Effect of Lumacaftor/Ivacaftor in Children With Cystic Fibrosis Homozygote for F508del on Small Airway Function (ROOTS)

November 28, 2023 updated by: A.M. Zwitserloot, University Medical Center Groningen

Real World Data of the Effect of Lumacaftor/Ivacaftor Therapy in Children With Cystic Fibrosis Homozygote for F508del on Small Airway Function

To obtain prospective real world data of the effect of lumacaftor/ivacaftor or tezacaftor/ ivacaftor on small airway disease in children aged 6-18 years with cystic fibrosis (CF) homozygous for F508del. The effect of the medication on small airway disease is evaluated by measurement of multiple breath washout (MBW) with its outcome parameter lung clearance index (LCI) and the Perth-Rotterdam Annotated Grid Morphometric Analysis for CF (PRAGMA-CF) cpmputed tomography (CT) score. In addition the relation between changes in LCI and PRAGMA-CF score is evaluated.

Study Overview

Status

Status

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

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.

Detailed Description

Multi-center observational study. Duration 12 months after the start of lumacaftor/ ivacaftor or tezacaftor/ ivacaftor .

To collect these data and to assist in clinical decisions regarding initiation and continuation of lumacaftor/ivacaftor or tezacaftor/ ivacaftor, the investigators of the CF center (Beatrix Children's Hospital, University Medical Center Groningen (UMCG), the Netherlands) developed an extensive protocol of testing before children aged 6-18 years start therapy and during the first year after start.

The protocol includes the following tests: growth parameters, sweat test, lung function testing (spirometry, MBW, body plethysmography), blood test panel (AST, ALT, alkalic phosphatase (AF), total and direct bilirubin, LDH), fecal elastase, high resolution (HR)CT and CF quality of life questionnaires. These tests are repeated at regular intervals.

Multi-center observational study. Duration 12 months after the start of lumacaftor/ ivacaftor or tezacaftor/ ivacaftor .

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.
30

Contacts and Locations

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

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • Germany
      • Düsseldorf, Germany
        • Children's Hospital Marien Hospital Wesel
  • Netherlands
      • Groningen, Netherlands
        • Beatrix Children's Hospital, University Medical Center Groningen

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

6 years to 18 years (Child, Adult)

Accepts Healthy Volunteers

N/A

Sampling Method

Probability Sample

Study Population

Patients are included from the Beatrix Children's Hospital, UMCG, the Netherlands and the Marien Hospital Wesel, Germany

Description

Inclusion Criteria:

  • Children aged 6-18 years
  • CF, Homozygote F508del confirmed by DNA analysis
  • Considered for start of lumacaftor/ ivacaftor or tezacaftor/ivacaftor

Exclusion Criteria:

  • - Unable to perform acceptable, repeatable lung function tests

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

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.
CF patients aged 6-18 years homozygeous for delta F508
CF patients aged 6-18 years homozygeous for delta F508 starting with lumacaftor/ ivacaftor or tezacaftor/ ivacaftor

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
Change in lung clearance index
Time Frame: 12 months
Change between t=0 and t=12
12 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Change in PRAGMA-CF score
Time Frame: 12 months
Change between t=0 and t=12
12 months

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
percent predicted forced expiratory volume in 1 second
Time Frame: 12 months
t= 0 and t-=12
12 months
percent predicted forced vital capacity measured by spirometry
Time Frame: 12 months
Change between t=0 and t=12
12 months
Residual volume measured by blodypethysmography
Time Frame: 12 months
Change between t=0 and t=12
12 months
Residual volume/ total lung capacity measured by blodypethysmography
Time Frame: 12 months
Change between t=0 and t=12
12 months
Mid upper arm circumference in SDS
Time Frame: 12 months
Change between t=0 and t=12
12 months
Weight SDS
Time Frame: 12 months
Change between t=0 and t=12
12 months
Sweat chloride level
Time Frame: 12 months
Change between t=0 and t=12
12 months
CF questionnaire revised respiratory domain
Time Frame: 12 months
Change between t=0 and t=12, scale 0-100
12 months

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.
University Medical Center Groningen

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.
Vertex Pharmaceuticals Incorporated
Marien Hospital Wesel

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.
November 1, 2017

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.
July 19, 2022

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.
July 19, 2022

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).
September 18, 2019

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.
October 23, 2019

First Posted (Actual)

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.
October 24, 2019

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.
November 29, 2023

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.
November 28, 2023

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.
November 1, 2023

More Information

Terms related to this study

Keywords

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.
  • 201900032

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

No plans to share IPD

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

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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