An Observer-blind Study to Rank Different Formulations of GSK Biologicals' Investigational RSV Vaccine (GSK3003891A) Administered to Healthy Women
试验速览
- 阶段
- 2 期
- 状态
- 已完成
- 入组人数
- 406
- 试验地点
- 1
- 主要终点
- Neutralizing Antibody Titers Against RSV-A Subtype
研究概览
简要总结
The purpose of this study is to rank different RSV vaccine dosages of antigen (or formulations) based on safety/reactogenicity and immune response data. The formulations eliciting strong immune responses while maintaining an acceptable safety profile will be considered for further evaluation, including in studies vaccinating pregnant women.
详细描述
The purpose of the RSV F-021 study that will be conducted in an observer-blind manner during Epoch 1 and single blinded during Epoch 2, is to rank the 3 different doses of the non-adjuvanted investigational RSV PreF-vaccine (30, 60 and 120 μg) based on safety/reactogenicity and immunogenicity data up to 1 month post-vaccination (Day 30). Non-pregnant women aged 18-45 years will be randomized in a 1:1:1:1 ratio to receive one of three dose levels (30, 60, 120 μg) of the RSV PreF vaccine or placebo. The doses eliciting strong immune responses while maintaining an acceptable safety profile will be considered for further evaluation, including in studies vaccinating pregnant women. This will allow evaluation of a wider antigen dose range to determine if there is a dose response relationship in terms of antibody response at the higher dose range that was not present at the lower range.
Since in RSV F-021 the 120ug dosage of the PreF-based investigational RSV vaccine will be tested for the first time in humans, appropriate safety monitoring is planned for this study, including pausing enrolment when the first 25% of subjects from each study group have been vaccinated until review of day 7 post-vaccination safety data by an unblinded GSK internal Safety Review Committee (iSRC) has been completed. The enrolment/vaccination of the remaining subjects can only start following the favourable outcome of this iSRC safety review.
In addition to study visits at Day 0, Day 7 and Day 30 to evaluate primary objective of the study, additional study visits are planned at Day 60 and 90 for further investigation of the immunogenicity and safety/reactogenicity profile of the formulations. A follow-up period has been set up in which the subjects will be contacted at Day 180, 270 and 360. During these contacts, the investigator (or delegate) will ask the subject if she has experienced any serious adverse events and/or any AEs leading to study withdrawal since Day 90/last contact (as applicable), as well as if she has become pregnant during the post-vaccination period. The investigator (or delegate) will also ask the subject about concomitant vaccinations/products/medications that she has received since Day 90/last contact (as applicable) and whether the she had a respiratory tract infection that needed medical attention. Contact should be preferably performed via telephone, or alternatively, if phone contact is not possible, through email/other means where the information can be fully collected.
Healthy, non-pregnant women aged 18 - 45 years will be enrolled in this study:
Women aged 18 - 45 years are selected to match the vaccine's target population, i.e. pregnant women, as closely as possible (gender, age).
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- Triple (Participant, Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 45 Years（Adult）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •Subjects who, in the opinion of the investigator, can and will comply with the requirements of the protocol.
- •Written informed consent obtained from the subject prior to performance of any study specific procedure.
- •Non-pregnant female between, and including, 18 and 45 years of age at the time of study vaccination.
- •Healthy subjects as established by medical history and clinical examination before entering into the study.
- •Female subjects of non-childbearing potential may be enrolled in the study
- •Non-childbearing potential is defined as pre-menarche, hysterectomy, ovariectomy or post-menopause.
- •Female subjects of childbearing potential may be enrolled in the study, if the subject:
- •Has practiced adequate contraception for 30 days prior to study vaccination, and
- •Has a negative pregnancy test on the day of study vaccination, and
- •Has agreed to continue adequate contraception up to 90 days after vaccination.
排除标准
- •Use of any investigational or non-registered product other than the study vaccines within 30 days prior to study vaccination, or planned use during the study period.
- •Concurrently participating in the active phase of another clinical study, at any time during the study period, in which the subject has been or will be exposed to an investigational or a non-investigational vaccine/product.
- •Chronic administration of immunosuppressants or other immune-modifying drugs, as well as administration of long-acting immune-modifying drugs, within 6 months prior to study vaccination, or planned administration until 90 days post-vaccination. For corticosteroids, this will mean prednisone ≥ 10 mg/day, or equivalent. Inhaled and topical steroids are allowed.
- •Administration of immunoglobulins and/or any blood products during the period starting 3 months before the study vaccination, or planned administration until 90 days post-vaccination.
- •Planned administration/administration of a vaccine not foreseen by the study protocol within the period starting 30 days before and ending 30 days after study vaccination, with the exception of any licensed influenza vaccine which may be administered ≥ 15 days before or after study vaccination.
- •Previous experimental vaccination against RSV.
- •History of any neurological disorders or seizures.
- •Family history of congenital or hereditary immunodeficiency.
- •Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination
- •History of or current autoimmune disease
- •Acute or chronic, clinically significant pulmonary, cardiovascular, hepatic or renal functional abnormality as determined by physical examination and/or Medical History.
- •Lymphoproliferative disorder or malignancy within previous 5 years.
- •History of any reaction or hypersensitivity likely to be exacerbated by any component of the study vaccine.
- •Hypersensitivity to latex.
- •Any medical condition that in the judgment of the investigator would make intramuscular injection unsafe.
- •Current alcohol and/or drug abuse.
- •Acute disease and/or fever at the time of enrolment.
- •Fever is defined as temperature ≥37.5°C for oral, axillary or tympanic route, or ≥ 38.0°C for rectal route.
- •Subjects with a minor illness without fever may be enrolled at the discretion of the investigator.
- •For subjects with acute disease and/or fever at the time of enrolment, Visit 1/Day 0 will be rescheduled within the allowed recruitment period.
- •Body mass index (BMI) > 40 kg/m².
- •Pregnant or lactating female.
- •Planned move to a location that will prohibit participating in the trial until study conclusion.
- •Any other condition that the investigator judges may interfere with study procedures or findings.
研究组 & 干预措施
GSK3003891A vaccine formulation 1 Group
Subjects in this group received a single 30 micrograms (µg) dose injection of the investigational GSK3003891A vaccine at Day 0.
干预措施: RSV Vaccine (GSK3003891A) formulation 1 (Biological)
GSK3003891A vaccine formulation 2 Group
Subjects in this group received a single 60µg dose injection of the investigational GSK3003891A vaccine at Day 0.
干预措施: RSV Vaccine (GSK3003891A) formulation 2 (Biological)
GSK3003891A vaccine formulation 3 Group
Subjects in this group received a single 120µg dose injection of the investigational GSK3003891A vaccine at Day 0.
干预措施: RSV Vaccine (GSK3003891A) formulation 3 (Biological)
Control Group
Subjects in this group received a single placebo injection at Day 0.
干预措施: Placebo (Formulation buffer S9b) (Drug)
结局指标
主要结局
Neutralizing Antibody Titers Against RSV-A Subtype
时间窗: At Day 30
RSV-A is one of the two antigenically distinct subgroups of the Respiratory Synctial Virus (RSV). Antibody titers were determined by neutralization assay and presented as geometric mean titers (GMTs), for a seropositivity cut-off value ≥ 8 ED60 (Estimated Dilution 60). This primary objective focused only on subjects from the investigational GSK3003891A vaccine groups (GSK3003891A vaccine formulation 1 Group, GSK3003891A vaccine formulation 2 Group and GSK3003891A vaccine formulation 3 Group).
Number of Subjects With Any Grade 2 and Grade 3 General Adverse Events (AEs) - Solicited and Unsolicited
时间窗: During the 7-day (Days 0-6) post-vaccination period
Assessed solicited general AEs were fatigue, gastrointestinal symptoms \[nausea, vomiting, diarrhea and/or abdominal pain\], fever and headache. An unsolicited AE covers any untoward medical occurrence in a clinical investigation subject temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product and reported in addition to those solicited during the clinical study and any solicited symptom with onset outside the specified period of follow-up for solicited symptoms.Grade 2 symptoms = occurrence of symptoms discomforting enough to interfere with daily activities. Grade 3 symptoms = symptoms that prevented normal activities. This primary objective focused only on subjects from the investigational GSK3003891A vaccine groups (GSK3003891A vaccine formulation 1 Group, GSK3003891A vaccine formulation 2 Group and GSK3003891A vaccine formulation 3 Group).
Number of Subjects With Related Serious Adverse Events (SAEs)
时间窗: During the 7-day (Days 0-6) post-vaccination period
SAEs assessed include medical occurrences that result in death, are life threatening, require hospitalization or prolongation of hospitalization or result in disability/incapacity. Related SAEs = SAEs assessed by the investigator as related to the vaccination. This primary objective focused only on subjects from the investigational GSK3003891A vaccine groups (GSK3003891A vaccine formulation 1 Group, GSK3003891A vaccine formulation 2 Group and GSK3003891A vaccine formulation 3 Group).
Number of Subjects With Grade 2 and Grade 3 Fever
时间窗: During the 7-day (Days 0-6) post-vaccination period
Grade 2 Fever was defined as oral temperature above (\>) 38.5 degrees Celsius (°C) to less than or equal to (≤) 39.5°C. Grade 3 Fever was defined as oral temperature \> 39.5°C. This primary objective focused only on subjects from the investigational GSK3003891A vaccine groups (GSK3003891A vaccine formulation 1 Group, GSK3003891A vaccine formulation 2 Group and GSK3003891A vaccine formulation 3 Group).
Palivizumab Competing Antibody (PCA) Concentrations
时间窗: At Day 0
PCA concentrations were determined by Enzyme-Linked Immunosorbent Assay (ELISA), presented as geometric mean concentrations (GMCs) and expressed in micrograms per milliliter (µg/mL), for a seropositivity cut-off ≥ 9.6 µg/mL. This primary objective focused only on subjects from the investigational GSK3003891A vaccine groups (GSK3003891A vaccine formulation 1 Group, GSK3003891A vaccine formulation 2 Group and GSK3003891A vaccine formulation 3 Group).
Pavilizumab Competing Antibody (PCA) Concentrations
时间窗: At Day 30
PCA concentrations were determined by Enzyme-Linked Immunosorbent Assay (ELISA), presented as geometric mean concentrations (GMCs) and expressed in micrograms per milliliter (µg/mL), for a seropositivity cut-off ≥ 9.6 µg/mL. This primary objective focused only on subjects from the investigational GSK3003891A vaccine groups (GSK3003891A vaccine formulation 1 Group, GSK3003891A vaccine formulation 2 Group and GSK3003891A vaccine formulation 3 Group).
次要结局
- Number of Subjects With Any SAEs(From Day 0 up to study end, at Day 360)
- Number of Subjects With Any Unsolicited AEs(During the 30-day (Days 0-29) post-vaccination period)
- Number of Subjects With Any Biochemical and Hematological Laboratory Abnormalities, by Maximum Grading(From Day 7 up to Day 90)
- Neutralizing Antibody Titers Against RSV-A Subtype(At Day 60 and Day 90)
- Neutralizing Antibody Titers Against RSV-B Subtype(At Day 0, Day 30, Day 60 and Day 90)
- Antibody Concentrations Against Neogenin (NEO) Residual Host Cell Protein(At Day 0 and Day 30)
- Number of Subjects With Any, Grade 2, Grade 3 and Medically Attended Solicited Local AEs(During the 7-day (Days 0-6) post-vaccination period)
- Number of Subjects With Any, Grade 2, Grade 3, Related and Medically Attended Solicited General AEs(During the 7-day (Days 0-6) post-vaccination period)
- Palivizumab Competing Antibody (PCA) Concentrations(At Day 60 and Day 90)
- Number of Subjects With Any Biochemical and Hematological Laboratory Abnormalities(At Day 90)
- Number of Subjects With Any Medically Attended (MA) Respiratory Tract Infections (RTIs) Associated With RSV(From Day 0 up to study end, at Day 360)