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Fas 1/2a-studie av BLB-201-vaccin i RSV-seronegativa och seropositiva spädbarn och barn

20 oktober 2026 uppdaterad av: Blue Lake Biotechnology Inc.

En fas 1/2a-studie av säkerhet, tolerabilitet och immunogenicitet av PIV5-vektorat RSV-vaccin (BLB-201) hos RSV-seronegativa och seropositiva spädbarn och barn

This Phase 1/2a trial is a randomized, placebo-controlled trial to evaluate the safety, tolerability and immunogenicity of two ascending doses (10^6 PFU and 10^7 PFU) of intranasal BLB-201 (a recombinant parainfluenza virus type 5) administered in infants (8-24 months of age) and children (18-59 months of age) who may or may not have had prior respiratory syncytial virus (RSV) infection.

Studieöversikt

Detaljerad beskrivning

This trial is designed to evaluate the safety, tolerability and immunogenicity of BLB-201 vaccine in infants (8-24 months of age) and children (18-59 months of age) who may or may not have had prior respiratory syncytial virus (RSV) infection. One (Day 1) or two doses (Day 1 and Day 57) of low (10^6 PFU) and high dosage (10^7 PFU) of BLB-201 will be evaluated.

Studietyp

Interventionell

Inskrivning (Beräknad)

137

Fas

  • Fas 2
  • Fas 1

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studiekontakt

Studera Kontakt Backup

Studieorter

    • California
      • La Mesa, California, Förenta staterna, 91942
        • Rekrytering
        • Paradigm Clinical Research
        • Huvudutredare:
          • Shaun Berger, MD
        • Kontakt:
      • Modesto, California, Förenta staterna, 95355
        • Rekrytering
        • Paradigm Clinical Research - Modesto
        • Kontakt:
        • Huvudutredare:
          • Jose Rodriguez
      • San Diego, California, Förenta staterna, 92123
        • Rekrytering
        • University of California, San Diego
        • Kontakt:
        • Huvudutredare:
          • Ronald Teufel, MD
    • Colorado
      • Aurora, Colorado, Förenta staterna, 80012
        • Rekrytering
        • Paradigm Clinical Research Centers, LLC - Colorado, 1550 South Potomac Street, Suite 340
    • Georgia
      • Atlanta, Georgia, Förenta staterna, 30322
        • Rekrytering
        • Emory Children's Center- Vaccine Research Clinic
        • Kontakt:
        • Huvudutredare:
          • Christina Rostad
    • Idaho
      • Meridian, Idaho, Förenta staterna, 83642
        • Avslutad
        • Velocity Clinical Research, Boise
      • Rexburg, Idaho, Förenta staterna, 83440
        • Rekrytering
        • Clinical Research Prime
        • Kontakt:
        • Huvudutredare:
          • Jeffrey B. Baker
    • Kansas
      • Newton, Kansas, Förenta staterna, 67114
        • Rekrytering
        • AMR Newton
        • Huvudutredare:
          • Troy Holdeman, MD
        • Kontakt:
    • Louisiana
      • Lafayette, Louisiana, Förenta staterna, 70508
        • Avslutad
        • Velocity Clinical Research - Lafayette
    • Michigan
      • Allen Park, Michigan, Förenta staterna, 48101
        • Rekrytering
        • Michigan Institute of Research
        • Kontakt:
        • Huvudutredare:
          • Nouh Mazloum
    • Nebraska
      • Grand Island, Nebraska, Förenta staterna, 68803
        • Rekrytering
        • Velocity Clinical Research, Grand Island
        • Huvudutredare:
          • Adam Brosz, MD
        • Kontakt:
      • Lincoln, Nebraska, Förenta staterna, 68516
    • Ohio
      • Beachwood, Ohio, Förenta staterna, 44122
        • Rekrytering
        • Velocity Clinical Research, Cleveland
        • Huvudutredare:
          • Margaret Rhee, MD
        • Kontakt:
      • Cincinnati, Ohio, Förenta staterna, 45229
        • Rekrytering
        • Cincinnati Children's Hospital Medical Center
        • Kontakt:
        • Huvudutredare:
          • Paul Spearman, MD
    • South Carolina
      • Greenville, South Carolina, Förenta staterna, 29680
        • Rekrytering
        • Tribe Clinical Research, LLC Parkside Pediatrics
        • Huvudutredare:
          • Carole Mercer
        • Kontakt:
      • Greenville, South Carolina, Förenta staterna, 29607
        • Rekrytering
        • Tribe Clinical Research, LLC Parkside Pediatrics Verdae
        • Huvudutredare:
          • Scott Dobson
        • Kontakt:
    • Texas
      • Cedar Park, Texas, Förenta staterna, 78613
        • Aktiv, inte rekryterande
        • Velocity Clinical Research, Austin
      • Houston, Texas, Förenta staterna, 77030
        • Aktiv, inte rekryterande
        • Baylor College of Medicine

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

6 månader till 5 år (Barn)

Tar emot friska volontärer

Ja

Kön som är behöriga för studier

Allt

Beskrivning

Inclusion criteria for sero+ children 18 to 59 months of age enrolled in Groups 1 and 2:

Healthy children at least 18 months but less than 60 months of age whose legally-acceptable representative (LAR) understands and signs the trial informed consent and agrees to vaccine administration following a detailed explanation of the trial.

Determined by medical history, targeted physical exam, and clinical judgement of the investigator to be in a good state of health. Screening laboratory values slightly outside lab normal ranges may be acceptable if the site investigator determines that they are not clinically significant. Permitted concomitant medications include nutritional supplements, medications for gastroesophageal reflux, eye drops, and topical medications, including topical steroids, topical antibiotics, and topical antifungal agents.

Sero+ for RSV as defined by serum RSV antibody titer assay

Participant is expected to be available for the duration of the trial.

The LAR confirms that the subject has received routine immunizations appropriate for age based on the current Advisory Committee on Immunization Practices (ACIP) Recommended Immunization Schedule for Children and Adolescents Aged 18 Years or Younger.

Growing normally for age as demonstrated on a World Health Organization (WHO) growth chart, AND has a current height and weight above the 3rd percentile for age.

Inclusion criteria for sero+ or sero- infants and children 8 to 24 months of age enrolled in Groups 3 through 6:

Healthy children at least 8 months but less than 25 months of age whose LAR understands and signs the trial informed consent and agrees to vaccine administration following a detailed explanation of the trial.

Determined by medical history, targeted physical exam, and clinical judgement of the investigator to be in a good state of health. Screening laboratory values slightly outside lab normal ranges may be acceptable if the site investigator determines that they are not clinically significant. Permitted concomitant medications include nutritional supplements, medications for gastroesophageal reflux, eye drops, and topical medications, including topical steroids, topical antibiotics, and topical antifungal agents.

Sero- OR sero+ for RSV antibody, defined by serum RSV antibody titer assay not more than 30 days prior to vaccination.

Participant is expected to be available for the duration of the trial.

The LAR confirms that subject has received routine immunizations appropriate for age based on the current Advisory Committee on Immunization Practices (ACIP) Recommended Immunization Schedule for Children and Adolescents Aged 18 Years or Younger.

Growing normally for age as demonstrated on a World Health Organization (WHO) growth chart, AND

If <1 year of age: has a current height and weight above the 5th percentile for age.

If ≥1 year of age: has a current height and weight above the 3rd percentile for age.

Subject Exclusion Criteria

<8 months of age and >60 months of age at the time of planned vaccine inoculation.

Born at less than 34 weeks gestation for subjects ≥ 1 year of age at enrollment

Born at less than 37 weeks gestation, and at the date of inoculation less than 1 year of age.

Maternal history of a positive HIV test before or during pregnancy.

Maternal history of illicit drug abuse or alcohol abuse.

Evidence of chronic disease except for chronic diseases that are mild, stable and not immune compromising or require recent change (< 60 days) in management (e.g., mild stable eczema, mild allergic rhinitis)

Clinically significant pulmonary, cardiovascular, hepatic or renal functional abnormality as determined by medical history or physical exam. Abnormal pulse oximetry testing during screening for undetected critical congenital heart disease or concern for such by medical history or physical exam.

Acute or chronic medical condition or laboratory abnormality that may increase the risk of study participation or, in the investigator's judgement, make the participant inappropriate for the study.

History of severe infection (e.g., requiring hospitalization).

Known or suspected impairment of immunological functions, bone marrow/solid organ transplant recipients.

Receiving immunosuppressive therapy including systemic corticosteroids.

Major congenital malformations, including congenital cleft palate or cytogenetic abnormalities.

Suspected or documented developmental disorder, delay, or other developmental problem.

Cardiac abnormality requiring treatment. Participants with clinically insignificant cardiac abnormalities (e.g., clinically insignificant patent foramen ovale) requiring no treatment may be enrolled.

Lung disease or reactive airway disease.

History of wheezing episode/s or receipt of bronchodilator therapy

Previous receipt of supplemental oxygen therapy in a home setting.

History of severe RSV infection or severe respiratory virus infection (e.g., requiring hospitalization).

Previous immunization with an investigational RSV vaccine.

Previous or planned administration of any anti-RSV antibody product within 6 months of receipt of study vaccine.

Previous receipt of immunoglobulin or any other antibody products within the past 6 months.

Previous receipt of any blood products within the past 6 months.

Previous anaphylactic reaction.

Previous serious vaccine-associated adverse reaction or one that was Grade 3 or above.

Known hypersensitivity to any study vaccine product component.

Household contact with any of the following groups of individuals for the period up to 28 days after vaccination (including after each dose for cohorts receiving two doses of vaccine):

Member of a household that contains an infant who is less than 6 months of age at the date of inoculation through the 28th day after inoculation. In groups assigned to two doses of vaccine, to include date of inoculation through the 28th day after the second inoculation.

Pregnant woman.

Persons with hospitalization for asthma or other chronic respiratory disease in the past 5 years.

Member of a household that, at the date of inoculation through the 28th day after inoculation (including second dose if scheduled), contains an immunocompromised individual including but not limited to:

A person who is HIV-infected.

A person who has cancer and has received chemotherapy within the 12 months prior to enrollment.

A person with a solid organ or bone marrow transplant.

A person currently receiving immunosuppressive agents.

Attends a daycare facility that does not separate children by age and contains an infant

<6 months of age at the date of inoculation through the 28th day after inoculation.

Neurological and neurodevelopmental conditions (e.g., cerebral palsy, epilepsy, stroke, seizures).

History of postinfectious or postvaccine neurological sequelae.

Autoimmune, inflammatory, vascular, or rheumatic disease.

Household contact of another child enrolled into the trial.

Inadequate venous access for repeated phlebotomy.

Subject's LAR/s who, in the opinion of the site investigator, are not suitable participants for the study, for any reason not previously delineated, including subjects with any condition that would in the opinion of the site investigator place the subject at unacceptable risk of injury or render the subject unable to meet the requirements of the protocol.

Subjects testing positive for infection with RSV, Influenza, or SARS-CoV-2 in the 3 months prior to enrollment.

Planned receipt of any of the following prior to planned trial vaccine receipt (Day 1 and Day 57 for group receiving 2 doses of vaccine):

Inactivated influenza vaccine within 14 days prior, or

Any other inactivated vaccine or live-attenuated rotavirus vaccine within the 14 days prior, or

Any live vaccine, other than rotavirus vaccine, within the 28 days prior, or

Another investigational vaccine or investigational drug within 28 days prior.

Salicylate (aspirin) or salicylate-containing products within 28 days prior.

Planned receipt of any of the following after planned trial vaccine receipt (Day 1 and Day 57 for groups receiving 2 doses of vaccine):

Inactivated vaccine or live-attenuated rotavirus vaccine within the 14 days after, or

Any live vaccine other than rotavirus in the 28 days after, or

Another investigational vaccine or investigational drug in the 56 days after.

Planned receipt of any of the following medications within 7 days of trial enrollment and 7 days after trial vaccine (Day 1 and also Day 57 for groups receiving 2 doses of vaccine):

Systemic antibacterial, antiviral, antifungal, anti-parasitic, or antituberculous agents, whether for treatment or prophylaxis, or systemic or nasal steroid therapy for acute illness.

Any other intranasal medications, or

Other prescription medications except permitted concomitant medications. Permitted concomitant medications (prescription or non-prescription) include nutritional supplements, medications for gastroesophageal reflux, eye drops, and topical medications, including (but not limited to) cutaneous (topical) steroids, topical antibiotics, and topical antifungal agents.

History of bleeding disorder or significant problem with bleeding

American Indian or Alaska Native Infants/Children (high risk for severe RSV infection) AND eligible to receive nirsevimab

Temporary exclusion criteria for sero+ children, sero- children, and infants:

The following are temporary or self-limiting conditions, and once resolved, the subject may be enrolled, if otherwise eligible. If the period of temporary exclusion is greater than 30 days, sero- children will need to be rescreened for levels of RSV neutralizing antibody.

Any of the following events at the time of enrollment:

Fever (temperature of ≥100.4°F per site standard based on age; e.g., oral for older children, rectal for infants, axillary screening), or

Upper respiratory signs or symptoms (rhinorrhea, cough, or pharyngitis) or

Nasal congestion significant enough to interfere with successful vaccination.

Otitis media.

Contact with a person diagnosed with RSV, Influenza, coronavirus disease-2 (COVID- 19) or other viral respiratory illnesses within the preceding 10 days.

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Primärt syfte: Förebyggande
  • Tilldelning: Randomiserad
  • Interventionsmodell: Sekventiell tilldelning
  • Maskning: Fyrdubbla

Vapen och interventioner

Deltagargrupp / Arm
Intervention / Behandling
Experimentell: Group 1, infants (age 18-59 months), RSV+, BLB201 10^6 PFU

6 RSV seropositive participants will be administered 10^6 PFU BLB-201 by intranasal route on Day 1

BLB201 10^6 PFU

Placebo-jämförare: Group 1, infants (age 18-59 months), RSV+, Placebo

4 RSV seropositive participants will be administered placebo by intranasal route on Day 1

The placebo used for the trial will be the same as the diluent (0.9% sterile saline) used for the low dose group (10^6 PFU).

Experimentell: Group 2, infants (age 18-59 months), RSV+, BLB201 10^7 PFU

6 RSV seropositive participants will be administered 10^7 PFU BLB-201 by intranasal route on Day 1

BLB201 10^7 PFU

Placebo-jämförare: Group 2, infants (age 18-59 months), RSV+, Placebo

4 RSV seropositive participants will be administered placebo by intranasal route on Day 1

The placebo used for the trial will be the same as the diluent (0.9% sterile saline) used for the low dose group (10^6 PFU).

Experimentell: Group 3, children (age 8-24 months), RSV+ or RSV-, BLB201 10^6 PFU

16 participants will be administered BLB201 10^6 PFU by intranasal route on Day 1

BLB201 10^6 PFU

Placebo-jämförare: Group 3, children (age 8-24 months), RSV+ or RSV-, Placebo

8 participants will be administered placebo by intranasal route on Day 1

The placebo used for the trial will be the same as the diluent (0.9% sterile saline) used for the low dose group (10^6 PFU).

Experimentell: Group 4, children (age 6-24 months), RSV+ or RSV-, BLB201 10^7 PFU

32 participants will be administered BLB201 10^7 PFU by intranasal route on Day 1

BLB201 10^7 PFU

Aktiv komparator: Group 4, children (age 8-24 months), RSV+ or RSV-, Placebo

16 participants will be administered placebo by intranasal route on Day 1

The placebo used for the trial will be the same as the diluent (0.9% sterile saline) used for the low dose group (10^6 PFU).

Experimentell: Group 6, children (age 8-24 months), RSV+ or RSV-, BLB201 10^7 PFU

30 participants will be administered BLB201 10^7 PFU by intranasal route on Day 1 and Day 57

BLB201 10^7 PFU

Placebo-jämförare: Group 6, children (age 8-24 months), RSV+ or RSV-, Placebo

15 participants will be administered Placebo by intranasal route on Day 1 and Day 57

The placebo used for the trial will be the same as the diluent (0.9% sterile saline) used for the low dose group (10^6 PFU).

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Solicited Adverse Events
Tidsram: Day 1-15

Frequencies and grades of solicited local and systemic AEs during a 14-day period after dosing.

Day 1-15
Unsolicited Adverse Events
Tidsram: Day 1-29

Frequencies and grades of unsolicited AEs during a 28-day period after dosing.

Day 1-29

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Faktisk)

9 mars 2023

Primärt slutförande (Beräknad)

30 december 2028

Avslutad studie (Beräknad)

30 december 2028

Studieregistreringsdatum

Först inskickad

8 december 2022

Först inskickad som uppfyllde QC-kriterierna

8 december 2022

Första postat (Faktisk)

19 december 2022

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

21 oktober 2026

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

20 oktober 2026

Senast verifierad

1 oktober 2026

Mer information

Termer relaterade till denna studie

Plan för individuella deltagardata (IPD)

Planerar du att dela individuella deltagardata (IPD)?

JA

IPD-planbeskrivning

De-identified IPD underlying the results reported in any published articles (text, tables, figures, appendices) will be shared.

Tidsram för IPD-delning

5 years, beginning as soon as possible (but no later than 12 months) after article publication.

Kriterier för IPD Sharing Access

Data will be made available to investigators and institutions upon request. Requests should be directed to the Blue Lake Biotechnology Inc authors of the publication(s).

IPD-delning som stöder informationstyp

  • STUDY_PROTOCOL

Läkemedels- och apparatinformation, studiedokument

Studerar en amerikansk FDA-reglerad läkemedelsprodukt

Ja

Studerar en amerikansk FDA-reglerad produktprodukt

Nej

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