Dielectric Properties of Matched Tissue Samples From Thoracic Malignancies and Corresponding Normal Tissues

March 15, 2021 updated by: Joseph S. Friedberg, MD, University of Maryland, Baltimore

Determination of Dielectric Properties of Matched Tissue Samples From Thoracic Malignancies and Corresponding Normal Tissues

The purpose of the Dielectrics Properties of Thoracic Malignancies Study (DPTMS) is to provide a wealth of knowledge for investigators involved in establishing a new and effective treatment for a variety of solid tumors using tumor treatment fields. It is intended to provide biospecimen (tumor/healthy) together with demographic data (age, sex, race, occupational history, and other epidemiologic information), and clinical data (stage, treatment, survival information, and annotated CT's). Our specific aims are to test the following hypotheses: 1) Electric properties of thoracic tumors differ from electric properties of surrounding healthy tissue 2) Different tumor types will have different electric properties 3) Electric properties of individual tumors are heterogeneous 4) Electric properties of tumors are related to the structure and composition of the underlying tissue 5) Use of standard medical imaging data (CT) will permit mapping of electric properties.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

Thoracic malignancies represent a significant burden of disease in the US population. Lung cancer, for example, is the most common cause of cancer mortality in the US among both men and women and long-term survival remains poor with a 5-year survival rate less than 20%. There is significant need for additional therapeutic options for all stages of patients. Esophageal cancer, although less common in the US with an incidence of 1% among new cancer diagnosis, also has significant mortality with a similar survival rate of about 20% at 5 years. There are a variety of additional thoracic malignancies that contribute to morbidity and mortality of the US population including mesothelioma and other pleural based cancers and thymoma. All of these thoracic malignancies pose unique challenges that have limited the effectiveness of current therapies, necessitating the development of new and innovative approaches.

Tumor treatment fields (TTF) have recently been established as a new and effective treatment for a variety of solid tumor malignancies. TTF provides a unique ability to deliver targeted and sustained therapy via an LCR meter. TTF has shown promise for some of the most aggressive malignancies such as glioblastoma and therefore should be considered for aggressive thoracic malignancies as well. In order to develop a TTF protocol that is both efficient and efficacious, the electric field properties of target tumors must be understood. Although well established for some tumors, the complete electric properties of thoracic malignancies as they apply to TTF is still not fully understood. The proposed project is to address this gap of knowledge.

Our plan is to analyze 3-5 tissue probes acquired from 30 patients with a variety of thoracic malignancies. Tissue will be acquired in the operating room and will be analyzed immediately. The investigators will plan to acquire tissue from each type of malignancy including: lung cancer, esophageal cancer and pleural based tumors. After acquisition of data, the investigators will assess the data and continue to acquire patients to obtain significant estimates of overall tissue properties in each type of tumor. The investigators will offer all patients at our center undergoing resection of thoracic malignancies the opportunity to participate in the study. After undergoing an informed consent process in accordance with IRB approval, patients with be formally enrolled. The LCR meter used for electric property analysis of the tissue will be positioned on and secured to a movable cart so that it can be brought to the operating room for rapid tissue analysis following surgical excision of the tumor. Impedance measurements will be collected on multiple sections of excised tissue and will be translated into dielectric properties. All tumor electric property data will be stored securely and remain anonymous of patient identifying data.

Study Type

Interventional

Enrollment (Anticipated)

30

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Diagnosis of thoracic malignancies
  • Able to provide informed consent
  • Scheduled for diagnostic or treatment related surgical procedure

Exclusion Criteria:

  • Inability to undergo surgery
  • Unable to provide informed consent

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Dielectric Properties of Tissue Samples from Thoracic Malignancies and Corresponding Normal Tissues
Our plan is to analyze 3-5 tissue probes acquired from 30 patients with a variety of thoracic malignancies. The investigators will plan to acquire tissue from each type of malignancy including: lung cancer, esophageal cancer and pleural based tumors. Tissue will be acquired in the operating room. Impedance measurements will be collected on multiple sections of excised tissue and will be translated into dielectric properties. After acquisition of data, the investigators will assess the data and continue to acquire patients to obtain significant estimates of overall tissue properties in each type of tumor. After undergoing an informed consent process in accordance with IRB approval, patients with be formally enrolled. All tumor electric property data will be stored securely and remain anonymous of patient identifying data.
Device: LCR Meter (Brand: Keysight, Serial Number:E498AL)
The LCR meter is used for electric property analysis of tissues. It works by measuring impedance on multiple sections of excised tissue and translating those measurement into dielectric properties.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Impedance measurements in different frequencies
Time Frame: During Surgery
The impedance measurements in different frequencies will be collected on multiple sections of excised tissue and will be translated into dielectric properties. The conductivity and relative permittivity measurements in frequencies range (20Hz-1MHz) of tissues will be collected and analyzed.
During Surgery

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Maryland, Baltimore

Collaborators

NovoCure Ltd.

Investigators

  • Principal Investigator: Joseph Friedberg, MD, FACS, University of Maryland, Baltimore

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Anticipated)

March 1, 2021

Primary Completion (Anticipated)

September 1, 2021

Study Completion (Anticipated)

December 1, 2021

Study Registration Dates

First Submitted

March 2, 2021

First Submitted That Met QC Criteria

March 15, 2021

First Posted (Actual)

March 18, 2021

Study Record Updates

Last Update Posted (Actual)

March 18, 2021

Last Update Submitted That Met QC Criteria

March 15, 2021

Last Verified

March 1, 2021

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • HP-00094059

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

The following information will be recorded from all samples and provided to Novocure Ltd; 1) Type of tumor tissue 2) Measured electric properties 3) ID/ serial number connecting sample to annotated CT image

IPD Sharing Time Frame

Individual participant data (de-identified data) would be shared with Novocure Ltd indefinitely.

IPD Sharing Access Criteria

All individual participant data (de-identified) would be stored on a secure database and shared with Novocure Ltd.

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • SAP
  • CSR

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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