FAM207A acts as a novel and potential biomarker in lung adenocarcinoma and shapes the immunesuppressive tumor microenvironment.

The expression of Family with sequence similarity 207 member A( FAM207A) is closely related to the development, growth, and progression of various cancers. However, extensive research into its biological functions remains unexplored. In this study, we conducted a comprehensive biological information analysis of the Lung adenocarcinoma (LUAD) dataset to elucidate the foundational mechanisms underlying FAM207A's role in tumor development. The expression and clinical information of LUAD patients for FAM207A were extracted from the Cancer Genome Atlas (TCGA). Using Western blot, we assessed the expression levels of relevant proteins in LUAD cells and human lung epithelial cells. Subsequently, we employed Cox regression analysis to evaluate the prognostic significance of FAM207A in LUAD, along with gene set enrichment analysis (GSEA) to explore its potential biological functions and interactions with FAM207A's immune microenvironment. Finally, in vitro experiments confirmed that FAM207A significantly influences the proliferation and migration of LUAD cells. The results indicate that FAM207A mRNA and protein expression levels in LUAD tissues and cell are significantly elevated. Additionally, FAM207A high expression is significantly associated with a shorter overall survival (OS) and more advanced pathological stages. Furthermore, FAM207A expression is significantly linked to the expression of immunogenic markers in the LUAD tumor microenvironment. Gene set and KEGG enrichment analyses revealed that FAM207A is primarily associated with genes involved in adhesion and immune signaling pathways. Additionally, in vitro experiments demonstrated that FAM207A can effectively promote the proliferation and migration of LUAD cells. Our findings revealed that FAM207A is overexpressed in LUAD and is linked to a poor prognosis. Our study demonstrates the potential of FAM207A as an immunotherapeutic and predictive biomarker in LUAD.