Diagnostic Power Comparison Between VOCs and CTCs

May 30, 2019 updated by: Hu Liu, Anhui Medical University

The Diagnostic Power of VOCs Compared With CTCs for Cancer

Early diagnosis of malignant tumors is pivotal for improving their prognoses. Circulating tumor cells (CTC) in peripheral blood and Volatile organic compounds (VOCs) in exhaled breath are newly developed diagnosis method. Due to the low percentage of CTCs in peripheral blood of cancer patients and the surface structure of lymphocytes (especially megakaryocytes) is often confused with tumor cells, CTC has a high false positive and negative rate. In recent years, the detection of volatile organic compounds (VOCs) in exhaled breath as a simple and noninvasive method has shown broad application prospects in the diagnosis of various diseases. A series of studies of VOCs diagnosing solid tumors the investigators had conducted in the past decade show that VOCs can not only distinguish different types of tumors, but also can make a distinction between different stages. This study was to compare CTC and VOCs with clinical samples. Predictive models will be built employing discriminant factor analysis (DFA) pattern recognition method. Sensitivity and specificity will be determined using leave-one-out cross-validation or an independent blind test set.

Study Overview

Detailed Description

200 patients with definitive diagnoses will be enrolled and the alveolar exhaled breath samples and peripheral venous blood will be collected. Two blood samples and two breath samples will be collected from each patient. One blood sample will be send to CTC tests for a blind test and the other will be used for headspace VOCs analyses. One breath sample was used for analysis with the Nano-sensors array, and the other was used for gas chromatography coupled with mass spectrometry (GC-MS) analysis. The VOCs samples were collected using sorbent tubes at a total flow through sorption trap of 200ml/min, then will be send to Israel Institute of Technology for further test.

Study Type

Observational

Enrollment (Anticipated)

200

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

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

18 years to 75 years (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

200 patients or volunteers who undergo Gastroscopy or breast surgery in Anhui Provincial cancer hospital, Hefei, China

Description

Inclusion Criteria:

  • 18-75 years
  • Definitive diagnosis of gastric cancer, breast cancer,benign breast disease and gastric lesions
  • ECOG(Eastern Cooperative Oncology Group) scores ≤ 2

Exclusion Criteria:

  • Other palliative chemotherapy and radiotherapy for this cancer
  • Other cancer
  • Diabetes, Fatty liver
  • Autoimmune disease
  • Pulmonary ventilation dysfunction

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

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Gastric cancer
patients with definitive diagnosis of gastric cancer by pathology
Alveolar exhaled breath samples and peripheral venous blood(10ml) will be collected from each patients
Breast cancer
patients with definitive diagnosis of breast cancer by pathology
Alveolar exhaled breath samples and peripheral venous blood(10ml) will be collected from each patients
Benign gastric diseases
Gastritis or gastric ulcer
Alveolar exhaled breath samples and peripheral venous blood(10ml) will be collected from each patients
Benign breast diseases
Hyperplasia of mammary glands or mastitis
Alveolar exhaled breath samples and peripheral venous blood(10ml) will be collected from each patients
Normal
healthy volunteers
Alveolar exhaled breath samples and peripheral venous blood(10ml) will be collected from each patients

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Discrimination between Malignant and Benign Gastric/Breast Lesions and normal group with each diagnostic method (Na-nose/GC-MS/CTC)
Time Frame: From June 15,2019 to June 1,2020
Exhaled breath samples and peripheral venous blood collected will be used to build predictive models employing discriminant factor analysis (DFA) and thereafter examine the sensitivity and specificity of model identification.
From June 15,2019 to June 1,2020

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Comprehensive diagnostic model of VOCs and CTCs
Time Frame: From June 1,2020 to Dec 31,2020
Organize predictive models of VOCs/CTCs and establish Comprehensive Diagnostic Model.
From June 1,2020 to Dec 31,2020

Collaborators and Investigators

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

Investigators

  • Principal Investigator: Hu Liu, MD, Anhui Provincial Cancer Hospital

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)

June 15, 2019

Primary Completion (ANTICIPATED)

June 1, 2020

Study Completion (ANTICIPATED)

December 31, 2020

Study Registration Dates

First Submitted

May 20, 2019

First Submitted That Met QC Criteria

May 20, 2019

First Posted (ACTUAL)

May 22, 2019

Study Record Updates

Last Update Posted (ACTUAL)

June 3, 2019

Last Update Submitted That Met QC Criteria

May 30, 2019

Last Verified

May 1, 2019

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

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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