ITLN1 and rheumatoid arthritis: However, at baseline (T0), the RA+P group had lower mean ±SD of serum and gingival crevicular fluid levels of omentin than the P and RA group (p = 0.001) (Table 1).Patients in Group P and RA+P, underwent NSPT and were reevaluated after 6 weeks (T1).