A Randomized, Double-Blind, Placebo-Controlled Study to Evaluate Safety of MEDI-559 in Healthy 1 to <24 Month-Old Children

NCT ID: NCT00767416

Last Updated: 2016-07-20

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

COMPLETED

Clinical Phase

PHASE1/PHASE2

Total Enrollment

116 participants

Study Classification

INTERVENTIONAL

Study Start Date

2008-10-31

Study Completion Date

2011-12-31

Brief Summary

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The primary objective of this study is to describe the 28-day post-final dose safety and tolerability of three doses of MEDI-559 at 10\^5 FFU when administered to healthy RSV seronegative children 1 to \<24 months of age.

Detailed Description

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This is a randomized, double-blind, placebo-controlled, multi-dose, Phase 1/2a multi-center trial to evaluate the safety, tolerability, viral shedding, immunogenicity, and genotypic and phenotypic stability of MEDI-559 in RSV seronegative infants 5 to \<24 months of age and in infants 1 to \<3 months of age regardless of baseline serostatus. The primary objective of this study is to describe the 28-day post-final dose safety and tolerability of three doses of MEDI-559 at 10\^5 FFU when administered to healthy RSV seronegative children 5 to \<24 months of age and to healthy infants 1 to \<3 months of age regardless of baseline serostatus.

MEDI-559 will be administered at a dose of 10\^5 fluorescent focus units (FFU) on a 0, 2, and 4 month schedule to two cohorts of subjects in a step-wise fashion. The target sample size for this study is 320 subjects, with 160 subjects 5 to \<24 months of age enrolled into Cohort 1 and 160 subjects 1 to \<3 months of age enrolled into Cohort 2. Each cohort will be randomized 1:1 (MEDI-559 to placebo) and stratified by site. Cohort 1 will initiate dosing at 10\^5 FFU MEDI-559. Blinded safety data from the first 40 subjects enrolled in Cohort 1 for the 28 days following administration of the first dose of vaccine will be reviewed. If no safety concerns are noted, Cohort 2 will initiate dosing at 10\^5 FFU. Enrollment into Cohort 2 will be halted after approximately 40 subjects have been randomized, and blinded safety data will be reviewed through 28 days post Dose 1. If no safety concerns are noted, the remainder of Cohort 2 will be enrolled. All subjects will be followed through 365 days after randomization to ensure that each subject has been followed through an RSV season.

Conditions

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Healthy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Cohort 1 MEDI-559

MEDI-559

Group Type EXPERIMENTAL

MEDI-559

Intervention Type BIOLOGICAL

Cohort 1 (5 to \<24 months): N=80 MEDI-559 at 10\^5 FFU at 0, 2, and 4 months; frozen preparation filled into 0.5 ml luer slip-tip syringes. Each 0.2 ml dose contains 10\^5 FFU MEDI-559 in a sucrose phosphate glutamate buffer.

Cohort 1 Placebo

Placebo

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type OTHER

Cohort 1 (5 to \< 24 months); N = 80 placebo at 0, 2, and 4 months; frozen preparation filled into 0.5 ml luer slip-tip syringes. Each 0.2 ml dose contains sucrose phosphate buffer.

Interventions

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MEDI-559

Cohort 1 (5 to \<24 months): N=80 MEDI-559 at 10\^5 FFU at 0, 2, and 4 months; frozen preparation filled into 0.5 ml luer slip-tip syringes. Each 0.2 ml dose contains 10\^5 FFU MEDI-559 in a sucrose phosphate glutamate buffer.

Intervention Type BIOLOGICAL

Placebo

Cohort 1 (5 to \< 24 months); N = 80 placebo at 0, 2, and 4 months; frozen preparation filled into 0.5 ml luer slip-tip syringes. Each 0.2 ml dose contains sucrose phosphate buffer.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Male or female whose age on the day of randomization falls within one of the two age cohorts: Cohort 1: 5 to \<24 months (reached their 5th month birthday but not yet reached their 2nd year birthday); Cohort 2: 1 to \< 3 months (\>28 days of age and not yet reached their 3rd month birthday)
* Cohort 1 only: Subject is seronegative to RSV at screening
* Subject was the product of normal full term pregnancy (defined as 36-42 weeks gestation)
* Subject is in general good health
* Written informed consent and HIPAA authorization (if applicable) obtained from the subject's legal representative
* Subject's legal representative is willing and able to bring the subject to the study site for evaluation of respiratory illness in accordance with the protocol

Exclusion Criteria

* Any fever (≥ 100.4°F \[≥ 38.0°C\]), regardless of route within 7 days prior to randomization
* Acute illness (defined as the presence of moderate or severe signs and symptoms) at the time of randomization
* Moderate or severe nasal congestion that in the investigator's opinion could prevent intranasal delivery of vaccine
* Cohort 1 only: weight ≤ 5th percentile for age on the day of randomization
* Cohort 2 only: history of low birth weight (ie, \<2500 grams at birth) or weight ≤ 5th percentile for age on the day of randomization
* Living in the same home or enrolled in the same classroom at day care with infants \<6 months of age within 28 days after each dose (only one child per household may be enrolled into the study)
* Contact with pregnant caregiver within 28 days after each dose
* Living in a household with someone who is immunocompromised within 28 days after each dose; the subject should also avoid close contact with immunocompromised individuals for at least 28 days after each study vaccine dosing
* Living in a household with someone who works in the healthcare field and who has direct patient care responsibilities within 28 days after each dose
* Living in a household with someone who is a day care provider or preschool teacher for children \<6 months of age within 28 days after each dose
Minimum Eligible Age

1 Month

Maximum Eligible Age

23 Months

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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MedImmune LLC

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Joseph Sliman, M.D.

Role: STUDY_DIRECTOR

MedImmune LLC

Locations

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Research Site

Greenville, Alabama, United States

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Huntsville, Alabama, United States

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Mobile, Alabama, United States

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Conway, Arkansas, United States

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Little Rock, Arkansas, United States

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Little Rock, Arkansas, United States

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Anaheim, California, United States

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Cypress, California, United States

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Downey, California, United States

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Huntington Beach, California, United States

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Lakewood, California, United States

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Long Beach, California, United States

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Los Angeles, California, United States

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Los Angeles, California, United States

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Paramount, California, United States

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San Diego, California, United States

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Santa Ana, California, United States

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Thornton, Colorado, United States

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Hartford, Connecticut, United States

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Washington D.C., District of Columbia, United States

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Miami, Florida, United States

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Miami, Florida, United States

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Orange City, Florida, United States

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Tampa, Florida, United States

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Dalton, Georgia, United States

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Chicago, Illinois, United States

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Fishers, Indiana, United States

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New Albany, Indiana, United States

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South Bend, Indiana, United States

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Ames, Iowa, United States

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Bardstown, Kentucky, United States

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Lexington, Kentucky, United States

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Lexington, Kentucky, United States

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Louisville, Kentucky, United States

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Louisville, Kentucky, United States

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Paducah, Kentucky, United States

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Metarie, Louisiana, United States

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Fredrick, Maryland, United States

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Boston, Massachusetts, United States

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Fall River, Massachusetts, United States

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Bridgeton, Missouri, United States

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Kansas City, Missouri, United States

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Omaha, Nebraska, United States

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Omaha, Nebraska, United States

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Brooklyn, New York, United States

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Endwell, New York, United States

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Stony Brook, New York, United States

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Syracuse, New York, United States

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Cleveland, Ohio, United States

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Cleveland, Ohio, United States

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Huber Heights, Ohio, United States

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Norman, Oklahoma, United States

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Tulsa, Oklahoma, United States

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Warwick, Rhode Island, United States

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Spartanburg, South Carolina, United States

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Franklin, Tennessee, United States

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Jackson, Tennessee, United States

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Johnson City, Tennessee, United States

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Kingsport, Tennessee, United States

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Corpus Christi, Texas, United States

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Houston, Texas, United States

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Houston, Texas, United States

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San Angelo, Texas, United States

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San Antonio, Texas, United States

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San Antonio, Texas, United States

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San Antonio, Texas, United States

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Tomball, Texas, United States

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Layton, Utah, United States

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St. George, Utah, United States

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Syracuse, Utah, United States

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Charlottesville, Virginia, United States

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Colonial Heights, Virginia, United States

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Midlothian, Virginia, United States

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Richmond, Virginia, United States

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Walla Walla, Washington, United States

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Caguas, , Puerto Rico

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Countries

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United States Puerto Rico

References

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Malkin E, Yogev R, Abughali N, Sliman J, Wang CK, Zuo F, Yang CF, Eickhoff M, Esser MT, Tang RS, Dubovsky F. Safety and immunogenicity of a live attenuated RSV vaccine in healthy RSV-seronegative children 5 to 24 months of age. PLoS One. 2013 Oct 29;8(10):e77104. doi: 10.1371/journal.pone.0077104. eCollection 2013.

Reference Type DERIVED
PMID: 24204744 (View on PubMed)

Related Links

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Other Identifiers

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MI-CP147

Identifier Type: -

Identifier Source: org_study_id

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