Study on Long-term Safety of VX-121, Tezacaftor, and Deutivacaftor in Patients with Cystic Fibrosis

3 1 1 1

What is this study about?

This clinical trial is focused on studying Cystic Fibrosis, a genetic disorder that affects the lungs and other organs. The study will use a combination therapy involving three medications: Tezacaftor, Deutivacaftor, and Vanzacaftor, which are taken as a film-coated tablet. These medications are designed to work together to help improve the function of certain proteins in the body that are affected by cystic fibrosis.

The purpose of the study is to evaluate the long-term safety and tolerability of this combination therapy in individuals with cystic fibrosis. Participants will take the medication over a period of time and will have regular check-ups to monitor their health. These check-ups will include assessments of vital signs, laboratory tests, and other evaluations to ensure the treatment is safe and well-tolerated.

Throughout the study, researchers will also look at how the treatment affects lung function, measured by a test called percent predicted forced expiratory volume in 1 second (ppFEV1), and the level of sweat chloride, which is a marker of cystic fibrosis. Additionally, the study will track the number of lung infections, known as pulmonary exacerbations, that participants experience. This information will help determine the effectiveness of the treatment in managing cystic fibrosis symptoms over the long term.

1 joining the study

Upon joining the study, the participant will have signed an informed consent form. This indicates understanding and agreement to participate in the study.

The participant must be willing and able to comply with scheduled visits, treatment plans, study restrictions, laboratory tests, and other study procedures.

2 treatment regimen

The participant will receive a combination therapy consisting of tezacaftor, deutivacaftor, and vanzacaftor. These are active substances in the form of a film-coated tablet.

The medication is taken orally. The specific dosage and frequency will be determined by the study protocol and communicated to the participant by the study team.

3 monitoring and assessments

Throughout the study, the participant’s health will be monitored through various assessments. These include checking for any adverse events, conducting clinical laboratory tests, and measuring vital signs.

Additional assessments will include electrocardiograms (ECGs) and pulse oximetry to ensure the participant’s safety and the treatment’s tolerability.

4 evaluation of treatment effects

The study will evaluate the effects of the treatment on lung function, specifically the change in percent predicted forced expiratory volume in one second (ppFEV1).

Other evaluations include changes in sweat chloride levels and the number of pulmonary exacerbations experienced by the participant.

5 completion of study participation

The study is estimated to conclude by November 11, 2025. Participants are expected to remain on a stable cystic fibrosis treatment regimen throughout the study duration.

Upon completion, participants will have contributed valuable data regarding the long-term safety and efficacy of the VX-121 combination therapy.

Who Can Join the Study?

  • The patient or their legally authorized representative must sign and date an informed consent form. If needed, a form for minors, called an assent form, should also be signed.
  • The patient must be willing and able to attend scheduled visits, follow the treatment plan, adhere to study restrictions, undergo laboratory tests, follow contraceptive guidelines, and participate in other study procedures.
  • The patient must not have withdrawn consent from a previous related study, known as a parent study.
  • The patient must meet at least one of the following conditions:
    • Completed the study drug treatment in a parent study.
    • Had interruptions in the study drug during a parent study but did not permanently stop the study drug and completed all scheduled visits during the treatment period of the parent study.
  • The patient must be willing to continue their current treatment plan for Cystic Fibrosis until the end of their participation in the study.

Who Cannot Join the Study?

Where you can join this trial?

Verified and Recommended Sites

No sites found in this category

Verified Sites

Other Sites

Site Name City Country Status
Haga Hospital Hague The Netherlands
Centre Hospitalier Universitaire Rouen Rouen France
Hospital Foch Suresnes France
IRCCS Istituto Giannina Gaslini Genoa Italy
Azienda Ospedaliera Universitaria Meyer IRCCS Florence Italy
Universitair Ziekenhuis Gent Gent Belgium
Hospital Sant Joan De Deu Barcelona Esplugues De Llobregat Spain
Ruhrlandklinik Westdeutsches Lungenzentrum Am Universitaetsklinikum Essen gGmbH Essen Germany
Klinikum Ernst von Bergmann gGmbH Potsdam Germany
Hospital Universitario 12 De Octubre Madrid Spain
University Hospital Limerick Limerick Ireland
Geniko Nosokomeio Thessalonikis George Papanikolaou Thessaloniki Greece
Ippokratio General Hospital Of Thessaloniki Thessaloniki Greece
Virgen del Rocío University Hospital Sevilla Spain
Universitaetsklinikum Erlangen AöR Erlangen Germany
Fondazione IRCCS Ca Granda Ospedale Maggiore Policlinico Milan Italy
Azienda Ospedaliero-Universitaria San Luigi Gonzaga Orbassano Italy
Region Skane Skanes Universitetssjukhus Lund Sweden
Universitair Medisch Centrum Utrecht Utrecht The Netherlands
Universita’ Degli Studi Di Verona Verona Italy
Charite Universitaetsmedizin Berlin KöR Berlin Germany
Fakultni Nemocnice Brno Brno Czechia
Karolinska University Hospital Solna Sweden
Robert Debre University Hospital Paris France
University Clinical Hospital Virgen De La Arrixaca Murcia Spain
Centre Hospitalier Universitaire De Montpellier Montpellier France
Universita’ Politecnica Delle Marche Ancona Italy
Justus-Liebig-Universitaet Giessen Giessen Germany
Centre Hospitalier Universitaire De Nice Nice France
Tuedogyogyintezet Toeroekbalint Torokbalint Hungary
Rigshospitalet Copenhagen Denmark
Centro Hospitalar Universitario De Santo Antonio E.P.E. Porto Portugal
Institut fuer Klinische Transfusionsmedizin und Immungenetik Ulm gGmbH Ulm Germany
Centre Hospitalier Lyon Sud Pierre Benite France
Hopital Beaujon Clichy France
Vrije Universiteit Brussel Jette Belgium
Queen Silvia Childrens Hospital – Sahlgrenska University Hospital – Vaestra Goetalandsregionen Gothenburg Sweden
Children’s Health Ireland Dublin Ireland
Fondation Ildys Brest France
Uniklinikum Salzburg Salzburg Austria
Cwietpuzt Uazllaxexffnvp Suzcwmenw Woluwe-Saint-Lambert Belgium
Udtphfexgvclvjjttytsy Egynu Adp Essen Germany
Cmon Uqvbwehkpt Hdbolboe Cork Ireland
Szdmnrczlmg Zddwuy Pnkuphztbgn Zvxvmbbd Oapdeg Zppmxyildz Izh Dopndp Wgignule W Disisgifeyg Ljtddf Łomianki Poland
Sakuona Dofmcbaks Ptlvgxo Iva Mtrkzoj Peeynhxymtix W Gvzrgtc Sew z ofnn Gdansk Poland
Apvwmvm Ovoicrkrlag Rgmfglnsi Sor Cwoib Potenza Italy
Pxdn Tgyql Hdgplukp Ujnogdddwwqw Sabadell Spain
Furaifzh njyxlxmcj Mvvui a Hvdxfyn Prague Czechia
Agnuqwviq Uql Amsterdam The Netherlands
Hadpt Brrclm Hz Bergen Norway
Snqalhkib Rfwhiqc Uyftgngbji Mevjcyu Cfbnag Nijmegen The Netherlands
Moezpzl Uhwoihshem Od Gxev Graz Austria
Eauiosc Uiflsvjrtthq Mbnmbtk Cbxmuyo Rtiqohyjy (xboeoto Mqb Rotterdam The Netherlands
Asbqvi Uarwggyham Hrtebpgr Aarhus Denmark
Cgjfgn Hsjcicrrnan Rwjkjuko Umrgehdzfcpec Dk Thlsu Tours France
Gkirok Uyxpvwpohs Fmohzvrnp Frankfurt Germany
Uhbebiffxrqxlrvbqtjau Wcnyozrzi Asr Wuerzburg Germany
St Vsysiffjxnlirto Ujtpcczwmv Hymodhtp Dublin Ireland
Hycquhcc Vblg dtccktsn Barcelona Spain
Hpyanrix Uvcgunfdfmuehr Sjgigfstzl &bsfrtl Hqpmqqg db Heayccedlpf STRASBOURG, Alsace France

Want to learn more about this study or check if you can participate? Contact us.

Trial status

Country Status Recruitment Start
Austria Austria
Not recruiting
07.03.2023
Belgium Belgium
Not recruiting
07.03.2023
Czechia Czechia
Not recruiting
07.03.2023
Denmark Denmark
Not recruiting
07.03.2023
France France
Not recruiting
07.03.2023
Germany Germany
Not recruiting
07.03.2023
Greece Greece
Not recruiting
07.03.2023
Hungary Hungary
Not recruiting
07.03.2023
Ireland Ireland
Not recruiting
07.03.2023
Italy Italy
Not recruiting
07.03.2023
Norway Norway
Not recruiting
07.03.2023
Poland Poland
Not recruiting
07.03.2023
Portugal Portugal
Not recruiting
07.03.2023
Spain Spain
Not recruiting
07.03.2023
Sweden Sweden
Not recruiting
07.03.2023
The Netherlands The Netherlands
Not recruiting
07.03.2023

Trial locations

Investigated drugs:

VX-121 is a medication being studied for its potential to help people with cystic fibrosis. It is part of a combination therapy aimed at improving lung function and overall health in patients with this condition.

Tezacaftor is another component of the combination therapy. It works by helping certain proteins function better in the cells of people with cystic fibrosis, which can lead to improved lung function and fewer symptoms.

Deutivacaftor is the third part of the combination therapy. It is designed to enhance the activity of the proteins affected by cystic fibrosis, working together with VX-121 and tezacaftor to provide better health outcomes for patients.

Investigated diseases:

Cystic Fibrosis – Cystic fibrosis is a genetic disorder that affects the respiratory and digestive systems. It is caused by mutations in the CFTR gene, leading to the production of thick and sticky mucus. This mucus can clog the airways, causing breathing difficulties and frequent lung infections. Over time, the buildup of mucus can also affect the pancreas, hindering the digestion and absorption of nutrients. The disease progresses with recurring respiratory infections and can lead to lung damage. It is a lifelong condition that requires ongoing management to maintain quality of life.

Trial ID:
2024-514173-22-00
Protocol code:
VX20-121-104
Trial Phase:
Therapeutic confirmatory (Phase III)

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