ROC curve analysis for peripheral blood hsa_circ_0079787 and the combination of hsa_circ_0079787-PLT-MPV-PCT as a risk score to distinguish between AxSpA and SLE or HC or SLE + HC. The expression of hsa_circ_0079787 was determined in the peripheral blood of 46 patients with AxSpA and 46 patients with SLE by reverse transcription-quantitative PCR analysis. ROC curves were constructed to evaluate the diagnostic value of hsa_circ_0079787 for AxSpA. (A) Comparison of hsa_circ_0079787 levels between patients with AxSpA and SLE (Mann-Whitney U-test) and (B-F) ROC curve analysis for (B) hsa_circ_0079787 in AxSpA vs. SLE, (C) hsa_circ_0079787 in AxSpA vs. SLE + HC, (D) the combination of hsa_circ_0079787-PLT-MPV-PCT in AxSpA vs. HC, (E) the combination of hsa_circ_0079787-PLT-MPV-PCT in AxSpA vs. SLE and (F) the combination of hsa_circ_0079787-PLT-MPV-PCT in AxSpA vs. SLE + HC. Each dot represents an individual patient. ROC, receiver operating characteristic; AxSpA, axial spondyloarthritis; HC, healthy controls; SLE, systemic lupus erythematosus; circRNA/circ, circular RNA; MPV, mean platelet volume; PCT, plateletcrit; PLT, platelet count; hsa, Homo sapiens.