SRSF7 and cancer: <h4>Background</h4>This study clarified the expression of cicrTLK1 in non-small cell lung cancer (NSCLC) and explored its role in cancer growth, metastasis and immune escape, providing a potential molecular target and theoretical basis for NSCLC treatment.<h4>Methods</h4>The expression levels of circTLK1, miR-876-3p and SRSF7 were determined by RT-qPCR assay.