ClinicalTrials.gg
Enrolling by invitationNCT06021964Updated Sep 1, 2023

Prospective Cohort Observational Study of Placenta Accreta Spectrum Disorders

An observational study in Placenta Accreta Spectrum Disorders,Previous Cesarean Section, sponsored by Guangzhou Medical University. Enrolling by invitation at 1 site in China. Open to female participants aged 18 Years to 45 Years. Per ClinicalTrials.gov, last updated 2023-09-01.

Sponsored by Guangzhou Medical University · Observational

From the registry’s dates

  • Primary completion was expected by Nov 2025, 11 months ago, but the record still lists the study as enrolling by invitation.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
1,000
Ages
18 Years to 45 Years
Sex
Female
01

Study summary

The incidence of placenta accreta spectrum disorders has shown an increasing trend worldwide due to the increase of cesarean section rate. Research on the outcomes of placenta accreta spectrum disorders primarily relies on retrospective analysis. The aim of this study was to establish a prospective, multicenter cohort in China in order to conduct further investigations on the clinical features, predictive capabilities, diagnostic methods, and pathogenesis of placenta accreta spectrum disorders.

02

Conditions studied

  • Placenta Accreta Spectrum Disorders,Previous Cesarean Section

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Keywords

  • placenta accreta spectrum disorders;Previous cesarean section
03

In context

Placenta Accreta

150 studies on the registry are indexed under Placenta Accreta; 40 are open to participants now.

This study's planned enrollment of 1,000 is above the median of 87 across 78 observational studies indexed under Placenta Accreta.

Browse Placenta Accreta studies →

Lead sponsor

Guangzhou Medical University is the lead sponsor of 40 studies on the registry; 21 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 45 Years
Sexes eligible
Female
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

Pregnant women aged 18-45 who at least had one previous cesarean section

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Pregnant women aged 18-45;
  2. at least one previous cesarean section ,regular antenatal examination and plan to give birth at research center
  3. sign

Exclusion criteria

Exclusion Criteria:

Irregular antenatal examination; Twins; diseases; Prepregnancy hypertension; Prepregnancy diabetes mellitus; Inheritance Sexual diseases; tumor; Abnormal liver and kidney function in early pregnancy

Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
1,000 participants (estimated)
Patient registry
No
06

What researchers measure

Primary outcomes

  1. Incidence of placenta accreta spectrum disorders

    Time frame: baseline

Secondary outcomes

  1. Preterm delivery Preterm delivery

    Time frame: baseline

  2. Blood lost during delivery

    Time frame: baseline

  3. Blood loss in the first 24 hours of delivery

    Time frame: baseline

  4. hysterectomy

    Time frame: baseline

  5. Blood transfusion

    Time frame: baseline

07

Study locations

1 site
  • Department of Obstetrics and Gynecology, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology,The Third Affiliated Hospital of Guangzhou Medical University
    Guangzhou, 510150, China
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Aug 2023; primary completion for Nov 2025, 27 months later.

Of 34 observational studies under Placenta Accreta, half reached primary completion within 18 months of starting (the median), counting those still running; a quarter within 12 and three quarters within 35. This study's planned 27 months is above that.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 27, 2023
First posted
Sep 1, 2023
StartEst.
Aug 28, 2023
Primary completionEst.
Nov 30, 2025
CompletionEst.
Dec 7, 2025
Last update
Sep 1, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 1, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06021964
Lead sponsor
Guangzhou Medical University
Collaborators
Peking University Third Hospital, Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Peking Union Medical College Hospital, TONGJI MEDICAL COLLEGE OF HUST, First Affiliated Hospital of Chongqing Medical University, West China Second University Hospital,Sichuan University / West China women's and children's Hospital, Peking University First Hospital
Responsible party
Dunjin Chen (Department of Gynecology and Obstetrics, the Third Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University) — Principal investigator
First posted
Sep 1, 2023
Start date
Aug 28, 2023 (estimated)
Primary completion
Nov 30, 2025 (estimated)
Completion
Dec 7, 2025 (estimated)
Last update
Sep 1, 2023

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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No contact was published for this record. The registry link below has the sponsor’s details.

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