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A Clinical Trial to Evaluate Prophylactic Emicizumab Versus no Prophylaxis in Hemophilia A Participants Without Inhibitors

NCT02847637 · Status: COMPLETED · Phase: PHASE3 · Type: INTERVENTIONAL · Enrollment: 152

Last updated 2022-11-16

Study results available
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Summary

This is a randomized, global, multicenter, open-label, Phase 3 clinical study in participants with severe hemophilia A without inhibitors against Factor VIII (FVIII) who are 12 years or older. The study evaluates two prophylactic emicizumab regimens versus no prophylaxis in this population with emphasis on efficacy, safety, and pharmacokinetics.

Conditions

Interventions

DRUG

Emicizumab

Participants received emicizumab prophylaxis subcutaneously at the specified dose for each arm. After at least 24 weeks on prophylactic emicizumab, individuals who experienced suboptimal bleeding control on emicizumab (according to protocol-defined criteria) had the opportunity to increase their dose to 3 mg/kg weekly. Upon implementation of protocol version 4 (20-Dec-2019), treatment duration was extended. During this study prolongation, each participant had the option to choose a preferred emicizumab dosing regimen among those permitted (i.e., emicizumab 1.5 mg/kg once every week \[QW\], 3 mg/kg once every 2 weeks \[Q2W\], or 6 mg/kg once every 4 weeks \[Q4W\]) and continue on that dosing regimen until discontinuation from the study.

DRUG

Factor VIII (FVIII)

FVIII was allowed to treat bleeds on an episodic basis, per the local prescribing information. Specific dosages of FVIII were not mandated in the study. Breakthrough bleeds were to be treated with the lowest FVIII dose expected to achieve hemostasis, which may have been lower than the participant's prior FVIII dose. To avoid bleeds before adequate emicizumab level is reached, patients in Arm D continued their regular FVIII prophylaxis until the second emicizumab loading dose. Concomitant routine FVIII prophylaxis was not permissible otherwise during the study.

Sponsors & Collaborators

Principal Investigators

  • Clinical Trials · Hoffmann-La Roche

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
12 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2016-09-27
Primary Completion
2017-09-15
Completion
2022-05-12
FDA Drug
Yes

Countries

  • United States
  • Australia
  • Costa Rica
  • France
  • Germany
  • Ireland
  • Italy
  • Japan
  • Poland
  • South Africa
  • South Korea
  • Spain
  • Taiwan
  • United Kingdom

Study Locations

More Related Trials

Entities

Diseases
Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02847637 on ClinicalTrials.gov