Circulating Tumor DNA Alterations in Non-small Cell Lung Cancer Patients Treated With Pembrolizumab

Columbia University

Status: Terminated

Conditions: Non Small Cell Lung Cancer

Treatments: Other: Observational

Study type: Observational

Funder types: Other

Identifiers

NCT04791215

AAAS7953

Details and patient eligibility

About

The purpose of this study is to learn how to use blood tests to better predict how patients with non-small cell lung cancer, who are taking pembrolizumab for cancer treatment, will respond to treatment with pembrolizumab, and to understand how the immune system and cancer interact.

Tests will be performed on tumor tissue and blood samples, and imaging assessments will be reviewed in order to monitor how well each patient responds to treatment. This is an observational study, so participants will not receive cancer treatment, other than the treatment received as standard of care.

Full description

The primary and secondary endpoints of this study are to determine the kinetics of Circulating tumor DNA (ctDNA) as defined by a set of patient-specific tumor mutations. The analysis will be undertaken using the Signatera Assay from Natera. Circulating tumor DNA in plasma samples obtained over the course of pembrolizumab treatment will be assessed by high-intensity, next-generation genetic sequencing to identify genomic alterations in genes. The assay will target 16 defined patient specific mutations. Data acquired will be analyzed to characterize the association between these genetic elements, clinical response, and durability of responses. There will be prospective and retrospective groups for the study. Samples will be collected from patients in the prospective cohort who have been treated with pembrolizumab monotherapy at Columbia University Irving Medical Center under standard of care treatment. Subjects in the retrospective cohort will provide genetic data.

Enrollment: 10 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Diagnosis of NSCLC with a protein that acts as a kind of "brake" to keep the body's immune responses under control called Programmed Death Ligand-1 (PD-L1) Tumor Proportion Score (TPS) ≥ 1% and no known alterations in driver genes epidermal growth factor receptor (EGFR), anaplastic lymphoma kinase (ALK), or receptor tyrosine kinase (ROS1).
2. Retrospective cohort: subjects must consent to provide genetic data from previous whole exome sequencing (WES) in the form of FASTQ/BAM files (files that represent aligned genetic sequences) for creation of plasma ctDNA panels.
3. Prospective cohort: Subjects must consent to provide available archived tumor and blood for WES (matched tumor and normal) for creation of plasma ctDNA panels. The tumor sample must be from a site that was not previously irradiated or has progressed after radiation.
4. Ability to understand and the willingness to sign a written informed consent document.
5. Willing to comply with clinical trial instructions and requirements.
6. Both men and women of all races and ethnic groups are eligible for this trial

Exclusion criteria

1. Age <18 years
2. Known history of autoimmune disease or other medical conditions that would preclude safe treatment with pembrolizumab.

Trial design

10 participants in 2 patient groups

Prospective Sample Collection

Description:

Prospective sample collection from participants treated with pembrolizumab monotherapy at Columbia University Irving Medical Center under standard of care treatment. Prospective cohort subjects must consent to provide available archived tumor and blood for whole exome sequencing (WES) (matched tumor and normal) for creation of plasma ctDNA panels. The tumor sample must be from a site that was not previously irradiated or has progressed after radiation.

Treatment:

Other: Observational

Retrospective Sample Collection

Description:

Retrospective sample collection from participants that consent to provide genetic data from previous whole exome sequencing (WES) in the form of files for creation of plasma ctDNA panels.

Treatment:

Other: Observational