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Filter by:Genomic alterations have long been recognized as an important factor in tumor formation and drive tumor cell growth. However, the degree of genomic mutation (tumor mutation load, TMB) varies widely between tumors. In addition to gene mutations in tumor cells, the extent of immune cell infiltration in tumor tissues and the type and nature of immune cells (tumor microenvironment, TME) also play an important role in controlling tumor growth. In recent years, more and more clinical studies have shown that the degree of genomic alteration (TMB) and tumor microenvironment (TME) have great potential in predicting a cancer patients' response to immunotherapy. Therefore, understanding the interaction and correlation between genomic alteration and tumor immune environment will not only deepen our understanding of tumor biology but also provide an important reference for developing immunotherapy treatment strategies for solid tumors.
Ascitic fluid microbiome is going to be investigated in this study by using internal transcripted spacer (ITS) and 16S ribosomal RNA (rRNA) polymerase chain reaction (PCR) and sequencing as conventional culture methods are lacking sensitivity regarding diagnosis of spontaneous bacterial peritonitis (SBP). All patients with routinely performed ascitic fluid puncture and underlying liver cirrhosis are included in this study. Next generation sequencing (NGS) in ascitic fluid, skin swaps from puncture side and stool samples as well as conventional culture methods are performed to investigate the difference in the microbiome between patients with and without SBP.