Spots Global Cancer Trial Database for Correlation Between Specific Gene Mutationand Local Immune Microenvironment and Immunotherapy Efficacy in NSCLC

Study Description

Brief Summary: Immunotherapy for PD-L1 positive patients is still ineffective in some patients，which may be related to the complex immune microenvironment.In view of this bottleneck, further refinement of immunotyping and in-depth study of drug resistance mechanism are the most important tasks. In this observational study, we evaluated the difference of gene mutation and immune microenvironment and therapeutic effect in primary NSCLC.

Detailed Description: There are still some patients with PD-L1 positive who are ineffective in immunotherapy, which may be related to the complex immune microenvironment. In view of this bottleneck, further refinement of immunotyping and in-depth study of drug resistance mechanism are the most important tasks. Recently, studies have shown that the core elements of tumor microenvironment that have a significant impact on immunotherapy are:1. Infiltration abundance of specific killer T cells; 2. PD-L1 expression dependent on IFN - γ pathway, down-regulation of various active molecules and up-regulation of inhibitory molecules; 3. Activation and clearance of various inhibitory T cells. Although the classification has achieved further refinement of immune cells and molecular level, there are still some problems to be solved urgently: first, the classification of TIL cells needs further refinement, and different types of TIL infiltration have different guiding significance for prognosis; second, the subjective second-order semi quantitative scoring is often used for til count scoring, with low repeatability and different centers It is not easy for different pathologists to reach an agreement on the results of reading and interpretation. Thirdly, conventional methods are difficult to meet the requirements of tumor microenvironment analysis. In conclusion, it is urgent to develop a multi molecular marker landscape analysis system for tumor microenvironment, and establish a standardized detection process for each molecule to meet the needs of clinical positioning, quantitative and qualitative analysis for key molecular markers of immune microenvironment. In this observational study, we evaluated the difference of gene mutation and immune microenvironment and therapeutic effect in primary NSCLC.

Keywords

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: No

Locations

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