NCT05081492

CF33-hNIS-antiPDL1 for the Treatment of Metastatic Triple Negative Breast Cancer

A Phase I, First-in-Human Study of Intratumoral Administration of CF33-hNIS-antiPDL1, A Novel Chimeric Oncolytic Poxvirus Encoding Human Sodium Iodide Symporter (HNIS) in Patients With Metastatic Triple Negative Breast Cancer

• Status: Active Not Recruiting
• Phase: Phase 1
• Study type: Interventional
• Enrollment: 9 (actual)
• Sponsor: City of Hope Medical Center · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

This phase I trial tests the safety, side effects, and best dose of CF33-hNIS-antiPDL1 in treating patients with triple negative breast cancer that has spread to other places in the body (metastatic). CF33-hNIS-antiPDL1 is an oncolytic virus. This is a virus that is designed to infect tumor cells and break them down.

Detailed description

PRIMARY OBJECTIVE: I. To determine the safety and tolerability of a novel chimeric oncolytic orthopoxvirus, oncolytic virus CF33-expressing hNIS/Anti-PD-L1 antibody (CF33-hNIS-antiPDL1), by the evaluation of toxicities including: type, frequency, severity, attribution, time course, reversibility and duration according to Common Terminology Criteria for Adverse Events (CTCAE) 5.0 criteria. SECONDARY OBJECTIVES: I. To determine the optimal biologic dose (OBD) (defined as a safe dose that induces an immune response in tumors \[increase checkpoint target PD-L1 by at least 5% and/or increase T cell infiltration by at least 10%\]) and the recommended phase II dose (RP2D) for future expansion trial. II. To determine tumor response rates by Response Evaluation Criteria in Solid Tumors (RECIST) version (v)1.1 (primary) and immune-modified (i)RECIST (secondary). III. To document possible therapeutic efficacy and evaluate progression-free survival, overall survival and response. EXPLORATORY OBJECTIVE: I. To determine the immune and genomic profiles of tumors before and after CF33-hNIS-antiPDL1 therapy. OUTLINE: This is a dose-escalation study. Patients receive CF33-hNIS-antiPDL1 intratumorally (IT) on days 1 and 15. Treatment repeats every 28 days for up to 3 cycles in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up at 30 days, then every 3 months for 1 year.

Conditions

• Anatomic Stage IV Breast Cancer AJCC v8
• Metastatic Triple-Negative Breast Carcinoma
• Prognostic Stage IV Breast Cancer AJCC v8

Interventions

Type	Name	Description
BIOLOGICAL	Oncolytic Virus CF33-expressing hNIS/Anti-PD-L1 Antibody	Given IT

Timeline

• Start date: 2021-10-18
• Primary completion: 2027-03-01
• Completion: 2027-03-01
• First posted: 2021-10-18
• Last updated: 2026-04-17

Locations

1 site across 1 country: United States

Regulatory

• FDA-regulated drug study