Streptococcus InfectionGBSNCT01445717
Rapid Diagnostic Test for Detection of Group B Streptococcus in Pregnancy
An observational study of Streptococcus Infection and Pregnancy, run by The University of Texas Health Science Center, Houston at 1 site in United States.
Trial summary
This study evaluates the use of a new method of growing and detecting Group B streptococcus in pregnant women. This new method utilizes sandwiched-membrane petri technology and has the advantage of detecting GBS in less than 6 hours, with less cost, and the potential of allowing antibiotic sensitivities to be… Read more about this study
- Who is it for?
- Ages 18 to 50 years, women onlyHealthy volunteers can take part
- Conditions the study is for
- Streptococcus Infection, Pregnancy
- How many people
- 358 participants
- Where
- 1 siteUnited States
- Study dates
- Nov 2010to Dec 2012
- 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 50 years
- Women only
- Healthy volunteers accepted
- Adult
Study population: Pregnant patients who present to the UT resident or attending clinic between 35-37 weeks for routine follow-up will be asked to enroll.
Who may be able to join
- > 18 years
- 35-37 weeks pregnancy
- Patient receiving prenatal care at UT Houston Hermann Memorial OB/Gyn resident or attending clinic.
Who cannot join
- Pt elects not to participate
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Use of a New Rapid Method, BioNanoPore, for Growth and Detection of Group B Streptococcus in Pregnant Patients
This study evaluates the use of a new method of growing and detecting Group B streptococcus in pregnant women. This new method utilizes sandwiched-membrane petri technology and has the advantage of detecting GBS in less than 6 hours, with less cost, and the potential of allowing antibiotic sensitivities to be performed.
Read the detailed description
Intrapartum infection with group B streptococci (GBS) may lead to untoward neonatal sequelae such as pneumonia, septicemia, and meningitis. Several clinical trials have demonstrated that the use of intrapartum intravenous antibiotic prophylaxis (with penicillin being the agent of choice due to a narrower spectrum of antimicrobial activity) is highly effective to prevent early-onset neonatal GBS infections. It has been estimated that 10% to 30% of all pregnant women are GBS carriers, and it is likely that GBS colonizes virtually every female at some point. Consensus guidelines from the Centers for Disease Control and Prevention (CDC), American College of Obstetricians and Gynecologists (ACOG), and the American Academy of Pediatrics, recommend prenatal screening at 35 to 37 weeks of gestation and chemoprophylaxis at delivery based upon this culture result. The CDC-recommended method for detecting GBS colonization involves collecting a combined vaginal and rectal specimen and culturing the organism in a selective broth medium, followed be subculturing onto blood agar plates.
However, this traditional method of culture takes up to 72 hours for results to be available. With 12.8% of patients experiencing a preterm delivery prior to when a GBS screening occurs, and up to 15% of term pregnancies not having routine GBS screening performed, a significant portion of women present with unknown GBS status at the time of potential delivery. These clinical situations require obstetricians to utilize a risk-based strategy that has been shown to be only half as effective as culture-based screening. Thus, a need exists for a rapid detection method for GBS.
Recent research has focused on polymerase chain reaction (PCR) based methods for detection of GBS. Sensitivity for detection of GBS by the PCR assay has ranged from 87% to 91%. These methods are limited by high cost, and inability to perform antibiotic sensitivities for GBS (in women with a penicillin allergy). New technologies, called bionanopore (BNP) and bionanofilter (BNF) are rapid, microbial detection systems that utilizes sandwiched-membrane petri technology. These have the advantage of detecting GBS in less than 6 hours, with less cost, and the potential of allowing antibiotic sensitivities to be performed.
- Conditions
- Streptococcus Infection, Pregnancy
- Keywords
- GBS, Streptococcus, ., Group B
- Medical subject headings
- Streptococcal Infections, Guillain-Barre Syndrome
What is being measured
The primary outcome is the main question the study is designed to answer.
Culture of Group B streptococcus
Rapid assay results will be compared to routine culture results.
Measured: 48 hours
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted4 Oct 2011 (estimated)
- Study startNov 2010
- Primary completionNov 2012
- Study completionDec 2012
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Streptococcus InfectionStudies of the same condition, open and under way.
- More trials run by The University of Texas Health Science Center, HoustonThe sponsor's other registered studies.
- 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
- 358 participants (actual)
Sponsor and investigators
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Jonathan P Faro, The University of Texas Health Science Center, Houston
- Investigators
- Jonathan Faro, MD, Principal investigator, The University of Texas Health Science Center, Houston
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01445717
- Sponsor's protocol ID
- HSC-MS-10-0317
- Acronym
- GBS
- Status last verified
- May 2013
- First submitted
- 30 Sep 2011
- Last updated
- 3 May 2013
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 3 May 2013. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Use of a New Rapid Method, BioNanoPore, for Growth and Detection of Group B Streptococcus in Pregnant Patients
- ClinicalTrials.gov ID
- NCT01445717
- Acronym / sponsor ID
- GBS / HSC-MS-10-0317
- Conditions
- Streptococcus Infection, Pregnancy
- Keywords
- GBS, Streptococcus, ., Group B
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 358 participants (actual)
- Lead sponsor
- The University of Texas Health Science Center, HoustonUniversity, hospital or other
- Study start
- Nov 2010
- Primary completion
- Nov 2012 (actual)
- Study completion
- Dec 2012 (actual)
- First posted
- 4 Oct 2011 (estimated)
- 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.
This study evaluates the use of a new method of growing and detecting Group B streptococcus in pregnant women. This new method utilizes sandwiched-membrane petri technology and has the advantage of detecting GBS in less than 6 hours, with less cost, and the potential of allowing antibiotic sensitivities to be performed.
Detailed description
Intrapartum infection with group B streptococci (GBS) may lead to untoward neonatal sequelae such as pneumonia, septicemia, and meningitis. Several clinical trials have demonstrated that the use of intrapartum intravenous antibiotic prophylaxis (with penicillin being the agent of choice due to a narrower spectrum of antimicrobial activity) is highly effective to prevent early-onset neonatal GBS infections. It has been estimated that 10% to 30% of all pregnant women are GBS carriers, and it is likely that GBS colonizes virtually every female at some point. Consensus guidelines from the Centers for Disease Control and Prevention (CDC), American College of Obstetricians and Gynecologists (ACOG), and the American Academy of Pediatrics, recommend prenatal screening at 35 to 37 weeks of gestation and chemoprophylaxis at delivery based upon this culture result. The CDC-recommended method for detecting GBS colonization involves collecting a combined vaginal and rectal specimen and culturing the organism in a selective broth medium, followed be subculturing onto blood agar plates.
However, this traditional method of culture takes up to 72 hours for results to be available. With 12.8% of patients experiencing a preterm delivery prior to when a GBS screening occurs, and up to 15% of term pregnancies not having routine GBS screening performed, a significant portion of women present with unknown GBS status at the time of potential delivery. These clinical situations require obstetricians to utilize a risk-based strategy that has been shown to be only half as effective as culture-based screening. Thus, a need exists for a rapid detection method for GBS.
Recent research has focused on polymerase chain reaction (PCR) based methods for detection of GBS. Sensitivity for detection of GBS by the PCR assay has ranged from 87% to 91%. These methods are limited by high cost, and inability to perform antibiotic sensitivities for GBS (in women with a penicillin allergy). New technologies, called bionanopore (BNP) and bionanofilter (BNF) are rapid, microbial detection systems that utilizes sandwiched-membrane petri technology. These have the advantage of detecting GBS in less than 6 hours, with less cost, and the potential of allowing antibiotic sensitivities to be performed.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 to 50 years
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Adult
- Study population
- Pregnant patients who present to the UT resident or attending clinic between 35-37 weeks for routine follow-up will be asked to enroll.
Key inclusion criteria (3 listed)
- > 18 years
- 35-37 weeks pregnancy
- Patient receiving prenatal care at UT Houston Hermann Memorial OB/Gyn resident or attending clinic.
Key exclusion criteria (1 listed)
- Pt elects not to participate
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Culture of Group B streptococcus
Time frame: 48 hours
Rapid assay results will be compared to routine culture results.
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 3 May 2013.
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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.
Jonathan Faro, MD principal investigator
The University of Texas Health Science Center, Houston
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 Streptococcus Infection and Pregnancy, run by The University of Texas Health Science Center, Houston at 1 site in United States.
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 3 inclusion and 1 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 3 May 2013. 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 United States. 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?
Culture of Group B streptococcus (time frame: 48 hours). 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 3 May 2013.