Efficacy and Safety of ALX-0171 in Adult Hematopoietic Stem Cell Transplant (HSCT) Recipients Who Present With Respiratory Syncytial Virus (RSV) Infection

NCT ID: NCT03468829

Last Updated: 2019-03-11

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

WITHDRAWN

Clinical Phase

PHASE2

Study Classification

INTERVENTIONAL

Study Start Date

2019-02-28

Study Completion Date

2020-05-31

Brief Summary

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The primary objective of the study is to evaluate the antiviral effect and safety of inhaled ALX-0171 in adults diagnosed with respiratory syncytial virus (RSV) respiratory tract infection after hematopoietic stem cell transplantation (HSCT).

The secondary objective is to assess the clinical activity, pharmacokinetics (PK), virology, and immunogenicity of inhaled ALX 0171 in adults diagnosed with RSV respiratory tract infection after HSCT.

Detailed Description

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Conditions

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Respiratory Syncytial Virus Lower Respiratory Tract Infection

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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ALX-0171 Dose 1

Group Type EXPERIMENTAL

ALX-0171 Dose 1

Intervention Type BIOLOGICAL

Oral inhalation of ALX-0171 Dose 1 once daily for a maximum of 14 days

ALX-0171 Dose 2

Group Type EXPERIMENTAL

ALX-0171 Dose 2

Intervention Type BIOLOGICAL

Oral inhalation of ALX-0171 Dose 2 once daily for a maximum of 14 days

Placebo

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type BIOLOGICAL

Oral inhalation of Placebo once daily for a maximum of 14 days

Interventions

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ALX-0171 Dose 1

Oral inhalation of ALX-0171 Dose 1 once daily for a maximum of 14 days

Intervention Type BIOLOGICAL

ALX-0171 Dose 2

Oral inhalation of ALX-0171 Dose 2 once daily for a maximum of 14 days

Intervention Type BIOLOGICAL

Placebo

Oral inhalation of Placebo once daily for a maximum of 14 days

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

1. Subject has received an HSCT using any conditioning regimen and for any underlying etiology (i.e., subject has received an autologous or allogeneic HSCT)
2. Subject is clinically diagnosed with RSV infection with new onset or acute worsening
3. Symptoms likely related to RSV infection have appeared within 5 days of screening and their severity requires initial or maintained hospitalization.
4. Documented RSV infection in the upper respiratory tract (URT)
5. Subject has:

* Diagnosis of RSV lower respiratory tract (LRT) disease or
* Diagnosis of RSV URT disease with high risk of progression to lower respiratory tract infection (LRTI)

Others as defined in the protocol

Exclusion Criteria

1. Subject has clinically significant bacteremia or fungemia within 7 days of screening
2. Subject has clinically significant bacterial, fungal or viral pneumonia
3. Subject presents evidence of shock requiring intensive care unit (ICU) monitoring and/or vasopressor treatment
4. Subject requires or is expected to require invasive mechanical ventilation or intensive non-invasive respiratory support. Standard oxygen supplementation up to 6 L/minute is permitted provided it can be interrupted for the duration of study drug administration.

Others as defined in the protocol
Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Ablynx, a Sanofi company

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Ablynx Clinical Department

Role: STUDY_DIRECTOR

Ablynx, a Sanofi company

Locations

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Investigator site

Darlinghurst, , Australia

Site Status

Investigator site

Westmead, , Australia

Site Status

Investigator site

Leuven, , Belgium

Site Status

Investigator site 1

Valencia, , Spain

Site Status

Investigator site 2

Valencia, , Spain

Site Status

Countries

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Australia Belgium Spain

Other Identifiers

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2017-003356-23

Identifier Type: EUDRACT_NUMBER

Identifier Source: secondary_id

ALX0171-C204

Identifier Type: -

Identifier Source: org_study_id

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