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Assessment of Biomarkers in Pregnancy on Unknown Location and Ectopic Pregnancy

Assessment of Biomarkers in Pregnancy on Unknown Location and Ectopic Pregnancy

Status
UNKNOWN
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT04738370
Acronym
ABPEP
Enrollment
1000
Registered
2021-02-04
Start date
2014-12-08
Completion date
2024-12-31
Last updated
2022-04-01

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

Conditions

Early Pregnancy, Early Pregnancy Loss, Ectopic Pregnancy, Pregnancy of Unknown Location

Brief summary

To further develop the patient care pathway for women classified with a pregnancy of unknown location (PUL) and ectopic pregnancy (EP).

Detailed description

Purpose and design-There is a need for the patient care pathway to evolve in order to aid and improve the diagnosis and management of women with a pregnancy of unknown location (PUL) and ectopic pregnancy (EP). There is potential for this to be achieved by the incorporation of a statistical model that uses one or more novel markers identified by this study. Recruitment-1000 patients. Inclusion: Patients attending the Early Pregnancy Unit (EPU) in the first trimester with a PUL or ectopic pregnancy on trans-vaginal ultrasound scan between the ages of 18-50 years. Exclusion: Patients diagnosed with cancer, presence of acute medical condition, patients aged less than 18 years, patients who cannot give fully informed study consent. Consent - Posters will advertise the study. Patients in EPU will be invited to the study by a member of the clinical care team. Written consent will be required. Confidentiality - The Chief Investigator will preserve the confidentiality of participants taking part in the study and is registered under the Data Protection Act. Patient consent forms will be stored securely within the study file. All patient identifiable information, where required, will be stored electronically on National Health Service (NHS) approved computers, accessible only by personnel involved in the study via password. Conflict of interest - None involved in the study have a conflict of interest. Dissemination of results - No patient identifiable information will be included in the research report or publication. Anonymised results will be disseminated to scientific community by means of publication in peer-reviewed literature and presented at national and international meetings.

Interventions

OTHERSample collection

Bloods +/- urine +/- vaginal swabs taken

Sponsors

Imperial College Healthcare NHS Trust
CollaboratorOTHER
Imperial College London
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 50 Years
Healthy volunteers
Yes

Inclusion criteria

* Patients attending the Early Pregnancy Unit in the first trimester of pregnancy (≤14 weeks gestation) aged between 18-50 years old and categorized as having a PUL or ectopic pregnancy

Exclusion criteria

* Younger than 18 years of age * Women who in the opinion of the researcher by virtue of language or learning impairment would be unable to give fully informed consent to the study * Viable intrauterine pregnancy (the presence of a fetal pole with a fetal heartbeat within the uterine cavity) * Miscarriage * Presence of an acute medical condition

Design outcomes

Primary

MeasureTime frameDescription
PUL outcome prediction7 yearsThe number of PUL patients correctly categorised as 'low risk' or 'high risk' based on the new logistical regression model

Secondary

MeasureTime frameDescription
Urine BhCG and Ectopic pregnancy7 yearsThe number of ectopic pregnancies correctly risk stratified as being suitable for expectant or medical management based on the interpretation of urine (rather than serum) BhCG
Plasma and Serum and PUL7 yearsWhether novel biomarkers present in serum and/or plasma and/or urine may have predictive value in determining 'low risk' versus 'high risk' PUL
Plasma and Serum and Ectopic pregnancy7 yearsWhether novel biomarkers present in serum and/or plasma and/or urine may have predictive value in determining which women diagnosed with an ectopic pregnancy are suitable for expectant or medical management
Urinary BhCG and PUL7 yearsThe number of PUL patients correctly categorised as 'low risk' or 'high risk' based on the interpretation of urine (rather than serum) BhCG
Novel biomarkers7 yearsWhether a novel candidate metabolite may have predictive value in determining 'low risk' versus 'high risk' PUL
Other novel biomarkers7 yearsWhether a novel candidate metabolite may have predictive value in determining which women diagnosed with an ectopic pregnancy are suitable for expectant or medical management
BhCG timing7 yearsWhether the timing of serial BhCG measurements has a significant impact on the risk stratification of PUL patients

Countries

United Kingdom

Contacts

Primary ContactTom Bourne, MBBS, PhD, MRCOG
t.bourne@ic.ac.uk0044 203 313 5131
Backup ContactChristopher Kyriacou, MBBS, BSc
Christopher.kyriacou@nhs.net0044 203 313 5131

Outcome results

None listed

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