lead

Responsible Party

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R. Sharon Chinthrajah

Medical Director, Clinical Research Uni

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Sharon Chinthrajah, MD

Role: PRINCIPAL_INVESTIGATOR

Stanford University

Locations

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Sean N Parker Center for Allergy and Asthma Research at Stanford University

Palo Alto, California, United States

Site Status

Countries

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United States

Other Identifiers

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58997

Identifier Type: -

Identifier Source: org_study_id

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