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| ID | Type | Description | Link |
|---|---|---|---|
| 2011-A01254-37 | Other Identifier | ID-RCB number, ANSM | |
| PHRC_N 2011N°19-22 | Other Identifier | PHRC number |
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| Name | Class |
|---|---|
| Ministry of Health, France | OTHER_GOV |
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Objective
To compare vaginal microbiota in the first trimester of pregnancy between spontaneous preterm and term deliveries
Material and methods Case-control study nested in a cohort of pregnant patients in the first trimester. Inclusion criteria. : case is defined as spontaneous preterm births between 22 and 36 weeks in one of the 14 centers. The "control" patient will be considered as the following delivery over ≥ 37 weeks in the same center.
Multiple pregnancies, medical interruptions of pregnancy and deaths in utero will be excluded. Regarding the vaginal flora of cases and controls, the microorganisms will be researched and quantified by molecular methods.
Expected results
Patients and control patients will be compared for their demographic, obstetric, clinical and microbiological data. The parameters related to the risk of spontaneous prematurity at the p <0.20 threshold will then be analyzed by multi-level logistic regression.
Implications At a time when the link between bacterial vaginosis and prematurity is controversial, the detection - or not - of microorganisms linked to the risk of prematurity will be a key issue.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Cases. Preterm Births | Microbiological and biological patterns on vaginal samples in the first trimester of pregnancy among spontaneous preterm births between 22 and 36 weeks |
| |
| Controls. Term Births | Microbiological and biological patterns on vaginal samples in the first trimester of pregnancy among deliveries over ≥ 37 weeks |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Microbiological and biological patterns on vaginal samples | Other | To compare the microbiological and biological patterns between groups |
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| Measure | Description | Time Frame |
|---|---|---|
| Vaginal Microbiota pattern | All microorganism potentially present in the vagina | 10 years |
| Measure | Description | Time Frame |
|---|---|---|
| Vaginal biological pattern | Biochemical and immunological compounds present in the vagina | 10 years |
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Inclusion Criteria:
Exclusion Criteria:
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Cohort of pregnant patients in the first trimester
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| Name | Affiliation | Role |
|---|---|---|
| Damien Subtil, MD,PhD | University Hospital, Lille | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Hôpital Jeanne de Flandres, CHRU | Lille | France |
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| ID | Term |
|---|---|
| D047928 | Premature Birth |
| D016585 | Vaginosis, Bacterial |
| ID | Term |
|---|---|
| D007752 | Obstetric Labor, Premature |
| D007744 | Obstetric Labor Complications |
| D011248 | Pregnancy Complications |
| D005261 | Female Urogenital Diseases and Pregnancy Complications |
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Vaginal samples with DNA of microorganisms
| D000091642 | Urogenital Diseases |
| D001424 | Bacterial Infections |
| D001423 | Bacterial Infections and Mycoses |
| D007239 | Infections |
| D014627 | Vaginitis |
| D014623 | Vaginal Diseases |
| D005831 | Genital Diseases, Female |
| D052776 | Female Urogenital Diseases |
| D000091662 | Genital Diseases |