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Hormone blockers and letrozole tested to spare uterus in early endometrial cancer

NCT ID NCT06379113

Disease control Sponsor: Xiaojun Chen Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Sep 10, 2026 · Last updated Sep 11, 2026 · Updated 1 time

Summary

Researchers are testing a combination of a gonadotropin-releasing hormone agonist injection and the drug letrozole in obese women with early-stage endometrial cancer that has not responded to progestin. The goal is to see if this hormone-blocking approach can shrink tumors and allow women to avoid surgery, preserving fertility. Participants receive the injection every four weeks for up to six courses, plus daily letrozole, with regular checks to measure response.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
A gonadotropin-releasing hormone agonist injection combined with the oral drug letrozole
What this could lead to
If it works, this combination could offer women with early endometrial cancer a way to clear the disease without surgery, preserving the uterus and fertility.
What could go wrong
The trial is small and early, so results may not hold in larger groups. Hormone-blocking treatment can cause menopause-like side effects, and some cancers may not respond.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 2/3

Runs two stages together: whether the treatment works, then large-scale confirmation.

Participants

About 29 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jul 2022

Expected to finish

Mar 2028

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 45 years

Sex

Female participants only

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Have a confirmed initial pathological diagnosis based upon hysteroscopy: histologically prove well-differentiated EEC G1 without myometrial invasion * BMI≥30kg/m2 * No signs of suspicious extrauterine involvement on enhanced magnetic resonance imaging (MRI) or enhanced computed tomography (CT) or ultrasound * Using progestin, any of the following therapy, as first-line treatment: 1. Megestrol acetate ≥ 160 mg qd using, combined with Levonorgestrel Lntrauterine System (LNG-IUS) inserted or not 2. Medroxyprogesterone acetate ≥ 250 mg qd using, combined with LNG-IUS inserted or not 3. LNG-IUS inserted * Progestin-insensitive: 1. remained with stable disease after 7 months of progestin use 2. did not achieve CR after 10 months of progestin use * Have a desire for remaining reproductive function or uterus * Good compliance with adjunctive treatment and follow-up Exclusion Criteria: * Combined with severe medical disease or severely impaired liver and kidney function * Pathologically confirmed as endometrial cancer with suspicious myometrial invasion or extrauterine metastasis * Patients with other types of endometrial cancer or other malignant tumors of the reproductive system * Patients with breast cancer or other hormone- dependent tumors or diseases that cannot be used with GnRHa or Letrozole * Strong request for uterine removal or other conservative treatment * Known or suspected pregnancy * Acute severe disease such as stroke or heart infarction or a history of thrombosis disease * Smoker(\>15 cigarettes a day)

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Conditions

The condition(s) this trial relates to.

atypical endometrial hyperplasia endometrial endometrioid adenocarcinoma Endometrial Hyperplasia endometrium neoplasm Obesity obesity disorder progesterone resistance

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Atypical endometrial hyperplasia Endometrial neoplasms Obesity Progesterone resistance

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    2 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Obstetrics and Gynecology Hospital, Fudan University

    RECRUITING

    Shanghai, China

  • Tenth People's Hospital of Tongji University

    RECRUITING

    Shanghai, Shanghai Municipality, China

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