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Terminated Phase 1 Interventional

Study of ImmunoPet Imaging of PD-L1 in Tumors Using 89Zr-DFO-REGN3504 in Adult Participants With Advanced PD-L1 Positive Malignancies

ClinicalTrials.gov ID: NCT03746704

Public ClinicalTrials.gov record NCT03746704. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Sep 24, 2026, 6:46 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Phase 1, First-in-Human Study of ImmunoPET Imaging of PD-L1 in Tumors Using 89Zr-DFO-REGN3504, an Anti-PD-L1 Tracer for Positron Emission Tomography in Patients With Advanced PD-L1 Positive Malignancies

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The primary objective of the study is to determine the safety and tolerability of 89Zr-DFO-REGN3504. The secondary objectives of the study are: Study Part A only: * To establish adequate mass dose and activity dose of 89Zr˗DFO˗REGN3504 and optimal post-infusion imaging time, as assessed by imaging and blood draw after tracer infusion Study Part B only: * To establish test/re-test reliability of positron emission tomography (PET) measures as assessed on 2 separate tracer infusions at adequate mass dose and optimal imaging time point as determined in Part A * To characterize the pharmacokinetic (PK) profile of 89Zr˗DFO˗REGN3504 based on tracer plasma activity concentration

Study identification

NCT ID
NCT03746704
Recruitment status
Terminated
Study type
Interventional
Phase
Phase 1
Lead sponsor
Regeneron Pharmaceuticals
Industry
Enrollment
2 participants

Conditions and interventions

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Sep 3, 2019
Primary completion
Jul 7, 2021
Completion
Jul 7, 2021
Last update posted
Feb 22, 2022

2019 – 2021

United States locations

U.S. sites
2
U.S. states
1
U.S. cities
1
Facility City State ZIP Site status
Regeneron Study Site New York New York 10029 —
Regeneron Study Site New York New York 10032 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT03746704, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Feb 22, 2022 · Synced Sep 24, 2026

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Open the official record

The complete protocol, eligibility criteria, and contact information for NCT03746704 live on ClinicalTrials.gov.

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