Evaluation of VX 445/TEZ/IVA in Cystic Fibrosis Subjects 6 Through 11 Years of Age

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

NCT03691779

2018-001695-38 (EudraCT Number)

VX18-445-106

Details and patient eligibility

About

This study will evaluate the pharmacokinetics (PK), safety, tolerability, efficacy, and pharmacodynamic effect of VX-445, tezacaftor (TEZ), and ivacaftor (IVA) when dosed in triple combination (TC) in Cystic Fibrosis (CF) subjects 6 through 11 years of age with F/F and F/MF genotypes.

Enrollment: 71 patients

Sex: All

Ages: 6 to 11 years old

Volunteers: No Healthy Volunteers

Inclusion and exclusion criteria

Key Inclusion Criteria:

• Homozygous or heterozygous for F508del mutation (F/F or F/MF genotypes)
• Forced expiratory volume in 1 second (FEV1) value ≥40% of predicted mean for age, sex, and height.

Key Exclusion Criteria:

• Clinically significant cirrhosis with or without portal hypertension
• Lung infection with organisms associated with a more rapid decline in pulmonary status.
• Solid organ or hematological transplantation.

Other protocol defined Inclusion/Exclusion criteria may apply.

Trial design

Primary purpose: Treatment

Allocation: Non-Randomized

Interventional model: Sequential Assignment

Masking: None (Open label)

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71 participants in 2 patient groups

Part A: ELX/TEZ/IVA

Experimental group

Description:

Participants in Part A received ELX 100 milligrams (mg) once daily (qd)/TEZ 50 mg qd/IVA 75 mg every 12 hours (q12h) in the treatment period for 15 days.

Treatment:

Drug: IVA

Drug: ELX/TEZ/IVA

Part B: ELX/TEZ/IVA

Experimental group

Description:

Participants in Part B weighing less than (\<) 30 kilograms (kg) at Day 1 received ELX 100 mg qd/TEZ 50 mg qd/IVA 75 mg q12h and participants weighing greater than equals to (\>=) 30 kg at Day 1 received ELX 200 mg qd/TEZ 100 mg qd/IVA 150 mg q12h in the treatment period for 24 weeks.

Treatment:

Drug: IVA

Drug: ELX/TEZ/IVA