Phase 1, Safety and Tolerability Study of XmAb541 in Advanced Solid Tumors

NCT ID: NCT06276491

Last Updated: 2025-08-07

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE1

Total Enrollment

212 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-04-04

Study Completion Date

2028-12-31

Brief Summary

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The primary purpose of this study is to determine whether the investigational drug XmAb541 is safe and well tolerated, and to determine an optimal and safe dose(s) for further study. The study will also evaluate the effect of XmAb541 on tumor outcomes.

Detailed Description

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Conditions

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Ovarian Cancer Endometrial Cancer Germ Cell Tumor Testicular Germ Cell Tumor Ovarian Germ Cell Tumor

Study Design

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Allocation Method

NA

Intervention Model

SEQUENTIAL

Dose escalation and expansion study
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Dose escalation and Dose Expansion of XmAb541

Intravenous or Subcutaneous administration

Group Type EXPERIMENTAL

XmAb541

Intervention Type BIOLOGICAL

Monoclonal bispecific antibody

Interventions

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XmAb541

Monoclonal bispecific antibody

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

* Age ≥ 18 years. For 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
* Have documented progressive disease (PD) on standard-of-care therapies appropriate for the specific tumor type; have exhausted therapies with a survival benefit or the standard therapy has no survival benefit or proven to be ineffective, intolerable, or subject is not a candidate for such available therapy.
* Eastern Cooperative Oncology Group performance status of 0-2
* Life expectancy ≥ 3 months
* Adequate liver, kidney, and bone marrow function

Exclusion Criteria

* Prior exposure to a CLDN6 targeting product
* Ovarian cancer that is platinum refractory, or has rapid progression on most recent prior ≥ second line systemic anticancer therapy
* Have known active central nervous system metastases and/or carcinomatous meningitis. Patients 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
* Positive test for hepatitis C RNA
* Positive test for hepatitis B surface antigen or hepatitis B core antibody (hBcAb)
Minimum Eligible Age

15 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Xencor, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Winship Cancer Institute, Emory University

Atlanta, Georgia, United States

Site Status RECRUITING

Karmanos Cancer Institute

Detroit, Michigan, United States

Site Status RECRUITING

The John Theruer Cancer Center at Hackensack University Medical Center

Hackensack, New Jersey, United States

Site Status RECRUITING

Icahn School of Medicine at Mount Sinai

New York, New York, United States

Site Status RECRUITING

Montefiore Einstein Comprehensive Cancer Center

The Bronx, New York, United States

Site Status RECRUITING

The Ohio State University

Columbus, Ohio, United States

Site Status RECRUITING

OU Health Stephenson Cancer Center

Oklahoma City, Oklahoma, United States

Site Status RECRUITING

SCRI Oncology Partners

Nashville, Tennessee, United States

Site Status RECRUITING

University of Virginia

Charlottesville, Virginia, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Mira Kistler, MD

Role: CONTACT

Other Identifiers

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XmAb541-01

Identifier Type: -

Identifier Source: org_study_id

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