NCT04509050Recruiting
Study to Evaluate Biological & Clinical Effects of Significantly Corrected CFTR Function in Infants & Young Children
A Prospective Study to Evaluate Biological and Clinical Effects of Significantly Corrected CFTR Function in Infants and Young Children (BEGIN Study)
Source: ClinicalTrials.gov · Last updated 8 Jul 2026
Brief summary (registry, in English)
This is a two-part, multi-center, prospective longitudinal, exploratory study of highly effective cystic fibrosis transmembrane conductance regulator (CFTR) modulators and their impact on children with cystic fibrosis (CF).
- Status (registry)
- Recruiting
- Study type
- Observational
- Enrollment
- 210 (estimated)
- First submitted
- 6 Aug 2020
- Start date
- 18 Nov 2020
- Primary completion date
- 31 Dec 2027
- Lead sponsor
- Sonya Heltshe
- Diseases
- Cystic fibrosis
- NCT number
- NCT04509050
What you commit to
- Study type: Observational
- Planned participants: 210
- From 18 Nov 2020 to the primary completion date, 31 Dec 2027
- 35 sites in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Use of an investigational drug within 28 days prior to and including the first study visit.
- Use of ivacaftor or elexacaftor/tezacaftor/ivacaftor within the 28 days prior to and including the first study visit.
- Use of chronic oral corticosteroids within the 28 days prior to and including the first study visit.
Other
- Part A and Part B:
Who the study is looking for
- Part A:
- Less than 10 years of age at the first study visit.
- Documentation of a CF diagnosis.
- Part B:
- Participated in Part A OR less than 7 years of age at the first study visit.
- Documentation of a CF diagnosis.
- CFTR mutations consistent with FDA labeled indication of highly effective modulator therapy (ivacaftor or elexacaftor/tezacaftor/ivacaftor).
- Physician intent to prescribe ivacaftor or elexacaftor/tezacaftor/ivacaftor.
Age in the registry: - to 10 years · Sex: All · Does not accept healthy volunteers
Sites (35)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| University of Michigan - Michigan Medicine Coordinator of this site? Confirm its status | Ann Arbor | United States | Recruiting |
| Children's Hospital Colorado Coordinator of this site? Confirm its status | Aurora | United States | Recruiting |
| The Children's Hospital Alabama & University of Alabama at Birmingham Coordinator of this site? Confirm its status | Birmingham | United States | Recruiting |
| Boston Children's Hospital Coordinator of this site? Confirm its status | Boston | United States | Recruiting |
| The Cystic Fibrosis Center of Western New York Coordinator of this site? Confirm its status | Buffalo | United States | Recruiting |
| Vermont Children's Hospital Coordinator of this site? Confirm its status | Burlington | United States | Recruiting |
| University of Virginia Coordinator of this site? Confirm its status | Charlottesville | United States | Recruiting |
| Cincinnati Children's Hospital Medical Center Coordinator of this site? Confirm its status | Cincinnati | United States | Recruiting |
| Nationwide Children's Hospital Coordinator of this site? Confirm its status | Columbus | United States | Recruiting |
| University of Texas Southwestern, Children's Health Coordinator of this site? Confirm its status | Dallas | United States | Recruiting |
| Cook Children's Medical Center Coordinator of this site? Confirm its status | Fort Worth | United States | Recruiting |
| Helen DeVos Children's Hospital Coordinator of this site? Confirm its status | Grand Rapids | United States | Recruiting |
| Hershey Medical Center Pennsylvania State University Coordinator of this site? Confirm its status | Hershey | United States | Recruiting |
| Baylor College of Medicine Coordinator of this site? Confirm its status | Houston | United States | Recruiting |
| Riley Hospital for Children Coordinator of this site? Confirm its status | Indianapolis | United States | Recruiting |
| University of Iowa Coordinator of this site? Confirm its status | Iowa City | United States | Recruiting |
| Nemours Children's Clinic Coordinator of this site? Confirm its status | Jacksonville | United States | Recruiting |
| Children's Mercy Kansas City Coordinator of this site? Confirm its status | Kansas City | United States | Recruiting |
| University of Kansas Medical Center Coordinator of this site? Confirm its status | Kansas City | United States | Recruiting |
| University of Wisconsin Coordinator of this site? Confirm its status | Madison | United States | Recruiting |
| University of Miami Coordinator of this site? Confirm its status | Miami | United States | Recruiting |
| Children's Hospitals and Clinics of Minnesota Coordinator of this site? Confirm its status | Minneapolis | United States | Recruiting |
| The Minnesota Cystic Fibrosis Center Coordinator of this site? Confirm its status | Minneapolis | United States | Recruiting |
| Children's Hospital of New York Coordinator of this site? Confirm its status | New York | United States | Recruiting |
| Oklahoma Cystic Fibrosis Center Coordinator of this site? Confirm its status | Oklahoma City | United States | Recruiting |
| The Nemours Children's Clinic - Orlando Coordinator of this site? Confirm its status | Orlando | United States | Recruiting |
| Stanford University Medical Center Coordinator of this site? Confirm its status | Palo Alto | United States | Recruiting |
| Children's Hospital of Philadelphia Coordinator of this site? Confirm its status | Philadelphia | United States | Recruiting |
| Children's Hospital of Pittsburgh of UPMC Coordinator of this site? Confirm its status | Pittsburgh | United States | Recruiting |
| Oregon Health Sciences University Coordinator of this site? Confirm its status | Portland | United States | Recruiting |
| Primary Children's Cystic Fibrosis Center Coordinator of this site? Confirm its status | Salt Lake City | United States | Recruiting |
| Seattle Children's Hospital Coordinator of this site? Confirm its status | Seattle | United States | Recruiting |
| St. Louis Children's Hospital Coordinator of this site? Confirm its status | St Louis | United States | Recruiting |
| SUNY Upstate Medical University Coordinator of this site? Confirm its status | Syracuse | United States | Recruiting |
| New York Medical College at Westchester Medical Center Coordinator of this site? Confirm its status | Valhalla | United States | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.