Safety and Preliminary Immunogenicity Study of Inactivated Vaccine for Prevention of Rotavirus Infection

Chinese Academy of Medical Sciences32 enrolled

Overview

This study is a randomized, double-blinded, placebo-controlled, Phase 1, dose-escalation study to evaluate the safety, reactogenicity and immunogenicity of Inactivated Rotavirus Vaccine (IRV) performed in healthy adult (aged 18-49 years), adolescent (aged 6-17 years) and infant subjects (aged 2-71 months). Primary objectives of the clinical trial include assessing the safety and tolerability of IRV given at two and three dose levels and comparing the safety and tolerability of IRV after each vaccination, between dosage groups, and by pre-vaccination rotavirus immune status. Secondary objective of the clinical trial is immunogenicity evaluation after each vaccination, between dosage groups, and by pre-vaccination rotavirus immune status.

This clinical trial aimed to evaluate safety and immunogenicity effect of IRV（Vero cell）in Chinese healthy adults, adolescents and infants. The subjects were divided into 5 groups. Two dose and three dose levels will be evaluated. Adult (aged 18-49 years), adolescents (aged 6-17 years), infant subjects (aged 7-71 months) and infant subjects (aged 2-6 months) will receive intramuscular (IM) injection on Days 0 and 28. Infant subjects (aged 2-6 months) subjects will receive intramuscular (IM) injection on Days 0 , 28 and 56. Three dose subgroups (low dose, medium dose and high dose were included in each age group. To maintain blindness in the trial, subjects were randomized in a 3:1 ratio to receive different dosages of the vaccine group or placebo group. In the analysis, the placebo subjects of the same age group were combined to ensure that the analysis ratio of the experimental vaccine group to the placebo group is 1:1. Therefore, 24 subjects in the experimental vaccine group and 8 subjects in the placebo group were chose in each dose group. Subjects were randomized to receive different dosages of the vaccine or placebo. Vaccination was performed in the adult group first, then on the adolescents, and on the infants last. Within each age group, dose-escalation with the principle from low to high dosage.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

Interventions

Low dosage IRV on a 0- and 28-day scheduleBIOLOGICAL

Inactivated Rotavirus vaccine (Vero cell) of 80EU/0.5ml on day 0, 28

Medium dosage IRV on a 0- and 28-day scheduleBIOLOGICAL

Inactivated Rotavirus vaccine (Vero cell) of 160EU/0.5ml on day 0, 28

High dosage IRV on a 0- and 28-day scheduleBIOLOGICAL

Inactivated Rotavirus vaccine (Vero cell) of 320EU/0.5ml on day 0,28

Low dosage IRV on a 0- and 28-day scheduleBIOLOGICAL

Inactivated Rotavirus vaccine (Vero cell) of 80EU/0.5ml on day 0,28

Medium dosage IRV on a 0- and 28-day scheduleBIOLOGICAL

Inactivated Rotavirus vaccine (Vero cell) of 160EU/0.5ml on day 0,28

High dosage IRV on a 0- and 28-day scheduleBIOLOGICAL

Inactivated Rotavirus vaccine (Vero cell) of 320EU/0.5ml on day 0,28

Low dosage IRV on a 0- and 28-day scheduleBIOLOGICAL

Inactivated Rotavirus vaccine (Vero cell) of 80EU/0.5ml on day 0,28

Medium dosage IRV on a 0- and 28-day scheduleBIOLOGICAL

Inactivated Rotavirus vaccine (Vero cell) of 160EU/0.5ml on day 0,28

High dosage IRV on a 0- and 28-day scheduleBIOLOGICAL

Inactivated Rotavirus vaccine (Vero cell) of 320EU/0.5ml on day 0,28

Low dosage IRV on a 0- and 28-day scheduleBIOLOGICAL

Inactivated Rotavirus vaccine (Vero cell) of 80EU/0.5ml on day 0,28

Medium dosage IRV on a 0- and 28-day scheduleBIOLOGICAL

Inactivated Rotavirus vaccine (Vero cell) of 160EU/0.5ml on day 0,28

High dosage IRV on a 0- and 28-day scheduleBIOLOGICAL

Inactivated Rotavirus vaccine (Vero cell) of 320EU/0.5ml on day 0,28

Low dosage IRV on a 0- , 28- and 56-day scheduleBIOLOGICAL

Inactivated Rotavirus vaccine (Vero cell) of 80EU/0.5ml on day 0,28,56

Medium dosage IRV on a 0- , 28- and 56-day scheduleBIOLOGICAL

Inactivated Rotavirus vaccine (Vero cell) of 160EU/0.5ml on day 0,28,56

High dosage IRV on a 0- , 28- and 56-day scheduleBIOLOGICAL

Inactivated Rotavirus vaccine (Vero cell) of 320EU/0.5ml on day 0,28,56

Placebo on day 0, 28BIOLOGICAL

Two doses of placebo at the vaccination schedule of day 0,28

Placebo on day 0, 28, 56BIOLOGICAL

Three doses of placebo at the vaccination schedule of day 0, 28,56

Eligibility

Sex: ALLMin age: 2 MonthsMax age: 49 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: 1. 2 months old to 49 years old, healthy resident, excluding the following: * Congenital malformations, developmental disorders, genetic defects, severe malnutrition and other conditions； * Have Congenital or acquired immunodeficiency, HIV infection, lymphoma, leukemia, systemic lupus Erythematosus (SLE) , juvenile Rheumatoid Arthritis, or other autoimmune diseases； * History of Cerebral Palsy, seizures, mental illness. 2. I and/or my guardian voluntarily participate and sign an informed consent form, and can follow the requirements of the clinical trial protocol; 3. Have never received oral rotavirus live attenuated vaccine. Exclusion Criteria: * First dose exclusion criteria: 1. Armpit temperature \>37.0℃ before vaccination； 2. Subjects with history of intussusception or suffering from intussusception； 3. Subjects with history of convulsions and convulsions; history of epilepsy, mental illness and their family history； 4. Subjects with history of allergy to vaccination； 5. Acute attacks of various acute diseases (fever) or chronic diseases within 3 days before receiving the study vaccine； 6. Subjects receiving immune enhancement or immunosuppressive therapy within 3 months (continuous oral or infusion for more than 14 days)； 7. Subjects vaccinated with live attenuated vaccine within 14 days and other vaccines within 7 days before vaccination； 8. Subjects with history of coagulation dysfunction (e.g. Coagulation factor deficiency, coagulation disease); 9. Subjects with primary and secondary immunocompromised (history of thyroid, pancreas, liver, spleen resection, or need for treatment for thyroid disease in the past 12 months)； 10. Subjects with abnormal blood biochemistry, blood routine, and urine routine related indicators that have clinical significance\* before vaccination； 11. Subjects who are currently or plan to participate in other clinical studies; 12. According to the investigator's judgment, the subject has any other factors that are not suitable for participating in the clinical trial. Note\*: The criterion of no clinical significance is "the laboratory test value between the upper limit (ULN) or lower limit (LLN) of the reference value range and the grade 1 adverse event" as judged by the doctor to have no clinical significance. * In addition to the general exclusion criteria, specific subjects should also follow the following exclusion criteria. （1）18-49-year-old women who have plans to become pregnant within the past 2 months or are pregnant or are breastfeeding；（2）Positive pregnancy test of female subjects of childbearing age；（3）18-49-year-old adults with hypertension that cannot be controlled by drugs (on site measurement: systolic blood pressure ≥140mmHg or diastolic blood pressure ≥90mmHg)；（4）24-month-old infant subjects with a history of dystocia, suffocation rescue, neurological damage；（5）24-month-old baby subjects are born prematurely (delivered after the 37th week of pregnancy), low weight (birth weight for girls \<2300g, boys \<2500g). -Exclusion criteria for follow-up needle: 1. Subjects with serious adverse reaction after the previous vaccination; 2. For the subjects who are newly discovered or newly appeared after the first vaccination that do not meet the selection criteria or meet the first exclusion criteria, the investigator will determine whether the subjects continue to participate the clinical trial; 3. Subjects vaccinated with other rotavirus vaccines other than the research vaccine during the study period; 4. Other exclusion reasons considered by the researcher.

Outcomes

Primary Outcomes

Safety index-incidence of adverse reactions/events

Incidence of adverse reactions/events after the first dose vaccination.

Time frame: 0-30 minutes after the first dose vaccination

Safety index-incidence of adverse reactions/events

Incidence of adverse reactions/events after the second dose vaccination.

Time frame: 0-30 minutes after the second dose vaccination

Safety index-incidence of adverse reactions/events

Incidence of adverse reactions/events after the third dose vaccination.

Time frame: 0-30 minutes after the third dose vaccination

Safety index-incidence of abnormal blood biochemistry assessment

Incidence of abnormal blood biochemistry assessment at Day 4 after the first dose vaccination, except children aged Month 2-71

Time frame: Day 4 after the first dose vaccination

Safety index-incidence of abnormal blood routine assessment

Incidence of abnormal blood routine assessment at Day 4 after the first dose vaccination, except children aged Month 2-71

Time frame: Day 4 after the first dose vaccination

Safety index-incidence of abnormal urine routine assessment

Incidence of abnormal urine routine assessment at Day 4 after the first dose vaccination, except children aged Month 2-71

Time frame: Day 4 after the first dose vaccination

Safety index-incidence of abnormal blood biochemistry assessment

Incidence of abnormal blood biochemistry assessment at Day 4 after the second dose vaccination, except children aged Month 2-71

Time frame: Day 4 after the second dose vaccination

Safety index-incidence of abnormal blood routine assessment

Incidence of abnormal blood routine assessment at Day 4 after the second dose vaccination, except children aged Month 2-71

Time frame: Day 4 after the second dose vaccination

Safety index-incidence of abnormal urine routine assessment

Incidence of abnormal urine routine assessment at Day 4 after the second dose vaccination, except children aged Month 2-71

Time frame: Day 4 after the second dose vaccination

Safety index-incidence of abnormal blood biochemistry assessment

Incidence of abnormal blood biochemistry assessment at Day 4 after the third dose vaccination, except children aged Month 2-71

Time frame: Day 4 after the third dose vaccination

Safety index-incidence of abnormal blood routine assessment

Incidence of abnormal blood routine assessment at Day 4 after the third dose vaccination, except children aged Month 2-71

Time frame: Day 4 after the third dose vaccination

Safety index-incidence of abnormal urine routine assessment

Incidence of abnormal urine routine assessment at Day 4 after the third dose vaccination, except children aged Month 2-71

Time frame: Day 4 after the third dose vaccination

Safety index-incidence of adverse reactions/events

Incidence of adverse reactions/events after the first dose vaccination.

Time frame: Day 0 to7 after the first dose vaccination

Safety index-incidence of adverse reactions/events

Incidence of adverse reactions/events after the first dose vaccination.

Time frame: Day 8 to30 after the first dose vaccination

Safety index-incidence of adverse reactions/events

Incidence of adverse reactions/events after the second dose vaccination.

Time frame: Day 0 to7 after the second dose vaccination

Safety index-incidence of adverse reactions/events

Incidence of adverse reactions/events after the second dose vaccination.

Time frame: Day 8 to30 after the second dose vaccination

Safety index-incidence of adverse reactions/events

Incidence of adverse reactions/events after the third dose vaccination.

Time frame: Day 0 to7 after the third dose vaccination

Safety index-incidence of adverse reactions/events

Incidence of adverse reactions/events after the third dose vaccination.

Time frame: Day 8 to30 after the third dose vaccination

Safety index-incidence of serious adverse events

Occurrence of serious adverse reactions/events after vaccination.

Time frame: From the beginning of the vaccination to 6 months after the last vaccination completed

Secondary Outcomes

Immunogenicity index-seroconversion rates of neutralizing antibody

Neutralizing antibody assay will be performed using the neutralization and ELISA method. Seroconversion will be defined as a change from seronegative (\<1:8) to seropositive (≥1:8), or ≥4-fold increase from baseline.

Time frame: Day 28 after the second dose vaccination

Immunogenicity index-seroconversion rates of neutralizing antibody

Time frame: Day 28 after the third dose vaccination

Immunogenicity index-geometric mean titer (GMT) of neutralizing antibody

Neutralizing antibody assay will be performed using the neutralization and ELISA method.

Time frame: Day 28, 90, 180 after the second dose vaccination

Immunogenicity index-geometric mean titer (GMT) of neutralizing antibody

Neutralizing antibody assay will be performed using the neutralization and ELISA method.

Time frame: Day 28, 90, 180 after the third dose vaccination

Safety and Preliminary Immunogenicity Study of Inactivated Vaccine for Prevention of Rotavirus Infection

Overview

Conditions

Interventions

Eligibility

Locations (1)

Outcomes

Primary Outcomes

Secondary Outcomes