Circ-LAMP1 activated domain receptor tyrosine kinase 2 (DDR2) by sponging miR-615-5p, which directly targeted DDR2, a member of the receptor tyrosine kinase (RTK) family, therefore, circ-LAMP1 might be an oncogene in T-LBL, as RTK initiated a signaling cascade closely related to cancer progression. This evidence concerns the gene DDR2 and cancer.