Safety, Tolerability and Long-term Immunogenicity of Different Formulations of a Chikungunya Vaccine (V184-005)

Themis Bioscience GmbH60 enrolled

Overview

The purpose of this study is to investigate immunogenicity and safety of Measles Virus-Chikungunya (MV-CHIK) vaccine in different dose regimens, 28 days after one or two vaccinations.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

QUADRUPLE

Enrollment

Conditions

Chikungunya Virus Infection

Interventions

MV-CHIK lyophilised formulation, low doseBIOLOGICAL

MV-CHIK, a live-attenuated recombinant measles vaccine expressing Chikungunya virus antigens, lyophilized low dose (powder for suspension in water for intramuscular \[IM\] injection): 5x10\^4 ±0.5 log tissue culture infectious dose 50 (TCID50)/dose.

MV-CHIK liquid frozen formulation, low doseBIOLOGICAL

MV-CHIK, a live-attenuated recombinant measles vaccine expressing Chikungunya virus antigens, liquid frozen low dose (suspension for IM injection): 1x10\^5 ±0.5 log TCID50/dose.

MV-CHIK SPS® formulation, low doseBIOLOGICAL

MV-CHIK, a live-attenuated recombinant measles vaccine expressing Chikungunya virus antigens, liquid SPS® low dose (suspension for IM injection): 1x10\^5 ±0.5 log TCID50/dose.

Eligibility

Sex: ALLMin age: 18 YearsMax age: 55 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Is able 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 * Has a negative serum pregnancy test at screening (for female participants) * Has a willingness not to become pregnant or to father a child during the entire study period by practicing reliable methods of contraception * Has availability during the duration of the trial Exclusion Criteria: * Has participated in another clinical study (including exposure to an investigational medicinal product or device) within one month before the screening visit or planned concurrent participation in another clinical study before completion of the treatment period * Has a history of immunodeficiency, known human immunodeficiency virus (HIV) infection or current hepatitis B/C infection * Has a history of drug addiction including alcohol dependence within the last 2 years * Has an inability or unwillingness to avoid intake of more than around 20 grams alcohol per day during 48 hours after each vaccination (equals roughly 0.5 liter beer or 0.25 liter of wine) * Has had a vaccination within 4 weeks prior to first vaccination or planning to receive any non-study vaccine until end of treatment period * Has had a prior receipt of any Chikungunya vaccine * Has a history of moderate or severe arthritis or arthralgia within the past 3 months prior to screening * Has had a recent infection within 1 week prior to screening * Has made 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 * Has 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 * Has a history of neoplastic disease (excluding non-melanoma skin cancer that was successfully treated) within the past 5 years or a history of any hematological malignancy * Has 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 * Has a 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 * Has a history of anaphylaxis to drugs or other allergic reactions, which the investigator considers compromising the safety of the participant. * Use of medication during 2 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. * Use of immunosuppressive drugs like corticosteroids (excluding topical preparations) within 30 days prior to the first vaccination or anticipated use before completion of the treatment period * Has 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 the treatment period * Has pregnancy (positive pregnancy test at screening or during the treatment period) or lactation at screening, or planning to become pregnant during the treatment period * Has unreliable contraception methods * Is a person 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 study site or the sponsor

Locations (1)

Celerion Belfast

Belfast, Northern Ireland, United Kingdom

Outcomes

Primary Outcomes

Geometric Mean Titer of Anti-Chikungunya Antibodies as Measured by 50% Plaque Reduction Neutralization Test 28 Days After Last MV-CHIK Vaccination

Participant serum was collected for determination of antibody responses by 50% plaque reduction neutralization test (PRNT50). Geometric Mean Titer (GMT) of functional antibodies as measured by PRNT50 were assessed. Geometric mean titers and GMT ratios were estimated by applying an analysis of variance (ANOVA) including the factor treatment group. This was done using log10 transformed data and taking the anti-log of the resulting point estimates for the least squares means, least squares means differences and the corresponding 2 sided 95% confidence intervals (CI). P-values were also provided to compare GMTs between treatment groups adjusted for multiple comparisons according to Tukey Kramer.

Time frame: 28 days after last vaccination (Up to Day 56)

Secondary Outcomes

Percentage of Participants With Solicited and Unsolicited Adverse Events

An adverse event (AE) includes any untoward medical occurrence in a participant to whom an IMP has been administered, not necessarily caused by or related to that product. An AE can therefore be any unfavourable or unintended sign, abnormal laboratory finding, symptom or disease temporally associated with the use of an IMP whether or not considered related to the IMP. The percentage of participants with solicited and unsolicited AEs was assessed.

Time frame: Up to Day 56

Percentage of Participants With at Least 1 Serious Adverse Event

A serious adverse event (SAE) is any untoward medical occurrence that results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, and consists of a congenital anomaly, birth defect or other important medical events. As per the protocol, adverse events were analyzed per treatment group but were not assessed with respect to individual vaccinations.

Time frame: Up to Day 56

Geometric Mean Titer of Anti-Chikungunya Antibodies as Measured by PRNT50

Data from ClinicalTrials.gov

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