GBSNCT03936816
The Implementation of Real-time PCR - Intrapartum GBS (Group B Streptococcus) Colonization to Reduce Antibiotic Prophylaxis
An observational study of GBS, run by Carmel Medical Center at 1 site in Israel.
Trial summary
The implementation of real-time PCR for detection of intrapartum GBS (group B Streptococcus) colonization as a way to reduce antibiotic prophylaxis usage. Read more about this study
- Who is it for?
- Ages 18 to 45 years, women only
- Conditions the study is for
- GBS
- What is being tested?
- GBS vaginal double swab
- How many people
- 303 participants
- Where
- 1 siteIsrael
- Study dates
- 1 Jun 2019to 30 Aug 2020
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 45 years
- Women only
- No healthy volunteers
- Adult
Study population: A cohort of 300 patient admitted to the labor ward in CARMEL medical center that need prophylactic antibiotics for GBS because of culture screen at 35-37 weeks or because of having risk factors.
Who may be able to join
- Pregnant patients that were screened positive by a culture at 35-37 weeks (those patients will be screened with a vaginal double swab upon admission to labor ward).
- Pregnant patients with GBS bacteriuria in current pregnancy (those patients will be screened with a vaginal double swab upon admission to labor ward).
- Pregnant patients in preterm labor before 37 weeks (those patients will be screened with a vaginal double swab upon admission to labor ward).
- Pregnant patients with prolonged rupture of membranes (those patients will be screened with a vaginal double swab after 17 hours and prior to antibiotics treatment).
- All patients have signed an informed consent.
Who cannot join
- Pregnant patients that do not want to participate in the study.
- Pregnant patients that fever is the risk factor for GBS prophylaxis.
- Pregnant patients that were screened negative by a culture at 35-37 weeks.
- Pregnant patient with PPROM (before 34 weeks).
Trial locations and contacts
1 site in 1 country.
About this study
Official title: The Implementation of Real-time PCR for Detection of Intrapartum GBS (Group B Streptococcus) Colonization as a Way to Reduce Antibiotic Prophylaxis Usage
The implementation of real-time PCR for detection of intrapartum GBS (group B Streptococcus) colonization as a way to reduce antibiotic prophylaxis usage.
Read the detailed description
The investigators intend to perform a cohort prospective trial in the delivery ward of CARMEL medical center. Pregnant women that are admitted to our ward and need to receive GBS (group B Streptococcus) prophylaxis either due to a positive GBS culture screen done at 35-37 weeks or by having risk factors for prophylactic antibiotic treatment (prolonged rupture of membranes, preterm delivery, GBS bacteriuria during current pregnancy) will be tested by a double vaginal swab (PCR and culture). Pregnant women that were screened positive at 35-37 weeks, those who had GBS bacteriuria during pregnancy and those who labor prematurely will be tested upon admission. Patients that have prolonged rupture of membranes (18 hours) will be tested by a double vaginal swab after 17 hours and prior to antibiotics administration.
All patient will be treated with GBS prophylactic antibiotics according to the culture screen done at 35-37 weeks or by risk factors (current protocol guidelines). Culture and PCR will be sent to the lab and the results will be revealed after delivery (the staff and patients will be blinded to the results of the culture and PCR until after delivery) in order to assess the number of patients that were treated with antibiotics unnecessarily.
The investigators intend to recruit 300 patients of which half will need antibiotics because of a positive culture at 35-37 weeks and half because of having risk factors. We decided to omit patients that will have fever during labor (a risk factor that necessitates GBS prophylaxis) because these patients will receive broad spectrum antibiotics anyway.
The vaginal double swab will be assessed by two different lab tests: The first one for GBS culture on selective media after enrichment of 16h and the second swab by the Cepheid Xpert GBS Assay performed on the GeneXpert Dx system which is a qualitative in vitro diagnostic test designed to detect GBS DNA from vaginal swab specimens, using fully automated real-time polymerase chain reaction (PCR).
- Conditions
- GBS
- Being tested
- GBS vaginal double swab
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
GBS vaginal double swabOther
The vaginal double swab will be assessed by two different lab tests: The first one for GBS culture on selective media after enrichment of 16h and the second swab by the Cepheid Xpert GBS Assay performed on the GeneXpert Dx system which is a qualitative in vitro diagnostic test designed to detect GBS DNA from vaginal swab specimens, using fully automated real-time polymerase chain reaction (PCR).
| Study group | Role | What they receive |
|---|---|---|
| GBS screened positive | 150 patients that were screened positive by culture at 35-37 weeks gestational age. Receives: Other: GBS vaginal double swab | |
| GBS unknown with risk factors | 150 patients that were not screened for GBS and have risk factors for GBS prophylaxis. Receives: Other: GBS vaginal double swab |
What is being measured
The primary outcome is the main question the study is designed to answer.
intrapartum GBS PCR in patients that require GBS prophylaxis
The investigators intend to compare the number of patients that require GBS prophylaxis because they were screened positive (at 35-37 weeks) or have risk factors during labor (300 patients) to the number of patients that will be found positive on real time PCR upon admission to labor room. In that way the reduction (in percentage) for the need of GBS prophylaxis will be assessed.
Measured: The patients will be assessed once upon admission to labor room by having a double vaginal swab for GBS PCR and GBS culture
Secondary outcomes (1)
validity of GBS PCR
Each patient that will be recruited will be sampled vaginally by a double swab for PCR and culture for GBS. The investigators intend to compare the number positive results of PCR GBS to the number of positive culture results (which is considered gold standard) and in that way to determine the sensitivity and specificity of PCR for GBS.
Measured: The patients will be assessed once upon admission to labor room by having a double vaginal swab for GBS PCR and GBS culture
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted3 May 2019
- Study start1 Jun 2019
- Primary completion15 Aug 2020
- Study completion30 Aug 2020
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for GBSStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 303 participants (actual)
Sponsor and investigators
- Lead sponsor
- Carmel Medical Center
- Sponsor type
- University, hospital or other
- Collaborators
- Cepheid
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03936816
- Sponsor's protocol ID
- CMC-19-0027-CTIL
- Status last verified
- Sep 2020
- First submitted
- 8 Apr 2019
- Last updated
- 23 Sep 2020
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 23 Sep 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Implementation of Real-time PCR for Detection of Intrapartum GBS (Group B Streptococcus) Colonization as a Way to Reduce Antibiotic Prophylaxis Usage
- ClinicalTrials.gov ID
- NCT03936816
- Acronym / sponsor ID
- CMC-19-0027-CTIL
- Conditions
- GBS
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 303 participants (actual)
- Lead sponsor
- Carmel Medical CenterUniversity, hospital or other
- Collaborators
- Cepheid
- Study start
- 1 Jun 2019 (actual)
- Primary completion
- 15 Aug 2020 (actual)
- Study completion
- 30 Aug 2020 (actual)
- First posted
- 3 May 2019 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The implementation of real-time PCR for detection of intrapartum GBS (group B Streptococcus) colonization as a way to reduce antibiotic prophylaxis usage.
Detailed description
The investigators intend to perform a cohort prospective trial in the delivery ward of CARMEL medical center. Pregnant women that are admitted to our ward and need to receive GBS (group B Streptococcus) prophylaxis either due to a positive GBS culture screen done at 35-37 weeks or by having risk factors for prophylactic antibiotic treatment (prolonged rupture of membranes, preterm delivery, GBS bacteriuria during current pregnancy) will be tested by a double vaginal swab (PCR and culture). Pregnant women that were screened positive at 35-37 weeks, those who had GBS bacteriuria during pregnancy and those who labor prematurely will be tested upon admission. Patients that have prolonged rupture of membranes (18 hours) will be tested by a double vaginal swab after 17 hours and prior to antibiotics administration.
All patient will be treated with GBS prophylactic antibiotics according to the culture screen done at 35-37 weeks or by risk factors (current protocol guidelines). Culture and PCR will be sent to the lab and the results will be revealed after delivery (the staff and patients will be blinded to the results of the culture and PCR until after delivery) in order to assess the number of patients that were treated with antibiotics unnecessarily.
The investigators intend to recruit 300 patients of which half will need antibiotics because of a positive culture at 35-37 weeks and half because of having risk factors. We decided to omit patients that will have fever during labor (a risk factor that necessitates GBS prophylaxis) because these patients will receive broad spectrum antibiotics anyway.
The vaginal double swab will be assessed by two different lab tests: The first one for GBS culture on selective media after enrichment of 16h and the second swab by the Cepheid Xpert GBS Assay performed on the GeneXpert Dx system which is a qualitative in vitro diagnostic test designed to detect GBS DNA from vaginal swab specimens, using fully automated real-time polymerase chain reaction (PCR).
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| GBS screened positive | – | Other: GBS vaginal double swab150 patients that were screened positive by culture at 35-37 weeks gestational age. |
| GBS unknown with risk factors | – | Other: GBS vaginal double swab150 patients that were not screened for GBS and have risk factors for GBS prophylaxis. |
Who may qualify
- Ages
- 18 to 45 years
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult
- Study population
- A cohort of 300 patient admitted to the labor ward in CARMEL medical center that need prophylactic antibiotics for GBS because of culture screen at 35-37 weeks or because of having risk factors.
Key inclusion criteria (5 listed)
- Pregnant patients that were screened positive by a culture at 35-37 weeks (those patients will be screened with a vaginal double swab upon admission to labor ward).
- Pregnant patients with GBS bacteriuria in current pregnancy (those patients will be screened with a vaginal double swab upon admission to labor ward).
- Pregnant patients in preterm labor before 37 weeks (those patients will be screened with a vaginal double swab upon admission to labor ward).
- Pregnant patients with prolonged rupture of membranes (those patients will be screened with a vaginal double swab after 17 hours and prior to antibiotics treatment).
- All patients have signed an informed consent.
Key exclusion criteria (4 listed)
- Pregnant patients that do not want to participate in the study.
- Pregnant patients that fever is the risk factor for GBS prophylaxis.
- Pregnant patients that were screened negative by a culture at 35-37 weeks.
- Pregnant patient with PPROM (before 34 weeks).
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| GBS vaginal double swabThe vaginal double swab will be assessed by two different lab tests: The first one for GBS culture on selective media after enrichment of 16h and the second swab by the Cepheid Xpert GBS Assay performed on the GeneXpert Dx system which is a qualitative in vitro diagnostic test designed to detect GBS DNA from vaginal swab specimens, using fully automated real-time polymerase chain reaction (PCR). | Other | GBS screened positive, GBS unknown with risk factors |
Primary outcome
intrapartum GBS PCR in patients that require GBS prophylaxis
Time frame: The patients will be assessed once upon admission to labor room by having a double vaginal swab for GBS PCR and GBS culture
The investigators intend to compare the number of patients that require GBS prophylaxis because they were screened positive (at 35-37 weeks) or have risk factors during labor (300 patients) to the number of patients that will be found positive on real time PCR upon admission to labor room. In that way the reduction (in percentage) for the need of GBS prophylaxis will be assessed.
1 secondary outcome
validity of GBS PCR
Time frame: The patients will be assessed once upon admission to labor room by having a double vaginal swab for GBS PCR and GBS culture
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 23 Sep 2020.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of GBS, run by Carmel Medical Center at 1 site in Israel.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 23 Sep 2020. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Israel. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
intrapartum GBS PCR in patients that require GBS prophylaxis (time frame: The patients will be assessed once upon admission to labor room by having a double vaginal swab for GBS PCR and GBS culture). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 23 Sep 2020; AzTrials last refreshed its copy on 7 Nov 2026.