Skip to content

Intravital Microscopy for Identifying Tumor Vessels in Patients With Stage IA-IV Melanoma That is Being Removed by Surgery

A Pilot Study of Feasibility of Performing Intravital Microscopy in Melanoma Patients

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01886235
Enrollment
10
Registered
2013-06-25
Start date
2013-09-04
Completion date
2020-05-06
Last updated
2020-08-07

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

Conditions

Recurrent Melanoma, Stage IA Skin Melanoma, Stage IB Skin Melanoma, Stage IIA Skin Melanoma, Stage IIB Skin Melanoma, Stage IIC Skin Melanoma, Stage IIIA Skin Melanoma, Stage IIIB Skin Melanoma, Stage IIIC Skin Melanoma, Stage IV Skin Melanoma

Brief summary

This pilot clinical trial studies intravital microscopy for identifying tumor vessels in patients with stage IA-IV melanoma that is being removed by surgery. New imaging procedures, such as intravital microscopy, may determine the extent of melanoma.

Detailed description

PRIMARY OBJECTIVES: I. To determine the feasibility of performing intravital microscopy on accessible human melanoma tumors during their standard course of treatment (i.e., wide local excision). (Part I) SECONDARY OBJECTIVES: I. To determine the blood flow velocity of the tumor vessels and tissue penetration of fluorescein (fluorescein sodium) as a marker of tumor vessel permeability. (Part II) OUTLINE: Patients receive fluorescein sodium intravenously (IV) followed by intravital microscopic observation over 10-15 minutes during excision of the melanoma. After completion of study treatment, patients are followed up at 3 weeks and then periodically for 5 years.

Interventions

Undergo intravital microscopy

OTHERLaboratory Biomarker Analysis

Correlative studies

PROCEDURETherapeutic Conventional Surgery

Undergo surgery

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
Roswell Park Cancer Institute
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

* Have an Eastern Cooperative Oncology Group (ECOG) performance status of =\< 2 * Have measurable disease in their skin by direct visualization (visible lesion typically \> 0.5 cm in maximal diameter); to perform a microscopic observation, the lesion will have to be visible by the naked eye, lined-up visually, and be able to interface with the microscope objective; a melanoma lesion that is smaller than 0.5 cm in diameter would present several obstacles to obtaining a reliable microscopic observation in the operating room; therefore, a visible lesion, at a minimum of 0.5 cm in diameter, is proposed for this study * Melanoma tumor that requires a wide local excision in the operating room; this may include any stage of melanoma from stage IA to stage IV that requires a wide excision in the operating room * Subject or legal representative must understand the investigational nature of this study and sign an Independent Ethics Committee/Institutional Review Board approved written informed consent form prior to receiving any study related procedure * To determine any sensitivity to fluorescein, subject must have a skin prick test preoperatively (at the time of the preoperative visit and after signed informed consent for entry into this clinical trial is given); a negative skin prick test to fluorescein is an inclusion criteria

Exclusion criteria

* Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements * Melanoma deposit is deemed inaccessible to microscopic observation during the operative procedure (i.e., lesion is less than 0.5 cm or is not clearly visible to the naked eye) * Renal dysfunction as defined as a glomerular filtration rate (GFR) \< 70 * Any known allergy or prior reaction to fluorescein; also, a positive skin prick test to fluorescein is considered an

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants With Successful Intravital Microscopy on Accessible Human Melanoma Tumors During Standard Local ExcisionUp to 2 monthsA successful intravital microscopic observation will include the ability to identify tumor vessels, measure tumor vessel diameters, determine vessel density per 10 x field and visualize fluorescein within the tumor vessels.

Secondary

MeasureTime frameDescription
Blood Flow RatesUp to 2 monthsSample tumor characteristics obtained from the intervention will be characterized using descriptive statistics (mean, medians) and 95% confidence intervals.
Complication RateUp to 5 yearsNumber of participants with an event that would disrupt the standard surgical procedure or create an adverse event that would not be anticipated from the standard surgery.
Median Overall SurvivalUp to 5 yearsAssessed using Kaplan Meier and Proportional Hazards methods. Collected through routine follow-up processes.
Percentage of Participants With Any Adverse EventUp to 5 yearsPercentage of participants with any adverse event. Described using upper one-sided 95% Clopper Pearson confidence limits.
Percentage of Participants With Treatment ResponseUp to 5 yearsTreatment response was based upon the presence of a recurrence of the melanoma at either primary or metastatic sites.
Tumor VasculatureUp to 2 monthsSample tumor characteristics obtained from the intervention will be characterized using descriptive statistics (mean, medians) and 95% confidence intervals.
Median Progression Free SurvivalUp to 5 yearsAssessed using Kaplan Meier and Proportional Hazards methods. Collected through routine follow-up processes.

Countries

United States

Participant flow

Participants by arm

ArmCount
Diagnosis (Intravital Microscopy)
Patients receive fluorescein sodium IV followed by intravital microscopic observation over 10-15 minutes during excision of the melanoma. Diagnostic Microscopy: Undergo intravital microscopy Fluorescein Sodium Injection: Given IV Laboratory Biomarker Analysis: Correlative studies Therapeutic Conventional Surgery: Undergo surgery
10
Total10

Baseline characteristics

CharacteristicDiagnosis (Intravital Microscopy)
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
2 Participants
Age, Categorical
Between 18 and 65 years
8 Participants
Age, Continuous58.5 years
STANDARD_DEVIATION 10.6
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
10 Participants
Sex: Female, Male
Female
5 Participants
Sex: Female, Male
Male
5 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
4 / 10
serious
Total, serious adverse events
1 / 10

Outcome results

Primary

Percentage of Participants With Successful Intravital Microscopy on Accessible Human Melanoma Tumors During Standard Local Excision

A successful intravital microscopic observation will include the ability to identify tumor vessels, measure tumor vessel diameters, determine vessel density per 10 x field and visualize fluorescein within the tumor vessels.

Time frame: Up to 2 months

Population: All treated and eligible patients

ArmMeasureValue (NUMBER)
Diagnosis (Intravital Microscopy)Percentage of Participants With Successful Intravital Microscopy on Accessible Human Melanoma Tumors During Standard Local Excision70 percentage of participants
Secondary

Blood Flow Rates

Sample tumor characteristics obtained from the intervention will be characterized using descriptive statistics (mean, medians) and 95% confidence intervals.

Time frame: Up to 2 months

Population: All treated and evaluable patients. Only 7 patients had data available, one patient had an unobservable tumor and two patients the fluorscein never made it to the tumor.

ArmMeasureValue (MEAN)
Diagnosis (Intravital Microscopy)Blood Flow Rates270 micrometers per second
Secondary

Complication Rate

Number of participants with an event that would disrupt the standard surgical procedure or create an adverse event that would not be anticipated from the standard surgery.

Time frame: Up to 5 years

Population: All treated and eligible patients

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Diagnosis (Intravital Microscopy)Complication Rate0 Participants
Secondary

Median Overall Survival

Assessed using Kaplan Meier and Proportional Hazards methods. Collected through routine follow-up processes.

Time frame: Up to 5 years

Population: All treated and eligible patients

ArmMeasureValue (MEDIAN)
Diagnosis (Intravital Microscopy)Median Overall SurvivalNA months
Secondary

Median Progression Free Survival

Assessed using Kaplan Meier and Proportional Hazards methods. Collected through routine follow-up processes.

Time frame: Up to 5 years

Population: All treated and eligible patients

ArmMeasureValue (MEDIAN)
Diagnosis (Intravital Microscopy)Median Progression Free SurvivalNA months
Secondary

Percentage of Participants With Any Adverse Event

Percentage of participants with any adverse event. Described using upper one-sided 95% Clopper Pearson confidence limits.

Time frame: Up to 5 years

Population: All treated and eligible patients.

ArmMeasureValue (NUMBER)
Diagnosis (Intravital Microscopy)Percentage of Participants With Any Adverse Event40 percentage of participants
Secondary

Percentage of Participants With Treatment Response

Treatment response was based upon the presence of a recurrence of the melanoma at either primary or metastatic sites.

Time frame: Up to 5 years

Population: All treated and eligible patients

ArmMeasureValue (NUMBER)
Diagnosis (Intravital Microscopy)Percentage of Participants With Treatment Response0 percentage of participants
Secondary

Tumor Vasculature

Sample tumor characteristics obtained from the intervention will be characterized using descriptive statistics (mean, medians) and 95% confidence intervals.

Time frame: Up to 2 months

Population: Stringent dosing requirements precluded assessment of tumor vasculature endpoints. These measurements will be addressed in future studies.

Source: ClinicalTrials.gov · Data processed: Feb 23, 2026