A Study to Evaluate ELX/TEZ/IVA on Cough and Physical Activity in Subjects With Cystic Fibrosis (CF)
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ClinicalTrials.gov Identifier: NCT04969224 |
Recruitment Status :
Active, not recruiting
First Posted : July 20, 2021
Last Update Posted : June 2, 2022
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Condition or disease | Intervention/treatment | Phase |
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Cystic Fibrosis | Drug: ELX/TEZ/IVA Drug: IVA | Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 82 participants |
Allocation: | N/A |
Intervention Model: | Single Group Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | A Phase 3b Open-label Study Evaluating the Effects of Elexacaftor/Tezacaftor/Ivacaftor on Cough and Physical Activity in Cystic Fibrosis Subjects 12 Years of Age and Older Who Are Heterozygous for the F508del Mutation and a Minimal Function Mutation (F/MF) |
Actual Study Start Date : | October 12, 2021 |
Estimated Primary Completion Date : | August 2022 |
Estimated Study Completion Date : | September 2022 |

Arm | Intervention/treatment |
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Experimental: ELX/TEZ/IVA
Participants will receive ELX/TEZ/IVA fixed-dose combination (FDC) in the morning and IVA in the evening.
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Drug: ELX/TEZ/IVA
FDC tablet for oral administration.
Other Names:
Drug: IVA Tablet for oral administration.
Other Names:
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- Percent Reduction From Baseline in Cough Frequency (cough events per day) to the Average of Week 8 Through Week 12 [ Time Frame: Baseline up to Week 12 ]
- Absolute Change From Baseline in Total Step Count per day to the Average of Week 8 Through Week 12 [ Time Frame: Baseline up to Week 12 ]

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Ages Eligible for Study: | 12 Years and older (Child, Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Key Inclusion Criteria:
- Forced expiratory volume in 1 second (FEV1) value ≥30% and ≤90% predicted
- Heterozygous for CF transmembrane conductance regulator gene (CFTR) F508del mutation and a minimal function mutation (F/MF genotypes)
Key Exclusion Criteria:
- Clinically significant liver cirrhosis
- Solid organ or hematological transplantation
- Non-ambulatory status
- Lung infection with organisms associated with a more rapid decline in pulmonary status
Other protocol defined Inclusion/Exclusion criteria may apply

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04969224

Responsible Party: | Vertex Pharmaceuticals Incorporated |
ClinicalTrials.gov Identifier: | NCT04969224 |
Other Study ID Numbers: |
VX20-445-126 2021-001628-16 ( EudraCT Number ) |
First Posted: | July 20, 2021 Key Record Dates |
Last Update Posted: | June 2, 2022 |
Last Verified: | June 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Plan Description: | Details on Vertex data sharing criteria and process for requesting access can be found at: https://www.vrtx.com/independent-research/clinical-trial-data-sharing |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Product Manufactured in and Exported from the U.S.: | Yes |
Cystic Fibrosis Fibrosis Pathologic Processes Pancreatic Diseases Digestive System Diseases Lung Diseases Respiratory Tract Diseases |
Genetic Diseases, Inborn Infant, Newborn, Diseases Ivacaftor Elexacaftor Chloride Channel Agonists Membrane Transport Modulators Molecular Mechanisms of Pharmacological Action |