Safety of and Immune Response to Recombinant Live-Attenuated Parainfluenza Type 1 Virus Vaccine



Status:Completed
Conditions:Influenza, Infectious Disease
Therapuetic Areas:Immunology / Infectious Diseases
Healthy:No
Age Range:Any
Updated:2/4/2013
Start Date:March 2008
End Date:January 2013
Contact:Karen Loehr, BSN
Email:kloehr@jhsph.edu
Phone:410-502-3333

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A Phase I Study of the Safety and Immunogenicity of the Recombinant Live-Attenuated Human Parainfluenza Type 1 Virus Vaccine, rHPIV1 84/del170/942A, Lot PIV1 #104A, Delivered as Nose Drops to Adults 18 to 49 Years of Age, HPIV1-Seropositive Children 15 to 59 Months of Age, and HPIV1-Seronegative Infants and Children 6 to 59 Months of Age


Human Parainfluenza Virus Type 1 (HPIV1) is a leading cause of viral respiratory infections
in children, the elderly, and those with compromised immune systems. HPIV1 is also the
leading cause of viral croup in children under 6 years old. The purpose of this study is to
determine the safety of and immune response to a HPIV1 vaccine, rHPIVI1 84/del170/942A, in 2
groups of adults and then in children who have been previously exposed to HPIV1. Once the
safety of this vaccine has been established in these groups, an additional 2 groups of
infants and children who have not been previously exposed to HPIV1 will be vaccinated. Naïve
infants and children are the most vulnerable to naturally circulating HPIV1 and are the
target population of this vaccine.


HPIV1 infection can result in severe respiratory illness that often leads to the
hospitalization of infants and young children. HPIV1 is responsible for approximately 6% of
all pediatric hospitalizations for respiratory tract diseases and is a main cause of severe
lower respiratory tract diseases, including pneumonia and bronchiolitis in children less
than 6 years old. The purpose of this study is to determine the safety of and immune
response to a HPIV1 vaccine, rHPIVI1 84/del170/942A, in 5 main volunteer group: first in
adults (group 1 and 2), and then in seropositive children (group 3). The last 2 groups will
be seronegative infants and children that are split into 2 dosing groups; one group of
seronegative infants and children will receive a lower dose of vaccine (group 4) and a
second group of seronegative infants and children (group 5) will receive a higher dose of
vaccine. This study will last approximately 8 weeks per group. Additional information about
each of the groups is as follows:

Groups 1 and 2 will consist of 35 adults total, 18 to 49 years of age. These groups will
receive one immunization with rHPIV1 84/del170/942A at study entry. Immunization will be
given as nose drops. Study visits will occur on Days 3, 4, 5, 6, 7, 10, and 28. Medical
history, vital signs, clinical assessment, and nasal wash will occur at most visits. Blood
and urine tests will occur at selected visits. A urine pregnancy test will occur for females
at study entry. Follow-up phone reports will also be required on Day 56.

Enrollment into Group 3 will begin only after safety data from Groups 1 and 2 are evaluated.
Group 3 will consist of 15 seropositive children, 15 to 59 months of age. This group will
receive either one immunization of rHPIV1 84/del170/942A or placebo at study entry.
Immunization will be given as nose drops. Study visits will occur on Days 3, 4, 5, 6, 7, 10,
and 28. Medical history, vital signs, clinical assessment, and nasal wash will occur at most
visits. Blood and urine tests will occur at selected visits. Parents will be required to
submit reports over the phone throughout the study. These reports will include the temporal
temperature from the previous day.

Enrollment into Group 4 will begin only after safety data from Group 3 are evaluated. Group
4 will consist of 21-30 seronegative infants and children, 6 to 59 months of age. This group
will receive either one immunization of rHPIV1 84/del170/942A or placebo at study entry.
Immunization will be given as nose drops. Study visits will occur on Days 3, 5, 7, 10, 12,
14, 17, 19, 21, 28, and 56. Medical history, vital signs, clinical assessment, and nasal
wash will occur at most visits. Blood tests will occur at selected visits. Parents will be
required to submit reports over the phone throughout the study. These reports will include
the temporal temperature from the previous day.

Enrollment into Group 5 will begin only after safety data from Group 4 are evaluated. Group
5 will consist of 21-30 seronegative infants and children 6 to 59 months of age. This group
will receive either one immunization of rHPIV1 84/del170/942A or placebo at study entry. The
immunization will be given as nose drops. The vaccine dosage that participants receive in
Group 5 will be greater than the dose in Group 4. Study visits will occur on Days 3, 5, 7,
10, 12, 14, 17, 19, 21, 28, and 56. Medical history, vital signs, clinical assessment, and
nasal wash will occur at most visits. Blood tests will occur at selected visits. Parents
will be required to submit reports over the phone throughout the study. These reports will
include the temporal temperature from the previous day.

Adult Inclusion Criteria:

- In good health

- Available for the duration of the trial

- Available for post-inoculation telephone contact

- For females, must agree to use effective birth control methods for the duration of
the study

Seropositive Children Inclusion Criteria:

- In good health

- Seropositive for HPIV1

- Available for the duration of the study

Seronegative Infants and Children Inclusion Criteria:

- In good health

- Seronegative for HPIV1 antibody

- Available for the duration of the study

Adult Exclusion Criteria:

- Neurologic, cardiac, pulmonary, hepatic, rheumatologic, autoimmune, or renal disease

- Condition, in the opinion of the investigator, that will not allow the participant to
comply with the protocol

- Alcohol or drug abuse

- History of anaphylaxis

- History of splenectomy

- Diagnosis of asthma within 2 years of study entry

- HIV-infected

- Hepatitis C infection

- Hepatitis B infection

- Abnormal urinalysis

- Known immunodeficiency syndrome

- Current use of nasal or systemic steroid medications

- Receipt of blood products within 3 months of study entry

- Current smoker unwilling to stop smoking for the duration of the study. The decision
to exclude a potential subject is made by the investigator based upon the potential
subject's medical history and physical examination.

- Participation in another investigational vaccine or drug trial within 30 days of
receiving the investigational vaccine

- Receipt of live vaccine within 4 weeks or a killed vaccine within 2 weeks or immune
globin within 3 months prior to receiving the investigational vaccine

- Previous immunization with an HPIV1 vaccine

- Known hypersensitivity to any vaccine component

- Participants whose profession and/or personal responsibilities involve caring for
children less than 6 months of age or for immunosuppressed individuals

- Persistent systolic blood pressure more than 140 mm Hg or diastolic pressure more
than 90 mm Hg

- Body mass index (BMI) more than 35

- Pregnant or breastfeeding

Seropositive and Seronegative Infants and Children Exclusion Criteria:

- Known or suspected impairment of immunological functions as determined by the
investigator

- Major congenital malformations, including congenital cleft palate, cytogenetic
abnormalities, or serious chronic disorders

- Previous immunization with HPIV1 vaccine

- Current use of nasal or systemic steroid medications

- Previous serious vaccine-associated adverse event or anaphylactic reaction

- Known hypersensitivity to any vaccine component

- Lung or heart disease, including reactive airway disease as determined by the
investigator

- Member of household that includes an immunocompromised individual or infant less than
6 months of age

- Attends day care with infants less than 6 months of age or immunosuppressed
individuals. More information about this criterion can be found in the protocol.

- Participation in another investigational vaccine or drug trial within 30 days of
receiving the investigational vaccine or while study is occurring
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