NCT05581004 · Genentech, Inc.
A Study to Evaluate the Safety, Pharmacokinetics, and Activity of Enzelkitug as a Single Agent and in Combination With Checkpoint Inhibitor in Participants With Locally Advanced or Metastatic Solid Tumors
What this study is about
This is a first-in-human study to evaluate the safety, tolerability, how the drug moves through the body (PK), and anti-tumor activity of enzelkitug when administered as a single agent and in combination with atezolizumab or pembrolizumab in adult participants with locally advanced or metastatic solid tumors, including non small cell lung cancer (NSCLC), head and neck squamous cell carcinoma (HNSCC), melanoma, triple-negative breast cancer (TNBC), esophageal cancer, gastric cancer, cervical cancer, colorectal cancer (CRC), urothelial carcinoma (UC), clear cell renal cell carcinoma (RCC) and hepatocellular carcinoma (HCC). Participants will be enrolled in 2 stages: gradually increasing doses and dose expansion.
View original scientific description
This is a first-in-human study to evaluate the safety, tolerability, pharmacokinetics (PK), and anti-tumor activity of enzelkitug when administered as a single agent and in combination with atezolizumab or pembrolizumab in adult participants with locally advanced or metastatic solid tumors, including non small cell lung cancer (NSCLC), head and neck squamous cell carcinoma (HNSCC), melanoma, triple-negative breast cancer (TNBC), esophageal cancer, gastric cancer, cervical cancer, colorectal cancer (CRC), urothelial carcinoma (UC), clear cell renal cell carcinoma (RCC) and hepatocellular carcinoma (HCC). Participants will be enrolled in 2 stages: dose escalation and dose expansion.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Life expectancy of at least 12 weeks
- Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
- Measurable disease according to Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST v1.1)
- Histologically confirmed locally advanced, recurrent, or metastatic incurable solid tumor malignancy
- Tumor specimen availability
Exclusion criteria
- Pregnant or breastfeeding or intention of becoming pregnant during the study or within 4 months after the final dose of enzelkitug, or 4 months after the final dose of pembrolizumab, or 5 months after the final dose of atezolizumab
- Any anti-cancer therapy, whether investigational or approved, including chemotherapy, hormonal therapy, and/or radiotherapy, within 3 weeks prior to initiation of study treatment
- Active hepatitis B (HBV) or hepatitis C (HCV) or tuberculosis
- Positive test for human immunodeficiency virus (HIV) infection
- Acute or chronic active Epstein-Barr virus (EBV) infection at screening
- Administration of a live, attenuated vaccine (e.g., FluMist) within 4 weeks before first enzelkitug infusion
- Symptomatic, untreated, or actively progressing central nervous system (CNS) metastases
- Active or history of autoimmune disease
- Prior allogeneic stem cell or organ transplantation
Where
- San Francisco, California
- Aurora, Colorado
- Sarasota, Florida
- Atlanta, Georgia
- Boston, Massachusetts
- Detroit, Michigan
- St Louis, Missouri
- New Brunswick, New Jersey
- Germantown, Tennessee
- Nashville, Tennessee
- San Antonio, Texas
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jul 7, 2026 · Source of record for eligibility and locations