Clinical trial Recruiting at 27 sites Phase 1 Interventional Ages 15 and up

Safety and tolerability of XmAb541 in patients with advanced solid tumors

Official title: A Phase 1, First-in-Human, Dose Escalation and Expansion Study to Evaluate the Safety and Tolerability of XmAb541 in Advanced Solid Tumors

Run by Xencor, Inc. · NCT06276491 · Data updated 2026-11-12

This study is testing a new drug called XmAb541 to see if it's safe and how well it works for people with advanced solid tumors like ovarian and endometrial cancer.

More Ovarian Cancer trials

Quick facts

PhasePhase 1
Study typeInterventional
Ages15 Years and up
SexAll
Enrollment282 (estimated)
SponsorXencor, Inc.
Industry-sponsored
Drugs / interventionsprednisone
Locations27 sites (Duarte, California and 26 other locations)
StatusRecruiting
StartedApril 4, 2024
Main results expectedDecember 2027
Study endsDecember 2028
Registry record updatedOctober 9, 2026
Trial IDNCT06276491 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are adults aged 18 and older with CLDN6+ tumors who have exhausted standard therapies and have documented progressive disease.

Probably not a fit

Patients with platinum refractory ovarian cancer or those who have previously been treated with a CLDN6 targeting product 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 evaluates the safety and tolerability of the investigational drug XmAb541 in patients with advanced solid tumors, specifically targeting ovarian cancer, endometrial cancer, and various germ cell tumors. The study aims to determine the optimal and safe dosage of XmAb541 while assessing its effects on tumor outcomes. Participants will be closely monitored for any adverse effects and overall response to the treatment.

Why it matters

Potential benefit: If successful, this study could provide a new treatment option for patients with advanced solid tumors that are difficult to treat.

How similar studies have gone: While this approach is novel in targeting CLDN6, similar studies targeting other tumor markers have shown promise in treating advanced cancers.

Who can join: the full rules

Show full inclusion / exclusion criteria
Key Inclusion Criteria:

* Age ≥ 18 years. For US only: subjects with GCTs, age ≥15 years
* CLDN6+ tumor
* Histological or cytological documentation of locally advanced, recurrent, or metastatic ovarian, fallopian tube, or peritoneal cancer, adenocarcinoma of the endometrium (endometrial cancer, uterine cancer, or carcinoma of the uterine corpus), GCT resistant to previous treatment
* Adequate Eastern Cooperative Oncology Group performance status
* Life expectancy ≥ 3 months
* Adequate liver, kidney, and bone marrow function

Key Exclusion Criteria:

* Participants with untreated brain metastases are excluded. Participants with treated brain metastases may participate, provided they are radiologically stable.
* Active known or suspected autoimmune disease
* Have any condition requiring systemic treatment with corticosteroids, prednisone equivalents, or other immunosuppressive medications within 14 days prior to first dose of study drug
* Clinically significant cardiovascular, pulmonary or gastrointestinal disease
* Active hepatitis B or hepatitis C

Where it's running

  • City of Hope
    Duarte, California, United States
    Recruiting
  • Stanford University
    Palo Alto, California, United States
    Recruiting
  • University of California San Francisco
    San Francisco, California, United States
    Recruiting
  • Moffitt Cancer Center
    Tampa, Florida, United States
    Recruiting
  • Winship Cancer Institute, Emory University
    Atlanta, Georgia, United States
    Recruiting
  • University of Chicago Medical Center
    Chicago, Illinois, United States
    Recruiting
Show 21 more locations
  • Indiana University Melvin and Bren Simon Comprehensive Cancer Center
    Indianapolis, Indiana, United States
    Recruiting
  • Karmanos Cancer Institute
    Detroit, Michigan, United States
    Recruiting
  • University of Minnesota
    Minneapolis, Minnesota, United States
    Recruiting
  • The John Theurer Cancer Center at Hackensack University Medical Center
    Hackensack, New Jersey, United States
    Recruiting
  • Icahn School of Medicine at Mount Sinai
    New York, New York, United States
    Recruiting
  • Montefiore Einstein Comprehensive Cancer Center
    The Bronx, New York, United States
    Recruiting
  • The Ohio State University
    Columbus, Ohio, United States
    Recruiting
  • OU Health Stephenson Cancer Center
    Oklahoma City, Oklahoma, United States
    Recruiting
  • UPMC Hillman Cancer Center
    Pittsburgh, Pennsylvania, United States
    Recruiting
  • SCRI Oncology Partners
    Nashville, Tennessee, United States
    Recruiting
  • University of Virginia
    Charlottesville, Virginia, United States
    Recruiting
  • AZ Groeninge
    Kortrijk, Belgium
    Recruiting
  • UZ Leuven
    Leuven, Belgium
    Recruiting
  • CHU de Liege
    Liège, Belgium
    Recruiting
  • Herlev Gentofte Hospital
    Herlev, Denmark
    Recruiting
  • Centre Hospitalier Lyon-Sud
    Pierre-Bénite, France
    Recruiting
  • NEXT Oncology - Hospital Quironsalud
    Barcelona, Spain
    Recruiting
  • Clinical Universidad de Navarra
    Madrid, Spain
    Recruiting
  • NEXT Oncology - Hospital Quironsalud
    Madrid, Spain
    Recruiting
  • Clinical Universidad de Navarra
    Pamplona, Spain
    Recruiting
  • The Christie NHS Foundation Trust
    Manchester, United Kingdom
    Recruiting

Study contacts

Similar studies

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

  • CR-002 study in adults with advanced solid tumors

    This trial tests CR-002 as a single therapy to see if it is safe and tolerable in adults with locally advanced or metastatic solid tumors

    Recruiting at 3 sites Phase 1/2 Crescent Biopharma, Inc. · Austin, Texas and 2 other locations · NCT07909031

  • Methylation markers in self-samples to help detect gynecological cancers

    This study tests whether self-collected urine and vaginal samples can reveal DNA methylation or other genetic markers that indicate endometrial, ovarian, vulvar, or vaginal cancers in women who are at risk or have postmenopausal bleeding.

    Recruiting Universiteit Antwerpen · Edegem, Antwerp · NCT07902375

  • Radiotherapy for gynecologic cancer with up to 10 metastatic sites

    This registry follows adults with gynecologic cancer who have 1 to 10 active metastatic lesions and are treated with radiotherapy as part of routine care to see how such treatments work in real-world settings.

    Recruiting Affidea Nu-med Center of Oncological DIagnostics and Therapy · Zamość · NCT07883798

  • Stellate ganglion block and dexmedetomidine for better sleep after gynecologic laparoscopy

    The study tests whether giving a preoperative stellate ganglion block plus intraoperative dexmedetomidine improves sleep after laparoscopic gynecologic surgery in women.

    Recruiting The Second People's Hospital of Huai'an · Huai'an, Jiangsu · NCT07860203

  • TS-104: a first-in-human, dose-escalation study for advanced solid tumors

    This study tests TS-104, a peptide-drug conjugate, as a single therapy in adults with advanced solid tumors like NSCLC, HNSCC, esophageal, gastric, ovarian, or endometrial cancer to see if it is safe and tolerable and whether it shows any benefit.

    Recruiting at 3 sites Phase 1 TwoStep Therapeutics, Inc. · Maumee, Ohio and 2 other locations · NCT07814248

  • ARR-002 in advanced ovarian or endometrial cancer

    This phase 1 study tests ARR-002 to see if it is safe and tolerable in adults with advanced or metastatic ovarian or endometrial cancer who have limited treatment options.

    Recruiting at 6 sites Phase 1 ArriVent BioPharma, Inc. · Orlando, Florida and 5 other locations · NCT07755436

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.