Study Evaluating the Long-term Safety and Efficacy of VX-445 Combination Therapy

Vertex Pharmaceuticals

Status and phase: Completed; Phase 3

Conditions: Cystic Fibrosis

Treatments: Drug: ELX/TEZ/IVA; Drug: IVA

Study type: Interventional

Funder types: Industry

Identifiers

NCT04058366

VX18-445-110

2019-000833-37 (EudraCT Number)

Details and patient eligibility

About

This study evaluated the long-term safety, efficacy, and pharmacodynamics of elexacaftor (ELX, VX-445) in triple combination (TC) with tezacaftor (TEZ) and ivacaftor (IVA) in subjects with cystic fibrosis (CF) who are heterozygous for the F508del mutation and a gating or residual function mutation (F/G and F/RF genotypes).

Enrollment: 251 patients

Sex: All

Ages: 12+ years old

Volunteers: No Healthy Volunteers

Inclusion and exclusion criteria

Key Inclusion Criteria:

• Completed study drug treatment in parent study (VX18-445-104); or had study drug interruption(s) in parent study but completed study visits up to the last scheduled visit of the Treatment Period in the parent study

Key Exclusion Criteria:

• History of study drug intolerance in parent study

Other protocol defined Inclusion/Exclusion criteria may apply.

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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251 participants in 1 patient group

ELX/TEZ/IVA

Experimental group

Description:

Part A: Participants received ELX (elexacaftor) 200 milligram (mg) once daily (qd)/TEZ 100 mg qd/IVA 150 mg every 12 hours (q12h) in the treatment period for 96 weeks. Part B: Participants from certain countries participated in Part B and continued to receive ELX 200 mg qd /TEZ 100 mg qd/IVA 150 mg q12h in the treatment period for 48 weeks.

Treatment:

Drug: IVA

Drug: ELX/TEZ/IVA