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Not yet recruitingNCT06677242SEICUpdated Feb 10, 2025

Serous Endometrial Intraepithelial Carcinoma (SEIC): Prospective Registration Study

An observational study in Serous Endometrial Intraepithalial Carcinoma and SEIC, sponsored by Erasmus Medical Center. Not yet recruiting at 1 site in Netherlands. Open to female participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-02-10.

Sponsored by Erasmus Medical Center · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
100
Ages
18 Years and older
Sex
Female
01

Study summary

Background: Serous endometrial intra-epithelial carcinoma (SEIC) is a rare condition affecting the lining of the uterus. It's a pre-cancerous change that might lead to cancer if not treated. Doctors aren't sure of the best way to manage it because it's so uncommon. A previous study looked at past cases in the Netherlands from 2012 to 2020. This study found that none of the 23 women with SEIC had their cancer spread during surgery, and none had a recurrence in the following three years. This suggests that a simpler surgery might be safe for patients with SEIC.

Methods: Information on disease details from patients who agree to participate in our study will be collected. All participants will fill out online forms and health questionnaires at several points: when they join the study, and again at six months, two years, and five years after their diagnosis. During the years after diagnosis, various details like health status, test results, treatments will be checked in the electronic medical record.

Results: This study is just starting, with the first patients expected to join on January 1, 2025.

Conclusion: A large international study is created to track SEIC patients over time. This will help us learn more about the condition and improve treatment strategies.

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Conditions studied

  • Serous Endometrial Intraepithalial Carcinoma
  • SEIC

Keywords

  • Sereus endometrial intraepithelial carcinoma
  • SEIC
  • Endometrial cancer
  • Premalignant neoplasms
03

In context

Carcinoma

6,741 studies on the registry are indexed under Carcinoma; 1,161 are open to participants now.

This study's planned enrollment of 100 is below the median of 149 across 1,175 observational studies indexed under Carcinoma.

Browse Carcinoma studies →

Lead sponsor

Erasmus Medical Center is the lead sponsor of 466 studies on the registry; 179 are open to participants now.

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

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
Female
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Women with serous endometrial intra-epithelial carcinoma

Inclusion criteria

  • Serous endometrial intra-epithelial carcinoma (SEIC).
  • Women older than 18 years of age.
  • Women with understanding of Dutch or English language in reading and writing.

Exclusion criteria

Exclusion Criteria:

  • Diagnosis with a different type of endometrial neoplasm or invasive carcinoma.
  • Previous and/or current treatment for another malignancy (\<2 year before diagnosis of SEIC).
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Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
100 participants (estimated)
Target follow-up
5 Years
Patient registry
Yes
Biospecimen retention
Samples with dna

Interventions

  • Diagnostic testBlood sample (serum) for circulating tumor DNA and cervical smear for genome-wide methylation sequencing

    These are additional tests, added to the observational study to collect information on tumor characteristics and to pursue early detection of this diagnosis.

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What researchers measure

Primary outcomes

  1. Progression-free survival

    Survival without recurrence of endometrial neoplasm

    Time frame: 5 years

Secondary outcomes

  1. Overall survival

    Time frame: 5 years

  2. Health-related quality of life

    Assessed through EORTC questionnaires Assessed through three different questionnaires: EORTC-QLQ-C30 + QLQ-EN24 (together a total of 54 multiple-choice questions with a scale of 1-4 of severity of complaints) and EQ-5D-5L (multiple-choice, scale of severity, all different items will be entered in the digital database)

    Time frame: 5 years

  3. Adverse events

    Any adverse event related to the treatment of SEIC

    Time frame: 5 years

07

Study locations

1 site
  • Franciscus Gasthuis & Vlietland
    Rotterdam, Zuid Holland 3045PM, Netherlands
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References and documents

Publications

  • Slaager C, Hofhuis W, Hoogduin KJ, Ewing-Graham PC, van Beekhuizen HJ. Serous endometrial intra-epithelial carcinoma: an observational study. Int J Gynecol Cancer. 2023 Jun 5;33(6):905-914. doi: 10.1136/ijgc-2023-004281. PubMed 37130624 ↗

Individual participant data

Plan to share: Undecided

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 10, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT06677242
Lead sponsor
Erasmus Medical Center
Responsible party
Ciska Slaager (MD, PhD student and resident in gynaecology, Erasmus Medical Center) — Principal investigator
First posted
Nov 6, 2024
Start date
Apr 1, 2025 (estimated)
Primary completion
Apr 1, 2035 (estimated)
Completion
Apr 1, 2035 (estimated)
Last update
Feb 10, 2025

Study contacts

Ciska Slaager
Contact
ciskaslaager@gmail.com
+31652377107
Heleen J. van Beekhuizen
principal investigator · Erasmus Medical Center, Cancer Institute

Oversight

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

Not currently enrolling

This study is not yet recruiting, as verified in Feb 2025. You cannot join it, but the record below documents what was studied.

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