A Phase 2 interventional study of Group B Streptococcus Trivalent Vaccine and Placebo in Streptococcal Infection, Gram-positive Bacterial Infection and Bacterial Infection, sponsored by Novartis. Completed at 5 sites in 2 countries. Open to female participants aged 18 Years to 40 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2014-09-08.
Sponsored by Novartis · Phase 2, Interventional, and Prevention
The study investigated the immune response induced by the Group B streptococcus vaccine in healthy pregnant women. In addition, the study investigated the amount of vaccine induced antibodies which were transferred to the newborn.
6,687 studies on the registry are indexed under Infections; 807 are open to participants now.
This study's enrollment of 86 is below the median of 120 across 4,201 interventional studies indexed under Infections.
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Exclusion Criteria:
Individuals with any known or suspected impairment/alteration of immune function, either congenital or acquired or resulting from:
Note: Anti-D (Rho) Immunoglobulins (anti-RhD) given for Anti-D prophylaxis were to be allowed.
Individuals characterized as "high risk" pregnancies at investigator discretion, such as those who have:
Individuals reporting any known or suspected serious acute, chronic or progressive disease (eg, any history of neoplasm, malignancy, including lymphoproliferative disorder, diabetes, cardiac disease, malnutrition, renal failure, autoimmune disease, HBV or HCV, blood disorders).
Note: Malignancies, highly likely to having been cured at the investigators discretion are allowed. (eg, no relapse since 5 years post last malignancy specific treatment).
Pregnant women who received one injection of Group B Streptococcus Trivalent Vaccine.
Biological: Group B Streptococcus Trivalent Vaccine
Pregnant women who received one injection of saline solution.
Biological: Placebo
Pregnant women who received one injection of Group B Streptococcus Trivalent Vaccine administered intramuscularly.
Pregnant women who received one injection of saline solution administered intramuscularly.
Geometric Mean Concentrations (GMCs) of Antibodies in Mothers and Infants at Delivery/Birth
GMCs of anti-Group B Streptococcus (GBS) capsular polysaccharide (CPS) antibodies against serotypes Ia, Ib and III in mothers and in infants at delivery/birth are presented.
Time frame: Day of delivery/birth
Geometric Mean of the Ratios Between Infant Antibody Level (μg/mL) and Maternal Antibody Level (μg/mL) at Time of Delivery
The Geometric mean transfer ratio of anti-GBS CPS antibodies against serotypes Ia, Ib and III at delivery is calculated as the geometric mean of the pairwise ratios between the antibody concentrations from infant at birth and to maternal serum concentration at delivery.
Time frame: Day of delivery/birth
GMCs (Enzyme-linked Immunosorbent Assay, ELISA) Antibodies Against Serotypes Ia, Ib and III in Maternal Subjects
GMCs (ELISA) of anti-GBS CPS antibodies against serotypes Ia, Ib and III in maternal subjects at study day 1, study day 31 and at day 91 post-partum after one administration of GBS vaccine or placebo are reported.
Time frame: Day 1, day 31 and day 91 post-delivery
Geometric Mean Ratios (GMRs) of Antibody GMCs (ELISA) in Maternal Subjects
GMRs of GMCs (ELISA) of anti-GBS CPS antibodies against serotypes Ia, Ib and III, in maternal subjects at study day 31, at delivery and at day 91 post-partum versus day 1 (baseline) after one administration of GBS vaccine or placebo are reported.
Time frame: Day 31, day of delivery, day 91 post-delivery
GMC (ELISA) of Anti-GBS CPS Antibodies in Infants
GMC (ELISA) of anti-GBS CPS antibodies against serotypes Ia, Ib and III in infants at birth and at 3 months of age are reported.
Time frame: Day of birth and day 91 after birth
GMRs of Anti-GBS CPS Antibody GMCs (ELISA) in Infants at 3 Months of Age Versus GMCs at Birth
GMRs of anti-GBS CPS antibody GMCs (ELISA) against serotypes Ia, Ib and III in infants at 3 months of age (day 91 after birth) versus GMCs at birth are reported.
Time frame: Day 91 after birth
Percentages of Infant Subjects Showing Anti-diphtheria Antibodies GMCs (ELISA) Over 0.1 IU/mL at 1 Month After the Last Routine Infant Immunization
Percentages of infant subjects showing anti-diphtheria antibodies GMCs (ELISA) over 0.1 IU/mL in sera collected at 1 month after the last routine infant immunization (ie, either 5 months or 7 months after birth, depending on the vaccination schedule) are reported.
Time frame: 1 month after the last routine infant immunization
Percentage of Maternal Subjects Reporting Solicited Local and Systemic Adverse Events (AEs)
Percentage of maternal subjects reporting solicited local and systemic AEs and other indicators of reactogenicity from day 1 to 7 after vaccination are reported.
Time frame: From day 1 to 7 after vaccination
Percentage of Maternal Subjects Reporting Unsolicited AEs and Serious Adverse Events (SAEs)
Percentage of maternal subjects reporting unsolicited AEs, SAEs, AEs requiring a non-routine physician's visit, AEs leading to withdrawal are reported.
Time frame: All AEs were recorded until delivery, after delivery all AEs requiring a non-routine physician's visit and AEs leading to withdrawal from the study. SAEs were collected for the duration of the trial.
Percentages of Infants Reporting SAEs
Percentages of infants born from women who received either one injection of the study vaccine or placebo, reporting SAEs from birth until study termination are reported.
Time frame: From birth until study termination
Participants were recruited from 5 centres.
| Milestone | Mothers GBS | Mothers Placebo | Infants GBS | Infants Placebo |
|---|---|---|---|---|
| Started | 51 | 35 | 51 | 35 |
| Completed | 50 | 35 | 50 | 35 |
| Not completed | 1 | 0 | 1 | 0 |
| Withdrew: Withdrawal by subject | 1 | 0 | 1 | 0 |
GMCs of anti-Group B Streptococcus (GBS) capsular polysaccharide (CPS) antibodies against serotypes Ia, Ib and III in mothers and in infants at delivery/birth are presented.
| µg/mL | Mothers GBS | Mothers Placebo | Infants GBS | Infants Placebo |
|---|---|---|---|---|
| GBS Ia | 5.39 (2.97 to 9.77) | 0.41 (0.2 to 0.85) | 4.37 (2.39 to 7.99) | 0.4 (0.19 to 0.83) |
| GBS Ib (N=40, 22, 40, 22) | 3.35 (1.44 to 7.77) | 0.064 (0.021 to 0.19) | 2.59 (1.14 to 5.87) | 0.092 (0.032 to 0.27) |
| GBS III (N=40, 25, 40, 25) | 2.45 (1.15 to 5.2) | 0.056 (0.022 to 0.14) | 1.65 (0.78 to 3.5) | 0.055 (0.022 to 0.14) |
The Geometric mean transfer ratio of anti-GBS CPS antibodies against serotypes Ia, Ib and III at delivery is calculated as the geometric mean of the pairwise ratios between the antibody concentrations from infant at birth and to maternal serum concentration at delivery.
| Ratio | Mothers GBS | Mothers Placebo |
|---|---|---|
| GBS Ia | 0.81 (0.72 to 0.91) | 0.97 (0.85 to 1.11) |
| GBS Ib (N=40, 22) | 0.77 (0.62 to 0.97) | 1.44 (1.06 to 1.94) |
| GBS III (N=40, 25) | 0.68 (0.59 to 0.78) | 0.99 (0.83 to 1.18) |
GMCs (ELISA) of anti-GBS CPS antibodies against serotypes Ia, Ib and III in maternal subjects at study day 1, study day 31 and at day 91 post-partum after one administration of GBS vaccine or placebo are reported.
| µg/mL | Mothers GBS | Mothers Placebo |
|---|---|---|
| GBS Ia (day 1) | 0.28 (0.19 to 0.41) | 0.37 (0.24 to 0.58) |
| GBS Ia (day 31; N=49, 32) | 4.83 (2.89 to 8.06) | 0.36 (0.19 to 0.65) |
| GBS Ia (day 91 post-delivery; N = 44, 34) | 5.89 (3.86 to 8.99) | 0.46 (0.29 to 0.75) |
| GBS Ib (day 1; N= 50, 34) | 0.13 (0.084 to 0.19) | 0.084 (0.051 to 0.14) |
| GBS Ib (day 31; N=49, 31) | 1.68 (0.97 to 2.92) | 0.14 (0.069 to 0.27) |
| GBS Ib (day 91 post-delivery; N= 44, 33) | 3.46 (2.33 to 5.14) | 0.17 (0.11 to 0.27) |
| GBS III (day 1) | 0.11 (0.07 to 0.16) | 0.093 (0.056 to 0.15) |
| GBS III (day 31; N= 49, 32) | 1.46 (0.83 to 2.57) | 0.12 (0.06 to 0.23) |
| GBS III (day 91 post-delivery; N=44, 34) | 2.69 (1.78 to 4.06) | 0.11 (0.07 to 0.18) |
GMRs of GMCs (ELISA) of anti-GBS CPS antibodies against serotypes Ia, Ib and III, in maternal subjects at study day 31, at delivery and at day 91 post-partum versus day 1 (baseline) after one administration of GBS vaccine or placebo are reported.
| Ratio | Mothers GBS | Mothers Placebo |
|---|---|---|
| GBS Ia (Day 31/day 1; N=49, 32) | 15 (9.12 to 25) | 1.22 (0.66 to 2.25) |
| GBS Ia (Delivery/day 1) | 16 (11 to 25) | 1.2 (0.72 to 2.01) |
| GBS Ia (day 91 post-delivery/day 1; N= 44, 34) | 19 (12 to 28) | 1.51 (0.94 to 2.42) |
| GBS Ib (Day 31/day 1; N=48, 30) | 18 (9.94 to 32) | 1.14 (0.56 to 2.35) |
| GBS Ib (Delivery/day 1; N=50, 34) | 23 (14 to 39) | 1.13 (0.63 to 2.05) |
| GBS Ib (day 91 post-delivery/day 1; N=44, 32) | 33 (22 to 48) | 1.53 (0.96 to 2.43) |
| GBS III (Day 31/day 1; N=49, 32) | 17 (9.17 to 30) | 1.19 (0.59 to 2.42) |
| GBS III (Delivery/day 1) | 20 (12 to 33) | 1.08 (0.6 to 1.96) |
| GBS III (day 91 post-delivery/day 1; N=44, 34) | 28 (18 to 43) | 1.11 (0.69 to 1.8) |
GMC (ELISA) of anti-GBS CPS antibodies against serotypes Ia, Ib and III in infants at birth and at 3 months of age are reported.
| μg/mL | Infants GBS | Infants Placebo |
|---|---|---|
| GBS Ia (day of birth) | 5.14 (2.64 to 10) | 0.33 (0.15 to 0.71) |
| GBS Ia (day 91 after birth) | 1.28 (0.76 to 2.16) | 0.25 (0.13 to 0.46) |
| GBS Ib (day of birth; N=31, 20) | 2.93 (1.14 to 7.57) | 0.1 (0.031 to 0.32) |
| GBS Ib (day 91 after birth) | 0.54 (0.25 to 1.19) | 0.063 (0.025 to 0.16) |
| GBS III (day of birth; N=30, 22) | 1.93 (0.82 to 4.59) | 0.065 (0.024 to 0.18) |
| GBS III (day 91 after birth) | 0.43 (0.21 to 0.86) | 0.065 (0.029 to 0.15) |
GMRs of anti-GBS CPS antibody GMCs (ELISA) against serotypes Ia, Ib and III in infants at 3 months of age (day 91 after birth) versus GMCs at birth are reported.
| Ratio | Infants GBS | Infants Placebo |
|---|---|---|
| GBS Ia | 0.25 (0.19 to 0.32) | 0.76 (0.57 to 1.01) |
| GBS Ib (N=31, 20 ) | 0.22 (0.16 to 0.29) | 0.54 (0.38 to 0.78) |
| GBS III (N=30, 22) | 0.25 (0.19 to 0.32) | 0.85 (0.62 to 1.16) |
Percentages of infant subjects showing anti-diphtheria antibodies GMCs (ELISA) over 0.1 IU/mL in sera collected at 1 month after the last routine infant immunization (ie, either 5 months or 7 months after birth, depending on the vaccination schedule) are reported.
| Percentages of subjects | Infants GBS | Infants Placebo |
|---|---|---|
| Percentages of Infant Subjects Showing Anti-diphtheria Antibodies GMCs (ELISA) Over 0.1 IU/mL at 1 Month After the Last Routine Infant Immunization | 100 (91 to 100) | 100 (87 to 100) |
Percentage of maternal subjects reporting solicited local and systemic AEs and other indicators of reactogenicity from day 1 to 7 after vaccination are reported.
| Percentages of subjects | Mothers GBS | Mothers Placebo |
|---|---|---|
| Any local | 40 | 24 |
| Induration (>=25 mm; N =49, 34) | 6 | 0 |
| Swelling (>=25 mm; N =49, 34) | 4 | 0 |
| Ecchymosis (>=25 mm; N =49, 34 ) | 2 | 0 |
| Erythema (>=25 mm; N =49, 34) | 6 | 0 |
| Pain (N =49, 34) | 35 | 12 |
| Any systemic | 46 | 38 |
| Chills (N =49, 34) | 4 | 3 |
| Fatigue (N =49, 34) | 31 | 26 |
| Malaise (N =49, 34) | 14 | 9 |
| Myalgia (N =49, 34) | 27 | 3 |
| Headache (N =49, 34) | 16 | 21 |
| Rash (N =49, 34) | 2 | 3 |
| Arthralgia (N =49, 34) | 4 | 9 |
| Nausea (N =49, 34) | 6 | 9 |
| Fever, body temperature >38° C (N =49, 33) | 0 | 0 |
| Any other | 8 | 3 |
| Stayed home (N =49, 34) | 2 | 0 |
| Use of analgesics/antipyretics (N =49, 34) | 6 | 3 |
Percentage of maternal subjects reporting unsolicited AEs, SAEs, AEs requiring a non-routine physician's visit, AEs leading to withdrawal are reported.
| Percentages of subjects | Mothers GBS | Mothers Placebo |
|---|---|---|
| Any unsolicited AE | 63 | 74 |
| Any SAE | 14 | 23 |
| Medically-attended AEs | 51 | 54 |
| AEs leading to withdrawal | 0 | 0 |
Percentages of infants born from women who received either one injection of the study vaccine or placebo, reporting SAEs from birth until study termination are reported.
| Percentages of subjects | Infants GBS | Infants Placebo |
|---|---|---|
| Percentages of Infants Reporting SAEs | 24 | 31 |
Collected over Solicited (systematic) AEs were collected from day 1 to 7 after vaccination; unsolicited (non-systematic) AEs from day 1 until delivery, SAE from day 1 until study termination (day 151 for subjects enrolled in Belgium, day 211 for subjects in Canada).. Non-serious events are listed at a 5% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| Mothers GBS | — | 7/51 (13.7%) | 35/51 (68.6%) |
| Mothers Placebo | — | 8/35 (22.9%) | 24/35 (68.6%) |
| Infants GBS | — | 12/51 (23.5%) | 0/51 (0%) |
| Infants Placebo | — | 11/35 (31.4%) | 2/35 (5.7%) |
| Event | Mothers GBS | Mothers Placebo | Infants GBS | Infants Placebo |
|---|---|---|---|---|
| Premature labourPregnancy, puerperium and perinatal conditions | 0/51 | 2/35 | 0/51 | 0/35 |
| Jaundice acholuricBlood and lymphatic system disorders | 0/51 | 0/35 | 0/51 | 1/35 |
| Cataract congenitalCongenital, familial and genetic disorders | 0/51 | 0/35 | 0/51 | 1/35 |
| Ventricular septal defectCongenital, familial and genetic disorders | 0/51 | 0/35 | 0/51 | 1/35 |
| CryingGeneral disorders | 0/51 | 0/35 | 0/51 | 1/35 |
| AppendicitisInfections and infestations | 0/51 | 1/35 | 0/51 | 0/35 |
| Respiratory syncytial virus infectionInfections and infestations | 0/51 | 0/35 | 1/51 | 1/35 |
| Urinary tract infectionInfections and infestations | 0/51 | 0/35 | 0/51 | 1/35 |
| Viral infectionInfections and infestations | 0/51 | 0/35 | 1/51 | 1/35 |
| Post procedural haemorrageInjury, poisoning and procedural complications | 0/51 | 1/35 | 0/51 | 0/35 |
| Event | Mothers GBS | Mothers Placebo | Infants GBS | Infants Placebo |
|---|---|---|---|---|
| Injection site painGeneral disorders | 18/51 | 8/35 | 0/51 | 0/35 |
| FatigueGeneral disorders | 15/51 | 10/35 | 0/51 | 0/35 |
| HeadacheNervous system disorders | 8/51 | 10/35 | 0/51 | 0/35 |
| MyalgiaMusculoskeletal and connective tissue disorders | 13/51 | 1/35 | 0/51 | 0/35 |
| Injection site erythemaGeneral disorders | 9/51 | 4/35 | 0/51 | 0/35 |
| NauseaGastrointestinal disorders | 4/51 | 5/35 | 0/51 | 0/35 |
| MalaiseGeneral disorders | 7/51 | 4/35 | 0/51 | 0/35 |
| Injection site indurationGeneral disorders | 6/51 | 1/35 | 0/51 | 0/35 |
| HaemorrhoidsGastrointestinal disorders | 0/51 | 3/35 | 0/51 | 0/35 |
| Injection site haemorrhageGeneral disorders | 2/51 | 3/35 | 0/51 | 0/35 |
All enrolled population
| Age, Continuous(years) | Mothers GBS | Mothers Placebo | Infants GBS | Infants Placebo | Total |
|---|---|---|---|---|---|
| Mean | 29.7 ± 4.9 | 30 ± 5.5 | NA ± NA | NA ± NA | 29.8 ± 5.1 |
| Age, Continuous(days) | Mothers GBS | Mothers Placebo | Infants GBS | Infants Placebo | Total |
|---|---|---|---|---|---|
| Mean | NA ± NA | NA ± NA | 0 ± 0 | 0 ± 0 | 0 ± 0 |
| Sex: Female, Male(Participants) | Mothers GBS | Mothers Placebo | Infants GBS | Infants Placebo | Total |
|---|---|---|---|---|---|
| Female | 51 | 35 | 21 | 15 | 122 |
| Male | 0 | 0 | 30 | 20 | 50 |
| Region of Enrollment(participants) | Mothers GBS | Mothers Placebo | Infants GBS | Infants Placebo | Total |
|---|---|---|---|---|---|
| Canada | 15 | 11 | 15 | 11 | 52 |
| Belgium | 36 | 24 | 36 | 24 | 120 |
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