Human Metapneumovirus Clinical Trial
Official title:
Phase 1 Inpatient Study of rHMPV-SHs, a Human Metapneumovirus Challenge Strain, Administered to Healthy Adults in Isolation
Human metapneumovirus (HMPV) is a virus that can cause respiratory illness. In older adults, those with asthma, infants, and children, illness can be severe, but in healthy adults the virus frequently causes no symptoms. The National Institute of Allergy and Infectious Diseases (NIAID) is working to develop a vaccine for HMPV that could be given to infants. Before potential vaccines can be tested, information about how HMPV affects healthy adults is needed. This study will examine the effects of exposure to HMPV in healthy adults.
Status | Completed |
Enrollment | 21 |
Est. completion date | December 2010 |
Est. primary completion date | December 2010 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | Both |
Age group | 18 Years to 49 Years |
Eligibility |
Inclusion Criteria: - General good health, without significant medical illness, physical examination findings, or significant laboratory abnormalities as determined by the investigator - Available for the duration of the trial - Female subjects must agree to use effective birth control methods for the duration of the study Exclusion Criteria: - Pregnant - Currently breastfeeding - Evidence of clinically significant diseases in the nervous system, heart, lungs, liver, autoimmune system, or kidney or involving rheumatism, as determined by medical history, physical examination, or laboratory studies, including urine testing. - Clinically significant alanine aminotransferase (ALT) levels, as determined by the principal investigator (PI) - Behavioral or cognitive impairment or psychiatric disease that, in the opinion of the investigator, affects the ability to understand and cooperate with the study protocol - Human metapneumovirus (HMPV) specific serum immunoglobulin A (IgA) titer greater than 1:50 - HMPV-specific nasal wash IgA titer greater than 1:50 - Positive urine drug toxicology test indicating narcotic use - Medical, occupational, or family problems as a result of alcohol or illicit drug use during the past 12 months - Other condition that, in the opinion of the investigator, would jeopardize the safety or rights of a subject participating in the trial or would render the subject unable to comply with the protocol - History of hypersensitivity reactions - Diagnosis of asthma or reactive airway disease within the past 2 years - Positive result on test for HIV - Positive result on test for hepatitis C virus (HCV) - Positive result on test for hepatitis B virus surface antigen (HBsAg) - Known immunodeficiency syndrome - Use of corticosteroids (excluding topical or nasal preparations) or immunosuppressive drugs within 30 days prior to inoculation - Receipt of a live vaccine within 4 weeks or a killed vaccine within 2 weeks prior to inoculation with challenge virus, rHMPV-SHs - History of a surgical removal of the spleen - Receipt of blood or blood-derived products (including immunoglobulin) within 6 months prior to study inoculation - Current smoker unwilling to stop smoking for the duration of the study - Receipt of another investigational vaccine or drug within 30 days prior to study inoculation - Body mass index (BMI) greater than 35 - Shares household with a child younger than 60 months of age or an immunocompromised individual - Unwillingness to have nasal wash or blood samples saved for future respiratory virus research |
Endpoint Classification: Safety Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Prevention
Country | Name | City | State |
---|---|---|---|
United States | Johns Hopkins Bloomberg School of Public Health | Baltimore | Maryland |
Lead Sponsor | Collaborator |
---|---|
National Institute of Allergy and Infectious Diseases (NIAID) |
United States,
Bruno R, Marsico S, Minini C, Apostoli P, Fiorentini S, Caruso A. Human metapneumovirus infection in a cohort of young asymptomatic subjects. New Microbiol. 2009 Jul;32(3):297-301. — View Citation
Williams JV, Harris PA, Tollefson SJ, Halburnt-Rush LL, Pingsterhaus JM, Edwards KM, Wright PF, Crowe JE Jr. Human metapneumovirus and lower respiratory tract disease in otherwise healthy infants and children. N Engl J Med. 2004 Jan 29;350(5):443-50. — View Citation
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Frequency of challenge virus (rHMPV-SHs) infection, defined as virus shedding in respiratory secretions or serological evidence of HMPV infection | Measured at baseline and on Days 1 to 9 | No | |
Primary | rHMPV-SHs shedding, as measured by peak virus titer, mean sum of daily virus titers, and total duration of shedding | Measured at baseline and on Days 1 to 9 | No | |
Primary | Frequency and severity of respiratory illness | Measured at study completion | Yes | |
Secondary | Magnitude, frequency, and duration of serum and nasal wash antibody responses induced by rHMPV-SHs | Measured at baseline and on Days 28, 120, and 180 | No | |
Secondary | Correlation between virus shedding and severity of clinical illness | Measured at study completion | No | |
Secondary | Cytokine and chemokine concentrations in nasal wash samples and relationships between cytokine/chemokine induction, viral replication, and illness | Measured at study completion | No | |
Secondary | T-cell mediated and innate immune responses | Measured at baseline and on Days 8, 28, and 180 | No | |
Secondary | Whether HMPV infection induces characteristic gene expression patterns in cells obtained from blood or nasal wash | Measured at baseline and Days 3, 5, 7, 8, 28, and 180 | No | |
Secondary | Relationship between the development of immune responses and clearance of rHMPV-SHs | Measured at study completion | No |
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