Phase 1, First-in-human, Dose-finding and Expansion Study to Evaluate XmAb®808 in Combination With Pembrolizumab in Advanced Solid Tumors

Study Purpose

The purpose of this study is to evaluate the safety, tolerability, and pharmacokinetics of intravenous (IV) administration of XmAb808 in combination with pembrolizumab in subjects with selected advanced solid tumors and to identify the minimum safe and biologically effective/recommended dose (RD) and schedule for XmAb808.

Recruitment Criteria

Accepts Healthy Volunteers

Healthy volunteers are participants who do not have a disease or condition, or related conditions or symptoms

No
Study Type

An interventional clinical study is where participants are assigned to receive one or more interventions (or no intervention) so that researchers can evaluate the effects of the interventions on biomedical or health-related outcomes.


An observational clinical study is where participants identified as belonging to study groups are assessed for biomedical or health outcomes.


Searching Both is inclusive of interventional and observational studies.

Interventional
Eligible Ages 18 Years and Over
Gender All
More Inclusion & Exclusion Criteria

Key

Inclusion Criteria:

  • - Part A: Histologically confirmed advanced/metastatic castration-resistant prostate adenocarcinoma, epithelial ovarian cancer, head and neck squamous cell carcinoma, non-small cell lung cancer, urothelial carcinoma, melanoma, renal cell carcinoma, triple-negative breast cancer, or colorectal cancer that has progressed on standard therapies.
  • - Part B: Histologically confirmed advanced/metastatic castration-resistant prostate cancer that is PD1-naïve; head and neck squamous cell carcinoma that is PD1-naïve or has progressed on prior PD1 therapy; or melanoma that is PD1-naïve or has progressed on prior PD1 therapy.
  • - Measurable disease by RECIST 1.1; subjects with prostate cancer who have evaluable disease according to PCWG3 criteria may enroll.
  • - Life expectancy > 3 months.
  • - Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
Key

Exclusion Criteria:

  • - Subjects currently receiving other anticancer therapies.
  • - Any prior treatment with an investigational agent targeting CD28.
  • - History of a life-threatening adverse event related to prior immunotherapy.
  • - Known active central nervous system involvement by malignant disease.
Subjects with previously treated brain metastases may participate provided they are radiologically and clinically stable

Trial Details

Trial ID:

This trial id was obtained from ClinicalTrials.gov, a service of the U.S. National Institutes of Health, providing information on publicly and privately supported clinical studies of human participants with locations in all 50 States and in 196 countries.

NCT05585034
Phase

Phase 1: Studies that emphasize safety and how the drug is metabolized and excreted in humans.

Phase 2: Studies that gather preliminary data on effectiveness (whether the drug works in people who have a certain disease or condition) and additional safety data.

Phase 3: Studies that gather more information about safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs.

Phase 4: Studies occurring after FDA has approved a drug for marketing, efficacy, or optimal use.

Phase 1
Lead Sponsor

The sponsor is the organization or person who oversees the clinical study and is responsible for analyzing the study data.

Xencor, Inc.
Principal Investigator

The person who is responsible for the scientific and technical direction of the entire clinical study.

Chet Bohac, MD
Principal Investigator Affiliation Xencor, Inc.
Agency Class

Category of organization(s) involved as sponsor (and collaborator) supporting the trial.

Industry
Overall Status Recruiting
Countries United States
Conditions

The disease, disorder, syndrome, illness, or injury that is being studied.

Head and Neck Squamous Cell Carcinoma, Melanoma Excluding Uveal Melanoma, Non-small Cell Lung Cancer, Squamous or Non-squamous, Urothelial Carcinoma, Renal Cell Carcinoma, Clear Cell, Castration-resistant Prostate Cancer, Ovarian Cancer, Epithelial, TNBC - Triple-Negative Breast Cancer, Colorectal Cancer
Additional Details

This is a Phase 1, open-label, first-in-human (FIH), multiple-dose, dose escalation study with cohort expansion at the RD, designed to evaluate the safety and tolerability of XmAb808 in combination with pembrolizumab. This study will be conducted in 2 parts: Part A (dose escalation) and Part B (cohort expansion).

Arms & Interventions

Arms

Experimental: Dose Escalation and Expansion XmAb®808 administered in combination with pembrolizumab

XmAb®808 in combination with pembrolizumab

Interventions

Biological: - XmAb®808

Monoclonal bispecific antibody

Biological: - Keytruda® (pembrolizumab)

Monoclonal antibody

Contact a Trial Team

If you are interested in learning more about this trial, find the trial site nearest to your location and contact the site coordinator via email or phone. We also strongly recommend that you consult with your healthcare provider about the trials that may interest you and refer to our terms of service below.

UCLA Hematology/Oncology, Los Angeles, California

Status

Recruiting

Address

UCLA Hematology/Oncology

Los Angeles, California, 90095

Denver, Colorado

Status

Recruiting

Address

Sarah Cannon Research Institute at HealthONE

Denver, Colorado, 80218

Florida Cancer Specialists, Sarasota, Florida

Status

Recruiting

Address

Florida Cancer Specialists

Sarasota, Florida, 34232

Atlanta, Georgia

Status

Recruiting

Address

Winship Cancer Institute, Emory University

Atlanta, Georgia, 30322

Northwestern Memorial Hospital, Chicago, Illinois

Status

Recruiting

Address

Northwestern Memorial Hospital

Chicago, Illinois, 60611

New York, New York

Status

Recruiting

Address

Columbia University Irvine Medical Center

New York, New York, 10032

University of Cincinnati Medical Center, Cincinnati, Ohio

Status

Recruiting

Address

University of Cincinnati Medical Center

Cincinnati, Ohio, 45219

UPMC Hillman Cancer Center, Pittsburgh, Pennsylvania

Status

Recruiting

Address

UPMC Hillman Cancer Center

Pittsburgh, Pennsylvania, 15213

Tennessee Oncology, Nashville, Tennessee

Status

Recruiting

Address

Tennessee Oncology

Nashville, Tennessee, 37203

Houston, Texas

Status

Recruiting

Address

The University of Texas MD Anderson Cancer Center

Houston, Texas, 77030

Salt Lake City, Utah

Status

Recruiting

Address

Huntsman Cancer Institute, University of Utah

Salt Lake City, Utah, 84112

Milwaukee, Wisconsin

Status

Recruiting

Address

Froedtert Hospital & The Medical College of Wisconsin

Milwaukee, Wisconsin, 53226

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