- ICH GCP
- US Clinical Trials Registry
- Klinisk utprøving NCT06106581
En doserespons fase 2 klinisk studie av VLA1553 hos friske barn i alderen 1 til 11 år
En randomisert, observatør-blind, doserespons fase 2-studie for å vurdere sikkerheten og immunogenisiteten til to forskjellige dosenivåer av en levende svekket Chikungunya-virusvaksinekandidat (VLA1553) hos friske barn i alderen 1 til 11 år
Dette er en multisenter, prospektiv, randomisert, observatørblind, tre-arms, fase 2 klinisk studie som evaluerer fulldoseformuleringen av VLA1553, halvdoseformuleringen av VLA1553 og kontroll.
Minst 300 mannlige og kvinnelige friske barn i alderen 1 til 11 år vil bli registrert og den totale fordelingen av deltakerne vil være 2:2:1 til de to VLA1553-dosegruppene (n=120 hver) eller kontroll (n=60).
Studieoversikt
Status
Forhold
Intervensjon / Behandling
Detaljert beskrivelse
Dette er en multisenter, prospektiv, randomisert, observatørblind, trearms, fase 2 klinisk studie som evaluerer fulldoseformuleringen av VLA1553, halvdoseformuleringen av VLA1553 og kontroll (Nimenrix, en tetravalent meningokokkvaksine – Men ACWY).
Minst 300 mannlige og kvinnelige friske barn i alderen 1 til 11 år vil bli registrert, og den totale fordelingen av deltakerne vil være 2:2:1 til de to dosegruppene VLA1553 (n=120 hver) eller kontroll (Nimenrix) (n=60 ).
Som et sikkerhetstiltak vil de første 30 sentinel-deltakerne bli registrert i studien på en åpen måte i henhold til en aldersreduksjonsordning.
Etter sentinelanalyse vil deltakerne bli registrert på en blindet, randomisert måte i tre studiearmer. Innenfor hver behandlingsarm vil deltakerne bli stratifisert i tre aldersstrata:
Stratum A: 7 til 11 år -barn fra 7-årsdagen til dagen før 12-årsdagen.
Stratum B: 3 til 6 år - barn fra 3-årsdagen til dagen før 7-årsdagen.
Stratum C: 1 til 2 år - barn fra 1-årsdagen til dagen før 3-årsdagen.
Aldersstrata for VLA1553-behandlingsarmene er målrettet til å være like store, dvs. omtrent 40 per aldersstratum.
Studietype
Registrering (Faktiske)
Fase
- Fase 2
Kontakter og plasseringer
Studiesteder
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Santo Domingo, Den dominikanske republikk, 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, Den dominikanske republikk
- Fundacion Dominicana de Perinatologia Fundacion Probebe
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Tegucigalpa, Honduras
- Inversiones en Investigacion Medica INVERIME
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Deltakelseskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
- Barn
Tar imot friske frivillige
Beskrivelse
Inklusjonskriterier:
- Mannlige eller kvinnelige friske barn i alderen 7 til 11 år12 for lag A, 3 til 6 år13 for lag B og 1 til 2 år14 for lag C på vaksinasjonstidspunktet;
- Skriftlig informert samtykke fra deltakerens foreldre/Juridisk akseptable representant(er) ((LAR(e)), i henhold til lokale krav, og skriftlig informert samtykke fra deltakeren, hvis aktuelt;
Ekskluderingskriterier:
- Deltaker som er IgM+/IgG- kvalifiserer ikke for deltakelse i denne studien.
- Deltakeren tar medisiner eller annen behandling for uløste symptomer som skyldes en tidligere CHIKV-infeksjon; eller har deltatt i en klinisk studie som involverer en utprøvende CHIKV-vaksine;
- Deltakeren har en akutt eller nylig infeksjon (og som ikke er symptomfri i uken før screeningbesøket (besøk 0)
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Forebygging
- Tildeling: Randomisert
- Intervensjonsmodell: Parallell tildeling
- Masking: Firemannsrom
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
|---|---|
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Eksperimentell: VLA1553 full dose
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Enkel intramuskulær vaksinasjon på dag 1 med VLA1553 full dose, en lyofilisert levende svekket Chikungunya-vaksinkandidat
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Eksperimentell: VLA1553 halv dose
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Enkel intramuskulær vaksinasjon på dag 1 med VLA1553 halv dose, en frysetørket levende svekket Chikungunya-vaksinkandidat
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Aktiv komparator: Kontroll
Enkel intramuskulær vaksinasjon på dag 1 med Nimenrix (Men ACWY-vaksine), en konjugatvaksine indisert for aktiv immunisering
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Nimenrix
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Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
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
Resultatmål |
Tiltaksbeskrivelse |
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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Samarbeidspartnere og etterforskere
Sponsor
Etterforskere
- Studiestol: Valneva Clinical Development, Valneva Austria GmbH
Publikasjoner og nyttige lenker
Studierekorddatoer
Studer hoveddatoer
Studiestart (Faktiske)
Primær fullføring (Faktiske)
Studiet fullført (Faktiske)
Datoer for studieregistrering
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Faktiske)
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- VLA1553-221
Plan for individuelle deltakerdata (IPD)
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IPD-planbeskrivelse
Legemiddel- og utstyrsinformasjon, studiedokumenter
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