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Perinatal Consequences of Endometriosis

Perinatal Consequences of Endometriosis: Multicenter Prospective Comparative Study

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02498691
Acronym
ENDOBST
Enrollment
1444
Registered
2015-07-15
Start date
2016-02-04
Completion date
2019-02-01
Last updated
2025-09-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Endometriosis

Keywords

endometriosis, preterm delivery, caesarean, Pregnancy outcomes of women with or without endometriosis

Brief summary

Endometriosis is a benign gynecological disease, characterized by the presence of endometrium-like tissue outside the uterine cavity that affect up to 10-15% of women in reproductive age worldwide, with an extensive impact on women's wellbeing and their reproductive life. Endometriosis lesions are heterogeneous and three phenotypes of the disease are well recognized and are fundamentally different from each other: superficial peritoneal endometriosis (peritoneal implants), ovarian endometrioma (cyst ovarian endometriosis), and deeply infiltrating endometriosis (invasive nodules greater than 5 mm). The investigators performed a prospective multicenter comparative study to assess the maternal and fetal risks related to endometriosis during pregnancy, regarding disease phenotype, This study will evaluate with sufficient power the risk of prematurity and obstetrical complications associated with endometriosis according to disease phenotype. This study aims to provide new informations to pregnant women with endometriosis, guide the monitoring of pregnancy, optimize management strategies based on the nature of complications and ultimately to improve the health of women and their unborn child

Detailed description

Design selected and justification: the study ENDOBST is a * exposed / unexposed type * in superiority * with two comparative groups (endometriosis / without endometriosis) * Ratio of distribution of subjects in study groups = 1: 2 ENDOBST is a comparative prospective multicenter study presentation exposed - unexposed type. The study aims to compare the outcomes of pregnancy in the whole exposed group to controls and then according to the three disease phenotype (superficial, ovarian, and deep endometriosis). Endobst aims to test the hypothesis that women with endometriosis have an increased risk of preterm delivery (primary endpoint) and an increased risk of pregnancy complications (secondary endpoints) when compared to diseases-free women. Comparisons will be performed according to disease phenotype. These analyzes will be conducted after taking into account factors likely to influence the occurrence of preterm birth such as particularly social characteristics (education level, employment status), age and body mass index of women, pathological medical and obstetrical history and behavioral factors (tobacco). Secondary analyzes will be conducted to investigate the link between endometriosis, and other adverse pregnancy outcomes (premature rupture of membranes, intrauterine growth restriction), complications related to the surgical treatment endometriosis prior to pregnancy. Regarding the previous surgical treatment, the subgroup of women operated for their endometriosis will be compared to the subgroup of non-operated endometriosis in women and free subset of women. Particular attention will be paid to the phenotype of endometriosis and the nature of previous surgical treatment for pregnancy to control bias indication inherent in observational studies. These associations will be studied from multivariate regression models.

Interventions

BIOLOGICALBiological collection

Blood and saliva samples, placenta and cord blood collection

Sponsors

URC-CIC Paris Descartes Necker Cochin
CollaboratorOTHER
Assistance Publique - Hôpitaux de Paris
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patient major * Single Pregnancy * Patient followed before 22 SA and giving birth in the maternity ward in the study * Affiliated to health care

Exclusion criteria

* Opposition to the use of personal medical data or medical data of their child for research purposes * Pregnant women with multiple pregnancies * HIV positive women * Patients addressed in the center as part of a transfer in utero. * Women whose pregnancy is complicated by a spontaneous miscarriage before 15 weeks

Design outcomes

Primary

MeasureTime frameDescription
Number of preterm deliveryat Day 0 until 26 weeksEach delivery greater than or equal to 22 weeks and less than 37 weeks

Secondary

MeasureTime frame
number of caesareanat 11 weeks until 31 weeks
premature rupture of membranesat Day 0 until 26 weeks
fetal lossat Day 0 until 11 weeks
postpartum hemorrhageat 11 weeks until 31 weeks
induced or spontaneous preterm birthat Day 0 until 26 weeks
preeclampsiaat Day 0 until 31 weeks
placenta previaat Day 0 until 31 weeks
intrauterine growth restrictionat Day 0 until 31 weeks

Countries

France

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026