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A Trial to Evaluate the Optimal Dose of MV-LASV (V182-001)

Primary Purpose

Lassa Virus Infection

Status
Completed
Phase
Phase 1
Locations
Belgium
Study Type
Interventional
Intervention
MV-LASV
Placebo
Sponsored by
Themis Bioscience GmbH
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Lassa Virus Infection focused on measuring Lassa Virus Infection, Prevention, Vaccine, Phase 1, Lassa Fever

Eligibility Criteria

18 Years - 55 Years (Adult)All SexesAccepts Healthy Volunteers

Inclusion Criteria:

  1. Signed informed consent obtained before any trial-related activities
  2. Healthy men or women aged 18 to ≤ 55 years on the day of consenting
  3. Ability to comprehend the full nature and purpose of the study, including possible risks and side effects; ability to cooperate with the investigator and to comply with the requirements of the entire study
  4. All female participants of childbearing potential, defined as all woman physiologically capable of becoming pregnant, must have a negative pregnancy test at screening
  5. Willingness not to become pregnant or to father a child during the study up to 182 days after the first vaccination by practicing reliable methods of contraception
  6. Availability during the duration of the trial

Exclusion Criteria:

  1. Participation in another investigational clinical study (including exposure to an IMP or device) within four weeks before the screening visit or planned concurrent participation in another clinical study before study completion
  2. History of immunodeficiency, known HIV infection or current hepatitis B/C infection
  3. History of drug addiction including alcohol dependence within the last two years
  4. Inability or unwillingness to avoid intake of more than around 20g alcohol per day during 48 hours after each vaccination
  5. Vaccination within four weeks prior to first vaccination or planning to receive any non-study vaccine within 182 days after the first vaccination
  6. Prior receipt of any Lassa vaccine
  7. Recent infection within one week prior to Screening visit
  8. Blood donations including plasma donations, 90 days prior to Screening visit and anticipated blood, plasma, tissue, sperm or organ donation, throughout the study until end of treatment period
  9. Clinically relevant history of renal, hepatic, gastrointestinal, cardiovascular, respiratory, skin, hematological, endocrine, inflammatory, autoimmune or neurological diseases or clinically relevant abnormal laboratory values, that in the opinion of the investigator may interfere with the aim of the study
  10. History of neoplastic disease (excluding non-melanoma skin cancer that was successfully treated) within the past five years or a history of any hematological malignancy
  11. Behavioral, cognitive, or psychiatric condition that in the opinion of the investigator affects the ability of the participant to understand and cooperate with the study protocol
  12. History of severe adverse reactions to vaccine administration, including anaphylaxis and related symptoms, such as urticaria, respiratory difficulty, angioedema and abdominal pain to vaccines, or history of allergic reaction likely to be exacerbated by any component of the vaccine
  13. History of or present hearing deficit
  14. Present thrombocytopenia and/or history of thrombocytopenia and/or bleeding disorders.
  15. History of anaphylaxis to drugs or other allergic reactions, which the investigator considers compromising the safety of the volunteer
  16. Use of medication during two weeks before the first vaccination and throughout the study, which the investigator considers affecting the validity of the study, except hormonal contraception or hormonal replacement therapy in female participants (prior to taking any medication within 72 hours before study vaccination, the participant should consult the investigator)
  17. Use of immunosuppressive drugs like corticosteroids (excluding topical preparations) within 30 days prior to the first vaccination or anticipated use before completion of day 182
  18. Receipt of blood products or immunoglobulins within 120 days prior to the Screening Visit or anticipated receipt of any blood product or immunoglobulin before completion of day 182
  19. Pregnancy or lactation at screening or planning to become pregnant before completion of day 182
  20. Unreliable contraception Methods
  21. Persons in a direct relationship with the sponsor, an investigator or other study team members. Direct dependent relationships include close relatives (i.e. children, parents, partner/spouse, siblings) as well as employees of the clinical study site or the sponsor
  22. Individuals who are living and/or working with severely immunocompromised people, children under 15 months old or pregnant women
  23. Participants who travelled within one year prior to the first vaccination or plan to travel during the study to an endemic country
  24. A rash, dermatological condition or tattoos that would, in the opinion of the Investigator, interfere with injection site reaction rating

Sites / Locations

  • University of Antwerpen, Centre for the Evaluation of Vaccination (CEV)

Arms of the Study

Arm 1

Arm 2

Arm 3

Arm Type

Experimental

Experimental

Placebo Comparator

Arm Label

MV-LASV low dose: treatment group A

MV-LASV high dose: treatment group B

Placebo: treatment group C

Arm Description

In total 24 participants will receive two low dose treatments with MV-LASV on day 0 and 28.

In total 24 participants will receive two high dose treatments with MV-LASV on day 0 and 28.

In total 12 participants will receive placebo treatment on day 0 and 28.

Outcomes

Primary Outcome Measures

Rate of solicited and unsolicited Adverse Events (AEs)
Rate of solicited and unsolicited adverse events (AEs) during the treatment period up to day 56

Secondary Outcome Measures

Rate of Serious Adverse Events (SAEs)
Rate of Serious Adverse Events (SAEs) during the treatment period up to study day 365
Cell-mediated immunity as confirmed by the presence of functional CD4+ and CD8+ T-cells
Cell-mediated immunity specific for LASV up to day 56 as confirmed by the presence of functional CD4+ and CD8+ T-cells
Measurement of anti-LASV antibodies determined by Enzyme-linked Immunosorbent Assay (ELISA)
Measurement of anti-LASV antibodies up to day 56 determined by Enzyme-linked Immunosorbent Assay (ELISA)
Quantification of functional, neutralizing antibodies via Virus Neutralization Tests (VNT)
Quantification of functional, neutralizing antibodies on days 0, 28 and 56 via Virus Neutralization Tests (VNT)
Rate of abnormal laboratory parameters
Rate of abnormal laboratory parameters until day 56
RT-qPCR Analysis of MV-LASV Viral Vector in Human Blood, Urine, and Saliva Samples
Shedding of live recombinant virus up to day 42

Full Information

First Posted
July 29, 2019
Last Updated
January 21, 2022
Sponsor
Themis Bioscience GmbH
Collaborators
Coalition for Epidemic Preparedness Innovations, Harmony Clinical Research, Assign Data Management and Biostatistics GmbH
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1. Study Identification

Unique Protocol Identification Number
NCT04055454
Brief Title
A Trial to Evaluate the Optimal Dose of MV-LASV (V182-001)
Official Title
A Randomized, Placebo-controlled Trial to Evaluate the Optimal Dose of MV-LASV, a New Vaccine Against LASSA Virus Infection, Regarding Safety, Tolerability & Immunogenicity in Healthy Volunteers Consisting of an Unblinded Dose Escalation & an Observer-blinded Treatment Phase
Study Type
Interventional

2. Study Status

Record Verification Date
January 2022
Overall Recruitment Status
Completed
Study Start Date
September 26, 2019 (Actual)
Primary Completion Date
March 13, 2020 (Actual)
Study Completion Date
January 15, 2021 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Themis Bioscience GmbH
Collaborators
Coalition for Epidemic Preparedness Innovations, Harmony Clinical Research, Assign Data Management and Biostatistics GmbH

4. Oversight

Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
Yes

5. Study Description

Brief Summary
This is a randomized, placebo-controlled, single-center, dose finding phase I trial in healthy adult volunteer participants consisting of two phases, an unblinded dose escalation and an observer-blinded treatment phase. The aim is to investigate the safety, tolerability and immunogenicity of MV-LASV after administration of two different dose levels of MV-LASV. Placebo will be applied to blind the different Treatment schedules.
Detailed Description
This is a prospective, interventional, observer-blinded, randomized, phase I trial, comparing different dose levels of MV-LASV. As safety precaution, the study will begin with enrollment of two successive unblinded dose groups of sentinel participants randomized into groups of four in an open-label fashion (group A and B). Thereafter, 52 participants will be enrolled in an observer-blinded, randomized manner into one of the three treatment groups (A, B or C). Placebo will be applied to blind the different Treatment schedules. After the screening visit, participants will bei enrolled to one of three Treatment groups. Visits for immunogenicity sample collection and safety assessments will be performed for 56 days, and additionally subjects will for long-term follow-up up to 365 days. The investigator and site personnel assessing Adverse Events (AEs), all participants, as well as the sponsor's representatives involved in the monitoring and conduct of the study will be unblinded to which vaccine was administered within the unblinded treatment phase. Only the site personnel performing randomization, reparation and administration of Investigational Medicinal Product (IMP) will be unblinded within the randomized observer-blinded treatment phase.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Lassa Virus Infection
Keywords
Lassa Virus Infection, Prevention, Vaccine, Phase 1, Lassa Fever

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 1
Interventional Study Model
Parallel Assignment
Masking
ParticipantCare ProviderInvestigatorOutcomes Assessor
Masking Description
As safety precaution, the study will begin with enrollment of two successive unblinded dose groups of sentinel participants randomized into groups of four in an open-label fashion (group A and B). All site personnel, Sponsor and participants will be unblinded. Then remaining participants will be randomized in a blinded manner to one of three Treatment Groups (A, B, C). Site personnel responsible for study medication handling, preparation and Administration will be unblinded, only.
Allocation
Randomized
Enrollment
60 (Actual)

8. Arms, Groups, and Interventions

Arm Title
MV-LASV low dose: treatment group A
Arm Type
Experimental
Arm Description
In total 24 participants will receive two low dose treatments with MV-LASV on day 0 and 28.
Arm Title
MV-LASV high dose: treatment group B
Arm Type
Experimental
Arm Description
In total 24 participants will receive two high dose treatments with MV-LASV on day 0 and 28.
Arm Title
Placebo: treatment group C
Arm Type
Placebo Comparator
Arm Description
In total 12 participants will receive placebo treatment on day 0 and 28.
Intervention Type
Biological
Intervention Name(s)
MV-LASV
Intervention Description
The MV-LASV vaccine candidate is a recombinant live attenuated viral vectored vaccine, based on the backbone of the measles Schwarz virus strain for prophylaxis of Lassa infection and will be administered in two different dose levels by intra muscular (i.m.) injection.
Intervention Type
Other
Intervention Name(s)
Placebo
Intervention Description
A sterile physiological saline solution will be used as placebo to ensure blinding of the treatment with low dose MV-LASV and placebo within treatment group A. Additionally, the Placebo will be used as a control arm to enable comparison of treatment reactions within treatment groups B and C.
Primary Outcome Measure Information:
Title
Rate of solicited and unsolicited Adverse Events (AEs)
Description
Rate of solicited and unsolicited adverse events (AEs) during the treatment period up to day 56
Time Frame
56 days
Secondary Outcome Measure Information:
Title
Rate of Serious Adverse Events (SAEs)
Description
Rate of Serious Adverse Events (SAEs) during the treatment period up to study day 365
Time Frame
365 days
Title
Cell-mediated immunity as confirmed by the presence of functional CD4+ and CD8+ T-cells
Description
Cell-mediated immunity specific for LASV up to day 56 as confirmed by the presence of functional CD4+ and CD8+ T-cells
Time Frame
56 days
Title
Measurement of anti-LASV antibodies determined by Enzyme-linked Immunosorbent Assay (ELISA)
Description
Measurement of anti-LASV antibodies up to day 56 determined by Enzyme-linked Immunosorbent Assay (ELISA)
Time Frame
56 days
Title
Quantification of functional, neutralizing antibodies via Virus Neutralization Tests (VNT)
Description
Quantification of functional, neutralizing antibodies on days 0, 28 and 56 via Virus Neutralization Tests (VNT)
Time Frame
56 days
Title
Rate of abnormal laboratory parameters
Description
Rate of abnormal laboratory parameters until day 56
Time Frame
56 days
Title
RT-qPCR Analysis of MV-LASV Viral Vector in Human Blood, Urine, and Saliva Samples
Description
Shedding of live recombinant virus up to day 42
Time Frame
42 days

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
55 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Eligibility Criteria
Inclusion Criteria: Signed informed consent obtained before any trial-related activities Healthy men or women aged 18 to ≤ 55 years on the day of consenting Ability to comprehend the full nature and purpose of the study, including possible risks and side effects; ability to cooperate with the investigator and to comply with the requirements of the entire study All female participants of childbearing potential, defined as all woman physiologically capable of becoming pregnant, must have a negative pregnancy test at screening Willingness not to become pregnant or to father a child during the study up to 182 days after the first vaccination by practicing reliable methods of contraception Availability during the duration of the trial Exclusion Criteria: Participation in another investigational clinical study (including exposure to an IMP or device) within four weeks before the screening visit or planned concurrent participation in another clinical study before study completion History of immunodeficiency, known HIV infection or current hepatitis B/C infection History of drug addiction including alcohol dependence within the last two years Inability or unwillingness to avoid intake of more than around 20g alcohol per day during 48 hours after each vaccination Vaccination within four weeks prior to first vaccination or planning to receive any non-study vaccine within 182 days after the first vaccination Prior receipt of any Lassa vaccine Recent infection within one week prior to Screening visit Blood donations including plasma donations, 90 days prior to Screening visit and anticipated blood, plasma, tissue, sperm or organ donation, throughout the study until end of treatment period Clinically relevant history of renal, hepatic, gastrointestinal, cardiovascular, respiratory, skin, hematological, endocrine, inflammatory, autoimmune or neurological diseases or clinically relevant abnormal laboratory values, that in the opinion of the investigator may interfere with the aim of the study History of neoplastic disease (excluding non-melanoma skin cancer that was successfully treated) within the past five years or a history of any hematological malignancy Behavioral, cognitive, or psychiatric condition that in the opinion of the investigator affects the ability of the participant to understand and cooperate with the study protocol History of severe adverse reactions to vaccine administration, including anaphylaxis and related symptoms, such as urticaria, respiratory difficulty, angioedema and abdominal pain to vaccines, or history of allergic reaction likely to be exacerbated by any component of the vaccine History of or present hearing deficit Present thrombocytopenia and/or history of thrombocytopenia and/or bleeding disorders. History of anaphylaxis to drugs or other allergic reactions, which the investigator considers compromising the safety of the volunteer Use of medication during two weeks before the first vaccination and throughout the study, which the investigator considers affecting the validity of the study, except hormonal contraception or hormonal replacement therapy in female participants (prior to taking any medication within 72 hours before study vaccination, the participant should consult the investigator) Use of immunosuppressive drugs like corticosteroids (excluding topical preparations) within 30 days prior to the first vaccination or anticipated use before completion of day 182 Receipt of blood products or immunoglobulins within 120 days prior to the Screening Visit or anticipated receipt of any blood product or immunoglobulin before completion of day 182 Pregnancy or lactation at screening or planning to become pregnant before completion of day 182 Unreliable contraception Methods Persons in a direct relationship with the sponsor, an investigator or other study team members. Direct dependent relationships include close relatives (i.e. children, parents, partner/spouse, siblings) as well as employees of the clinical study site or the sponsor Individuals who are living and/or working with severely immunocompromised people, children under 15 months old or pregnant women Participants who travelled within one year prior to the first vaccination or plan to travel during the study to an endemic country A rash, dermatological condition or tattoos that would, in the opinion of the Investigator, interfere with injection site reaction rating
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Medical Director
Organizational Affiliation
Merck Sharp & Dohme LLC
Official's Role
Study Director
Facility Information:
Facility Name
University of Antwerpen, Centre for the Evaluation of Vaccination (CEV)
City
Antwerp
Country
Belgium

12. IPD Sharing Statement

Plan to Share IPD
Yes
IPD Sharing Plan Description
http://engagezone.msd.com/doc/ProcedureAccessClinicalTrialData.pdf
IPD Sharing URL
http://engagezone.msd.com/ds_documentation.php

Learn more about this trial

A Trial to Evaluate the Optimal Dose of MV-LASV (V182-001)

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