En dosisrespons fase 2 klinisk undersøgelse af VLA1553 hos raske børn i alderen 1 til 11 år
Et randomiseret, observatør-blindet, dosisrespons fase 2-studie for at vurdere sikkerheden og immunogeniciteten af to forskellige dosisniveauer af en levende svækket Chikungunya-virusvaccinekandidat (VLA1553) hos raske børn i alderen 1 til 11 år
Dette er en multicenter, prospektiv, randomiseret, observatør-blindet, tre-arm, fase 2 klinisk undersøgelse, der evaluerer fuld dosis formulering af VLA1553, halv dosis formulering af VLA1553 og kontrol.
Mindst 300 raske mandlige og kvindelige børn i alderen 1 til 11 år vil blive tilmeldt, og den samlede fordeling af deltagere vil være 2:2:1 til de to VLA1553-dosisgrupper (n=120 hver) eller kontrol (n=60).
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Dette er et multicenter, prospektivt, randomiseret, observatørblindet, tre-arms, fase 2 klinisk studie, der evaluerer fulddosisformuleringen af VLA1553, halvdosisformuleringen af VLA1553 og kontrol (Nimenrix, en tetravalent meningokokvaccine - Men ACWY).
Mindst 300 mandlige og kvindelige raske børn i alderen 1 til 11 år vil blive tilmeldt, og den samlede fordeling af deltagere vil være 2:2:1 til de to VLA1553 dosisgrupper (n=120 hver) eller kontrol (Nimenrix) (n=60 ).
Som en sikkerhedsforanstaltning vil de første 30 sentinel-deltagere blive tilmeldt undersøgelsen på en åben-label måde i henhold til en alderstrinsordning.
Efter sentinelanalyse vil deltagerne blive indskrevet på en blindet, randomiseret måde i tre undersøgelsesarme. Inden for hver behandlingsarm vil deltagerne blive stratificeret i tre alderslag:
Stratum A: 7 til 11 år -børn fra deres 7 års fødselsdag til dagen før deres 12 års fødselsdag.
Stratum B: 3 til 6 år - børn fra deres 3 års fødselsdag til dagen før deres 7 års fødselsdag.
Stratum C: 1 til 2 år - børn fra deres 1 års fødselsdag til dagen før deres 3 års fødselsdag.
Aldersstrata for VLA1553-behandlingsarmene er målrettet til at være lige store, dvs. ca. 40 pr. aldersstratum.
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Fase 2
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Valneva Clinical Development
- Telefonnummer: +4 1 206 20
- E-mail: office@valneva.com
Studiesteder
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Santo Domingo, Dominikanske republik, 10306
- Instituto Dermatologico y Cirugia de la Piel "Dr Huberto Bogaert Diaz" IDCP
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Gazcue
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Santo Domingo, Gazcue, Dominikanske republik
- Fundacion Dominicana de Perinatologia Fundacion Probebe
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Tegucigalpa, Honduras
- Inversiones en Investigacion Medica INVERIME
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Barn
Tager imod sunde frivillige
Beskrivelse
Inklusionskriterier:
- Sunde mandlige eller kvindelige børn i alderen 7 til 11 år12 for Stratum A, 3 til 6 år13 for Stratum B og 1 til 2 år14 for Stratum C på vaccinationstidspunktet;
- Skriftligt informeret samtykke fra deltagerens forælder(e)/Juridisk acceptable repræsentant(er) ((LAR(s)), i henhold til lokale krav, og skriftlig informeret samtykke fra deltageren, hvis det er relevant;
Ekskluderingskriterier:
- Deltager, der er IgM+/IgG-, kvalificerer sig ikke til deltagelse i denne undersøgelse.
- Deltageren tager medicin eller anden behandling for uløste symptomer, der tilskrives en tidligere CHIKV-infektion; eller har deltaget i et klinisk studie, der involverer en CHIKV-undersøgelsesvaccine;
- Deltageren har en akut eller nylig infektion (og som ikke er symptomfri i ugen før screeningsbesøget (besøg 0)
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Forebyggelse
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Firedobbelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
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Eksperimentel: VLA1553 fuld dosis
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Enkelt intramuskulær vaccination på dag 1 med fuld dosis VLA1553, en frysetørret levende svækket Chikungunya-vaccinekandidat
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Eksperimentel: VLA1553 halv dosis
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Enkelt intramuskulær vaccination på dag 1 med VLA1553 halv dosis, en lyofiliseret levende svækket Chikungunya vaccinekandidat
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Aktiv komparator: Styring
Enkelt intramuskulær vaccination på dag 1 med Nimenrix (Men ACWY-vaccine), en konjugatvaccine indiceret til den aktive immunisering
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Nimenrix
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Number of Participants With Solicited Injection Site Reactions
Tidsramme: within 14 days post-vaccination
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Frequency and severity of solicited injection site and solicited systemic reactions within 14 days post-vaccination.
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within 14 days post-vaccination
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Severity of Solicited Injection Site Reactions
Tidsramme: within 14 days post-vaccination
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within 14 days post-vaccination
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Number of Participants With Solicited Systemic Reactions
Tidsramme: within 14 days post-vaccination
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within 14 days post-vaccination
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Severity of Solicited Systemic Reactions
Tidsramme: within 14 days post-vaccination
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within 14 days post-vaccination
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Number of Participants With Any Adverse Event (AE)
Tidsramme: within 28 days post-vaccination
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within 28 days post-vaccination
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Severity of Any Adverse Event (AE)
Tidsramme: within 28 days post-vaccination
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In the Outcome measure "Severity of any AE", subjects may be represented in more than one AE category.
Therefore, the total number of subjects with any AE may be lower than the sum of the numbers of subjects in the individual AE categories (solicited / unsolicited AE).
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within 28 days post-vaccination
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Number of Participants With of Unsolicited AE
Tidsramme: until Month 6 (Day 180) and Month 12 (Day 365) post-vaccination
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until Month 6 (Day 180) and Month 12 (Day 365) post-vaccination
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Severity of Unsolicited AE
Tidsramme: until Month 6 (Day 180) and Month 12 (Day 365) post-vaccination
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until Month 6 (Day 180) and Month 12 (Day 365) post-vaccination
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Number of Participants With Any Serious Adverse Event (SAE)
Tidsramme: until Month 6 (Day 180) and Month 12 (Day 365) post-vaccination
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until Month 6 (Day 180) and Month 12 (Day 365) post-vaccination
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Number of Participants With Any Early Onset Adverse Event of Special Interest (AESI)
Tidsramme: 2 to 21 days post-vaccination
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Early onset AESI were defined as:
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2 to 21 days post-vaccination
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Severity of Any Early Onset Adverse Event of Special Interest (AESI)
Tidsramme: 2 to 21 days post-vaccination
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2 to 21 days post-vaccination
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Number of Participants With Any Late Onset Adverse Event of Special Interest (AESI)
Tidsramme: Starting 22 days post-vaccination until end of trial, 12 months post-vaccination
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Starting 22 days post-vaccination until end of trial, 12 months post-vaccination
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Severity of Any Late Onset Adverse Event of Special Interest (AESI)
Tidsramme: Starting 22 days post-vaccination until end of trial, 12 months post-vaccination
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Starting 22 days post-vaccination until end of trial, 12 months post-vaccination
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Assessment of Viremia on Days 1, 4, 8 and 15
Tidsramme: on Days 1, 4, 8 and 15 and beyond as applicable
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Number of participants with viremic results, including quantifiable results and results below LLOQ, by visit and by pooled trial arm. Day 29 was only tested, if Day 15 was tested positive. Viremia is measured in genome copy equivalents per milliliter (GCE/mL). All quantifiable results and results below LLOQ (< 3214.4 GCE/mL), but above the LOD, are considered "viremic". A result of "not detected" or below LOD (<1071,4 GCE/mL) is included as "non-viremic". |
on Days 1, 4, 8 and 15 and beyond as applicable
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Immune Response in Baseline Seronegative Participants as Measured by CHIKV-specific Neutralizing Antibody Titers
Tidsramme: on Day 1, Day 15, Day 29, Day 85, Day 180 and Month 12 post-vaccination
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Immune Response provided by Geometric Mean Titers (GMTs) in Baseline Seronegative Participants pooled by Trial Arm up to 12 months post vaccination.
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on Day 1, Day 15, Day 29, Day 85, Day 180 and Month 12 post-vaccination
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Immune Response as Measured by CHIKV-specific Neutralizing Antibody Titers by Age Group and Trial Arm.
Tidsramme: on Day 1, Day 15, Day 29, Day 85, Day 180 and Month 12 post-vaccination
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Immune Response provided by Geometric Mean Titers (GMTs) by Visit, by Age Group and Trial Arm up to 12 months post vaccination.
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on Day 1, Day 15, Day 29, Day 85, Day 180 and Month 12 post-vaccination
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Immune Response Measured by CHIKV-specific Neutralizing Antibody Titers Pooled by Dose
Tidsramme: on Day 1, Day 15, Day 29, Day 85, Day 180 and Month 12 post-vaccination
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Immune Response provided by Geometric Mean Titers (GMTs) by Visit, pooled by Trial Arm up to 12 months post vaccination.
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on Day 1, Day 15, Day 29, Day 85, Day 180 and Month 12 post-vaccination
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Percentage of Participants Seronegative at Baseline With Seroconversion as Compared to Baseline
Tidsramme: at Day 15, Day 29, Day 85, Day 180 and Month 12
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Percentage of participants seronegative at baseline with Seroconversion (defined as >4-fold titer change compared to baseline) by Visit Pooled by Trial Arm
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at Day 15, Day 29, Day 85, Day 180 and Month 12
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Percentage of Participants Seropositive at Baseline With Seroconversion as Compared to Baseline
Tidsramme: at Day 15, Day 29, Day 85, Day 180 and Month 12
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Percentage of participants seropositive at baseline with Seroconversion (defined as >4-fold titer change compared to baseline) by Visit Pooled by Trial Arm.
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at Day 15, Day 29, Day 85, Day 180 and Month 12
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Percentage of Participants With Seroconversion as Compared to Baseline Stratified by Age Stratum
Tidsramme: at Day 15, Day 29, Day 85, Day 180 and Month 12
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Percentage of participants with Seroconversion (defined as >4-fold titer change compared to baseline) by Visit by Age Group and Trial Arm.
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at Day 15, Day 29, Day 85, Day 180 and Month 12
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Percentage of Participants With Seroconversion as Compared to Baseline by Dose
Tidsramme: at Day 15, Day 29, Day 85, Day 180 and Month 12
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Percentage of participants with Seroconversion (defined as >4-fold titer change compared to baseline) by Visit Pooled by Trial Arm
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at Day 15, Day 29, Day 85, Day 180 and Month 12
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Percentage of Participants Seronegative at Baseline With a Seroresponse (Defined as PRNT50 ≥150 for Baseline Negative Participants) by Dose
Tidsramme: on Day 15, Day 29, Day 85, Day 180 and Month 12 post-vaccination
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Percentage of Participants with Seroresponse for CHIKV-Specific Neutralizing Antibody Titers (defined as PRNT50 ≥150) by Visit Pooled by Trial Arm.
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on Day 15, Day 29, Day 85, Day 180 and Month 12 post-vaccination
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Percentage of Participants With a Seroresponse Stratified by Age Stratum
Tidsramme: on Day 15, Day 29, Day 85, Day 180 and Month 12 post-vaccination
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Percentage of Participants with Seroresponse for CHIKV-Specific Neutralizing Antibody Titers (defined as PRNT50 ≥150) by Visit by Age Group and Trial Arm.
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on Day 15, Day 29, Day 85, Day 180 and Month 12 post-vaccination
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Percentage of Participants With a Seroresponse Stratified by Dose
Tidsramme: on Day 15, Day 29, Day 85, Day 180 and Month 12 post-vaccination
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Percentage of Participants with Seroresponse for CHIKV-Specific Neutralizing Antibody Titers (defined as PRNT50 ≥150) by Visit Pooled by Trial Arm.
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on Day 15, Day 29, Day 85, Day 180 and Month 12 post-vaccination
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Fold Change of CHIKV-specific Neutralizing Antibody Titers as Compared to Baseline in Participants Seronegative at Baseline
Tidsramme: at Days 15, 29, 85, 180 and at Month 12 post-vaccination
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Fold Change for CHIKV-Specific Neutralizing Antibody Titers in seronegative Participants by Visit Pooled by Trial Arm.
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at Days 15, 29, 85, 180 and at Month 12 post-vaccination
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Fold Change of CHIKV-specific Neutralizing Antibody Titers as Compared to Baseline in Seropositive Participants
Tidsramme: at Days 15, 29, 85, 180 and at Month 12 post-vaccination
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Fold Change for CHIKV-Specific Neutralizing Antibody Titers in seropositive Participants by Visit Pooled by Trial Arm.
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at Days 15, 29, 85, 180 and at Month 12 post-vaccination
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Fold Change of CHIKV-specific Neutralizing Antibody Titers as Compared to Baseline Stratified by Age Stratum
Tidsramme: at Days 15, 29, 85, 180 and at Month 12 post-vaccination
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Fold Change for CHIKV-Specific Neutralizing Antibody Titers by Visit by Age Group and Trial Arm.
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at Days 15, 29, 85, 180 and at Month 12 post-vaccination
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Fold Change of CHIKV-specific Neutralizing Antibody Titers as Compared to Baseline Stratified by Dose
Tidsramme: at Days 15, 29, 85, 180 and at Month 12 post-vaccination
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Fold Change for CHIKV-Specific Neutralizing Antibody Titers by Visit Pooled by Trial Arm.
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at Days 15, 29, 85, 180 and at Month 12 post-vaccination
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Percentage of Participants Seronegative at Baseline Reaching an at Least 4-fold, 8-fold, 16-fold or 64-fold Change in CHIKV-specific Neutralizing Antibody Titers Compared to Baseline
Tidsramme: at Day 15, Day 29, Day 85, Day 180 and Month 12
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Percentage of Participants Reaching a 4-/8-/16-/64-Fold Change in Titers by Visit Pooled by Trial Arm.
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at Day 15, Day 29, Day 85, Day 180 and Month 12
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Percentage of Participants Reaching an at Least 4-fold, 8-fold, 16-fold or 64-fold Change in CHIKV-specific Neutralizing Antibody Titers Compared to Baseline Stratified by Age Stratum
Tidsramme: at Day 15, Day 29, Day 85, Day 180 and Month 12
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Percentage of Participants Reaching a 4-/8-/16-/64-Fold Change in Titers by Visit by Age Group and Trial Arm.
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at Day 15, Day 29, Day 85, Day 180 and Month 12
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Percentage of Participants Reaching an at Least 4-fold, 8-fold, 16-fold or 64-fold Change in CHIKV-specific Neutralizing Antibody Titers Compared to Baseline by Dose
Tidsramme: at Day 15, Day 29, Day 85, Day 180 and Month 12
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Percentage of Participants Reaching a 4-/8-/16-/64-Fold Change in Titers by Visit Pooled by Trial Arm.
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at Day 15, Day 29, Day 85, Day 180 and Month 12
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Efterforskere
Efterforskere
- Studiestol: Valneva Clinical Development, Valneva Austria GmbH
Publikationer og nyttige links
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- VLA1553-221
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
IPD-planbeskrivelse
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
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