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NCT04942665: ICG

Low Dose ICG for Biliary Tract and Tumor Imaging

Completed Phase 2 Results posted Last updated 30 August 2023
What this trial tests

Phase 2 trial testing Indocyanine green in Cholecystitis in 60 participants. Completed in 1 April 2023.

Timeline
15 September 2021
Primary endpoint
15 September 2022
1 April 2023

Quick facts

Lead sponsorUniversity of Florida
PhasePhase 2
StatusCompleted
Study typeINTERVENTIONAL
Allocationrandomized
Designparallel
Maskingdouble
Primary purposediagnostic
Enrollment60
Start date15 September 2021
Primary completion15 September 2022
Estimated completion1 April 2023
Sites1 location across United States

Drugs / interventions tested

Conditions studied

Sponsor

University of Florida

Who can join

Adults 18 to 80, any sex, with Cholecystitis or Hepatocellular Carcinoma. Patients with the condition only — healthy volunteers not accepted.

Results — posted to ClinicalTrials.gov

Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.

Quantitative Assessment - Bile Duct-to-liver Fluorescence Intensity Ratio Primary · intraoperative, average of 2 hours

Measurement is performed by dividing the fluorescence intensity signal of the common bile duct by that of the liver

GroupValue95% CI
Low Dose2.71.5 – 4.2
Standard Dose0.70.6 – 0.8
Qualitative Assessment of Overall Intraoperative Visualization of the Extrahepatic Biliary Tree - NIRFC Versus White Light Secondary · intraoperative, average of 2 hours

A qualitative assessment will be made based on the quality of the intraoperative visualization of the extrahepatic biliary tree on a scale of 1 to 5 (1 = no improvement/identification not confirmed; 2 = marginally improved; 3 = sufficiently improved; 4 = well improved; 5 = greatly improved/exceeds expectations).

GroupValue95% CI
Low Dose3.4± 1.3
Standard Dose3.1± 1.0
Quantitative Assessment - Bile Duct-to-background Fat Fluorescence Intensity Ratio Secondary · intraoperative, average of 2 hours

Measurement is performed by dividing the fluorescence intensity signal of the common bile duct by that of the background fat

GroupValue95% CI
Low Dose6.14.9 – 10.5
Standard Dose2.72.4 – 3.0
Qualitative Assessment of Overall Intraoperative Visualization of the Extrahepatic Biliary Tree (Common Hepatic Duct, Cystic Duct, Common Bile Duct, Aberrant Ducts) Secondary · intraoperative, average of 2 hours

A qualitative assessment will be made based on the quality of the intraoperative visualization of the extrahepatic biliary tree on a scale of 1 to 5 (1 = no improvement/identification not confirmed; 2 = marginally improved; 3 = sufficiently improved; 4 = well improved; 5 = greatly improved/exceeds expectations).

Common Hepatic Duct
GroupValue95% CI
Low Dose3.6± 1.4
Standard Dose2.8± 1.3
Cystic Duct
GroupValue95% CI
Low Dose3.6± 1.3
Standard Dose3.5± 1.2
Common Bile Duct
GroupValue95% CI
Low Dose3.6± 1.3
Standard Dose3.1± 1.3
Aberrant Duct
GroupValue95% CI
Low Dose2.8± 1.3
Standard Dose2.3± 0.4

Sponsor's own description

Near-infrared fluorescence (NIRF) imaging after an intravenous injection of indocyanine green (ICG) allows for the intraoperative identification of liver anatomy. The investigators have new data that a much lower dose improves this visualization. Confirmation of this hypothesis would mean that ICG can be administered on the same day of surgery in order to augment real-time intraoperative visualization, thereby providing a safe, feasible, and cost-effective strategy for the surgical treatment of liver disease.

Publications & conference data

1 peer-reviewed publication reference this trial (live from Europe PMC):

  1. The hepatic macrophage: a key regulator of liver metastatic tumor microenvironment through cell crosstalk.
    Wang W, Yi Z, Yang Z, Huang Y, et al · · 2025 · cited 1× · PMID 41272833 · DOI 10.1186/s12967-025-07376-4

Verify or expand the search:

Other trials of Indocyanine green

Trials testing the same drug.

Other recruiting trials for Cholecystitis

Currently open trials in the same condition.

Other University of Florida trials

Trials by the same sponsor.

Verify against primary sources

Data sources for this page

Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT04942665.

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing