Clinical trial Recruiting at 1 site Phase 1 Interventional Ages 18 and up Women only

Combining ONC201 and Atezolizumab for treating obesity-related endometrial cancer

Official title: Phase 1 Clinical Trial of ONC201 and Atezolizumab in Obesity-Driven Endometrial Cancer

Run by UNC Lineberger Comprehensive Cancer Center · NCT05542407 · Data updated 2026-11-12

This study is testing a new treatment for advanced or recurrent endometrial cancer in obese women by combining two drugs, ONC201 and atezolizumab, to see if it helps manage their cancer better.

More Metastasis trials

Quick facts

PhasePhase 1
Study typeInterventional
Ages18 Years and up
SexWomen only
Enrollment58 (estimated)
SponsorUNC Lineberger Comprehensive Cancer Center
Academic / other
Drugs / interventionschemotherapy, methotrexate, cyclophosphamide, atezolizumab, radiation
Locations1 site (Chapel Hill, North Carolina)
StatusRecruiting
StartedOctober 23, 2023
Main results expectedFebruary 21, 2028
Study endsJuly 31, 2028
Registry record updatedJanuary 29, 2026
Trial IDNCT05542407 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are adult women aged 18 and older with histologically confirmed metastatic or recurrent endometrial cancer who have experienced disease progression after prior treatments.

Probably not a fit

Patients with early-stage endometrial cancer or those who have not undergone prior systemic therapy may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial aims to evaluate the safety of a new treatment approach for endometrial cancer by combining two drugs, ONC201 and atezolizumab, specifically for obese women. Given the rising incidence and mortality of endometrial cancer, particularly among obese patients, this study seeks to provide an alternative treatment option for those with advanced or recurrent disease. Participants will receive the treatment based on their body weight, and the study will assess the effectiveness of this combination in managing the cancer. The trial is particularly focused on patients who have shown disease progression after standard therapies.

Why it matters

Potential benefit: If successful, this study could offer a new treatment option for obese women suffering from advanced endometrial cancer.

How similar studies have gone: While the combination of ONC201 and atezolizumab has not been previously tested for endometrial cancer, similar approaches in other cancers have shown promise.

Who can join: the full rules

Show full inclusion / exclusion criteria
In order to participate in this study a subject must meet all of the eligibility criteria outlined below.

Inclusion Criteria

1. Ability to understand and willingness to sign a written informed consent obtained to participate in the study and HIPAA authorization for release of personal health information.
2. Age ≥ 18 years at the time of consent.
3. ECOG Performance Status of 0, 1, or 2
4. Histologically confirmed metastatic or recurrent EC (endometrioid, carcinosarcoma, serous, clear cell, adeno-squamous and mixed histologies).
5. Subjects must have measurable disease, defined as at least one lesion that can be accurately measured in at least one dimension in accordance with RECIST criteria
6. Must have radiographic disease progression after at least 1 line of systemic cytotoxic therapy for metastatic disease or with progression within 12 months of completing adjuvant chemotherapy.
7. Life expectancy of at least 3 months.
8. Demonstrate adequate organ function as defined in the table below; all screening labs to be obtained within 72 hours prior to initiating study treatment.

Exclusion Criteria

1. Prior treatment with ONC201.
2. Prior treatment with CD137 agonists or immune checkpoint blockade therapies, including antiCTLA-4, and anti PD-L1 therapeutic antibodies
3. Treatment with another investigational agent or participation in another clinical trial within the last 28 days prior to initiating protocol therapy.
4. Subjects who have had chemotherapy or radiotherapy within 4 weeks prior to study treatment or those who have not recovered from adverse events due to agents administered more than 4 weeks prior to initiating protocol therapy.
5. Treatment with therapeutic oral or IV antibiotics within 2 weeks prior to initiation of protocol therapy Subjects receiving prophylactic antibiotics (e.g., to prevent a urinary tract infection or chronic obstructive pulmonary disease exacerbation) are eligible for the study.
6. Treatment with systemic immunostimulatory agents (including, but not limited to, interferon and interleukin 2 \[IL-2\]) within 4 weeks or 5 half-lives of the drug (whichever is longer) prior to initiation of protocol therapy.
7. Treatment with systemic immunosuppressive medication (including, but not limited to, corticosteroids, cyclophosphamide, azathioprine, methotrexate, thalidomide, and anti TNF-agents) within 2 weeks prior to initiation

Where it's running

  • Lineberger Comprehensive Cancer Center
    Chapel Hill, North Carolina, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.