At 3 years with: Satisfied PGA (p<0.001), BASDAI <4 (p=0.004), a CRP < 6mg/L (p=0.022), low BASMI (p= 0.004), average decrease in BASFI (p=0.013), VAS-pain = 0 (p=0.017), the absence of infections (p =0.043), Absence of new comorbidities (p=0.02) and NSAIDs not taken between visits (p=0.003). The gene discussed is CRP; the disease is infection.