Clinical trial NCT04264546: Safety and Immunogenicity of a Sabin Inactivated Poliovirus Vaccine (Phase Ib)
Official title: A Phase Ib Study to Evaluate the Safety and Immunogenicity of a Sabin Inactivated Poliovirus Vaccine (Vero Cell)
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE1
PHASE2
Conditions: Polio
Lead sponsor: Jiangsu Province Centers for Disease Control and Prevention
Sponsor class: NETWORK
First posted: 2020-02-11
Enrollment: 60
Sex: ALL
Minimum age (years): 60
Maximum age (years): 45
Standard ages: CHILD
ADULT
Accepts healthy volunteers: yes
Allocation: NON_RANDOMIZED
Intervention model: SINGLE_GROUP
Primary purpose: PREVENTION

Brief summary: The purpose of this phase Ib study is to evaluate the safety of a Sabin Inactivated Poliovirus Vaccine (sIPV) in adults and children, and the safety and immunogenicity of it in infants. 20 adults aged 18\~45 years and 20 children aged 4 years were only administered one dose of sIPV with high D antigen content. 20 infants aged 2 months (60\~90 days) were administered three doses of sIPV with high D antigen content, on the month 0, 1, 2 schedule. Serum samples were collected before the 1st dose and 30 days after the 3rd dose vaccination to assess the immunogenicity in infants. Adverse events occurring within 30 days after each dose were collected to assess the safety.

Detailed description: The purpose of this phase Ib study is to evaluate the safety of a Sabin Inactivated Poliovirus Vaccine (sIPV) in adults and children, and the safety and immunogenicity of it in infants. 20 adults aged 18\~45 years and 20 children aged 4 years were only administered one dose of sIPV with high D antigen content. 20 infants aged 2 months (60\~90 days) were administered three doses of sIPV with high D antigen content, on the month 0, 1, 2 schedule. Serum samples were collected before the 1st dose and 30 days after the 3rd dose vaccination to assess the immunogenicity in infants. Adverse events occurring within 30 days after each dose were collected to assess the safety.

The antigen contents of type I, type II and type III polioviruses in the high-dose Sabin IPV were 22 DU, 65 DU and 65 DU. All vaccines were in liquid form, 0.5 ml per dose.

Eligibility criteria: Inclusion Criteria:

* Healthy volunteer aged 18\~45 years with/without prior vaccination of poliovirus and without any contraindication for vaccination;
* Healthy volunteer aged 4 years with/without prior vaccination of poliovirus but without booster vaccination and any contraindication for vaccination;
* Healthy volunteer aged 2 months (60\~90 days) without prior vaccination of poliovirus and any contraindication for vaccination;
* Guardians of the participants should be capable of understanding the written consent form, and such form should be signed prior to enrolment;
* Complying with the requirement of the study protocol;
* Axillary temperature ≤ 37.0 °C;

Exclusion Criteria:

* Women aged 18\~45 years with positive urine pregnancy test, pregnant or lactating women, or women with pregnancy plans within 3 months;
* Preterm or low birth weight infants;
* Congenital malformation, developmental disorders, genetic defects, or severe malnutrition;
* History of polio;
* Severe nervous system disease (epilepsy, seizures or convulsions) or mental illness;
* History of allergy to any vaccine, or any ingredient of the vaccine, or serious adverse reaction(s) to vaccination, such as urticaria, dyspnea, angioneurotic edema, abdominal pain, etc;
* Autoimmune disease or immunodeficiency/immunosuppressive;
* Bleeding disorder diagnosed by a doctor (e.g., coagulation factor deficiency, coagulation disorder, or platelet disorder), or significant bruising or coagulopathy;
* Serious chronic diseases, respiratory diseases, cardiovascular diseases, liver or kidney diseases or skin diseases;
* Mother of the participant has HIV infection;
* Acute illness or acute exacerbation of chronic disease within the past 7 days;
* Had a high fever within the past 3 days (axillary temperature ≥ 38.0°C);
* Receipt of any subunit or inactivated vaccine within the past 7 day;
* Receipt of any live attenuated vaccine within the past 14 days;
* Receipt of any blood product within the past 3 months;
* Any other factor that, in the judgment of the investigator, suggesting the volunteer is unsuitable for this study;

Primary outcomes:
measure: The seroconversion rates (SCRs) of each group 30 days after three-dose regimen
timeFrame: 28~42 days
measure: The geometric mean titer (GMT) of each group 30 days after three-dose regimen
timeFrame: 28~42 days
measure: The geometric mean fold increase (GMI) of each group 30 days after three-dose regimen
timeFrame: 28~42 days
Secondary outcomes:
measure: The incidences of adverse reactions of each group occurred within 30 days after each injection
timeFrame: 30 days
measure: The incidences of adverse events (AEs) of each group occurred within 30 days after each injection
timeFrame: 30 days
Other outcomes:
Locations:
city: Nanjing
country: China
facility: Jiangsu Provincial Center for Disease Control and Prevention
Study officials:
affiliation: Jiangsu Provincial Center for Disease Control and Prevention
name: Fengcai Zhu, Master
role: PRINCIPAL_INVESTIGATOR
References:
citation: Jia S, Tang R, Li G, Hu Y, Liang Q. The effect of maternal poliovirus antibodies on the immune responses of infants to poliovirus vaccines. BMC Infect Dis. 2020 Aug 31;20(1):641. doi: 10.1186/s12879-020-05348-1.