Volatiles in Exhaled Breath and Blood in Crohn's Disease: Validation Cohort

July 10, 2018 updated by: Agnieszka Smolinska, Dartmouth-Hitchcock Medical Center
This study evaluates the use of exhaled air analysis as tool to monitor the disease activity in Crohn's Disease (CD). This study is a validation of the previous findings. In this study the participant will be asked to donate exhaled air, blood samples and fecal samples. The breath samples will be used to measure various volatile metabolites in breath. The breath air will be next used to validate the previous findings. The blood samples will be used to define the origin of volatile metabolites in breath. Finally, the potential of exhaled breath analysis as non-invasive marker of diseases activity will be compared to established fecal calprotectin.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Terminated

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

In the recent study(doi: 10.1097/Mib.0000000000000436) it was shown the potential of analysis of exhaled air to differentiate active and inactive state of Crohn's Disease (CD). Although, the molecules found in this cohort have shown potential to differentiate between CD patients in remission or with active disease, the validation of the outcomes has to be performed in new population. One crucial pathophysiologic factor in CD is excessive lipid peroxidation during oxidative stress, i.e. during overproduction of oxidants compared to the protective antioxidants. Oxidative stress is a potential aetiological factor and/or a triggering factor in CD. Many volatile compounds including hydrocarbons and aldehydes are produced during oxidative stress and they can be non-invasively measured in exhaled air 5, 6. However, exhaled breath contains volatile metabolites originating from previous or current uptake of environmental contaminants, and more interestingly from metabolism of foreign organisms (bacteria, viruses, fungi or yeasts). Therefore, it is important to study not only exhaled air but also blood in which blood borne volatile molecules can be measured. Since the current study also aims for validating the use of volatile molecules in exhaled air as non-invasive markers for disease activity in CD patients, the investigators will compare the outcome of exhaled air analysis with currently established non-invasive measure of disease activity, i.e. fecal calprotectin.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
5

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • New Hampshire
      • Lebanon, New Hampshire, United States, 03766
        • Dartmouth Hitchcock Medical Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Our target population will consist of individuals with established diagnosis of Crohn's Disease (CD). The target population will include male and female between the ages of 18 and 65 years and standard BMI (between 19 and 30). Potential study participants will be excluded if having any disease compromising immune system (such as HIV positive status or patients after organ transplantations), diagnosis of any liver disease, active and untreated tuberculosis and chemotherapy agents. All potential participants must have scheduled appointment for colonoscopy.

Description

Inclusion Criteria:

  • Age: 18-65
  • BMI: 19-30
  • scheduled colonoscopy

Exclusion Criteria:

  • disease compromising immune system (such as HIV positive status or patients after organ transplantation
  • liver disease
  • active and untreated tuberculosis
  • chemotherapy agents

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Cohort
  • Time Perspectives: Cross-Sectional

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Entire Cohort
This is an observational/validation study and there is no intervention involved. Exhaled air samples, blood samples, and fecal samples will be obtained.
Other: Specimen sampling
exhaled air samples blood samples fecal samples

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Volatile organic compounds profile: volatile compound concentrations in breath
Time Frame: The samples will be collected within no more than one week before scheduled colonoscopy.
The exhaled air samples will be used to first validate the volatile compounds for disease activity in Crohn's Disease.
The samples will be collected within no more than one week before scheduled colonoscopy.
Metabolic profile: metabolite concentrations in blood
Time Frame: The samples will be collected within no more than one week before scheduled colonoscopy.
Blood samples will be used to better understand the origin of the volatile compounds in breath.
The samples will be collected within no more than one week before scheduled colonoscopy.
Fecal calprotectin (µg/g) in fecal samples
Time Frame: The samples will be collected within no more than one week before scheduled colonoscopy.
Fecal calprotectin will be measured as indicator of the migration of neutrophils to the intestinal mucosa.
The samples will be collected within no more than one week before scheduled colonoscopy.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Dartmouth-Hitchcock Medical Center

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Maastricht University

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Agnieszka Smolinska, PhD, Dartmouth/Maastricht University
  • Principal Investigator: Corey A Siegel, PhD,MD, Dartmouth-Hitchcock Medical Center

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
December 1, 2015

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 4, 2016

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 4, 2016

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
December 10, 2015

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 28, 2015

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
December 29, 2015

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
July 12, 2018

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 10, 2018

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2018

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 00029059

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

Yes

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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