Utility of Plasma Circulating Tumor DNA (ctDNA) in Asymptomatic Subjects for the Detection of Neoplastic Disease

Neoplasms Clinical Trial

— H1000  

Official title:

Utility of Plasma Circulating Tumor DNA (ctDNA) in Asymptomatic Subjects for the Detection of Neoplastic Disease

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT02612350
• Other study ID #: Pathway Gennomics 004
• Status: Completed
• First received: November 13, 2015
• Last updated: April 4, 2018
• Start date: November 2015
• Est. completion date: August 2017

Study information

• Verified date: April 2018
• Source: Pathway Genomics
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

Pathway Genomics Corporation (Pathway Genomics), a San Diego, California company, is involved in the development and validation of new molecular diagnostic assays for the analysis of circulating tumor deoxyribonucleic acid (DNA) (ctDNA) found in the plasma-derived DNA (cell-free DNA or cfDNA) in order to identify specific variants (mutations) in cancer driver genes. The purpose of testing for mutations in ctDNA is to detect and monitor cancer. All cells shed DNA into the bloodstream. Finding cancer-associated mutations in the cfDNA may lead to early detection of cancer in an otherwise apparently healthy (i.e. asymptomatic) individual or may allow the healthcare provider to more effectively monitor and treat a known cancer patient. The analysis is performed using a polymerase chain reaction (PCR)-based methodology where oligonucleotides are designed to target specific mutations in designated genes of interest followed by next generation deep sequencing of the amplified targets. Evaluation of the performance of these assays for screening for cancer in asymptomatic subjects is essential for the clinical validation of the use of these assays. The specific aim of this protocol is to obtain relevant human blood samples from individual subjects at higher than average risk for the development of cancer due to age, heredity, or environmental or toxic exposures for use in the statistical analysis of this method as an adjunct screening test for the potential presence of cancer.

Description:

The objectives of this study are to obtain human blood samples from asymptomatic subjects who have never been diagnosed with cancer, but who may be at increased risk for cancer due to heredity, exposures, age, or family history to assess the validity of screening healthy but at risk patients for cancer via analysis of ctDNA.

Specifically, the blood specimens will be collected from individuals who have responded to a self-administered health questionnaire that screens for higher risk of contracting cancer. Each participant will be asked to provide a 30 ml blood sample to be drawn by a primary care provider (PCP) or licensed phlebotomist. The specimens collected during the study may also be used in the research and development of new or modified molecular genetics assays. The results of these studies will be used to further the understanding of the use of ctDNA for the detection and monitoring of cancer in humans.

The blood samples are collected in blood collection tubes (BCT) called Cell-Free DNA BCT® manufactured by Streck and intended for collection, stabilization and transportation of cell-free plasma DNA. This device also stabilizes and preserves cellular genomic DNA present in nucleated blood cells and circulating epithelial cells (tumor cells) found in whole blood. This product has not been cleared by the U.S. Food and Drug Administration for In Vitro Diagnostic use and is labeled by Streck for research use only. Under the Clinical Laboratory Improvement Amendments (CLIA) regulations, laboratories are authorized to validate and use, as part of a laboratory-developed test (LDT), devices that have not been cleared or approved by the FDA. Pathway Genomics validated the CancerInterceptTM Detect molecular analysis system with the Streck tubes, in accordance with CLIA.

Once the specimen has been collected and sent to Pathway by the physician or the phlebotomist who collects the samples, all other processing and testing are conducted by Pathway laboratory personnel. The analysis begins with the separation of the plasma from the rest of the blood sample. cfDNA will then be isolated from each sample. The quantity of cfDNA is measured and then the sample is amplified via PCR for next generation sequencing. The results of the sequencing will then be analyzed for the presence of one or more of the 96 mutations analyzed in this assay. The data are then reviewed and a report will be generated.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 1106
• Est. completion date: August 2017
• Est. primary completion date: August 2017
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• strong family history of cancer

• known carrier of a pathogenic variant in a gene indicating an increased risk of cancer, for example, in the BRCA1 or TP53 genes.

• exposure to environmental toxins, carcinogens, or mutagens, including but not limited to tobacco, radiation, asbestos, long-time industrial chemical exposure

• age equal to or over 50 years

Exclusion Criteria:

• prior diagnosis of cancer except basal cell carcinoma

• no risk factors that place the individual at high risk

• age under 18 years

• individuals unwilling to sign the IRB-approved consent form

Related Conditions & MeSH terms

• Mutation
• Neoplasms

Intervention

Genetic:
• ctDNA Analysis for the Detection of Genetic Mutations
Cell-free DNA (cfDNA) is isolated from a blood plasma sample and tested for the presence of 96 specific well-described mutations in 9 cancer driver genes. The presence of more than 2 copies of a mutation may indicate the presence of a malignancy. Follow up with the subject's physician would be needed for an examination and any additional testing that the physician wants to perform to further assess for the development of cancer.

Locations

Country	Name	City	State
United States	Pathway Genomics	San Diego	California

Sponsors (1)

Lead Sponsor	Collaborator
Pathway Genomics

Country where clinical trial is conducted

United States, 

References & Publications (17)

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* Note: There are 17 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Number of subjects found with one or more of 96 ctDNA mutations	A cohort of 1000 or more individuals who are at high risk for the development of cancer will be tested for the presence of 96 well-described mutations in 9 cancer driver genes via ctDNA analysis. The number of individuals with one or more of the 96 assayed mutations will be assessed.	1 year
Primary	Number of copies of mutant alleles found in the positive subjects	Among the cohort of subjects enrolled in the study in whom one or more of the 96 ctDNA mutations are detected, the number of copies per analyzed plasma sample will be calculated.	1 year
Primary	Percentage of ctDNA found within the total amount of circulating free DNA (cfDNA)	Within the samples found to contain one or more ctDNA mutation, the percentage of ctDNA within the total amount of cfDNA will be calculated.	1 year
Secondary	Number of subjects with one or more of 96 ctDNA mutations who develop cancer	The 1000 or more individuals in the study will be followed for 1 to 5 years to assess for the development of a malignancy. Special attention will be paid to the cohort who have initial assays indicating the presence of ctDNA. The subjects may be retested over time to show changing levels of ctDNA. Their own physicians will guide any follow up studies such as imaging or other laboratory testing. The test is designed as a means of case finding for cancer among individuals with high risk for development of cancer.	1 to 5 years

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