Evaluation of PD1 / PDL1 Expression on Blood Cells & Tumor Tissue, Their Role as a Prognostic Target in NSCLC Patients

Instituto Nacional de Cancerologia de Mexico

Status: Unknown

Conditions: Non-Small Cell Lung Cancer

Treatments: Other: Evaluation of PD-1/PDL-1 expression.

Study type: Observational

Funder types: Other

Identifiers

NCT02758314

INCAN/CI/498/13

Details and patient eligibility

About

Several reports have examined Programmed Death 1 (PD-1) expression on tumor-infiltrating T-cells, and its correlation with prognosis has been discussed. However, Programmed Death 1 (PD1)/Programmed Death Ligand 1 (PDL1) expression on the peripheral blood T-cells of cancer patients, particularly in those with lung cancer, has not been sufficiently studied. The purpose of this study is evaluate the expression of PD1 and PDL1 in subpopulations of peripheral blood and tumor cells patients with lung cancer non-small cell (NSCLC), associating with clinicopathological features of the patients studied.

Full description

This is a prospective cohort study including patients with NSCLC stages IIIA, IIIB and IV lung cancer clinic of the National Cancer Institute (INCAN)

Clinical samples. Prior and informed consent before receiving any treatment, sample be obtained 15 ml peripheral blood of each subject included in the study (patients and controls). mononuclear peripheral blood cells (PBMC) from different groups of subjects separated by centrifugation gradient (Polymorphprep, Accurate Chemical) are used. The cells are resuspended in dimethylsulfoxide (DMSO) and 10% fetal bovine serum (FBS) to 90% at a concentration of 1 million cells per ml and kept in liquid nitrogen until use.

Evaluation of PD-1, PD-L1 by flow cytometry. The following monoclonal antibodies directed against cell surface antigens of human are used: anti-PD-1, anti-PD-L1, anti-PD-L2, anti- cluster of differentiation (CD) 3, anti-CD4, anti-CD8, anti-CD14, anti-CD16, anti-CD56, anti-CD19, anti-CD20.

Immunolocalization of PD-1, PD-L1 in lung tumor tissue of patients with NSCLC. Immunohistochemical staining (IHC). Lung biopsy is obtained paraffin blocks, and are processed by IHC technique for antitumor expression of PD1 / PDL1.V PD-L1 immunostaining was classified into two groups according to intensity and extent: (a) negative, when no staining or positive staining was detected in <5% of the cells; and (b) positive, when membranous staining was present in P5% of the cells.

Enrollment: 150 estimated patients

Sex: All

Ages: 18 to 80 years old

Volunteers: Accepts Healthy Volunteers

Inclusion and exclusion criteria

Inclusion Criteria patient :

1. Patients who have understood and signed the informed consent.
2. Diagnosis of lung cancer, histologically or cytologically documented (stage IIIA / B or IV) non-small cell adenocarcinoma, which had not received radiotherapy and / or chemotherapy prior to the first sample.
3. Eastern Cooperative Oncology Group (ECOG) performance status 0-2 and evidence of measurable disease.

Exclusion Criteria patient:

1. Subjects with Non-small cell lung cancer with a different histological type to adenocarcinoma.
2. Subjects with acute inflammation and uncontrolled infections.

Inclusion Criteria healthy subjects :

1. Informed consent in writing (signed) to participate in the study.
2. No diagnosis of oncological disease.
3. Subjects without symptoms of any respiratory illness in the two weeks prior to sampling.

Exclusion criteria healthy volunteers.

1. Any unstable systemic disease (including active or metabolic infection, congestive heart failure, liver disease, kidney).

Trial design

150 participants in 2 patient groups

Cases / NSCLC patients

Description:

Evaluation of PD-1/PDL-1 expression. Evaluate the expression of PD-1 / PD-L1 on T-cell subpopulations (CD3 + (CD4 +, CD8 +), B cells (CD19 + CD20 +), natural killer (NK) cells (CD16 + CD56 +) NK T-cells (CD3 + CD16 + CD56 + ) peripheral blood samples in 150 NSCLC, free treatment by flow cytometry. Evaluate the expression of PD-1 / PD-L1 in tumor tissue obtained by biopsy of patients with NSCLC by immunohistochemistry. The patients for the enrollment have to be diagnosed with advanced Non-Small Cell Lung Adenocarcinoma (clinical stages IIIA, IIIB and IV), treated at the Instituto Nacional de Cancerología (INCan) who had not received radiotherapy and / or chemotherapy prior to obtaining samples to analyze. ECOG performance status 0-2 and present evidence of measurable disease.

Treatment:

Other: Evaluation of PD-1/PDL-1 expression.

Control / Healthy subjects

Description:

Evaluation of PD-1/PDL-1 expression. Evaluate the expression of PD-1 / PD-L1 on T-cell subpopulations (CD3 + (CD4 +, CD8 +), B cells (CD19 + CD20 +), natural killer (NK) cells (CD16 + CD56 +) NK T-cells (CD3 + CD16 + CD56 + ) peripheral blood samples in 50 samples, by flow cytometry. Healthy subjects blood cells will be obtained from the blood bank at the Instituto Nacional de Cancerología (INCan)

Treatment:

Other: Evaluation of PD-1/PDL-1 expression.