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A Phase 3 Study to Evaluate the Efficacy and Safety of Ivacaftor and VX-661 in Combination With Ivacaftor in Subjects Aged 12 Years and Older With Cystic Fibrosis, Heterozygous for the F508del-cystic Fibrosis Transmembrane Conductance Regulator (CFTR) Mutation

Primary Purpose

Cystic Fibrosis

Status
Completed
Phase
Phase 3
Locations
International
Study Type
Interventional
Intervention
VX-661/Ivacaftor
Ivacaftor
Placebo matched to VX-661/ ivacaftor
Placebo matched to Ivacaftor
Sponsored by
Vertex Pharmaceuticals Incorporated
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Cystic Fibrosis

Eligibility Criteria

12 Years - undefined (Child, Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

  • Heterozygous for F508del-CFTR and a second allele with a CFTR mutation predicted to have residual function
  • Forced Expiratory Volume in 1 Second (FEV1) greater than or equal to (≥) 40 percent (%) and less than or equal to (≤) 90% of predicted normal for age, sex, and height during screening
  • Sweat chloride value ≥60 millimole per liter (mmol/L) during screening OR as documented in the participant's medical record
  • Stable CF disease as judged by the investigator

Exclusion Criteria:

  • History of any comorbidity that, in the opinion of the investigator, might confound the results of the study or pose an additional risk in administering study drug to the participant
  • An acute upper or lower respiratory infection, pulmonary exacerbation
  • History of solid organ or hematological transplantation
  • Ongoing or prior participation in an investigational drug study (including studies investigating VX-661, lumacaftor [VX-809], and/or ivacaftor) within 30 days of screening
  • Pregnant and nursing females
  • Sexually active participants of reproductive potential who are not willing to follow the contraception requirements

Sites / Locations

Arms of the Study

Arm 1

Arm 2

Arm 3

Arm Type

Experimental

Experimental

Placebo Comparator

Arm Label

VX-661/Ivacaftor combination

Ivacaftor monotherapy

Placebo

Arm Description

Outcomes

Primary Outcome Measures

Absolute Change From Study Baseline in Percent Predicted Forced Expiratory Volume in 1 Second (ppFEV1) at Average of Week 4 and Week 8
FEV1 is the volume of air that can forcibly be blown out in one second, after full inspiration.

Secondary Outcome Measures

Absolute Change From Study Baseline in Cystic Fibrosis Questionnaire-Revised (CFQ-R) Respiratory Domain Score at Average of Week 4 and Week 8
The CFQ-R assessed respiratory symptoms on a scale with scores ranging from 0 to 100; where higher scores indicated fewer symptoms and better health-related quality of life.
Number of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)
Relative Change From Study Baseline in ppFEV1 at Average of Week 4 and Week 8
FEV1 is the volume of air that can forcibly be blown out in one second, after full inspiration.
Absolute Change From Study Baseline in Sweat Chloride at Average of Week 4 and Week 8
Trough Plasma Concentrations (Ctrough) of VX-661, VX-661 Metabolites (M1 VX-661), IVA and IVA Metabolite (M1 IVA) After Administration of VX-661/IVA Combination Therapy
Ctrough of IVA and IVA Metabolite (M1 IVA) After Administration of IVA Monotherapy

Full Information

First Posted
March 12, 2015
Last Updated
May 8, 2018
Sponsor
Vertex Pharmaceuticals Incorporated
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1. Study Identification

Unique Protocol Identification Number
NCT02392234
Brief Title
A Phase 3 Study to Evaluate the Efficacy and Safety of Ivacaftor and VX-661 in Combination With Ivacaftor in Subjects Aged 12 Years and Older With Cystic Fibrosis, Heterozygous for the F508del-cystic Fibrosis Transmembrane Conductance Regulator (CFTR) Mutation
Official Title
A Phase 3, Randomized, Double-Blind, Placebo-Controlled, Crossover Study to Evaluate the Efficacy and Safety of Ivacaftor and VX-661 in Combination With Ivacaftor in Subjects Aged 12 Years and Older With Cystic Fibrosis, Heterozygous for the F508del-CFTR Mutation, and a Second Allele With a CFTR Mutation Predicted to Have Residual Function
Study Type
Interventional

2. Study Status

Record Verification Date
May 2018
Overall Recruitment Status
Completed
Study Start Date
March 2015 (undefined)
Primary Completion Date
February 2017 (Actual)
Study Completion Date
February 2017 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Vertex Pharmaceuticals Incorporated

4. Oversight

Data Monitoring Committee
Yes

5. Study Description

Brief Summary
The purpose of this study is to evaluate the efficacy and safety of VX-661 in combination with ivacaftor (IVA, VX-770) and IVA monotherapy in participants with Cystic Fibrosis (CF) who are heterozygous for F508del-CFTR allele and a second allele with a CFTR mutation predicted to have residual function.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Cystic Fibrosis

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 3
Interventional Study Model
Crossover Assignment
Masking
ParticipantCare ProviderInvestigator
Allocation
Randomized
Enrollment
248 (Actual)

8. Arms, Groups, and Interventions

Arm Title
VX-661/Ivacaftor combination
Arm Type
Experimental
Arm Title
Ivacaftor monotherapy
Arm Type
Experimental
Arm Title
Placebo
Arm Type
Placebo Comparator
Intervention Type
Drug
Intervention Name(s)
VX-661/Ivacaftor
Other Intervention Name(s)
VX-661+VX-770
Intervention Description
Fixed dose combination tablet, oral use
Intervention Type
Drug
Intervention Name(s)
Ivacaftor
Other Intervention Name(s)
IVA, VX-770
Intervention Description
Tablet, oral use
Intervention Type
Drug
Intervention Name(s)
Placebo matched to VX-661/ ivacaftor
Intervention Description
Fixed dose combination tablet, oral use
Intervention Type
Drug
Intervention Name(s)
Placebo matched to Ivacaftor
Intervention Description
Tablet, oral use
Primary Outcome Measure Information:
Title
Absolute Change From Study Baseline in Percent Predicted Forced Expiratory Volume in 1 Second (ppFEV1) at Average of Week 4 and Week 8
Description
FEV1 is the volume of air that can forcibly be blown out in one second, after full inspiration.
Time Frame
Baseline, Week 4 and Week 8 of each treatment period
Secondary Outcome Measure Information:
Title
Absolute Change From Study Baseline in Cystic Fibrosis Questionnaire-Revised (CFQ-R) Respiratory Domain Score at Average of Week 4 and Week 8
Description
The CFQ-R assessed respiratory symptoms on a scale with scores ranging from 0 to 100; where higher scores indicated fewer symptoms and better health-related quality of life.
Time Frame
Baseline, Week 4 and Week 8 of each treatment period
Title
Number of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)
Time Frame
Day 1 up to Week 28
Title
Relative Change From Study Baseline in ppFEV1 at Average of Week 4 and Week 8
Description
FEV1 is the volume of air that can forcibly be blown out in one second, after full inspiration.
Time Frame
Baseline, Week 4 and Week 8 of each treatment period
Title
Absolute Change From Study Baseline in Sweat Chloride at Average of Week 4 and Week 8
Time Frame
Baseline, Week 4 and Week 8 of each treatment period
Title
Trough Plasma Concentrations (Ctrough) of VX-661, VX-661 Metabolites (M1 VX-661), IVA and IVA Metabolite (M1 IVA) After Administration of VX-661/IVA Combination Therapy
Time Frame
Pre-morning dose on Week 8 of each treatment period
Title
Ctrough of IVA and IVA Metabolite (M1 IVA) After Administration of IVA Monotherapy
Time Frame
Pre-morning dose on Week 8 of each treatment period

10. Eligibility

Sex
All
Minimum Age & Unit of Time
12 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: Heterozygous for F508del-CFTR and a second allele with a CFTR mutation predicted to have residual function Forced Expiratory Volume in 1 Second (FEV1) greater than or equal to (≥) 40 percent (%) and less than or equal to (≤) 90% of predicted normal for age, sex, and height during screening Sweat chloride value ≥60 millimole per liter (mmol/L) during screening OR as documented in the participant's medical record Stable CF disease as judged by the investigator Exclusion Criteria: History of any comorbidity that, in the opinion of the investigator, might confound the results of the study or pose an additional risk in administering study drug to the participant An acute upper or lower respiratory infection, pulmonary exacerbation History of solid organ or hematological transplantation Ongoing or prior participation in an investigational drug study (including studies investigating VX-661, lumacaftor [VX-809], and/or ivacaftor) within 30 days of screening Pregnant and nursing females Sexually active participants of reproductive potential who are not willing to follow the contraception requirements
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12. IPD Sharing Statement

Citations:
PubMed Identifier
33331662
Citation
Southern KW, Murphy J, Sinha IP, Nevitt SJ. Corrector therapies (with or without potentiators) for people with cystic fibrosis with class II CFTR gene variants (most commonly F508del). Cochrane Database Syst Rev. 2020 Dec 17;12(12):CD010966. doi: 10.1002/14651858.CD010966.pub3.
Results Reference
derived
PubMed Identifier
29099333
Citation
Rowe SM, Daines C, Ringshausen FC, Kerem E, Wilson J, Tullis E, Nair N, Simard C, Han L, Ingenito EP, McKee C, Lekstrom-Himes J, Davies JC. Tezacaftor-Ivacaftor in Residual-Function Heterozygotes with Cystic Fibrosis. N Engl J Med. 2017 Nov 23;377(21):2024-2035. doi: 10.1056/NEJMoa1709847. Epub 2017 Nov 3.
Results Reference
derived

Learn more about this trial

A Phase 3 Study to Evaluate the Efficacy and Safety of Ivacaftor and VX-661 in Combination With Ivacaftor in Subjects Aged 12 Years and Older With Cystic Fibrosis, Heterozygous for the F508del-cystic Fibrosis Transmembrane Conductance Regulator (CFTR) Mutation

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