Cross-neutralization Capacity of Immune Serum From Different Dosage of Sabin Inactivated Poliovirus Vaccine Immunization
2. november 2020 oppdatert av: Sinovac Biotech Co., Ltd
Cross-neutralization Capacity of Immune Serum From Different Dosage of Sabin Inactivated Poliovirus Vaccine Immunization Against Multiple Individual Wild and Vaccine-derived Polioviruses, Supplementary Study of a Phase 2 Clinical Trial.
This study is a supplementary study of an already finished randomised, double-blinded, and placebo controlled phase 2 clinical trial of an Sabin strain inactivated poliovirus vaccine (sIPV) manufactured by Sinovac Biotech Ltd., Beijing China.
The purpose of this study is to evaluate the cross-neutralization capacity of the serum immuned by the investigational sIPV against 10 individual virus strains.
Studieoversikt
Status
Fullført
Forhold
Intervensjon / Behandling
- Biologisk: Three doses of low-dosage investigational sIPV, vaccinated within one-month interval between doses
- Biologisk: Three doses of medium-dosage investigational sIPV, vaccinated within one-month interval between doses
- Biologisk: Three doses of high-dosage investigational sIPV, vaccinated within one-month interval between doses
- Biologisk: Three doses of control wIPV, vaccinated within one-month interval between doses
- Biologisk: Three doses of control sIPV, vaccinated within one-month interval between doses
Detaljert beskrivelse
This study is a open-labelled study conducted based on an already finished phase 2 study of the investigational sIPV in 600 healthy infants aged 2-months old. The purpose of this study is to evaluate the cross-neutralization capacity of the serum immuned by the investigational sIPV against 10 individual virus strains. Paired pre-immune and post-immune serum from 250 participants of the phase 2 trial, with 50 in each group including the low-, medium- and high- dosage group, control wild poliovirus vaccine (wIPV) group and control sIPV group, was selected and sent to China Center for Disease Control and Prevention (CDC) for the cross-neutralization assay to determine the neutralizing antibody titer against 10 individual virus strains including Sabin strains (type 1, 2, and 3), Salk strains (Mahoney, MEF-1, and Saukett), cVDPV (type 1, 2, and 3) and Xinjiang wild strain of type 1(Xinjiang wIPV1).
All the subjects in this study had been vaccinated at the schedule of month 0,1, and 2 in the phase 2 clinical trial.
Studietype
Intervensjonell
Registrering (Faktiske)
250
Fase
- Ikke aktuelt
Kontakter og plasseringer
Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.
Studiesteder
-
-
Jiangsu
-
Pizhou, Jiangsu, Kina, 221300
- Pizhou Center for Disease Control and Prevention
-
-
Deltakelseskriterier
Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
2 måneder til 2 måneder (Barn)
Tar imot friske frivillige
Ja
Kjønn som er kvalifisert for studier
Alle
Beskrivelse
Inclusion Criteria:
- Participants of the already finished phase 2 clinical trial;
- Subjects who received the three-doses full schedule vaccination required in the phase 2 tril and can provide the backup paired pre-immune and post-immune serum collected in the phase trial;
- Provide written informed consent.
Exclusion Criteria:
- None.
Studieplan
Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Forebygging
- Tildeling: Randomisert
- Intervensjonsmodell: Parallell tildeling
- Masking: Ingen (Open Label)
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
|---|---|
|
Eksperimentell: Low-dosage experimental group
Three doses of low-dosage investigational sIPV, vaccinated within one-month interval between doses
|
Antigen content: 7.5, 22.5, and 22.5 D-antigen unite for type 1, 2, and 3 in 0.5 ml diluent per dose
|
|
Eksperimentell: Medium-dosage experimental group
Three doses of medium-dosage investigational sIPV, vaccinated within one-month interval between doses
|
Antigen content: 15, 45, and 45 D-antigen unite for type 1, 2, and 3 in 0.5 ml diluent per dose
|
|
Eksperimentell: High-dosage experimental group
Three doses of high-dosage investigational sIPV, vaccinated within one-month interval between doses
|
Antigen content: 22.5, 67.5, and 67.5 D-antigen unite for type 1, 2, and 3 in 0.5 ml diluent per dose
|
|
Aktiv komparator: Control wIPV group
Three doses of control wIPV, vaccinated within one-month interval between doses
|
Antigen content: 40, 8, and 32 D-antigen unite for type 1, 2, and 3 in 0.5 ml diluent per dose
|
|
Aktiv komparator: Control sIPV group
Three doses of control sIPV, vaccinated within one-month interval between doses
|
Antigen content: 30, 32, and 45 D-antigen unite for type 1, 2, and 3 in 0.5 ml diluent per dose
|
Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
Immunity index of seroconversion rate
Tidsramme: One month after three doses of vaccination
|
The seroconversion rates of neutralizing antibody against 10 individual virus strains (Sabin 1, Sabin2， Sabin 3, Mahoney 1, MEF-1, Saukett, cVDPV1, cVDPV2, cVDPV3, and Xinjiang wIPV1)
|
One month after three doses of vaccination
|
Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
Immunity index of geometric mean titer (GMT)
Tidsramme: One month after three doses of vaccination
|
The GMT of neutralizing antibody against 10 individual virus strains (Sabin 1, Sabin2， Sabin 3, Mahoney 1, MEF-1, Saukett, cVDPV1, cVDPV2, cVDPV3, and Xinjiang wIPV1)
|
One month after three doses of vaccination
|
|
Immunity index of geometric mean ratio (GMR)
Tidsramme: One month after three doses of vaccination
|
The GMR of neutralizing antibody against 10 individual virus strains (Sabin 1, Sabin2， Sabin 3, Mahoney 1, MEF-1, Saukett, cVDPV1, cVDPV2, cVDPV3, and Xinjiang wIPV1)
|
One month after three doses of vaccination
|
|
Immunity index of seropositivity rate
Tidsramme: One month after three doses of vaccination
|
The seropositivity rate of neutralizing antibody against 10 individual virus strains (Sabin 1, Sabin2， Sabin 3, Mahoney 1, MEF-1, Saukett, cVDPV1, cVDPV2, cVDPV3, and Xinjiang wIPV1)
|
One month after three doses of vaccination
|
Samarbeidspartnere og etterforskere
Det er her du vil finne personer og organisasjoner som er involvert i denne studien.
Sponsor
Etterforskere
- Hovedetterforsker: Yuemei Hu, Bachelor, Jiangsu Provincial Center for Disease Control and Prevention
Studierekorddatoer
Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.
Studer hoveddatoer
Studiestart (Faktiske)
20. juli 2019
Primær fullføring (Faktiske)
10. desember 2019
Studiet fullført (Faktiske)
10. januar 2020
Datoer for studieregistrering
Først innsendt
2. november 2020
Først innsendt som oppfylte QC-kriteriene
2. november 2020
Først lagt ut (Faktiske)
6. november 2020
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
6. november 2020
Siste oppdatering sendt inn som oppfylte QC-kriteriene
2. november 2020
Sist bekreftet
1. november 2020
Mer informasjon
Begreper knyttet til denne studien
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- PRO-sIPV-1001-1
Plan for individuelle deltakerdata (IPD)
Planlegger du å dele individuelle deltakerdata (IPD)?
NEI
Legemiddel- og utstyrsinformasjon, studiedokumenter
Studerer et amerikansk FDA-regulert medikamentprodukt
Nei
Studerer et amerikansk FDA-regulert enhetsprodukt
Nei
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