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First-in-Human Assessment of Safety, Biodistribution and Pharmacokinetics of 18F-Fluoro-1-Naphthol (18F-4FN) for PET Imaging

First-in-Human Assessment of Safety, Biodistribution and Pharmacokinetics of 18F-Fluoro-1-Naphthol (18F-4FN) for PET Imaging

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05335811
Enrollment
55
Registered
2022-04-19
Start date
2022-10-06
Completion date
2028-08-31
Last updated
2026-08-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Endocrine Neoplasia

Brief summary

18F-4FN represents a novel PET agent for imaging inflammation. Acute inflammatory signaling through the TLR axis recruits neutrophils and macrophages to inflammatory sites. Both cells activate the production of high energy reactive oxygen species/reactive nitrogen species (RONS), setting off a cascade that can be leveraged to detect the presence of these inflammatory cells by molecular imaging. 18F-4FN is efficiently oxidized by high energy RONS, leading to retention and accumulation in human neutrophil-like cells in vitro, and at the sites of acute inflammation in vivo. Like 18F-FDG, 18F-4FN clears rapidly through the kidney at 1 hr following i.v. injection

Detailed description

OBJECTIVES: Primary Objective: The primary objective of this first-in-human (FIH) study is to determine the safety, biodistribution, and dosimetry profile of a novel positron emission tomography (PET) imaging tracer, 4-\[18F\]fluoro-1-naphthol (\[18F\]4FN), which specifically targets reactive oxygen species (ROS). A currently proposed indication for this radiopharmaceutical (RP) is to non-invasively quantify inflammation by PET/CT imaging. Exploratory Objectives: One exploratory objective is to identify preliminary efficacy signals from PET/CT images indicating that the new radiopharmaceutical localized to known or clinically-suspected tissues or regions of inflammation mediated by innate immune-related adverse events (irAE). Another exploratory objective is to determine if a time point other than one-hour post injection will yield clinically meaningful improvements to imaging data.

Interventions

DRUG4-[18F]Fluoro-1-Naphthol

By vein (IV)

Sponsors

M.D. Anderson Cancer Center
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
DIAGNOSTIC
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patient \>/= 18 years of age. * Patients with histologic diagnosis of solid or liquid tumor treated by ICI with evidence of or clinical suspicion of irAE or patients with suspected inflammation. * Normal range standard renal and liver function tests for age: eGFR \>= 60 mL/min/1.73 m2 Adequate liver function: Bilirubin ≤ the upper limit of normal (ULN) Alkaline phosphatase, alanine aminotransferase (ALT), and aspartate aminotransferase (AST) ≤ the ULN

Exclusion criteria

* Pregnant or lactating women: pregnant women are excluded from this study because the effects of \[18F\]4FN in pregnancy are not known. Urine or serum pregnancy test (female \</= 60 years of age or childbearing potential) within 24 hours of the PET scan. * Subjects with contraindications to the use of \[18F\]4FN including confirmed allergy. * Patients with a body weight of 400 pounds or more, or a BMI which precludes their entry into the bore of the PET/CT scanner, because the hardware is not intended to support that weight. * Any additional medical condition, serious concurrent illness, or other extenuating circumstance that, in the opinion of the physician may significantly interfere with study compliance. * Children below the age of 18 are excluded because of the unknown but potential risk of administration of radiopharmaceuticals to minors.

Design outcomes

Primary

MeasureTime frame
To identify preliminary efficacy signals from PET images that correlate with clinical foci of ICI-related irAE.through study completion, an average of 1 year

Countries

United States

Contacts

CONTACTSanjit Tewari, MD
sotewari@mdanderson.org(832) 729-1874
PRINCIPAL_INVESTIGATORSanjit Tewari, MD

M.D. Anderson Cancer Center

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 21, 2026