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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
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

Full criteria on ClinicalTrials.gov

Sites (35)

Sites in registry order. Pick your city on the disease page to sort them by distance.

SiteCityCountrySite status
University of Michigan - Michigan Medicine
Coordinator of this site? Confirm its status
Ann ArborUnited StatesRecruiting
Children's Hospital Colorado
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AuroraUnited StatesRecruiting
The Children's Hospital Alabama & University of Alabama at Birmingham
Coordinator of this site? Confirm its status
BirminghamUnited StatesRecruiting
Boston Children's Hospital
Coordinator of this site? Confirm its status
BostonUnited StatesRecruiting
The Cystic Fibrosis Center of Western New York
Coordinator of this site? Confirm its status
BuffaloUnited StatesRecruiting
Vermont Children's Hospital
Coordinator of this site? Confirm its status
BurlingtonUnited StatesRecruiting
University of Virginia
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CharlottesvilleUnited StatesRecruiting
Cincinnati Children's Hospital Medical Center
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CincinnatiUnited StatesRecruiting
Nationwide Children's Hospital
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ColumbusUnited StatesRecruiting
University of Texas Southwestern, Children's Health
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DallasUnited StatesRecruiting
Cook Children's Medical Center
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Fort WorthUnited StatesRecruiting
Helen DeVos Children's Hospital
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Grand RapidsUnited StatesRecruiting
Hershey Medical Center Pennsylvania State University
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HersheyUnited StatesRecruiting
Baylor College of Medicine
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HoustonUnited StatesRecruiting
Riley Hospital for Children
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IndianapolisUnited StatesRecruiting
University of Iowa
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Iowa CityUnited StatesRecruiting
Nemours Children's Clinic
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JacksonvilleUnited StatesRecruiting
Children's Mercy Kansas City
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Kansas CityUnited StatesRecruiting
University of Kansas Medical Center
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Kansas CityUnited StatesRecruiting
University of Wisconsin
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MadisonUnited StatesRecruiting
University of Miami
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MiamiUnited StatesRecruiting
Children's Hospitals and Clinics of Minnesota
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MinneapolisUnited StatesRecruiting
The Minnesota Cystic Fibrosis Center
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MinneapolisUnited StatesRecruiting
Children's Hospital of New York
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New YorkUnited StatesRecruiting
Oklahoma Cystic Fibrosis Center
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Oklahoma CityUnited StatesRecruiting
The Nemours Children's Clinic - Orlando
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OrlandoUnited StatesRecruiting
Stanford University Medical Center
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Palo AltoUnited StatesRecruiting
Children's Hospital of Philadelphia
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PhiladelphiaUnited StatesRecruiting
Children's Hospital of Pittsburgh of UPMC
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PittsburghUnited StatesRecruiting
Oregon Health Sciences University
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PortlandUnited StatesRecruiting
Primary Children's Cystic Fibrosis Center
Coordinator of this site? Confirm its status
Salt Lake CityUnited StatesRecruiting
Seattle Children's Hospital
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SeattleUnited StatesRecruiting
St. Louis Children's Hospital
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St LouisUnited StatesRecruiting
SUNY Upstate Medical University
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SyracuseUnited StatesRecruiting
New York Medical College at Westchester Medical Center
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ValhallaUnited StatesRecruiting

This page is information, not medical advice. Discuss any trial with your doctor.