Evaluating outcomes in low-risk endometrial cancer with isolated tumor cells in lymph nodes

Outcomes of Low-Risk Endometrial Cancer With Isolated Tumor Cells in the Sentinel Lymph Nodes: a Prospective Multicenter Single-Arm Observational Study

Mayo Clinic · NCT06689956

This study is trying to see if patients with low-risk endometrial cancer who have isolated tumor cells in their lymph nodes have a higher chance of cancer coming back compared to similar patients without those cells.

Quick facts

Study typeObservational
Enrollment212 (estimated)
SexAll
SponsorMayo Clinic (other)
Drugs / interventionschemotherapy
Locations20 sites (Rochester, Minnesota and 19 other locations)
Trial IDNCT06689956 on ClinicalTrials.gov

What this trial studies

This observational study aims to assess whether patients with low-risk endometrial cancer who have isolated tumor cells in their sentinel lymph nodes experience worse recurrence-free survival compared to a historical cohort of similar patients with negative lymph nodes. The study involves collecting tissue samples and reviewing medical records to gather data on patient outcomes. By focusing on specific criteria such as tumor grade and lymphovascular space invasion, the study seeks to provide insights into the prognostic significance of isolated tumor cells in this patient population.

Who should consider this trial

Good fit: Ideal candidates include patients diagnosed with low-risk endometrial cancer, specifically FIGO Grade 1 or 2, who have isolated tumor cells in their sentinel lymph nodes.

Not a fit: Patients with prior neoadjuvant chemotherapy, those planning to receive adjuvant treatment, or those with more extensive disease in their lymph nodes will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could help refine treatment strategies for patients with low-risk endometrial cancer, potentially leading to better management and outcomes.

How similar studies have performed: Other studies have explored the significance of isolated tumor cells in various cancers, suggesting that this approach may yield valuable insights, although this specific focus on low-risk endometrial cancer is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Low-risk endometrial cancer, defined as endometrioid, grade 1 or 2, International Federation of Gynecology and Obstetrics (FIGO) 2009 stage IA (FIGO 2023 stages IA1 and IA2), without substantial/extensive LVSI (≥ 5 vessels involved) at final pathology. Patients with focal LVSI (\< 5 vessels involved) will be included.

  * Complete surgical staging, including pelvic sentinel lymph node (SLN) biopsy per National Comprehensive Cancer Network (NCCN) guidelines and ultrastaging.
  * Extent of disease in SLN: ITC (defined as tumor cell aggregates ≤ 0.2 mm or \< 200 cells)
  * No adjuvant treatment after surgery
  * Research consent provided.

Exclusion Criteria:

* Prior neoadjuvant chemotherapy.

  * Planning to receive adjuvant treatment.
  * Presence of synchronous cancer (excluding non-melanoma skin cancer).
  * Extent of disease in SLN: micrometastasis (\> 0.2 to ≤ 2.0 mm) or macrometastasis (\> 2.0 mm).
  * Presence of substantial/extensive LVSI (≥ 5 vessels involved) at final pathology.
  * Prior invasive cancer diagnosis within 5 years of study entry (excluding non-melanoma skin cancer).

Where this trial is running

Rochester, Minnesota and 19 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: FIGO Grade 1 Endometrial Endometrioid Adenocarcinoma, FIGO Grade 2 Endometrial Endometrioid Adenocarcinoma, Stage IA1 Endometrial Cancer FIGO 2023, Stage IA2 Endometrial Cancer FIGO 2023

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.