TFF2 and systemic lupus erythematosus: We found elevated levels of anti-dsDNA (p < 10−4) and anti-Chr (p = 0.03) Ab levels in the SLE-DP + group as compared to the corresponding SLE-SP + groups (Fig. 2C/D), allowing nevertheless to discriminate SLE-DP+ and SLE-SP + patients from AID/ID (0.704<AUC<0.843).