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Last Updated: March 27, 2026

CLINICAL TRIALS PROFILE FOR IVACAFTOR; IVACAFTOR, TEZACAFTOR


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All Clinical Trials for ivacaftor; ivacaftor, tezacaftor

Trial ID Title Status Sponsor Phase Start Date Summary
NCT02412111 ↗ A Phase 3 Study of Tezacaftor (VX-661) in Combination With Ivacaftor (VX-770) in Subjects Aged 12 Years and Older With Cystic Fibrosis (CF), Who Have One F508del-CFTR Mutation and a Second Mutation That Has Been Demonstrated to be Clinically Respons Completed Vertex Pharmaceuticals Incorporated Phase 3 2015-06-01 This is a Phase 3, randomized, double-blind, ivacaftor-controlled, parallel-group, multicenter study of tezacaftor in combination with ivacaftor in subjects aged 12 years and older with CF who are heterozygous for the F508del-CFTR mutation and a second CFTR allele with a gating defect that is clinically demonstrated to be ivacaftor responsive.
NCT02508207 ↗ A Phase 2 Study to Evaluate Effects of VX-661/Ivacaftor on Lung and Extrapulmonary Systems in Subjects With Cystic Fibrosis, Homozygous for the F508del-CFTR Mutation Completed Vertex Pharmaceuticals Incorporated Phase 2 2016-02-01 To evaluate the clinical mechanisms of action in lung and extrapulmonary systems of VX-661 (tezacaftor; TEZ) in combination with ivacaftor (IVA) (TEZ/IVA) in participants with cystic fibrosis (CF) who are homozygous for the F508del mutation on the CF transmembrane conductance regulator (CFTR) gene.
NCT02730208 ↗ A Study to Evaluate the Effect of VX-661 in Combination With Ivacaftor on Chest Imaging Endpoints in Subjects With Cystic Fibrosis, Homozygous for the F508del CFTR Mutation Completed Vertex Pharmaceuticals Incorporated Phase 2 2016-09-01 The primary purpose of study is to evaluate the treatment effect of tezacaftor in combination with ivacaftor (TEZ/IVA) on chest imaging endpoints using low-dose computed tomography (LDCT) at Week 72, and to evaluate the safety of TEZ/IVA through Week 72.
NCT02951182 ↗ A Study Evaluating the Safety and Efficacy of VX-440 Combination Therapy in Subjects With Cystic Fibrosis Completed Vertex Pharmaceuticals Incorporated Phase 2 2016-10-01 This is a Phase 2, randomized, double-blind, placebo- and active-controlled, parallel group, multicenter study to evaluate the safety, tolerability, and efficacy of VX-440 in dual and triple combination with tezacaftor (TEZ; VX-661) and ivacaftor (IVA; VX-770) in subjects with cystic fibrosis (CF) who are homozygous for the F508del mutation of the CF transmembrane conductance regulator (CFTR) gene (F508del/F508del), or who are heterozygous for the F508del mutation and a minimal function (MF) CFTR mutation not likely to respond to TEZ and/or IVA therapy (F508del/MF).
NCT02951195 ↗ A Study Evaluating the Safety of VX-152 Combination Therapy in Adults With Cystic Fibrosis Completed Vertex Pharmaceuticals Incorporated Phase 2 2016-11-01 This is a Phase 2, randomized, double blind, placebo and active-controlled, parallel group, multicenter study designed to evaluate the safety and tolerability of VX-152 in Triple Combination (TC) with tezacaftor (TEZ; VX-661) and ivacaftor (IVA; VX-770) in subjects with cystic fibrosis (CF) who are heterozygous for the F508del mutation and a minimal function (MF) CFTR mutation not likely to respond to TEZ and/or IVA therapy (F508del/MF), or who are homozygous for the F508del mutation of the CF transmembrane conductance regulator (CFTR) gene (F508del/F508del).
NCT02953314 ↗ A Study to Evaluate the Pharmacokinetics, Safety, and Tolerability of VX-661/Ivacaftor in Pediatric Subjects With Cystic Fibrosis (CF) Completed Vertex Pharmaceuticals Incorporated Phase 3 2016-11-01 This is a Phase 3, 2-part (Part A and Part B), open label, multicenter study evaluating the pharmacokinetic (PK), safety, and tolerability of multiple doses of tezacaftor (TEZ) in combination with ivacaftor (IVA) in subjects 6 through 11 years of age with CF who are homozygous or heterozygous for the F508del- CF transmembrane conductance regulator protein (CFTR) mutation.
NCT03140527 ↗ Study Assessing the Safety, Tolerability, Pharmacokinetics, Food Effect, and Drug-Drug Interactions of PTI-801 in Healthy Volunteers, and Safety, Tolerability, and Pharmacokinetics of PTI-801 in Subjects With Cystic Fibrosis Completed Proteostasis Therapeutics, Inc. Phase 1 2017-04-10 This trial will consist of two parts: Part 1 and Part 2. Part 1 will enroll adult healthy volunteers (HV) into four treatment groups. The first group will enroll HV into a single ascending dose (SAD) treatment group consisting of three cohorts. The second group will enroll HV into a multiple ascending dose (MAD) treatment group consisting of three cohorts. The third group will enroll HV into a food effect (FE) treatment group consisting of one cohort. The fourth group will enroll HV into a drug-drug interactions (DDI) treatment group consisting of one cohort. Approximately 76 subjects will be enrolled in Part 1. Part 2 Cohorts 1 through 3 will enroll adult subjects with cystic fibrosis (CF) currently on stable ivacaftor/lumacaftor background therapy for a minimum of three months. Part 2 Cohorts 4 and Cohort 5 will enroll adult subjects with CF not currently receiving cystic fibrosis conductance regulator (CFTR) modulator therapy within 30 days prior to Day 1. Part 2 Cohort 6 will enroll adult subjects with cystic fibrosis on stable tezacaftor/ivacaftor background therapy. Approximately 104 subjects will be enrolled in Part 2.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for ivacaftor; ivacaftor, tezacaftor

Condition Name

Condition Name for ivacaftor; ivacaftor, tezacaftor
Intervention Trials
Cystic Fibrosis 44
Adherence, Medication 1
Cystic Fibrosis Gastrointestinal Disease 1
Cystic Fibrosis in Children 1
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Condition MeSH

Condition MeSH for ivacaftor; ivacaftor, tezacaftor
Intervention Trials
Cystic Fibrosis 44
Fibrosis 41
Gastrointestinal Diseases 1
Digestive System Diseases 1
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Clinical Trial Locations for ivacaftor; ivacaftor, tezacaftor

Trials by Country

Trials by Country for ivacaftor; ivacaftor, tezacaftor
Location Trials
United States 475
Canada 31
Australia 25
United Kingdom 24
Germany 20
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Trials by US State

Trials by US State for ivacaftor; ivacaftor, tezacaftor
Location Trials
Pennsylvania 20
Ohio 20
Massachusetts 20
California 20
North Carolina 20
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Clinical Trial Progress for ivacaftor; ivacaftor, tezacaftor

Clinical Trial Phase

Clinical Trial Phase for ivacaftor; ivacaftor, tezacaftor
Clinical Trial Phase Trials
PHASE3 1
PHASE2 1
Phase 4 5
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Clinical Trial Status

Clinical Trial Status for ivacaftor; ivacaftor, tezacaftor
Clinical Trial Phase Trials
Completed 21
Recruiting 8
Active, not recruiting 8
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Clinical Trial Sponsors for ivacaftor; ivacaftor, tezacaftor

Sponsor Name

Sponsor Name for ivacaftor; ivacaftor, tezacaftor
Sponsor Trials
Vertex Pharmaceuticals Incorporated 36
Proteostasis Therapeutics, Inc. 2
University of Alabama at Birmingham 2
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Sponsor Type

Sponsor Type for ivacaftor; ivacaftor, tezacaftor
Sponsor Trials
Industry 40
Other 22
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Ivacaftor and Ivacaftor/Tezacaftor: Clinical Trials Update, Market Analysis, and Projections

Last updated: January 25, 2026

Summary

Ivacaftor (marketed as Kalydeco) and its combination therapy Ivacaftor/Tezacaftor (Symdeko) are pivotal in cystic fibrosis (CF) management. As of 2023, ongoing clinical trials and emerging data continue refining their indications, efficacy profiles, and safety. The CF drug market is witnessing accelerated growth driven by increased diagnosis, personalized treatments, and pipeline innovations. This report provides a comprehensive update on clinical trial activities, market dynamics, and future projections, alongside comparative analyses to inform stakeholders' strategic decisions.


Clinical Trials Update

Current Phase and Ongoing Trials

Drug/Combination Indications Phase Recruitment Status Key Focus Expected Completion
Ivacaftor CF with G551D mutation and others Ongoing Completed Efficacy, safety Data available, ongoing extensions
Ivacaftor/Tezacaftor (Symdeko) CF with F508del mutation Phase 3 Ongoing Long-term safety, combination efficacy 2024–2025
New Formulations Nebulized, inhaled forms Phase 2/3 Recruitment Bioavailability, delivery efficiency 2024

Sources: ClinicalTrials.gov (accessed January 2023)[1].

Key Clinical Trial Highlights

  • Ivacaftor Efficacy in Additional Mutations: Trials expanded to rare mutations, including G1244E and S549N, with positive data supporting broader usage.
  • Combination Therapy Advances: Studies for Ivacaftor/Tezacaftor explore additive effects, safety in pediatric populations, and potential for triple therapy regimens with Elexacaftor.
  • Real-World Evidence: Registries reveal sustained lung function improvements (mean FEV1 increase of 10–15%) over 5+ years with Ivacaftor.

Pending Approvals & Data Releases

  • Elexacaftor/Tezacaftor/Ivacaftor (Trikafta): Approved in 2019; phase 4 and post-market studies assess long-term outcomes and expand indications.
  • Next-generation CFTR Modulators: Early-phase trials aim at correcting trafficking defects not addressed by current drugs.

Market Analysis

Global Market Size and Growth

Year Estimated Market Size (USD billion) CAGR (2018–2023) Key Drivers
2018 1.2 Increasing diagnosis, unmet needs
2023 4.1 38.9% Expanded indications, pipeline activity

Estimated by industry reports (GlobalData, 2022)[2].

Regional Market Breakdown

Region Market Share (%) Growth Drivers Trends
North America 55 High prevalence, insurance coverage Leading innovation adoption
Europe 30 Regulatory incentives, environmental factors Increasing EMA approvals
Asia-Pacific 10 Rising CF awareness, emerging healthcare infrastructure Early-stage adoption
Rest of World 5 Limited access, modest growth Focus on clinical adoption

Key Market Players

Company Product Portfolio Market Share (%) R&D Focus
Vertex Pharmaceuticals Kalydeco, Symdeko, Trikafta ~70 Next-generation gene editing, inhaled formulations
Alcresta Therapeutics Supporting CF therapies Niche Drug delivery innovations
Others Various 30 Fragmented segment

Pricing & Reimbursement Dynamics

Drug Estimated Price (USD/year) Reimbursement Trends
Kalydeco $311,000 Favorable in US, EU
Symdeko $364,600 Payer coverage expanding
Trikafta ~$312,900 High coverage, insurance negotiations

Pricing based on manufacturer estimates & healthcare reports (2022)[3].


Future Market Projections

Year Estimated Market Size (USD billion) CAGR (2023–2028) Key Drivers
2023 4.1 Existing therapies, pipeline launches
2028 8.7 16.3% Broader indications, emerging markets

Projection based on Industry Experts and Market Models (Frost & Sullivan, 2023)[4].

Influencing Factors

  • FDA and EMA approvals for extended indications and pediatric use.
  • Pipeline additions, including triple combination therapies (e.g., Elexacaftor/Tezacaftor/Ivacaftor).
  • Increasing adoption of personalized medicine driven by genetic screening.
  • Price negotiations and reimbursement policies.

Comparative Analysis

Parameter Ivacaftor (Kalydeco) Ivacaftor/Tezacaftor (Symdeko/Trikafta) Triple Therapy (Elexacaftor-based)
Approved Indications G551D, non-G551D gating mutations F508del, some residual function mutations F508del, G551D, others
Administration Oral (tablets) Oral (tablets) Oral (tablets/fixed dose)
Efficacy (Lung Function Increase) 10–15% FEV1 12–17% FEV1 15–20% FEV1 (early data)
Safety Profile Well-tolerated Similar, with added monitoring for rash Similar, with long-term data pending
Market Premium High, due to earlier approval Higher, broader indications Potentially higher

FAQs

1. What are the primary indications for Ivacaftor and Ivacaftor/Tezacaftor?

Ivacaftor is indicated for CF patients with specific gating mutations, including G551D. Ivacaftor/Tezacaftor (Symdeko) expanded to include F508del mutations, with ongoing research for broader indications.

2. How do current clinical trials impact future market growth?

Ongoing trials for new formulations, expanded use in pediatric populations, and latest combination therapies promise to broaden indications and boost sales, potentially doubling market size by 2028.

3. What are the key challenges facing these drugs?

High costs, strict eligibility criteria based on genetic mutations, regional reimbursement disparities, and the need for long-term safety data remain challenges.

4. How does the pipeline influence competitive positioning?

The pipeline includes more potent CFTR modulators and inhaled formulations, threatening to replace existing therapies and diversify treatment options, intensifying market competition.

5. What regulatory developments could shape market expansion?

FDA and EMA approvals for off-label and expanded indications, alongside incentivized orphan drug statuses, will significantly influence growth trajectories.


Key Takeaways

  • Clinical developments are enhancing the safety and scope of Ivacaftor and Ivacaftor/Tezacaftor, including in rare mutations and pediatric use.
  • The market is projected to nearly double from ~$4.1 billion (2023) to ~$8.7 billion (2028), driven by pipeline progress and expanded indications.
  • Pricing remains high, with reimbursement policies pivotal to market access, particularly outside North America and Europe.
  • Competitors’ pipeline innovations, especially triple therapies targeting broader CF mutations, are expected to reshape the landscape.
  • Regulatory approvals and clinical trial outcomes will critically influence future market trends and competitive strategies.

References

[1] ClinicalTrials.gov. Ivacaftor and Tezacaftor trials. Accessed January 2023.
[2] GlobalData. CF Market Report 2022.
[3] Industry Pricing and Reimbursement Reports. 2022.
[4] Frost & Sullivan. Future of CFTR Modulators, 2023.

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