Thus, to improve the diagnostic capability of PTPRE in SNRA, we planned to construct a SNRA diagnostic model based on PTPRE expression and laboratory indicators of inflammation which have previously been reported to be associated with RA, including common inflammatory and immune cells (NEUT: neutrophil, MONO: monocytes, LYMPH: lymphocytes), and some inflammatory indicators of blood test (HGB, RDW, PLT, MPV and PDW). The gene discussed is PTPRE; the disease is rheumatoid arthritis.